Dehumidifiers do two things when they are running. Their main mission is to remove the moisture from the air and turn it into water that can be drained away. The other thing they do is heat the house. They do not operate at 100% efficiency. The wasted energy is discharged as heat. The wasted electrical energy is turned into heat that is vented inside the house.
In the wintertime,
taking excess moisture out of the air and putting heat into the house are both
In the hot weather, the heat generated in the house is all wasted. The waste is doubled when the air conditioner has to work harder to kick the heat out of the house.
Running the dehumidifier and the air conditioner together will hit your electric bill for double the amount of heat put out from the dehumidifier.
best example that I remember, happened when I was working at a shipyard in
When I got there, I found a window type air conditioner sitting on a crate in the middle of the room. The air conditioner was running just fine with cold air blowing out one end and water dripping into a bucket at the other end.
As the air conditioner continued to run, the room kept getting hotter and hotter. The unit was blowing more hot air out the back end than cold air out the front end. Dehumidifiers are set up to run exactly the same way.
Using a dehumidifier in cool weather is a good thing. When the weather is hot, switch off your dehumidifier and run a properly installed air conditioner all by itself. It will both cool and dehumidify.
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