> Practically nobody does geothermal heat pumps here. The up-front cost is waaaaaay higher than any kind of normal (for us) set-up, not many people do it so tha

> Practically nobody does geothermal heat pumps here. The up-front cost is waaaaaay higher than any kind of normal (for us) set-up, not many people do it so that makes the cost even higher because the installation market is tiny, and energy costs aren't high enough to make the extra tens of thousands of dollars a good investment. This isn't true in all parts of the US. A family member of mine has had an open loop geo-thermal system for almost a decade now, and they're definitely not the only one in the area. I'd say about half of my neighborhood has air source heat pumps and about a quarter of the remaining have geo-thermal (vertical loops). There are two HVAC businesses in my area that specialize in nothing but ground source heat pumps. If there was no market, they'd be out of business. I think, where I am, it's harder to find a cognizant air source installer. Most of the HVAC businesses here are still under the misconception that air source isn't viable in our northern locale and often don't try to sell, or try to talk people out of them. But my air source is able to heat our house easily at 0F and is rated to run below -10F. It's currently my main heat source. Over the course of winter I'd guesstimate 60-70% heat pump heating overall.