Next Day Air & Heating

Next Day Air & Heating operates as a licensed California HVAC contractor (license #950046) with a perfect 5-star rating across 524 client reviews. Headquartered in Cotati at 651 Portal St., the company maintains additional service locations in Modesto, Fresno, and Oakley while extending operations to Post Falls, Idaho. Their technicians provide residential and commercial heating, cooling, and indoor air quality solutions with round-the-clock availability, responding to emergency calls whenever problems arise.

The company distinguishes itself through transparent, budget-friendly pricing including a $59 furnace diagnostic fee and a $59 tune-up special that helps homeowners maintain efficient system performance year-round. Unlike contractors who complicate simple repairs, Next Day Air & Heating focuses on straightforward solutions, explaining each step clearly before work begins. Their team handlesheat pump installations, complete heating and cooling system replacements, and indoor air purification setups designed to address specific household air quality concerns.

Client reviews consistently recognize individual technicians by name. Customer Denny Tsang praised technician Rohan for explaining the diagnostic process thoroughly while delivering fast, honest service at an amazing price. In a more extensive project, Deana McAllister's review described how Kailen led a full heating and ducting replacement, with the crew arriving promptly each day, maintaining a immaculate work environment, and providing comprehensive system training upon completion.