Kahl came in and fixed what the other company had not completed. We replaced out whole unit last year but it was not working properly and my bill was still high. I called them in and they fixed everything perfectly. Alex and Ethan were very polite and respectful young men. They handled themselves in a professional in experienced manner. Being Quick and efficient. When James was there to look at the unit, there was a wire that was overheating because it was not connected properly. He connected this on that visit at no cost. I would and have recommended Kahl heating to friends and other members of my church. Very reasonable also.