My Viessmann boiler stopped working and my maintenance service provider ghosted me. It was very cold outside and everyone was busy servicing their customers. After much searching, another reputable service provider recommended that I call Integrity Comfort and added that they service Viessmann boilers. I called them, they answered and sent a very knowledgeable technician out to my home and resolved the issue(s) in a timely manner. They called me when the work was complete, and left with my boiler working again. What a relief they were so dependable as I am currently in Florida while the broken boiler is in Maine. You will be very happy when you use these folks. read more