We found JDR cleaning services to be very professional and polite. They arrived exactly on time. We didn't have to do anything as they took care of shifting the stuff in our basement (which was little messy) to reach the duct openings etc.
The quality of service was excellent. They checked the furnace, ran some tests before and after blew ventings, registers and dryer vent.
We feel the prices to be absolutely reasonable, as this includes sanitation, applying disinfectants and deodorizers. Crew was quite, respectful and polite. Highly recommended.