What Low-Temperature Operation Means
The dehumidification industry is regulated by the Association of Home Appliance Manufacturers (AHAM). AHAM requires that manufacturers publish unit performance at 80°F and 60% relative humidity. However, as you know, real-world conditions of basements and crawlspaces are much cooler than 80°F so unit capacities drop dramatically. For example, at 80°F and 60% relative humidity the Santa Fe Classic removes 100 pints per day. At real-world conditions of 60°F and 60% relative humidity the Santa Fe Classic removes 44 pints per day — conditions where cheaper 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 is powerful enough to control humidity even in the cooler environments of basements and crawlspaces.