In the dead of a long, cold Boston winter, our gas furnace died. The first place we called came up with an unbelievable estimate, mostly due to the fact that the replacement part was hard to get and very, very costly. I called A.C. Rinaldi in Lynnfield to get a second opinion, and he knew right away that the particular part I needed was recalled and free replacements were sent out years ago. He even had one in stock, and had me bring my defective part to his shop and swap it for a good one, free of charge. You can't beat that kind of service, especially when there was nothing in it for him but goodwill. One thing: They're very busy, and can be pricey, which is the reason my recommend rating is a bit low. But it's worth sharing the story to let you know they're good people.