For season after season, Record Head Corporation hired Nimmer Heating for the maintenance and repair of our commercial heating and cooling systems. Season after season, we would start up the heat or air for the first time, and the fuse would always go out. This is what we were billed for time after time.. After many seasons (years), I decided to ask someone else to look at the system before we turned it on at the change of the season. I went along with this technician. We opened up the panel and found one fuse missing. Nimmer Heating was exchanging one fuse for the other season after season. After further inspection, we discovered the maintenance which I had been paying for was never done. The belt was deteriorated, and the filters were either missing or plugged with soot, which caused hundreds of dollars of damage to the systems. I trusted them for the maintenance for years. The Nimmer Company lied and cheated Record Head Corporation out of hundreds, if not thousands, of dollars. On top of this, while the Nimmer Company was maintaining service on my air and furnace units, they also installed a new unit in 2007, which has a 10-year warranty from the manufacturer. The unit that they put in was not installed 100% correctly, and we have been plagued with problems which have not been addressed by them. I had to hire a different Bryant dealer to follow up and repair the incorrect installation of this new unit, which cost well over $10,000.00.