Truly not the biggest in Macomb County, and not the smallest, but just right to care & provide honest service calls and integrity. Have hired them for a complete furnace install. 1– A-C unit , 2 — water heaters and this year alone I have hired them to gas pipe a dryer set up to gas, and last week they vented & connected a microwave flue . Mr Priebe himself, usually bids and or quotes the job, he and his crew complete the work, not sub contracted out. Also when your furnace or ac is on the fritz, your trusting someone, who knows the nuts & bolts of what is going on internally, several years back I had a furnace that would not fire up, I feared the worse. William came out that afternoon, diagnosed the system, found out it was a wire in the thermostat that needed to be soldered, which he did Service call $ 40 which included the repair, he could have said it was the always infamous«cracked heat exchanger« But as always did the right thing. Prompt Efficient Honest, small enough to care, big enough to provide great service & pricing