Use like-for-like numbers
Compare AHAM to AHAM. If a listing emphasizes only saturation capacity, find its AHAM figure in the specification table or manual before comparing it with another unit.
Temperature changes performance
Refrigerant dehumidifiers collect less water as the air becomes cooler. For crawl spaces, check the operating-temperature range and automatic defrost behavior.
Capacity is not coverage
Coverage claims assume particular conditions. Air leakage, ground vapor, standing water and layout can overwhelm a machine even when the floor area appears to fit.
WHEN EQUIPMENT FITS
Now compare the machine to the job.
Check AHAM capacity, operating temperature, drainage, filter access and warranty before price.
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