I've had these guys replace a broken gas valve (with quite a few problems), install a gas line for a stove (no issues, did an excellent job), and finally had them attempt to fix my heat pump which they have not successfully resolved and seem to have basically given up trying.
To be fair, they have done a lot for me and tried several different fixes to solve the problem with the heat pump but in the end they basically just gave up and stopped calling me back when they said they would.
At this point my outside sensor doesn't work, and one of the original issues with the heat pump losing connection to the thermostat is still not fixed.
They are not a terrible company, and I believe they mean well, but at the end of the day they seem to have a lot of issues with organization and have been unable to fix what seems to be a relatively simple issue. For these reasons I would not recommend using this company.