What size dehumidifier do I need for my crawl space?

As long as moisture penetration is moderate, a 30-pint model will likely be large enough to effectively dehumidify a 1,500 square foot area, while a 50-pint model should be sufficient for a 2,000 square foot area.

Can I put a regular dehumidifier in my crawl space?

You may be wondering, “Can I put a regular dehumidifier in my crawl space?” The answer is ‘No’. A crawl space dehumidifier will work well in combination with vapor barriers. Together they will be attacking two main sources of humidity: ground and air.

Are crawl space dehumidifiers effective?

By using a dehumidifier in your crawl space, you are decreasing the moisture in the air and improving air quality. Improving indoor air quality through moisture control can reduce and perhaps even prevent some symptoms of allergies, including eye irritation, headaches, and respiratory issues.

Where should a dehumidifier be placed in a crawl space?

The best place for a dehumidifier is one where the discharged airflow is not blocked and where it can be easily drained. Keep in mind that some dehumidifiers can be noisy so you need to consider this before placing it in places where noise may be a nuisance.

Should you install a dehumidifier in your crawl space?

A dehumidifier is effective in controlling moisture in your crawl space, but uses electricity to do so, which can drive up your electricity bill. You must also keep it repaired and maintained. Some dehumidifiers also require electric fans placed throughout the crawl space to help move the air, adding to the electricity and maintenance costs.

Do I need a crawlspace dehumidifier?

Most crawl spaces need dehumidifiers, at least if you want to fully control your crawl space. A lot depends on the type of climate you live in. The more wet and humid it is, the greater chances you’ll need a crawl space dehumidifier. The typical number we use to guide us is 55.

What causes basement and crawl space humidity?

Whenever the outside air is warmer than the inside air, especially when the outside air is humid, you are likely to have a condensation problem in your basement or crawl space. This is because the Relative Humidity (RH) of air goes up 2.2% for every one-degree you cool it. Basements and crawl spaces are naturally cool because they are below ground level.