Wolverine Heating & Cooling repaired our furnace for us, and to be truthful, we have not used it much since then. Nowadays, we mostly use our pellet stove for heating, and keep the furnace for a backup. But Wolverine does good work, and I am sure it will be there working for us if and when we need it. The tech was a very nice person and he seemed to know exactly what he was doing. So, we were satisfied with them!