are they any good?

yes



especially the geo thermal ones

What is a heat pump?

Dude, it like, pumps heat. https://www.nopistons.com/forums/pub...1047683664.gif

from what i understand it has a big underground pipe, full of water, and since the ground stays at 57 or so degrees all the time so does the um thingee. the inside unit, from what i gather is close to the same as an air conditioner

yup. expensive to install, but very cheap to run. and one gizmo does both the heating and a/c

crazy ralph's gotta tear up the whole backyard anyways....