TONS of info on them here on BP and on that "Series of Tubes" called "The Internets."

There is a bunch to learn on this website, You Tube can help you get a bunch to choose.  

It's generally a terrible way to heat, as it's almost always the most expensive option on the utility bill(versus gas forced air or gas hot water, for example.)

The forced air furnace were installed I just never realized there were no condensers on the property, which would have been the first sign it wasn't included.

. #2: SFR 3 bed 1 bath with basement, central air with a long term tenant in place paying $600 per month.

You may consider Air BNB but I understand that requires furniture etc.

@Leo Popescu I think everybody was blowing hot air, and doubt that many people are actually going to do that, even the celebrities that said they were are now backpedaling and saying they aren't moving except one or two, everybody is blowing this way out of proportion and nobody really knows what is going to happen.

They have about 200 right now and they air one out every week with different topics which are always very informative.

An air test might benefit first in case copper burst anywhere.

Maybe there are major foundation issues, or plumbing, or its still knob and tube and needs a complete re-wiring.