Or someplace with winters like Michigan? (Dec. – March rarely gets above freezing; occasionally as cold as -10 or -20 overnight for as much as a week, though usually lows around 15-20. Summers are 75-90 degrees and somewhat to extremely humid.)
I’m curious – as are several of my other local readers – about the following questions about using closed-loop ground heat exchange systems in our climate.
- How well does it work in our winters? I’ve heard that you need a backup heat source for anything under about 30 degrees.
- How much electricity does it use per year?
- How much electricity did you use before you installed the geothermal?
- What backup do you use (electric? gas?) and how much energy does it use per year?
- Does it do a good job with cooling?
- Does it do a good job with water heating?
- Overall, how much did your electric bill go up? How much did your other energy bills go down?