The Association of Home Appliance Manufacturers (AHAM) requires that dehumidifier manufacturers publish unit performance at 80°F and 60% RH. However, real-world conditions of basements and crawlspaces are much cooler and unit capacity drops dramatically. For example, at 80°F and 60% RH the Santa Fe Classic removes 110 pints per day. At real-world conditions of 60°F and 60% RH the Santa Fe Classic removes 60 pints per day—conditions where conventional units may not remove any moisture at all!
- At temperatures below 65°, frost forms on the coils of a conventional unit and causes the unit to ice up.
- Frost cuts down on air circulation so the unit does not remove as much moisture from the air.
- Some units have automatic defrost but remove a minimal amount of water in conditions below AHAM (80°/60% RH)
- Once the coil is defrosted the cycle starts all over again using a lot of energy but failing to take out an appreciable amount of water.
The Santa Fe free-standing line of dehumidifiers are powerful enough to control humidity even in the cooler environments of basements and crawlspaces.