Optimal RH With a Dehumidifier
There are two main types of whole-house dehumidifier systems: desiccant and refrigeration. Desiccant systems have a material that absorbs moisture from the air. As this material becomes saturated, it needs replacement. More advanced dehumidifiers use a refrigeration cycle much like an AC. That cycle extracts moisture from the air, which then drains out of the home. Basic dehumidifiers are good for minor RH issues. Refrigeration systems provide finer control and more robust dehumidification.
One reason portable dehumidifiers are inconvenient is that you have to clean them thoroughly every several days. That isn’t the case with an integrated system. It only needs maintenance once a year, and you can schedule that appointment alongside your spring cooling tune-up. Regular maintenance will protect your air quality, extend the life of your dehumidifier, and keep your operating costs low.
While your dehumidifier only needs service once a year, monitor it regularly. If you notice your home’s more humid than usual, you likely have a problem. One of the most common issues is a blockage in the condensate drain line. If moisture can’t flow freely from the unit, it has a switch that trips the system.
Another common problem is a dirty air filter that needs replacing. In some cases, the humidistat may be malfunctioning or not working altogether. It’s also possible the system could have a motor malfunction, or perhaps the circuit breaker tripped. There can also be an issue with the refrigeration cycle. That can be a refrigerant leak, compressor pump failure, or dirty evaporator coil.