9 AC Replacement Contractors in South San Francisco, CA

3.7 avg rating
123 total reviews1 offer 24/7 service
Need emergency service? 5 HVAC providers in South San Francisco offer 24/7 availability

Top-Rated AC Replacement Contractors in South San Francisco

#1

Atlas Heating "The Original Since 1908" (Atlas Trillo is NOT us, please don't be confused)

4.7(39 reviews)

37 of 38 reviewers award 5 stars, with customers specifically praising on-time arrivals, transparent pricing, and thorough clean-up after jobs. Negative…

407 Cabot Rd, South San Francisco, CA 94080
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#2

Quality Conservation Services

4.6(36 reviews)

Of 36 reviews, the 5-star feedback highlights helpful technicians and smooth delivery experiences, while the 1-star review cites communication delays and…

265 Wattis Wy, South San Francisco, CA 94080
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#3

Fuse Service HVAC

4.6(26 reviews)

All 8 sampled reviews award 5 stars, with customers specifically naming technicians Valentin and Sam for their expertise and professional conduct. Positive…

121 S Maple Ave ste11, South San Francisco, CA 94080
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All AC Replacement Contractors (9 total)

Peninsula Heating BY JOSEPH BYRNE

5.0(10)

All 8 reviews award 5 stars, with Joe mentioned specifically in multiple accounts for professionalism and…

513 Linden Ave, South San Francisco, CA 94080
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All Air Mechanical Contractor

3.6(9)

Of nine reviews, three award five stars citing specific technicians and thorough work, while two award one…

535 Railroad Ave, South San Francisco, CA 94080
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Frank Miller AC and Heat

5.0(1)
24/7

1 customer review, 5 stars. The single review praises a new AC installation as excellent from start to…

215 4th Ln, South San Francisco, CA 94080
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Bayhill Heat & Air.

5.0(1)

The single 5-star review simply states 'The Best,' indicating high satisfaction. Website testimonials…

South San Francisco, CA 94080
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RMI Mechanical Contractors

1.0(1)

One customer review exists, assigning a one-star rating and describing a vehicle operation concern unrelated…

1385 Lowrie Ave, South San Francisco, CA 94080
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Master AC & Heating

0.0
510 Myrtle Ave #9, South San Francisco, CA 94080
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AC Replacement Costs in South San Francisco

Replacement costs for aging systems in South San Francisco. If repair cost exceeds 50% of replacement, replacement is usually more economical.

ServiceLowAverageHigh
Central AC (3-ton, basic)
$5,060$7,360$10,120
Central AC (4-ton, mid-efficiency)
$6,900$9,660$12,880
Central AC (5-ton, high-efficiency)
$8,740$11,500$14,720
Full HVAC system (AC + furnace)
$10,663$12,356$12,972
Plus ductwork replacement
If existing ducts are aged/leaking
$1,932$2,760$3,680
Repair cost threshold50% rule: if repair > 50% of replacement, replace

Prices reflect Pacific coast metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.

AC Replacement in South San Francisco, CA: What to Expect

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.

Frequently Asked Questions

AC replacement in South San Francisco runs $1,932-$14,720 depending on system size and efficiency. A 3-ton basic central AC costs $5,500-$11,000 installed, a 4-ton mid-efficiency system $7,500-$14,000, and a 5-ton high-efficiency unit $9,500-$16,000. Full HVAC replacement (AC + furnace combined) averages $11,590-$14,100.

All HVAC Contractors in South San Francisco, CA

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