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Best HVAC companies in Vallejo, CA

The highest-scoring HVAC company in and near Vallejo is Hassler Heating and Air Conditioning, LLC (score 86, 4.9 stars from 704 Google reviews). 2 companies meet the 5 Star standard within 25 km.

Last updated Sep 25, 2026How we rank
  1. 1

    Hassler Heating and Air Conditioning, LLC

    4.9 · 704 Google reviewsEl Cerrito, CA27 years in business
    Free estimatesFinancing available
    86SCORE
    (510) 210-0857 WebsiteFull profile
  2. 2

    Honrath & Stacey Plumbing & Heating

    4.9 · 221 Google reviewsRichmond, CA
    69SCORE
    (510) 237-5080 WebsiteFull profile

We list only companies that clear our published bar, so this area is still filling in. As more HVAC companies near Vallejo qualify, they'll appear here automatically.

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HVAC companies in Vallejo: quick answers

Who is the highest-rated HVAC company in Vallejo, CA?

Hassler Heating and Air Conditioning, LLC has the highest 5 Star Score among HVAC companies in and near Vallejo: 86 out of 100, with a 4.9 star Google rating from 704 reviews.

How many 5 Star HVAC companies serve Vallejo?

2 HVAC companies meet our standard within 25 km of Vallejo: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 2 have 925 Google reviews between them, averaging 4.90 stars.

How are these HVAC companies ranked?

By 5 Star Score: rating quality adjusted for review count (45 points), review volume (25), review recency (15), years in business (10) and license verification (5). Businesses cannot pay to change their score.

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Ratings and review counts come from each company's public Google listing and are re-checked monthly. 5 Star Home Service Pros is independent; companies cannot pay for placement.