I had a service issue from the original installation of my system by Capitol Heating. This system was installed in 2011 and in 2015 I explained the problem and they sent their tech to repair the problem, without charge. Initially, I was concerned with contacting Capitol and expected a large bill for the correction. I called others and they could fix it for a cost and I told them of the problem and they all stated that i should contact the installer. When I called them I was pleasantly surprised, as they took care of the problem, without a fee!!! Call Capitol for your heating and cooling needs!