I've used these guys for years, they always give me a fair price and never do any work until they give me an estimate. I had a furnace go out and was worried it would need to be replaced, the only thing wrong was the coil was dirty because I hadn't been replacing my filter enough. The best part was they offer a free furnace filter every month. They gave me a punch card and and on the 1st of every month I go by their office and pick one up for free! How cool is that! Highly recommend!