Approved Comfort came out to do a schedule cleaning on my furnace. The technician did an amazing job cleaning my furnace, he also changed my filter and humidifier pad. I was totally unaware of how important it was to change your filters and pad regularly. Joseph our technician took the time to explain to us how to identify the brand, type and size of filters and pads we need. I was so impressed that not only did I become a preferred customer, I also recommend Approved Comfort to everyone I know.