Set up an appointment for an annual check-up. Our technician Troy was very efficient and courteous. Called in the A.M. with his ETA, showed up on time, removed his shoes when entering my house cause he saw that's what I do, asked several questions to make sure everything was working properly or if there was any concerns with how things are running. After the service, followed through with what was done, age of the units, how they are looking and what we can do to stretch-out it's life line. Made sure there were no questions or concerned. I have been using Hot 2 Cold for several years now and find they are a good company with great employees!