I use Alpine Heating And Cooling to service my furnace every other year. I think they are a good company to work with. The technician who came out this time has come out before. He was right on time. He is very polite, nice and extremely knowledgeable about his industry and genuinely likes the work he does. I have no complaints about this company. I couldn't say anything bad. I think you can really trust these guys, they've done great by me. I appreciate that they are very friendly, some people are all growly, and don't want to help you or even be there, and that is not how this company and employees are! I highly recommend them to anybody!