I used Wojo's Heating & Air Conditioning after a friend recommended them to me. When I called to make an appointment, they were very courteous, and very flexible with my scheduling. The workers came right out, showed up on time, and gave me an estimate. They did a really good job on my system. I found out later, but it seems they accidentally broke something and didn't tell me, but they are making things right. They also didn't clean up very well after themselves, but all in all, they did do a good job. I would consider using them in the future.