The unit was installed in July 2009. The cooling worked fine. When I used the heat cycle last week, things went wrong. My whole house main circuit breaker started tripping, and the unit constantly cycles between heat and cooling. IOW, when the heat cycle brings the house to the target temperature, the cooling cycle immediately kicks in. When the cooling cycle brings the temperature down 2 degrees F, the heat cycle starts again. Endless loop! The repair person has been here twice. Once to replace my thermostat ($415), the 2nd time to replace the thermostat 2 more times (no charge). That hasn't solved the problem. It's the unit, not the thermostat, but they won't admit it. They are going to try again tomorrow, but I expect no solution. I wish I had replaced my 15 year old York with a York! Apparently, other customers have this same problem (I overheard some cell phone discussions by the repairman). I wonder how of those customers even know their heat pump isn't working properly, just constantly cycling back and forth between heating and cooling and running up their electrical bill? I'm going to keep fighting with the installer until they repair it or remove it!

We replaced our old system with this new Ruud heat pump. A friend of ours installs these and he did a great job installing this. This is much queiter than our old heat pump.

My wife thinks this heat pump is okay but what does she know. I don't like it. My electric bill didn't change that much and its noisy.