I own 3 rental properties, and had CHS do work on the furnaces of 2 of them. I was impressed wwith the speed and quality of the workmanship. The 2nd job, I was quoted by another company $$890 for the job. I thought it was too much, so got CHS out there despite already paying the $70 travel + $219 diagnostic fee (CHS doesn't charge the diagnostic fee) just on principle. I was told by CHS that it was a thermocouple, not a valve, and that it would cost me $175, 1/5th of the price charged by the other company! He could have charged me for a valve, and I wouldn't have known the difference (CHS was $520 for the valve on the other property btw, $370 less than the other guys). It's like gold finding a company that does such high quality work and has ethics. read more