We would not recommend One Hour. This unit was installed about 3 months ago, and it has already stopped working properly. The unit that was replaced had been installed by another company and had a recurring freon leak. For 10 years, that company would come out, add freon, and tell us that the leak was somewhere in the lines, but they never actually fixed the leak.We eventually called One Hour specifically to locate the leak. Their tech inspected the system and told us that the leak was in the air handler/coil. We were told that replacing the coil would be expensive and that we would be better off replacing the entire unit. Based on that recommendation, we decided to purchase a new system from One Hour. When the installers came, they worked all day and night. They did not finish until about midnight. The issue during the install was that they could not get the new system to hold freon pressure. I specifically told the installers about the history of the old system and the problems we had with the refrigerant lines. However, it seemed like whoever was in charge did not want to hear about those concerns. Eventually, they said the system was good and completed the install. About 3 months later, the new system was constantly running, was having difficulty reaching the set temperature, and eventually could not reach the temp at all. We contacted One Hour again and told them that we believed the system was low on freon. A tech came out and spent 25–30 minutes inspecting the system before telling us that the freon level was fine. This seemed unusual to us because, in our previous experiences, it only took 5–10 minutes to determine whether the system was low on freon. The tech then said she needed to go into the attic to check a damper. While she was in the attic, we went outside and noticed a bottle of refrigerant sitting next to our outdoor unit. We took pictures because we found this concerning, especially after being told that our freon level was fine. When the tech came back downstairs, she told us that one of the dampers was stuck. She explained that it was not an electric damper but one that moves with the airflow, and that it had a small amount of rust on it. She gave us a quote of a little over $700 to replace it. When the tech left, the system was still initially having difficulty reaching the set temperature. This was very similar to what happened every time the previous company added freon to our old system. They would tell us that it would take some time for the system to cool because the refrigerant needed to circulate through the lines. That night, the system started running normally. It has now been 2 weeks since the tech came out and the system has continued to operate properly. The damper that we were told was the problem has not caused any additional issues during that time. This raises several questions for us. If the damper was the cause of the problem, why was this issue not addressed or identified when the new system was installed only 3 months ago? Why were the refrigerant lines not replaced or thoroughly investigated when we specifically explained the history of the previous system and its recurring freon leak before purchasing the new system? The install itself also involved a situation where the new system initially would not hold pressure because of a slow leak. We are concerned that the actual problem may not have been properly identified or addressed. We also find it concerning that we observed a bottle of freon next to the unit while the tech was inspecting the system and then were told that the freon level was fine. We will still be scheduling the engineer to inspect the system. We will explain to him the entire history, including the problems with the previous system, the concerns we raised before the new install, the difficulty getting the new system to hold pressure during installation, what happened during the recent service call, and what we observed while the tech was here. At this point, we feel like we were lied to and someone was just trying to make commission off a sale.