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Why do the clothes in your closet smell damp and musty?

For many of us, clothes are an investment, and they make it easy to represent who we are or what we believe in. That’s why we purchase high-quality clothes, and we want them to last for a very long time. The problem is, sometimes the clothes in our closet smell musty or damp. Why is that, and what can we do in order to solve this problem? Here’s what you should know! What causes the musty, damp odor? What you’ll notice is that the musty/damp odor doesn’t appear right away. Instead, it takes time to develop, and when you do feel it, this becomes incredibly problematic to deal with. Here are some of the main causes behind these unpleasant smells: Excess humidity levels can be a problem, especially if you go over 60%. When there’s too much moisture in the air, it can easily enter fabric fibers, and thus your clothes will have unpleasant smells. Investing in a good dehumidifier can help solve this issue while keeping humidity levels under control. Dirty or damp clothes, for example, workout shirts or a towel, can easily introduce bacteria/moisture into your closet. And when that happens, it’s very easy for the unpleasant smell to spread, due to bacteria reaching other clothes. A lack of adequate air circulation is also very problematic. If you don’t circulate the air in your closet, moisture and stale air get trapped, which makes ideal conditions for mildew or mold to start developing very quickly. Flooring or carpet issues can be an issue, since these can absorb moisture and spread those lingering, unpleasant odors. The same thing is valid when it comes to plumbing or roof leaks; they are problematic and can lead to these nasty smells in the long run Can you get rid of these smells? Absolutely, and there are different methods you can use. The most important thing here is to focus on finding adequate, effective, and comprehensive methods that will help. Use a dehumidifier Investing in a good dehumidifier is a great idea, mainly because it’s a product build specifically to lower humidity levels. It allows you to lower the air humidity levels while eliminating dangerous moisture that could lead to mold and bacteria spreading within your home. A dehumidifier also allows you to improve air quality, which is extremely important to do for any closet. A great model you can use in this situation is the Abestorm Guardian SN90. Find ways to improve the airflow There are different methods you can use. A very good one is to leave the closet doors open as often as you can. Of course, there’s also the option to install louvered doors, or even use a small fan to circulate the air. Moreover, you can avoid overstuffing the closet. If there are way too many clothes, that can block ventilation, and it only leads to issues down the line. Check for any signs of mold If there’s any mold in your home, you want to remove it as quickly as possible. But how do you identify any signs of mold? Search for any green/black spots on the clothes, shelves, corners, or walls. You can also identify mold if you see any peeling paint, warping wood, or some white, fuzzy patches. Make sure that your clothes are dry and clean A good way to avoid moisture in your closet is to ensure that your clothes are dry. Add those items in the dryer, hang them in a separate space with good airflow, anything you can. It will help you stay away from that musty, unwanted smell that’s very challenging and problematic to deal with. Freshen up the closet naturally How can you do that? There are various natural odor absorbers that you should use, like baking soda, cedar blocks, activated charcoal, or lavender sachets. These are great if you’re looking to neutralize any musty smells. On top of that, they deliver a fresh, natural scent that will just make your closet smell a lot better. It’s a good idea to test it out for yourself, and you’ll be very happy with the results. Preventing musty closet smells in the long run It’s never easy to try and deal with those musty, unpleasant smells. They can last for a very long time, and dealing with them is quite the challenge. The upside here is that you can find all kinds of long-term solutions for these problems. Here are some you should consider: Whenever there are humid months, run the dehumidifier. It’s an excellent way to keep your closet dry and free of humidity. Plus, you’re getting rid of the damp, musty smell, too. Moisture-absorbing products are always going to help remove musty smells. Plus, they provide a natural, pleasant odor, which comes in handy. Another good trick is to rotate clothes. If you let them sit untouched for a very long time, that makes them prone to absorbing moisture in the long run. If there are any leaks or signs of water damage within your home, solve them quickly. Doing that will help prevent any issues while protecting you from problems that could arise, like mold spreading throughout your home. It also helps if you clean your closet as often as you can. Seasonal cleaning is usually the best approach, and try to clean the floors and walls around your closet as well, whenever possible. Storing shoes in breathable containers will help you prevent any trapped odors, so try to consider that. Conclusion These unpleasant, musty smells coming from your closet can be very problematic and challenging. Plus, that also means some of your clothes already have mold or bacteria on them, which is not a good sign. The best approach here is to follow all our tips shown above and also buy a reliable dehumidifier. Not only will it help you eliminate any moisture quickly, but it can also provide you with excellent results in the long term. The last thing you want is any bad smell coming from your closet. Thankfully, if you buy a good dehumidifier, you don’t need to worry about that anymore!

What's the Ideal Humidity Level for Your Crawl Space? Tips to Keep It Dry!

Most of us neglect crawl spaces, even if they are imperative for your home's structural integrity, but also its energy efficiency. Installing a dehumidifier in your crawl space is a great idea, as it can help remove a lot of the accumulated humidity and prevent mold from taking over. It's very important to learn how to avoid very high humidity levels in your crawl space, and we are here to help. Why is it crucial to keep your crawl space's humidity under control? Around 50% of the air you breathe within your home comes from your crawl space. It might not seem like much, but the truth is that keeping the crawl space free of allergens, humidity, and bacteria is crucial. After all, that's most of the air you breathe, and if it's infected, filled with mold and dangerous compounds, that can affect your health. Thankfully, there are different ways to tackle this problem, and investing in a good dehumidifier for your crawl space can be ideal here. What's the ideal humidity level for your crawl space? Generally, the best humidity level for your crawl space should be anywhere from 30% to 60%. A lot of the time, it goes well beyond that number. And if that's the case, it can bring in various problems that it's a good idea to avoid. We recommend checking the humidity levels and keeping them under control with a good dehumidifier. If you can keep the ideal relative humidity levels between 45% and 55%, then that's great. If you have the humidity level in your crawl space over 60%, then mold growth risks are increased. However, if the humidity levels go below 30%, that means wood in your crawl space can shrink or crack. So yes, it can be quite problematic to have either too low or too high a humidity level. It’s easy to access great results with a product like the Hurricane 85P, as it has great effectiveness and it even has its own drain hose and pump. Things you can expect when the humidity levels are too high in the crawl space It's imperative to try and keep those humidity levels under control, as otherwise things can easily get very problematic. For example, one of the things that happens is that mold and mildew take over very quickly. On top of that, the insulation deteriorates, and any of your floors get either warped or they are sagging quite a lot. Additionally, high moisture levels always attract pests, with termites being a prime example. Another issue that can arise is that your indoor air quality suffers. That means you will be dealing with asthma and allergies, which can be quite challenging to deal with. Plus, the HVC workload increases due to high humidity levels, and that leads to high energy bills. How can you measure your crawl space humidity? It's a good idea to keep those humidity levels under control. But how can you measure the overall humidity in your crawl space? The best approach is to buy a remote humidity sensor or a hygrometer. Place that in the crawl space, and then you will have remote access to the sensor's data. In doing so, you know when to use your dehumidifier and ensure that humidity levels stay within the right parameters. What leads to a high humidity level? There can be lots of factors: You have outdoor air that comes in, which introduces moisture. That becomes a problem in regions with a warm climate. Ground moisture can also influence crawl space humidity, and the same is valid for plumbing leaks. A very poor drainage system could allow foundation water to seep into your crawl space. And yes, it's also valid for condensation, whenever warm air hits cool surfaces, it creates moisture. It can also be caused by HVAC ducts not being sealed properly, as they might introduce moist, warm air. How can you know there are any moisture problems? Before buying a good dehumidifier, it's a good idea to see whether there are any moisture issues in your crawl space. A lot of people look for mildew or mold, and you should also check for musty odors or HVAC condensation. If your insulation is sagging or you see bouncy/warped floors, that can also be a sign that there are issues. In case you see any of these, it's clear that you must take action as quickly as you can. Tips and tricks to help reduce your crawl space humidity Even if your crawl space humidity levels are over 50-60%, there are ways to lower them. It comes down to using the right tips and ideas: Invest in a good dehumidifier and monitor humidity levels as much as you can Try to install a vapor barrier, usually that will block ground moisture from evaporating and getting into your breathable air Moreover, it's imperative to improve drainage, because it will allow you to keep moisture levels under control In addition to that, it makes sense to try and insulate the crawl space, you can use rigid or closed-cell spray foam because it will prevent condensation Does it make sense to encapsulate your crawl space? It does, because you get permanent moisture control, enhanced energy efficiency, not to mention the indoor air quality can improve quite a lot, and that does help quite a bit. You can also have improved pest and mold prevention if you encapsulate the crawl space, which is always helpful. Most of the time, getting a dehumidifier is ideal because it can operate even at low temperatures, and these units have a digital humidistat so you can monitor humidity levels. Getting a dehumidifier built for crawl spaces is particularly useful because it's compact, it comes with a built-in pump and automatic drain, which is extremely helpful. Closing thoughts It's very important to make sure that the air in your crawl space is fresh and also free of any allergens. That's why you need to keep those humidity levels under control, something that a dehumidifier can excel at. If you're able to keep those humidity levels between 45% and 55%, then you can stay away from mold and other dangerous compounds. That's why it comes as highly recommended to find an excellent, high-quality dehumidifier for your crawl space, as it can have a very positive impact when it comes to your health and wellbeing!

Dehumidifier vs Air Conditioner: Best Basement Moisture Solution

Basements tend to be humid areas due to the lack of airflow. That’s why mold tends to accumulate in the basement first, at least for most homes, and then it will continue taking over the entire home. Plus, concrete is a material that can absorb water, and the lack of airflow can become rather problematic here. What you can do is figure out whether an AC unit or a dehumidifier is the better option. What can each type of unit do? The thing to note here is that the dehumidifier is meant to help remove excess moisture from the air. It draws the damp air, then it condenses the water vapors into liquids, and then it collects the water in a tank or it gets drained via a hose. It can be good for improving the air quality while preventing things like rotting, mildew, or mold. On the other hand, an AC unit is designed to help cool air in an indoor space. Due to the cooling process, it can help reduce humidity levels. However, that’s a byproduct, and it’s not meant to do that specifically. It can work well both in humid and hot climates, and it’s particularly useful for enhancing comfort in living spaces. Moisture removal efficiency When we talk about removing moisture from a basement, a dehumidifier is usually the better option. An AC unit needs warm air so it can operate properly, and it mostly controls the overall temperature, not moisture levels. By comparison, the dehumidifier can reduce the room’s humidity levels by up to 50%. It’s clearly a more effective and reliable solution, and it can do wonders. Energy consumption That’s the thing: whether you use a dehumidifier or an AC unit, you do need to be wary of energy consumption. And in this case, the AC is the one that usually consumes more power, since it has fans, larger cooling compressors, and so on. With a dehumidifier, you have improved energy efficiency. The AC unit is better if you want both dehumidification and cooling; however, if you just want to remove moisture from the basement, your dehumidifier is a better solution. Where do you live? It’s just as important to think about your climate, as that matters just as much here. For example, if you live in a warm, humid climate, then an AC unit will be enough. But if you live in a damp, cool climate, then a dehumidifier is better since it works all year round without issues. In general, if the basement temperatures are very low, the air conditioning unit is not going to be the most effective option. The Hurricane LGR85 is a prime example of a good humidifier that can do wonders for any basement! Comfort and air quality Whenever you want to avoid basement moisture, you want to think about ways to improve air quality and comfort. A dehumidifier can be ideal if you want to avoid dealing with mold spores or dust mites. It can also be great for removing moisture that eventually leads to odors. The AC unit can be ok at times, but realistically, it can lead to overcooling or even dryness. Dehumidifiers are meant to improve air quality, and they do provide better comfort levels as well. Basement size Yes, the basement layout and size matter just as much. If you have a large basement, you may need to get a whole-house dehumidifier. Some people choose to go with a mobile dehumidifier because it’s easy to carry around, and you can move it anywhere you want. That’s why a dehumidifier is usually the best approach in a situation like this. Use cases For most people, a dehumidifier is ideal if you have a basement that’s damp and cool most of the year. It’s also good if you have mold risks and persistent humidity. If you use the basement for storage or various utility purposes and not daily living, it certainly makes a lot of sense to go for the dehumidifier option. The same thing is valid if you want to increase structural longevity, stay away from musty odors, while protecting items that you’re storing there. An AC unit can be good if the basement is humid and hot in the summer, and you use it often. You can also use one if you live in a hot climate zone and you need to dehumidify, but also cool the air. Now the question is, should you or do you need to use both of these together? As you can imagine, there are certain situations when it could actually make sense. For example, they can enhance the indoor comfort, you keep humidity levels under control, and you’re also improving the air quality. In order to make the most out of this, it’s a good idea to place the AC unit near the occupied zones of your basement, and then you can also place the dehumidifier close to any moist area. That way, you have the best of both worlds. Other things to consider if you want to keep great moisture control It’s a very good idea to seal any cracks in your floors and foundation walls Installing a sump pump can help a lot, especially if you have any water intrusion, so keep that in mind You can also use a vapor barrier for your floors and walls, and try to improve drainage as much as possible Keeping the downspouts and gutters clear is not a lot to do, but it can greatly enhance how you deal with moisture And of course, store items on pallets and shelves, not on the basement floors Closing thoughts So, if you have a basement and want to eliminate moisture from it, should you use a dehumidifier or an AC unit? Generally, if you want great moisture control, a dehumidifier is ideal. It can reduce humidity levels quite a bit, and it’s great for protecting the basement against mildew or mold. Sure, an AC unit could work in humid/hot climates and a finished basement where people don’t just store stuff. However, for the most part, a dehumidifier is better, more effective, and delivers excellent reliability!

How to prevent Mold in Underground Spaces | Dehumidifier & Fan Guide

Underground spaces like basements, crawl spaces and root cellars are great for storage and shelter but they’re also a mold’s paradise. Dark areas with poor airflow, soil moisture and uninsulated walls create a damp environment. Mold spores are always in the air, on surfaces and even in the materials of your home. When humidity goes above 60% and surfaces stay damp, those spores spread quickly on wood, drywall, insulation and even concrete. This can lead to musty odors, structural damage, and health problems. This article will show you how to control moisture and stop mold growth in basements, cellars and other underground spaces. Understanding Mold Growth in Underground Spaces Mold spores are everywhere in the air, on surfaces and even in the materials of your home. But they only start growing when three conditions are met: moisture or high humidity, lack of air circulation and presence of organic food sources like drywall, wood and fabrics. Underground spaces, especially crawl spaces and unfinished basements often meet all three conditions. Add in condensation from plumbing, groundwater seepage or seasonal rain and the risk escalates fast. Why It’s a Big Deal Basement mold is more than a simple appearance problem. It can: Trigger allergic reactions or worsen asthma Damage walls, flooring and insulation Lower your home’s resale value Spread to upper levels of the house Role of Dehumidifiers in Mold Prevention A dehumidifier removes excess moisture from the air and collects it in a tank or drains it out on its own. It keeps humidity below 60% (ideally 30–50%) to stop mold growth, but not all dehumidifiers are suitable for underground spaces. Special dehumidifiers, like those from Abestorm, are designed for tight, low spaces like basements or crawl spaces. They’re more powerful and built to handle very damp conditions. Many of them also come with auto-draining and smart humidity sensors to make them easy to use. How Ventilation Fans Help Mold Control Many homeowners confuse ventilation with dehumidification. While dehumidifiers remove moisture from the air, ventilation fans improve airflow, bringing in drier outside air (when possible) and preventing air stagnation. Best Practices for Underground Ventilation Use mechanical crawl space fans with adjustable speeds Don’t rely on natural ventilation unless in dry climates Integrate fans with humidity sensors for smart automation Always pair ventilation with sealing techniques to prevent outdoor humidity from coming in Choosing the Right Dehumidifier for Basements Selecting the right dehumidifier is the first step in protecting your basement from mold growth. A good unit will keep the humidity between 30–50% which is too dry for mold to survive. 1) Desiccant vs. Refrigerant Models There are two main types of dehumidifiers. Refrigerant models work by cooling moist air and collecting the water that condenses. They’re great for warm spaces above 60°F and remove moisture quickly. Desiccant dehumidifiers use materials like silica gel to soak up moisture without cooling the air. They work much better in cold basements and can operate in temperatures as low as -4°F. 2) How Temperature Affects Performance If your basement is below 50°F often, a regular refrigerant unit may not work well — its coils could freeze. For very cold basements choose a desiccant model or a low-grain refrigerant (LGR) dehumidifier designed for low temperatures. Some refrigerant models also come with frost control to prevent freezing. For example the Abestorm Guardian SN55 is a great LGR option that works efficiently in cool, damp environments like crawl spaces and basements. 3) Noise and Energy Use If your basement is finished and used often, quiet operation is important. Desiccant models tend to be quieter (around 40 dB), while refrigerant models are a bit louder (50–70 dB). To save on electricity go for Energy Star certified models. 4) Choose the Right Size for Your Basement Choose the right size and your dehumidifier will run efficiently. A 30–50 pint dehumidifier is perfect for areas up to 1,500 sq. ft. with moderate moisture levels. But if your basement is over 1,200 sq. ft. or very humid (80–90%) choose a unit that removes at least 50–60 pints of water daily. The Abestorm Guardian SN90 for example is ideal for large basements or areas with severe moisture problems. It’s designed to pull up to 90 pints per day and comes with an auto-drain system for easy setup. How to Stop Mold in Your Underground Space Mold in your basement or crawl space is more than just cleaning up visible spots. Follow these four steps to create a long term, moisture free environment that mold can’t survive in. Step 1: Seal and Insulate Before adding any equipment, make sure your basement or crawl space is sealed. Fill in any cracks in the walls or around pipes so moisture can’t get in. Cover dirt floors with plastic sheets to block moisture from the ground. Insulate the walls to stop water from building up on cold surfaces. This keeps the area dry and makes your other equipment work better. Step 2: Install a Dehumidifier Choose a dehumidifier that fits your space. For example, the Abestorm Guardian SN55 is suitable for spaces up to 1,300 square feet. Place the dehumidifier where air can circulate around it, not too close to walls. If the model drains water automatically, place it near a drain. Set the humidity to 50% and let it run all the time to keep the air dry. Step 3: Add Ventilation Fans Put fans on opposite sides of the space to help air flow from one end to the other. This will get rid of damp air and bring in fresh air. Use fans that can turn on and off based on humidity levels or timers. If your space is big you can also use duct fans to pull air out through a vent. Step 4: Monitor and Adjust Check the humidity levels often with a hygrometer to make sure they stay below 60%. Look at your fans and dehumidifier from time to time to make sure they’re working properly. Also check if the dehumidifier is draining water as it should. Keeping an eye on things will stop mold before it becomes a problem. Our Top Products Here are some high-performance tools for underground mold prevention: 1. Abestorm Filteair HEPA 550 Air Scrubber It is perfect for mold prevention in underground areas like crawl spaces or basements. A 3-stage filtration system includes a MERV-10 pre-filter, a HEPA filter that removes 99.97% of particles, and a carbon filter to eliminate odors. Stackable, filter change indicator, and connect up to 3 units for large jobs. Great for renovations or after floods. 2. Abestorm Guardian SN35P 70 PPD Crawl Space Dehumidifier For small crawl spaces and basements (up to 1,000 sq. ft) this unit removes up to 70 pints of moisture daily. Includes built-in pump, long drainage hose and Energy Star certified—powerful and efficient. Prevents mold, mildew and musty smells underground without taking up much space. 3. Abestorm Hurricane LGR85 Commercial Dehumidifier This heavy-duty dehumidifier removes up to 180 pints of moisture per day in spaces up to 2,300 sq. ft., making it ideal for serious mold problems. It is designed for post-flood or restoration work, stackable design, LED controls and auto functions—drain, defrost, restart. The tough rotomolded housing is built for harsh underground conditions. 4. Abestorm Guardian SN90 198 PPD Crawl Space Dehumidifier This unit works in crawl spaces up to 2,600 sq. ft and removes up to 198 pints of moisture daily. Keeps relative humidity below 60% for mold prevention and air quality. For homeowners serious about underground moisture protection with high energy efficiency rating (2.69 COP). 5. Abestorm Hurricane LGR85-Grey Smart WIFI Dehumidifier Same strength as the regular LGR85 but smart-enabled (future-ready). It is great for large, humid underground areas and removes 180 pints/day. Although the app isn’t currently active the device has intuitive controls, humidity sensor and automatic maintenance functions. For professionals who need efficient, stackable dehumidifiers for mold-prone areas. 6. Abestorm HEPA V2 Air Scrubber with UV-C Light This air scrubber has 4-stage filtration and UV-C light sterilization to kill airborne mold spores and bacteria. Perfect for post-mold remediation or areas underground that are at risk of contamination. Covers up to 900 sq. ft, stackable, durable and energy efficient with speed control. Conclusion Mold hides in the shadows, literally. Underground spaces are naturally prone to moisture due to poor airflow. But with the right dehumidifier, ventilation system and moisture prevention strategy you can have a mold free foundation. Instead of reacting to mold growth, be proactive. Think of your basement or crawl space as part of your home, not a storage dungeon. Set up the room like any other with smart controls, good airflow and strong long lasting materials.

June 12, 2025

What Size Ventilation Fan Do I Need

Proper ventilation is important for maintaining indoor air quality, preventing mold, and improving health. For this, the ventilation fan works best, but what about the right size? Whether you are remodeling your bathroom or upgrading your kitchen range hood, installing undersized or oversized fans leads to many problems. If you are wondering what size ventilation fan do I need, this guide helps you make an informed, cost-effective decision that pays off for years to come. What Is CFM in Ventilation Fans? CFM stands for Cubic Feet per Minute and is the standard unit used to measure how much air a fan can move per minute, and selecting the right CFM ensures efficient ventilation. It tells you how many cubic feet of air the fan can move in one minute (CFM), which is essential when comparing different types of vent fans like ceiling-mounted, inline, or wall-mounted models. If the CFM is too low, the vent fan won't ventilate properly, leading to mold growth, and if the CFM is too high, it can result in unnecessary operating costs and a noisy environment. To calculate the right CFM for vent fans, here is the formula CFM = (Room Volume × ACH) ÷ 60 Where: ● Room Volume = Length × Width × Height (in feet) ● ACH = Air Changes per Hour (e.g., 8 for bathrooms, 15–20 for kitchens) ● 60 = Number of minutes in an hour (to convert hourly air volume to per minute) How to Calculate the Correct Ventilation Fan Size? For optimal air circulation, you have to follow these steps to calculate the ideal ventilation fan size according to the room dimensions: Step 1: Calculate Room Volume For this, calculate: Room Volume (cubic feet) = Length × Width × Height If a bathroom measuring 10 ft x 8 ft with an 8 ft ceiling, it will be: Volume = 10 × 8 × 8 = 640 cubic feet Step 2: Determine Required Air Changes (CFM) The Home Ventilating Institute (HVI) recommends at least 8 air changes per hour for bathrooms. Convert that to CFM with this formula: Required CFM = (Room Volume × 8) ÷ 60 Using the above example: CFM = (640 × 8) ÷ 60 ≈ 85 CFM Step 3: Add CFM Based on Bathroom Fixtures For bathrooms over 100 sq. ft, consider additional CFM for each fixture: Fixture Additional CFM Toilet +50 CFM Shower +50 CFM Bathtub +50 CFM Jetted Tub +100 CFM If you are having a large bathroom with a toilet, shower, and jetted tub: Total CFM = Base CFM + 50 + 50 + 100 = Base + 200 CFM Get the best ventilation fans from Abestorm, and their team is cooperative enough to explain to you the ventilation fan size according to your space. Bathroom Ventilation Fan Sizing Guide If you're still unsure, check out our guide to choosing the best bathroom ventiliation fans for your specific space and needs. Here’s a quick reference to help you size your bathroom fan correctly, ensuring optimal ventilation and moisture control: Bathroom Size (sq. ft.) Recommended CFM Up to 50 50 CFM 51–100 1 CFM per sq. ft. Over 100 Add CFM based on fixtures For ceilings taller than 8 feet, adjust room volume using the actual ceiling height in your calculation. Kitchen Range Hood Ventilation Requirements Kitchen fans (range hoods) are necessary to remove smoke, grease, steam, and cooking odors. Their sizing depends on stove type and cooking habits. General CFM guidelines include: Cooktop Type Recommended CFM per Linear Foot Electric Stove 100 CFM Gas Stove 150 CFM Here is how to size a kitchen range hood: Suppose you have a 30-inch (2.5-foot) gas cooktop, then the required CFM will be: 2.5 × 150 = 375 CFM When to Increase CFM? ● Frequent high-heat cooking, like wok use, frying. ● Long duct runs or multiple bends ● Undersized ducts (match duct diameter to fan output Tip: Always vent kitchen range hoods outside for maximum efficiency. Ventilation Fan Noise: What Are Sones? Ventilation fan noise is measured in sones, where a lower rating means quieter operation. Sones Rating Noise Level <1.0 Very quiet (rustling leaves) 1.0–2.0 Quiet (like a fridge) 2.0–3.0 Moderate (office background) >3.0 Loud (like TV or conversation) For bathrooms, opt for fans ≤1.0 sones for a peaceful ambiance. Factors That Affect Ventilation Fan Performance Beyond Room Size Ventilation needs also vary depending on the space being ventilated. For example, areas like attics or basements may require crawlspace ventilation fans to manage moisture and airflow effectively. Choosing the right CFM is not enough; knowing other elements are also important because they also reduce a fan’s effectiveness: Ductwork Resistance Each 10 ft of 4" duct adds 0.1–0.3 inches of static pressure (SP); elbows, caps, and filters add up to 0.15 SP each. Solution: If the duct run exceeds 20 ft, either: Upgrade to 6" ducting, increase CFM by 20% to compensate Static Pressure (SP) SP is the resistance air faces as it moves through the system. ● Bathroom fans handle 0.1–0.4 inches w.g. ● A 300 CFM fan at 0.5 SP may only deliver 210 CFM. ● Always check the fan’s performance curve at your expected SP. Sone Rating Noise levels matter especially in quiet areas like bedrooms or home offices. ● 1 sone = Quiet bathroom fans with a low sone rating are ideal. ● 3 sones = normal conversation ● ENERGY STAR sets limits: ≤90 CFM fans: Max 2.0 sones and 201–500 CFM fans: Max 3.0 sones Local Climate In hot, humid states like Florida, Louisiana, you’ll need 20% more CFM to combat heavy moisture. Dry zones like Arizona may need less. Ceiling Height For ceilings over 8 ft, apply this adjustment: Adjusted CFM = Base CFM × (Ceiling Height ÷ 8) Example: 100 CFM × (12 ÷ 8) = 150 CFM Final Checklist Before You Buy Before purchasing your exhaust fan, verify these essentials: ● Calculated CFM using room volume, fixture count, and ceiling height ● Duct size & length are compatible with the desired CFM. ● Some ratings are suitable for the room type (≤1.0 for quiet areas). ● Check wiring and circuit requirements, like heat lamps often need a separate circuit. Final Thoughts: Get the Right Airflow, the First Time Proper ventilation fan sizing is important for the protection of your health, home, and investment. A well-sized 110 CFM fan, installed with proper ducting, minimal bends, and correct placement, can perform better than a 200 CFM fan that's poorly installed. So, take 15 minutes to measure your space, crunch the numbers, and evaluate ductwork constraints. I hope your query: What size ventilation fan do I need? Will be solved!

June 10, 2025

Crawl Space Vent Fans: Are They Worth It

Some reports claim that over 60% of the air you breathe on the first floor of your home comes from the crawl space. Imagine if that space is damp, musty, or contaminated, what will be its effect on your health? As a solution, homeowners go for the crawl space vent fans, but are they truly effective, or just a temporary fix? These confusions cause hesitation in buying a vent fan. Therefore, it's time for a reality check. Dig into the pros and cons of a crawl space vent fan before making a final decision. What Is a Crawl Space Vent Fan and What Is It Used For? A crawl space vent fan is an electrically or solar-powered fan that is installed in crawl space vents to circulate air, preventing stagnant moisture buildup actively. Unlike passive vents, which rely on natural airflow, vent fans forcefully push out humid air and fetch in fresh air, improving overall ventilation. A crawl space vent fan is installed for: ● Moisture control by preventing condensation. ● Remove odor and unpleasant smell caused by standing water. ● For air quality improvement by removing radon or VOCs. ● Reduces extreme temperature variations in HVAC ductwork or plumbing. ● Stops long-term structural damage due to wood rot and corrosion. Pros of Crawl Space Vent Fans Those who ask 'what are the advantages of crawl space vent fans?' can read down here: Actively Reduces Crawl Space Humidity and Moisture Mold growth, wood rot, and structural damage are promoted by excess moisture. However, AbeStorm crawl space vent fans have built-in de-humidistats with high-CFM ratings to remove humid air and draw in drier outside air. This constant air exchange helps maintain the relative humidity below 60%, the threshold recommended by the EPA. Prevents Mold, Musty Odors & Pests The crawl space fans help create an environment that's unfriendly to mold and pests by maintaining balanced airflow and reducing excess humidity. This ventilation keeps musty odors away and discourages insects and rodents that thrive in damp conditions. So, get the complete protection for your home's structure and indoor air quality. Improves Indoor Air Quality for Your Entire Home If that air is contaminated with radon, VOCs, or biological pollutants, it can impact respiratory health. Then, how to ventilate the crawl space to prevent radon? Simple! Get ventilation fans that help mitigate this by expelling contaminated air and ensuring a continuous flow of fresh air. Some models include filters to help trap particulates and improve air quality. Energy Efficiency With Smart Features One of the standout benefits of using crawl space ventilation fans is their energy efficiency. These fans are equipped with smart humidity and temperature sensors. With these features, the fan operates only when needed, which can reduce unnecessary power consumption. Plus, they also reduce the workload of the HVAC system. Simple DIY Installation Get easy-to-install crawl space vent fans with plug-and-play setup, pre-drilled mounting brackets, and intuitive controls. You can install most models within an hour without professional help. It is the best hassle-free upgrade for better crawl space ventilation and moisture control. Cons of Crawl Space Vent Fans The picture has another side too! Here are the disadvantages of vent fans: Not Ideal for Extremely Humid Climates No doubt, vent fans can reduce humidity, but in hot and humid regions, especially in areas with high humidity (above 60% RH), they can pull in more moisture than they remove. When warm, moist air enters a cooler crawl space, it can condense on wood, pipes, and insulation. Not a Substitute for Encapsulation or Sealing Vent fans can help, but they are not a complete solution if your crawl space lacks a vapor barrier, proper drainage, or sealing. It cannot alone solve persistent moisture problems. Using a vent fan without addressing these core issues may only provide temporary relief. Noise Level in Some Models Though most modern crawl space fans are designed for quiet operation, some units may produce noticeable noise, especially if installed near living spaces or improperly mounted. The best approach is to ensure that you get a quiet crawl space fan and check specs like dB rating for low decibel output. Improper Installation Can Reduce Effectiveness If you do not install crawl space fans correctly, like with poor positioning or no coordination with vapor barriers or sensors, they may do little to improve air quality or moisture levels. That’s why it’s important to follow the manufacturer’s guidelines, especially when using smart features. Final Words Your crawl space may be out of sight, but it should never be out of mind. A high-quality crawl space ventilation fan is a worthy investment in your home’s health, efficiency, and longevity. Just keep in mind where you are living because the climate and local humidity levels play an important role in choosing the right ventilation strategy. If you are ready to protect your home from mold, rot, and costly structural damage, explore AbeStorm’s trusted lineup of crawl space fans. FAQs Should a crawl space be vented or not? In hot, humid regions, venting may pull in moisture-laden air, worsening mold and humidity issues, so encapsulation and dehumidification may be better. In dry or temperate areas, venting with a controlled crawl space fan can help prevent condensation and mold. How long should a crawl space fan run each day? Smart crawl space fans with humidity sensors run when needed. On average, 2–4 hours per day may be sufficient. However, in humid climates or summer months, daily runtime may increase. What is the ideal humidity level for a crawl space? Experts recommend keeping crawl space humidity levels between 30% and 50%. Levels above 60% can lead to mold, wood rot, and pest infestations. Smart fans like those from AbeStorm activate automatically when humidity exceeds safe limits. Can a crawl space vent fan replace a dehumidifier? Not always. A crawl space fan is great for moderate humidity control and ventilation, but if you are dealing with constant moisture, flooding, or high relative humidity, a dehumidifier is required. In many cases, both systems work best together.

Do Houses Without AC Systems Need Ventilation

May 30, 2025

Do Houses Without AC Systems Need Ventilation

Do Houses Without AC Systems Need Ventilation Absolutely. Poor ventilation traps musty odors that become unbearable. This is especially critical during Southern US summers, when humidity makes homes feel oppressive. Without proper airflow, you'll face peeling drywall, warped cabinets, and potential health issues. This guide explains why ventilation is essential for AC-free homes and how to maintain healthy indoor air. Understanding Ventilation in Homes Ever notice how closed rooms get stuffy with stale air? That's poor ventilation. Simply put, ventilation is the process of bringing fresh air in while pushing contaminated air out, like your home's breathing. Opening windows and doors is the simplest way to ventilate the room. You can also use a ventilation fan to bring fresh air into the room and send out the "bad" air in the house. These "waste gases" include: Carbon dioxide from breathing Cooking fumes and odor Chemicals (formaldehyde, VOCs) from furniture and cleaners Humidity from showers and daily activities Allergens like dust and pet dander Bacteria and viruses Why Ventilation Matters (Especially Without AC) 1. Health ProtectionStagnant air concentrates harmful substances. Proper ventilation reduces triggers for respiratory issues, allergies, and long-term health risks—a critical fact: Gas/propane stoves cause up to 19,000 US adult deaths annually. Air purifiers can't eliminate carbon monoxide. 2. Moisture ControlThe biggest challenge is in humid regions like the South. Daily activities (showering, cooking, breathing) pump moisture into your home. Without ventilation: Mold grows on walls and ceilings Paint peels Wood structures rot Structural damage occurs 3. Oxygen MaintenanceVentilation prevents carbon dioxide buildup that causes headaches, dizziness, and fatigue. 4. Odor ReductionContinuous airflow removes stale smells (though it doesn't cool like AC). Warning Signs of Poor Ventilation Persistent musty smells Condensation on window Visible mold growth Increasing allergy symptoms Difficulty breathing indoors If you notice these, act immediately. For severe cases, install exhaust fans or dehumidifiers. Ignoring it often leads to $2,000+ mold remediation bills. Passive Ventilation: Natural Airflow Solutions Use physics to move air without electricity – ideal for AC-free homes. How it works: Stack EffectWarm air rises and escapes through high vents, pulling cool air through low openings. Wind-Driven VentilationWind forces air into your home (windward side) and pulls it out (leeward side). For example, they oriented the air intake windows toward the sea breeze in a Miami beachfront home. Benefits of Passive Ventilation: Reduces energy costs Lowers carbon footprint Improves indoor comfort Enhances air quality Requires minimal maintenance The stack effect is another natural way to cool a home. As warm air rises, it causes airflow between different levels in a building. Careful design is essential for this to work well, especially in multi-story houses. Adding shading features also helps with airflow. Shaded spots tend to be cooler, which encourages natural air circulation. Eaves and overhangs can be effective options. The materials used in buildings also influence passive ventilation. Breathable materials like bricks and stones help with natural air exchange, and properly sealing gaps and joints can improve control over air movement. If you do this right, you'll enjoy a cooler home and save on energy costs. Difference Between HVAC and Air Conditioning HVAC does more than just cooling – it covers heating, ventilation, and air conditioning to manage your whole indoor environment. Air conditioning focuses only on cooling things down. People often confuse the two because they look similar, but here's the key difference: HVAC combines heating units, ventilation fans, and cooling components in one system for year-round control. Air conditioners usually work alone or with basic fans. When choosing what's right for your home, consider your climate—HVAC for complete temperature management and AC if you just need relief from heat. Ventilation Without AC: Strategies for Maintaining Comfort Homes without AC need other ventilation methods. These keep indoor comfort and air quality. Design homes to use natural breezes. Cross-ventilation lets air flow through rooms, lowering indoor heat. Building features help ventilation. Big windows and well-placed vents move more air, and skylights add extra air exchange paths. Fans matter when natural wind fails. Some devices copy natural breezes with changing speeds. Smart home tech adjusts ventilation automatically. Systems respond to temperature and humidity shifts. Change daily habits for comfort. Wear season-friendly clothes and bedding. Cook outside to avoid indoor heat and dampness. There are different strategies that can replace AC. Boosting Airflow with Fans 260CFM Ventilation Fan works best in large rooms, creating steady breezes that make heat bearable. Add exhaust fans in kitchens and stuffy corners to push out hot air. Use adjustable-speed models to control airflow as weather changes. Plants: More Than Decor Plants pull toxins from the air and release oxygen, acting as natural purifiers. Place leafy varieties near windows – they cool through evaporation, especially helpful in dry climates. Water features like tabletop fountains add moisture to dry air. Combine plants and water for a fresh indoor oasis. Conclusion Get the air moving right in your AC-free home—crack those windows for healthier living, lean on nature's free cooling to save cash and the planet, and plan smart to stay comfy without cranking up energy bills.

What Temperature To Close Crawl Space Vents

April 21, 2025

What Temperature To Close Crawl Space Vents

Dampness can break into a house through several ways. Broken gutters, bad roofing, and structural problems are the root causes behind the access. But crawl space vents can serve as another key to the humidity entrance and present a harmful risk for mold formation and pest outbreaks. This is the reason various homeowners now question, What temperature to close crawl space vents? The brief answer is that it relies on the weather. This post will discuss when to open or close crawl space vents, the importance of the right timing, and how modern equipment, such as crawl space dehumidifiers and a crawl space ventilation fan, can save your house throughout the year. Why Crawl Space Vents Exist in the First Place? The true purpose of crawl space vents was to let clean air pass over the space under your house. Constructors thought this air circulation could maintain dampness levels way down and help avoid mold or wood decay. For several years, residents were advised to set out crawl space vents open or closed based on the season. Nevertheless, unlocked vents permit outdoor air, and with it, cold, moisture, or warm air into the crawl space. In damp summers, this introduces the humidity. During chill winters, it results in greater heating prices and frozen pipes. That being said, leaving crawl space vents open or closed at inappropriate times can bring about more damage compared to benefit. At present, builders suggest a regulated ventilation setup. Rather than depending on external weather, invest in machines such as a crawlspace ventilation fan or crawl space dehumidifiers. These control air circulation and dampness without the possibility that arises from open vents. So, What Temperature To Close Crawl Space Vents? The common rule is straightforward. Close crawl space vents in winter while outside temperatures dip below 40°F (4°C). Chill air penetrating via open vents can harden water pipes, increase heating prices, and generate condensation on chill surfaces. The occupants mostly question: should crawl space vents be open or closed during the winter? The answer is obvious: they must be shut. Locking the vents assists in catching heat, lowering air circulation, and saving your plumbing setup. Besides, in damp or rainy climates, you might have to close crawl space vents in summer. Humid air from outdoors can move humidity levels up in your house. Consequently, it supports mold development, wood decay, and damp smells. For those wondering when to open crawl space vents, the answer rests on your location’s climate and how thoroughly the crawl space is sealed. Also, several people invest in vent covers that lock mechanically depending on the temperature. The rest install a crawlspace ventilation fan with a thermostat to regulate airflow automatically. These devices clear away the assumptions from determining when to open crawl space vents or shut them. Problems Caused by Leaving Vents Open in the Wrong Season Making crawl space vents open at a bad time can lead to big issues. This is because your crawl space links to your remaining home. Dampness, air, and temperature variations underneath can influence protection, ease, and energy prices above. Winter Problems Cold Floors: Unlock vents allow cold air to go up in the living areas. Frozen Pipes: Chill air getting into the crawl space hardens water lines. Heat Loss: The HVAC setup functions more to maintain the home warm. This is the reason it’s significant to close crawl space vents in winter. Securing vents helps avoid freezing and keeps heat inside. Summer Problems in Humid Areas Moisture increase: Damp, hot air increases humidity levels under the house. Mold Formation: Wet insulation and wood turn into hotbeds for mold. Musty Smells: Humid air in the crawl space results in odors inside the home. When you stay in damp weather, don’t think vents must always remain open in summer. In various scenarios, it’s recommended to close crawl space vents and run a crawl space dehumidifier to extract excessive moisture. Signs You Should Keep Vents Closed or Consider an Upgrade At times, figuring out whether to keep crawl space vents open or closed is not sufficient. You are required to search for symptoms of bad situations. The problems appear when submissive venting is failing and when it’s the moment to utilize good devices such as crawlspace ventilation fan or crawl space dehumidifiers. Observe these distressing signals: Damp smells inside: Foul smells mostly arise from too much dampness under the floor. Mold on insulation or structural support: Mold suggests the crawl space is very humid. High moisture readings: When a hygrometer indicates over 60%, the air is too humid. Pest activity: Insects and rodents such as moist, dark crawl spaces. Wood decay or rot on HVAC tools: Signals of humidity harm. In that case, when you notice any of the above-mentioned, keeping the vents closed is an intelligent move. However, sealing the vents and running a crawl space ventilation fan or dehumidifier is much better. These setups give you complete control over dampness and air, regardless of the external climate. Having said that, Abestorm provides strong crawl space dehumidifiers made for limited headroom. The units work silently, drain mechanically, and need less upkeep. Also, they assist residents in preventing humidity issues without continuous inspection. Best Practices for Managing Crawl Space Year-Round The effective management of a crawl space is based on dampness, temperature, and your house’s locality. Regarding what temperature to close crawl space vents is an element of a grand scheme to save your house all year long. Stick to these easy seasonal suggestions: Winter: Close crawl space vents in winter to ensure freezing air stays out and pipes are secure. Apply insulation and invest in a crawl space dehumidifier to control indoor dampness. Summer (in humid regions): Hole vents shut to cut off humid air. Invest in a crawl space dehumidifier or crawlspace ventilation fan for air circulation and humidity management. Spring/Fall: Keep track of moisture levels using a hygrometer. Regulate dehumidification or ventilation depending on weather patterns. A thorough knowledge of when to keep crawl space vents open or closed prevents harm. Joining closed vents with the correct devices provides complete control over dampness and air. Conclusion Looking after your crawl space isn’t just about relief, it’s about avoiding actual issues such as mold, humidity harm, and energy loss. As the weather changes, little changes, for instance, closing up vents or controlling airflow, can be of value in your house’s well-being. Utilizing equipment such as a dehumidifier or a ventilation fan offers you more control, regardless of the season. Protect Your Crawl Space with Smart Solutions! If you’re in need of any kind of dehumidifiers or ventilation fans, look no further. Abestorm brings innovative products made for trustworthy, all-year-round use. Close your vents. Dry your space. Choose Abestorm for enhanced crawl space safety.

October 27, 2024

What are the Different Types of Ventilation Fans?

Whether in the office or at home, we spend most of our time indoors, so it is important to keep indoor air fresh and comfortable. Poor air quality is not only harmful to our health but can also damage goods and property if it contains particulates like water vapors. Ventilation fans ensure proper air circulation indoors and help avoid potential problems. There are different types of ventilation fans, each designed to serve different spaces. For instance, to remove stagnant air from a crawlspace, you need to use a crawlspace ventilation fan. Similarly, industrial fans can be used to remove harmful gases from factories. Let’s look at the various types of ventilation fans and how they can help improve indoor air quality in different settings. What are the Different Types of Ventilation Fans? Here are different types of ventilation fans, how they work, and where they are commonly used: 1. Exhaust Fans These are the common types of ventilation fans that remove stale, stagnant, moist, and polluted indoor air from an enclosed space and expel it outside. These are commonly used in kitchens, washrooms, and laundry rooms. Such types of fans such as kitchen exhaust fans and bathroom exhaust fans effectively neutralize bad odors like chemical smells, and cooking fumes, and reduce excessive moisture. Since these fans keep the room fresh by sending moist and smelly air from a particular indoor space to the outside, they reduce humidity and help prevent mold growth. Typically, exhaust fans can be installed on windows, walls, and ceilings. 2. Supply Fans Unlike an exhaust fan which expels indoor air, a supply fan brings fresh air from outside into the enclosed space where it is installed. It introduces fresh outdoor into the enclosed space and maintains positive air pressures. This keeps your indoor air fresh and comfortable. These fans are widely used in commercial settings such as sealed offices, factories, cleanrooms, laboratories, and hospitals. Also, a supply fan is used in an HVAC system. An HVAC supply fan works alongside exhaust fans to ensure proper airflow. 3. Axial Fans Axial fans ventilate air by moving it along the fan's axis. They use a propeller to move air. These fans are used in ventilation systems to move large volumes of air with minimal pressure difference. These are ideal for applications where high airflow is needed, but not high pressure, such as cooling towers, removing heat from data centers, or introducing fresh air in greenhouses. These are used in both residential and commercial ventilation systems. These fans help keep the environment fresh by continuously circulating large amounts of air without significantly increasing pressure. 4. Inline Fans These are special fans designed to be placed inside air ducts to help move air through long or complicated ventilation systems where traditional fans can’t be used. The inline fans increase airflow in areas that don’t have direct ventilation to the outside. They help move air from one room to another with the help of ducts. An inline fan for ductwork can be used in areas where regular fans can't be installed or provide insufficient airflow, such as crawl spaces, basements, kitchens, or washrooms. These fans are typically hidden and operate quietly due to their location. They can also provide airflow to multiple rooms. 5. Centrifugal Fans Centrifugal fans increase air pressure by moving air at a right angle from the intake. Unlike inline fans, centrifugal fans are used in areas where high pressure is needed. They spin the air as it enters the intake. These fans, also called blowers, pull air in from the center and blow it out to the side to create high pressure. They are designed for industrial applications, such as factories and laboratories, where air needs to be moved through long duct systems. 6. Mixed Flow Fans Mixed flow fans have features of both axial fans and centrifugal fans. This means they move air straight through the fan's axis but also produce high pressure like a centrifugal fan. This mixed operation allows these fans to handle large amounts of air over long distances while maintaining high pressure. This makes them an effective option for moving air longer distances. These ventilation fan types can be used to meet versatile ventilation needs. Their applications include tunnels, subways, parking garages (garage exhaust fans), shopping malls, large-scale greenhouses, hospital HVAC systems, and many other commercial applications. 7. Cross Flow Fans As the name suggests, these fans create a cross airflow, where the air moves across the fan's cylindrical blades. The air enters from one side of the blades and exits from the opposite side. These are called cross-flow fans because the airflow moves perpendicular to the fan's axis. These fans are used in places where gentle and consistent air circulation is needed over a large area. Common applications include air heaters, air conditioners, and cooling systems for electronics. 8. Crawl Space Fans These are a type of ventilation fan intended to ventilate and control humidity in crawl spaces. While these fans help reduce humidity, they can’t replace a humidifier if the conditions are too harsh. Crawl space fans create balanced airflow by drawing out stale and humid air and filling it with fresh outdoor air. These fans help control humidity and mold buildup in crawl spaces by ensuring proper air circulation. These fans are a quiet and energy-efficient way to remove smelly, moist crawlspace air and reduce the risk of mold growth. 9. Ceiling Fans These fans circulate the air in specific enclosed spaces or rooms. These are commonly used in homes and offices. They don’t remove air like exhaust fans. Instead, they circulate the air within the particular area they are installed in to create a cooling effect. They distribute the air evenly throughout the room by spinning their blades. The main applications include bedrooms, living rooms, and offices to create a cooling or heating effect. They enhance your comfort by creating a cooling effect in summer and a heating effect in winter if used in reverse and reduce the energy consumption of your HVAC system. Typically, they come with reversible blades for seasonal use. 10. Attic Exhaust Fans These fans are used to remove hot air from attics, especially during summer. Attics tend to get much hotter in the warmer seasons, and if this heat isn’t addressed in a timely manner, it can spread throughout your home, putting extra strain on your air conditioner. They work by venting out the hot air. By cooling the attic space, these fans reduce the load on your air conditioning system which in return helps lower energy costs. They remove existing heat and prevent future heat buildup, which can damage your roof. Therefore, using an attic fan helps extend the lifespan of your roof. 11. Whole House Fans Whole house fans are the most powerful types of ventilation fans designed to ventilate your entire home. They provide continuous fresh air circulation by pulling in fresh air from outside through windows and pushing stale indoor air outside through the attic. This ventilation system for home is very helpful when the homes are located in cooler regions as it replaces existing indoor air with fresh outdoor air. So, when outdoor air is cooler, it can replace the traditional air conditioning system. They are most effective when the outdoor air is cooler than the indoor air. Therefore, the best times to use these fans are in the morning or evening. Read this to find out the top 6 ventilation fans for bathrooms. Conclusion There are different types of ventilation fans, each engineered to serve a specific purpose. An exhaust fan helps remove stale indoor air from a particular room or space, whereas a whole-house fan ventilates your entire home. You can choose the one that best suits your needs. Remember, whichever option you choose, these fans can help reduce moisture and improve air quality, but they can’t replace air purifiers and dehumidifiers in most cases. If you are looking for a tailored solution to address your indoor air problems, you can visit our website or contact our support team. At Abestorm, our support team will help you find the best solution for your indoor air quality issues.