Free tool
Dehumidifier Sizer
Size a crawl space dehumidifier by floor area and how damp the space is.
Based on common sizing charts for 80 degrees and 60 percent humidity. Real needs depend on soil, leaks and weather. We size and set up the unit on site.
How to use it
Three quick steps
- 1Enter the areaFloor area of the crawl space in square feet.
- 2Say how damp it isDamp, wet or standing water at times.
- 3Read the sizeSee pints per day and a suggested minimum rating.
Questions
About the dehumidifier sizer
Is this the exact size to buy?
It is a starting point based on common sizing charts. We confirm on site, including drainage and power.
Why does a leaky space need more?
Air leaks bring in moist outdoor air all the time, so the unit works harder. Sealing the space lowers the need.
What are pints per day?
Pints per day is how much water the unit can remove in a day under standard test conditions.
Next step
Services that go with this tool
Crawl Space Dehumidifier InstallationA crawl space dehumidifier, sized, drained and set to keep humidity down.See the service 
Dehumidifier Condensate Drain and PumpA tidy drain line so the dehumidifier empties itself.See the service 
Crawl Space Humidity MonitoringA small sensor that tells you the truth about the space under your house.See the service Ready to look under the floor?
Call or text, or send the form. Tell us what you have noticed and we will tell you how we would handle it.