I recently bought a home. That came with a new Train central air unit. And a heating system with digital controls. I wanted to have it serviced. So I found the original recipe. And it was installed by Alaskan Air. So I called them to service it. They were so nice and professional. And was able to get a tech to my home. In just a couple of days. The tech was very professional. And knowledgeable with my never system. I would highly recommend this company.