Our furnace hadn’t been serviced in several years and we called Anderson to have it looked at before winter. We thought there was an issue, but the service technician noted that all was needed was to clean a few valves which was included in the service contract. We paid for the annual service contract where they come in the spring and fall/winter. So we don’t have to do anything this spring – they call us to schedule the visit!  Very professional and honest!
-Robert Schroeder