By far the best from any I have dealt with over the course of 45 years and three homes. They installed and converted our electric heat pump to a gas fired furnace about 2 years ago when we bought a new house. Simply outstanding service, price and support. This latest service call was from an issue we suspected was our thermostat, but ended up being a secondary filter we put in our cold intake to help cut down on airborne dust getting to the furnace. I had forgotten those were installed and they were reducing the air intake (as well as dirty and clogged) to cause the furnace to not work properly. Arrived much sooner than anticipated, dealt with the issue and performed some checks and troubleshooting, then provided some tips and advice on homeowner maintenance and troubleshooting. I wont go with any other company.