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!