The Gold Standard Directory

The best hvac contractors in San Francisco, CA

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#1GOLD STANDARD PICK

Building Efficiency, Inc.

HVAC contractors, San Francisco, CA

4.9 stars36 reviews

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#2

Air Flow Pros Heating & Air Conditioning

HVAC contractors, San Francisco, CA

4.8 stars46 reviews

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#3

Schmitt Heating Co., Inc.

HVAC contractors, San Francisco, CA

4.3 stars70 reviews

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#4

Acosta Heating & Sheet Metal

HVAC contractors, San Francisco, CA

5.0 stars20 reviews

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#5

North Bay Construction, LLC

HVAC contractors, San Francisco, CA

4.5 stars15 reviews

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#6

All-Phase HVAC

HVAC contractors, San Francisco, CA

3.5 stars8 reviews

The best hvac contractors in South San Francisco, CA

How the order is set: in each area and niche, the highest Google rating among businesses with at least 25 Google reviews comes first, a tie goes to more reviews, and businesses with fewer reviews follow. The first card is the Gold Standard Pick. Ratings, reviews and contact details are from our own scan of the area. Nobody can pay for a place. Updated November 15, 2026.

The Gold Standard Directory by The Algo Vision.