On Thursday, December 20, 2018 at 12:14:07 AM UTC-5, Barbara Pratt wrote:
replying to Joseph Meehan, Barbara Pratt wrote:
I have just got one put in. It just sucks out the air in your basement to the
outside but my basement is still damp I need to get a dehumidifier for that.
But I did notice it made my upstairs colder and harder to heat. Not sure if I
like it.

--
for full context, visit https://www.homeownershub.com/mainte...ex-656207-.htm

I had not heard of Humidex before, but from your description, it sounds
similar to the WAVE thing that was heavily advertised on radio here.
A fan with a humidity sensor that pumps basement air outside, drawing
conditioned air into the basement. The ads brag about how little it
costs to operate. The fallacy there, as you've found, is that they
only look at the electric to operate the fan, ignoring the energy loss
by pumping conditioned air outside. The fan costs little to run.
The energy to heat or cool the outside replacement air brought in
is substantial. I'd use a dehumidifier.