My furnace was not installed by Temperature Control but the company that did install it (18 years ago) changed hands several years ago and the new owners were totally unreliable. So I started calling Temperature Control for repairs. They always respond promptly and do the repairs at a fair price. But recently they went above and beyond the call of duty when they diagnosed a terminal problem, made temporary repairs and found the new furnace I wanted on December 23rd, then installed it in two and a half hours on Christmas Eve.