9 AC Replacement Contractors in South San Francisco, CA

South San Francisco's cool marine Mediterranean climate, with foggy summers averaging 68 F and mild winters near 46 F, keeps cooling demand among the lowest in California. The persistent marine layer means HVAC work in this suburb of San Francisco leans heavily toward heating and ventilation. When systems fail during unexpected warmth, homeowners search for AC Replacement in South San Francisco, where nine contractors serve the area with an average rating of 3.7 across 123 reviews.

When South San Francisco homeowners invest in AC replacement, costs reflect system size and efficiency ratings. A basic 3-ton central AC ranges from $5,060 to $10,120, while a mid-efficiency 4-ton unit runs $6,900 to $12,880. High-efficiency 5-ton systems climb to $8,740 through $14,720. These prices include equipment, labor, and permit coordination. California law requires HVAC contractors to hold the C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license from the California Contractors State License Board, ensuring qualified installation that meets local codes.

Customer feedback reveals distinct strengths among South San Francisco's HVAC providers. Atlas Heating, operating since 1908, earns consistent praise for on-time arrivals, transparent pricing, and thorough clean-up, with 37 of 38 reviewers awarding five stars though one noted an emergency service delay. Fuse Service HVAC receives uniformly positive marks, with technicians Valentin and Sam specifically recognized for their expertise and professional conduct. Quality Conservation Services draws mixed reviews, with customers appreciating helpful technicians and smooth delivery experiences while others cite communication delays and concerns about thoroughness during service calls.