I have used DeHart Plumbing, Heating, & Air a couple of times now and they have always done a great job. Last year I called them to put in an air conditioning unit at one of my rental properties. When it came time to put in an air conditioning and heating system into my own home I knew who to call. The HVAC professionals always show up on time and are very professional. They also do everything within the time frame they give you. I only have one qualm - the units are a bit expensive. I don't know much about heating/cooling units and the ones Dehart uses are good quality, so take my feedback with a grain of salt. I still recommended them to my sister the other day and will use them in the future.