Recent Review: My new home came with a one year warranty. The warranty company sent ''their'' heating company over. These guys did not have a clue how to work on these geothermal units.After 3 trips out the unit was not fixed. A friend of mine referred me to GEO SOURCE ONE, he said they were best in town for geothermal units, and he was right.I am a big do it yourselfer, and when I have to hire someone I expect them to know their stuff. A Saturday afternoon call got me in touch with Jeff the owner. He was fantastic, I learned a lot about geothermal from our phone call, he spent at least 1 hour on the phone with me, while I attempted to trouble shot the unit. It was 2 or 3 phone calls worth of time, and he was just so friendly and knew his stuff. We determined I needed a service call. The technician arrived on time, called when on the way. She was a whiz, she was able to get me fixed up fast, and my unit is purring and running and awesome. These guys are the best, I will use no one but Geo Source one.