13 Commercial HVAC Contractors in South San Francisco, CA

South San Francisco sits along the Bay, where the marine layer keeps summers cool and foggy around 68 F while winters hover near 46 F. This cool Mediterranean climate means businesses need heating and ventilation far more than air conditioning. With 14 commercial contractors serving the area and an average rating of 3.8 across 481 reviews, Commercial HVAC in South San Francisco remains driven by warmth, air quality, and year-round ventilation needs.

For business owners budgeting for ongoing service, annual maintenance per rooftop unit runs $475 to $1,900, while annual service contracts for small businesses under 5,000 square feet typically cost $950 to $4,750. Mid-size facilities between 5,000 and 25,000 square feet see annual contract ranges from $3,325 to $9,500. In California, commercial HVAC contractors must hold a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license from the Contractors State License Board, ensuring qualified hands handle complex heating and ventilation systems.

Reviewers consistently highlight several contractors who earn strong recommendations. Ace Furnace Co Inc holds a 4.9 rating with all 18 reviewers awarding five stars, frequently citing same-day or immediate service availability, skilled technicians, and reasonable pricing. Triton Appliance Repair draws praise for same-day response, transparent pricing, and technicians who explain problems clearly across 289 reviews averaging 4.8 stars. Atlas Heating earns recognition for on-time arrivals, transparent pricing, and thorough clean-up after jobs, with 37 of 38 reviewers giving five stars.