Black Diamond Heating & Air is an HVAC company serving Oakland, CA, and surrounding areas including Antioch, Brentwood, Byron, Discovery Bay, Oakley, and Pittsburg. They offer air conditioning and furnace repair, installation, and maintenance services for residential, commercial, and industrial clients. Their commercial HVAC capabilities include refrigeration installation and repair, with experience in manufacturing facilities, office buildings, supermarkets, and more. Established in 1984, Black Diamond Heating & Air has decades of experience providing heating and cooling solutions in Contra Costa County.

ACS Air Conditioning Systems is a family-owned HVAC company serving Oakland, CA, and the East Bay Area. Established in 1969, they specialize in HVAC repair, maintenance, and installation for heating and air conditioning systems. As a factory-authorized Carrier dealer, ACS offers expert advice on Carrier products and handles installations with a focus on quality and efficiency. Their services include air conditioning, furnace, and heat pump repair and installation, along with indoor air quality solutions.

Clarke & Rush is a well-established HVAC and plumbing company serving Sacramento, CA. With over 60 years of experience, they provide a wide range of services including air conditioning installation, heat pump and mini split installation, HVAC repairs, and tune-ups. Clarke & Rush is a certified factory authorized dealer of Carrier products and offers specialized capabilities such as REME Halo product installations and GoNano roof restoration treatments. Their team is NATE certified and licensed, ensuring skilled and knowledgeable service for both residential and commercial clients.

JC HEATING AND COOLING is a family-owned company based in Sacramento, CA, specializing in the installation and repair of residential and commercial heating and cooling systems. They offer services including air conditioner, furnace, heat pump, and boiler installation and repair, as well as HVAC tune-ups and duct cleaning to improve indoor air quality. Their certified technicians use advanced technology to diagnose and service a range of HVAC systems, ensuring proper function and comfort throughout the year.

Bell Brothers Plumbing Heating & Air - Concord provides HVAC tune-up services in Oakland, CA. They offer annual maintenance plans that include two tune-ups-one for air conditioning and one for heating-along with plumbing inspections to help maintain system efficiency and detect issues early. The company is recognized for quality and customer satisfaction in the East Bay area.