Dehumidifiers are designed to remove the moisture from the air not to cool. Unfortunately, the way they remove this moisture is to reheat the air to further dry it after it releases its moisture. Basically, the room temperature humid air enters the dehumidifier where it is cooled to its dew point which results in its releasing its moisture. This dried air is then heated by the combination of latent heat of condensation, which is a natural result of the process, and by circulating through the condenser where heat is exchanged from it to the air. Furthermore, there is some additional heat generated by the compressor. The result is the air going back into the room will be slightly warmer than it was going in, usually around 10 to 15 degrees.
If you are having a problem with the room getting too warm, it also could be that the unit you are using is too small for the job so it is always running. You should be using a dehumidifier that is able to bring the humidity down to between 40 to 50 percent and then have an adjustable humidistat that will shut the unit off. This will allow the room not to get as warm as if the dehumidifier is constantly running.Soon though we can rely more on our Ac units for dehumidifying and cooling all in one
Understandable there , I have faced this issue before and I spent $1500 on a really top line dehumidifier that is capable of 110 pints minimal a day .. I used to use common store bought ones and found they run to long and have to be ducted nine times out of ten if they run constant or close to it ..
I run my dehumidifier only during the dark cycle to keep it around 45-50%.
