The Bay Area’s Premier Mechanical Contractor Since 1978
J & J Air Conditioning is recognized as one of the area’s leading mechanical contractors with a reputation for excellence developed over 40 years serving our clients. Voted one of the "Top Workplaces," our company is built on the time-tested values of integrity and honesty. We’re committed to doing right by our customers and employees. Our well-trained mechanics and management team offer a depth of knowledge and the support capability to handle your HVACR needs from preventive maintenance to emergency response and the design and installation of state-of-the-art systems.