I had no doubt in my mind in 2004 that Approved Comfort was going to be my HVAC company for life. Thank you very much for your tenacity in resolving my furnace problems. The instructions that you gave the technician seemed to have resolved the problem. The heat cycles as it should. I would also like to thank you for the refund sent via a check last week.I appreciate your honesty. Warmest regards for a Healthy and Happy New Year.