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Fairfield, California · HVAC

HVAC contractors in Fairfield, CA

6 HVAC contractors in Fairfield, out of 6 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.

Pros
6
Avg. score
63
Scored
6

Summary

Data last updated

As of October 1, 2026, the ProComfort Registry lists 6 HVAC contractors in Fairfield, California. Most-listed specialties: heating & furnaces (6), air conditioning (5), water heaters (2), ductwork & IAQ (1). 6 have enough public signals for a Registry Score, averaging 63 out of 100; 2 score 70 or higher. Together they hold 186 public reviews on Google, Yelp and Facebook. The highest-scored is Indoor Air Technologies, at 78 out of 100. View Indoor Air Technologies.

Counts come straight from the Registry's records. How the Registry Score works

Showing 1–6 of 6

HVAC contractors in Fairfield: at a glance

How many HVAC contractors are in Fairfield, California?
As of October 1, 2026, the ProComfort Registry lists 6 HVAC contractors in Fairfield, California.
Who is the highest-scored HVAC contractor in Fairfield, California?
By Registry Score, Indoor Air Technologies (Fairfield, CA) ranks first at 78 out of 100, among 6 scored businesses averaging 63. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
How are HVAC contractors in Fairfield, California ranked?
By Registry Score (0-100, from public reviews, digital presence and reach), with records confirmed by their owners listed first. The full method is at https://procomfortregistry.online/methodology.

What this list includes: heating, ventilation and air conditioning businesses (furnaces, heat pumps, A/C, climate control). Tags come from each business's public category and name, so a company can appear under several trades. HVAC contractors across the US