Dehumidifier Guides & Sizing Resources
Practical guides from sizing a basement unit to understanding the 2019 DOE standard, everything you need to choose and use a dehumidifier confidently.
How to Size a Dehumidifier for Your Basement
Learn how to calculate the right dehumidifier size for your basement using square footage, moisture level, and the 2019 DOE standard. Get the correct pint rating the first time.
Read full guide
Dehumidifier vs Air Conditioner: Which Removes More Moisture?
Dehumidifiers and air conditioners both remove moisture, but they work differently and have opposite uses. Learn which one you actually need for humidity control.
Read guideAll Articles
8 more guides
What Humidity Level Should a Dehumidifier Be Set To?
Set your dehumidifier too high and mold grows; set it too low and the air gets dry and uncomfortable. The right target is 45–50% RH, here's why and how to dial it in.
How Much Does Running a Dehumidifier Cost Per Month?
A correctly sized 35-pint dehumidifier costs about $9–$17 per month to run. Here's the full breakdown by unit size, climate, and efficiency rating.
Whole-House vs Portable Dehumidifier: Which Do You Need?
Whole-house dehumidifiers handle 90–130 pints per day across your entire home. Portable units handle one zone. Here's how to decide which you actually need.
Can a Dehumidifier Prevent Mold? What You Need to Know
A dehumidifier prevents mold by keeping relative humidity below 60%, where mold spores cannot germinate. But it can't kill existing mold, here's what it can and can't do.
Dehumidifier Sizing for Crawl Spaces: A Complete Guide
Crawl spaces need 30% more dehumidification capacity than above-grade rooms. Here's how to size correctly and choose between vented and encapsulated approaches.
When to Run Your Dehumidifier: Seasonal Guide for Homeowners
Run your dehumidifier spring through fall in most US climates. Winter operation depends on your climate zone and whether you have a low-temp unit. Here's the full seasonal breakdown.
Where to Place a Dehumidifier for Maximum Effectiveness
Where you put your dehumidifier matters almost as much as what size you buy. Here's how to position it for maximum moisture removal and airflow in basements and crawl spaces.
The 2019 DOE Dehumidifier Standard: What Changed and Why
The 2019 DOE rule lowered test temperatures from 80°F to 65°F, slashing stated capacities by 25–30%. A "70-pint" old unit is now a "50-pint" unit. Here's what that means for buying.