The dehumidifier industry is regulated by the Association of Home Appliance Manufacturers (AHAM). AHAM requires that manufacturers publish unit performance at 80 degrees F and 60% relative humidity. However, as you know, real world conditions of basements and crawl spaces are much cooler than 80 degrees F, so unit performance drops dramatically.
For example, at 80 degrees F and 60% relative humidity the SantaFe “Classic” removes 100 pints per day. At real world conditions of 60 degrees F and 60% relative humidty the SantaFe “Classic” removes 44 pints per day.
- At these conditions cheaper units may not remove any moisture at all!
- At temperatures below 65 degrees F, frost forms on the coils of a conventional (inexpensive) unit and this causes the unit to ice up.
- Frost cuts down on air circulation so the unit does not remove much moisture from the air. Some units have automatic defrost but remove a minimal amount of water in conditions below AHAM (80 degrees/60%RH).
- Once the coil is defrosted the cycle starts 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.