Horrible, not recommended to use / call Blue Dolly repair service of Beaverton Michigan. Matt the owner of Blue Dolly installed repair parts into my furnace and the replacement parts failed after two months (same problem) and he charged a very high price for his service. I called Matt several times and left messages and my return phone number and Matt never returned my calls. I finally had another HVAC provider to fix my furnace problem and he said the parts that Matt has installed were of foreign China origins and looked to be recycled / used inferior quality parts. The HVAC repair man used new made in the USA furnace parts and now my furnace works as good as new. read more