I had a great experience with Opie's One Hour Heating and Air. I recently used their service to replace part of an air conditioning unit that needed help, and they also helped to provide a tune up for my furnace. They have also come out to do other work or me in the past, and in my experience, they have always been professional, friendly, and they always clean up after themselves when the work is done. I think that the pricing is great, too! Everything has turned out well for me so I would definitely recommend them to future customers.