Lunar Air Systems

Lunar Air Systems is an HVAC provider in Union City, California. The company delivers heating, cooling, and indoor air-quality solutions for homeowners and businesses across the Bay Area, serving San Francisco, Santa Cruz, San Jose, Fremont, Gilroy, Daly City, and surrounding communities. Services span furnace service and repair, heat pump installation, AC service and repair, yearly maintenance, duct repairs and installation, and indoor air quality solutions. Lunar Air Systems holds a rating of 4.90 from customer reviews.

The company is led by owner James, who is directly involved in field response and customer care, including after-hours and weekend calls. Its technicians service all gas and electric furnace models, performing seasonal tune-ups that cover burners, heat exchangers, wiring, blowers, safety switches, and overall system performance. Heat pump work is a core specialty, with the team designing energy-efficient systems that move heat rather than generate it for homeowners looking to move away from gas-based heating. Filtration upgrades and air-quality improvements are offered alongside standard comfort work, and the staff frequently walks customers through simple fixes by phone when it can save a service call. Lunar Air Systems operates as a licensed California contractor under license 1048078 and is open seven days a week, around the clock.

The office sits on Oakdale Street, about a third of a mile from Union Landing Park, Pioneer Elementary School, and Cerruti Park. Alameda Creek and Crandall Creek run within roughly half a mile, and Union City Boulevard is a short distance to the east.

Customers consistently describe the work as meticulous and honest, and the business has built its reputation on thorough diagnostics, clear explanations, and owner-influenced quality standards across every project.