Kahl has a very professional and knowledgeable team. I am always comfortable with their employees in our home. They are respectful and on time. When I call they are able to get someone to the house in a very reasonable time frame. The quality of their work is great. Our heater was not coming on all the time due to a faulty igniter. This was replaced. They have also installed a Trane A/C unit for us about a year ago. Very satisfied with both visits.