Affordable Heating & Air Conditioning is an HVAC company serving Oakland, CA, and the Bay Area. They provide residential and commercial heating and air conditioning services including repair, installation, and tune-ups for all makes and models. With over 20 years of experience, their factory-trained technicians handle heating, cooling, refrigeration, and ventilation systems. The company emphasizes long-term maintenance and system upgrades to ensure reliable operation.

A Plus Heating and Air Conditioning provides heating, air conditioning, and HVAC installation services in Fremont, CA. The company offers a range of indoor comfort products from leading manufacturers such as Lennox, Trane, Carrier, and Goodman. They focus on delivering advanced HVAC solutions and maintain strong relationships with industry manufacturers to ensure up-to-date technology is available to their customers. A Plus Heating and Air Conditioning operates with locations across California, including Northern and Southern regions.

Swift Heating & Air is an HVAC company serving Fremont, CA, offering a wide range of heating and cooling services. Their expertise includes air conditioning repair, installation, and maintenance, as well as furnace and heat pump repair and replacement. They also provide specialized services such as ductless and mini split AC system installation, indoor air quality solutions like air purifiers and dehumidifiers, and commercial HVAC support. The company handles air duct sealing and sheet metal forming as part of their comprehensive HVAC offerings.

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.

O.C. McDonald Co., Inc. is a full-service mechanical contractor based in San Jose, CA, serving the greater Silicon Valley area. The company specializes in HVAC installation, plumbing, process piping, and building automation systems for commercial new construction, retrofits, and residential projects. With over 100 years of experience since 1906, they offer comprehensive design, installation, and 24-hour emergency service through a live operator to address urgent needs promptly.

Dukes Heating & Air Conditioning is a family-owned HVAC company serving Fremont, CA, and surrounding areas. Since 2005, they have provided repair, installation, and maintenance services for residential and light commercial heating and cooling systems. Their experienced team handles furnace repairs, heat pump installations, and HVAC tune-ups, ensuring year-round comfort. The owner has been in the heating and cooling business since 1971, bringing decades of expertise to every project.

AC Heating and Cooling Service Inc. is a family-owned HVAC company serving San Francisco, CA, and the Bay Area with over 45 years of experience. They provide a full range of heating, ventilation, and air conditioning services for residential, commercial, and industrial clients, including installation, repair, maintenance, and indoor air quality solutions. The company is known for integrating advanced IoT technology in HVAC systems to improve energy efficiency and system performance. They offer 24/7 emergency repair services without extra charges and back their work with a 12-month service guarantee and manufacturer warranties.

Heating, Cooling & Appliance Technique Inc provides HVAC repair, installation, and maintenance services in San Jose, CA. They handle air conditioning, furnace, heat pump, and duct replacement for both residential and commercial clients. The company offers 24/7 emergency service and uses advanced equipment to ensure thorough repairs and clean work areas. With many years of experience serving the San Jose area, they focus on tailored HVAC solutions and preventive maintenance to improve system efficiency and longevity.

Sunny HVAC and Appliance Repair is a service provider based in Fremont, CA, specializing in HVAC installation and appliance repair. They serve the broader Bay Area, including San Francisco, San Jose, Oakland, and Pleasanton. The company offers same-day appointments seven days a week and carries out repairs on major appliance brands, including refrigerators and HVAC systems. Sunny HVAC and Appliance Repair has been in business since 2011 and emphasizes licensed and insured technicians, with a focus on honest pricing and qualified service.