Excellent customer service. They responded promptly to my damper problem. When I told them of the suggestion another company made about rigging a damper to "make it fit", they scoffed at the jerry rigger. They don't do that. Their technician "Tim" did professional work and ensured my HVAC system was working properly when he was done. After a month of having the repair done, my electric bill was cut in half. I set my thermostat and leave it running. read more