We have had our heat pump for 9 years. We had it installed before we moved into our house. We purchased this particular brand because it came with a lifetime warranty on the compressor. We have had the outdoor unit replaced once using the warranty after the compressor locked up the year after we had it installed. Since then, we have had very little done to it. In the summer, temperatures in Alabama can reach 100+ degrees and the heat pump still does a good job keeping the house cool. During the winter, we do use our emergency heat so that the heat pump does not run for long periods of time trying to warm the house. This has worked well for us, even when the outdoor temperature is in the teens. We use our regular heat when it is not too cold outside and the unit still does fine. Overall, we have been satisfied with our Amana heat pump. We have had it serviced once a year, with the outdoor and indoor coils being cleaned. If we had a complaint, it would be that it is not as quiet as the newer units that are advertised, but it is still quieter than our neighbor's outdoor unit. When it comes time to replace our Amana unit, we will definitely consider buying another unit. Unfortunately, the model we have is no longer available, with the warranty we have.