daestrom wrote:

Dehumidifiers produce heat...

It's cheaper than electric resistance heat, with a COP of about 1.6.
You can measure this with a Kill-a-Watt meter and a measuring cup.

The COP doesn't matter as far as adding heat to the house goes. A kwh of
electric to run a dehumidifier adds a kwh of heat to the building, just
like a kwh of electricity through a resistance heater.

Wrong. It adds 1.6 kWh.

Care to explain where the extra 0.6 kwh came from??

Sure. Evaporating water takes energy. Condensing it releases energy.

Granted the vaporization energy removed from the moisture gets dumped into
the room as latent heat, but that energy was always there, you've just used
some entropy from the electricity to change the heat of vaporization to
latent heat.

I'd call that sensible heat. It makes the house warmer :-)

Nick