Quote:
Originally Posted by MarkoD
I guess my question is, if I'm venting the warm dry exhaust outside, am I actually lowering the humidity in my fish room?
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That's a pretty must the most inefficient way of doing it but yes you're lowering humidity however not anymore than removing the dehumidifier and just using the fan would. Whatever goes through the dehumidifier goes outside so why use the dehumidifier which is only heating up the room which will actually increase humidify as warm air holds more moisture. The only difference is you're removing the water first and pumping the warmer and dryer air outside, so unless your goal is to waste energy you're not accomplishing anything more with the dehumidifier. Just use a fan on a humidistat to control the rooms humidity, otherwise you could also use an air conditioner to do the same thing as the dehumidifier but cool the room at the same time which will lower humidity further.