Cool Ducts was contracted by Homeserve for Xcel Smarthome program. They cam to our home, did the tuneup and recommended we replace a capacitor in our air conditioner. We agreed and paid them for the part. 6 weeks later, I turned on the air conditioner and the unit was putting out hot air, raising the temperature in the house. I contacted them and they told them that our system was not operating. They offered to come out and if it was anything other than they work they provided there would be a trip charge. I would be willing if I chose to hire them to make the repairs, but since they would only be inspecting the parts and work they did, I don't feel they back up their service. I have subsequently canceled my Homeserve contract thru Xcel and do not recommend Cool Ducts. I am going to write reviews on both Homeserve and Xcel to share our experience so others can make an informed decision.