I find construction people don't like to install geothermal because it is costs money that they need to subcontract & they prefer for their customers spend money on work they do.
Geothermal units are not prone to breaking down. Geothermal systems do use electric to run the compressor & pumps. They are extremely efficient. I have run mine for ten years with only a routine maintenance every few years. I put mine in prior to rebates & they pay back was 8 years.
Just because they are green, you shouldn't put them down.
I'm not putting anything down, just going by what I read and heard. Who else to get information from than people that have worked with the systems before?
It may also depend on where you live as well. Up north it gets pretty cold here, sometimes below zero numbers, so perhaps that's why I heard the negative stories that I have.
Right now it's in the lower 30's, and setting my temperature at 68 is just about perfect. When it gets colder outside, I need to crank it up to around 70 to 72 to be comfortable. For some reason, the colder it gets outside, the higher you need the temperature in your home. If heat pumps can't blow out that kind of temperature, of course it would be running constantly and you will never reach a comfort level. Like anything else, the more you run it, the more it's going to break down