Verified · Fairfield
Trusted HVAC Companies in Fairfield, CA
Trust matters when you're inviting a pro into your home or business. These hvac companies in Fairfield have earned it through hundreds of verified reviews.
As of July 2026, RatingsNearMe ranks 11 hvac companies in Fairfield, CA by the RNM Score — a 0–100 rating built from Google ratings, review volume, sentiment, and profile completeness. The top-ranked is Same Day Heating, Cooling, Plumbing with a 4.9-star rating from 591 Google reviews and an RNM Score of 98/100. Also in the top tier: Dooley's Heating and Air and US Air Conditioning Distributors. The average rating across all listed hvac companies in Fairfield is 4.9 stars from 72 reviews per business on average.
HVAC service in Fairfield: $75–$150/hr for repairs; full system replacement $4,000–$12,000 depending on size and efficiency.
Rankings updated July 4, 2026 · RNM Score = ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Best Overall
CM Mechanical Heating & Air Conditioning
This business stands out as the top-ranked HVAC provider in Fairfield due to its consistently high ratings and reputation for quality service.
Most Reviewed
Dooley's Heating and Air
A high review count indicates broad customer experience and reliability, helping you gauge consistent service quality.
When choosing an HVAC provider in Fairfield, compare recent reviews and ask about warranties and service guarantees to ensure you get reliable, long-term support.
Local Market Snapshot
11
Businesses listed
4.9★
Avg rating
72
Avg reviews
Jul 4, 2026
Last updated
Top Rated HVAC Companies
Fairfield’s top-rated HVAC company with 4.9 stars from nearly 600 reviews.
200 American Way, Windsor, CA 95492, USATrusted by 66 locals with an exceptional 4.9-star rating.
1435A N Texas St, Fairfield, CA 94533, USATrusted by locals with a 4.9-star rating from 27 reviews.
815 Chadbourne Rd #110, Fairfield, CA 94534, USAHVAC Companies Rankings in Fairfield, CA
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | Same Day Heating, Cooling, Plumbing200 American Way, Windsor, CA 95492, USA | 4.9★ | 591 |
| #2 | Dooley's Heating and Air1435A N Texas St, Fairfield, CA 94533, USA | 4.9★ | 66 |
| #3 | US Air Conditioning Distributors815 Chadbourne Rd #110, Fairfield, CA 94534, USA | 4.9★ | 27 |
| #4 | CM Mechanical Heating & Air Conditioning1704 Carswell Ln, Suisun City, CA 94585, USA | 5.0★ | 3 |
| #5 | North Bay Air Systems Inc.1070 Horizon Dr STE M, Fairfield, CA 94533, USA | 5.0★ | 20 |
| #6 | Mckinley HVAC Contractor Fairfield1605 San Diego St, Fairfield, CA 94533, USA | 5.0★ | 20 |
| #7 | Golden State Comfort SystemsCapitola Way, Fairfield, CA 94534, USA | 5.0★ | 19 |
| #8 | Kazen Custom Heating & Air1076 Horizon Dr STE 15, Fairfield, CA 94533, USA | 4.6★ | 11 |
| #9 | Fairfield Heating & Air Conditioning709 Jackson St, Fairfield, CA 94533, USA | 4.6★ | 9 |
| #10 | A-1 COMFORT HEATING AND AIR280 Woolner Ct, Fairfield, CA 94533, USA | 5.0★ | 4 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated July 2026
All HVAC Companies in Fairfield
5.0 stars from 3 Google reviews, reflecting exceptional customer satisfaction.
1704 Carswell Ln, Suisun City, CA 94585, USA
Exceptional 5.0-star rating from over 20 Google reviews in Fairfield.
1070 Horizon Dr STE M, Fairfield, CA 94533, USA
Trusted locally with a perfect 5.0-star rating from over 20 reviews.
1605 San Diego St, Fairfield, CA 94533, USA
Exceptional 5.0-star rating from 19 reviews in Fairfield.
Capitola Way, Fairfield, CA 94534, USA
Trusted by locals with a 4.6-star rating from 11 reviews in Fairfield.
1076 Horizon Dr STE 15, Fairfield, CA 94533, USA
Boasts a 4.6-star rating from 9 customer reviews.
709 Jackson St, Fairfield, CA 94533, USA
Exceptional 5.0-star rating based on 4 Google reviews from local customers.
280 Woolner Ct, Fairfield, CA 94533, USA
Rated 4.9 stars from 23 reviews, this Fairfield HVAC company is highly trusted.
613 E Travis Blvd, Fairfield, CA 94533, USA
Get Free Quotes
We'll connect you with the top hvac companies in Fairfield, CA.
HVAC Companies in Fairfield, CA — Compared
| # | Business | RNM Score | Rating | Reviews |
|---|---|---|---|---|
| 1 | Same Day Heating, Cooling, Plumbing | 98/100 | 4.9 ★ | 591 |
| 2 | Dooley's Heating and Air | 91/100 | 4.9 ★ | 66 |
| 3 | US Air Conditioning Distributors | 86/100 | 4.9 ★ | 27 |
| 4 | CM Mechanical Heating & Air Conditioning | 78/100 | 5.0 ★ | 3 |
| 5 | North Bay Air Systems Inc. | 87/100 | 5.0 ★ | 20 |
| 6 | Mckinley HVAC Contractor Fairfield | 75/100 | 5.0 ★ | 20 |
| 7 | Golden State Comfort Systems | 86/100 | 5.0 ★ | 19 |
| 8 | Kazen Custom Heating & Air | 77/100 | 4.6 ★ | 11 |
| 9 | Fairfield Heating & Air Conditioning | 64/100 | 4.6 ★ | 9 |
| 10 | A-1 COMFORT HEATING AND AIR | 67/100 | 5.0 ★ | 4 |
Ranked by RatingsNearMe Score · ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · July 2026
Get your business on AI — ChatGPT, Perplexity & Google AI
AI assistants increasingly recommend local hvac companies straight from RatingsNearMe. Claim your spot in Fairfield to get featured in AI answers, comparison tables, and “best near me” results — where customers are actually searching now.
Frequently Asked Questions — HVAC Companies in Fairfield
How do I find the best hvac companies in Fairfield?
Look for businesses with 4.5+ stars, 50+ verified reviews, proper licensing and insurance, and transparent pricing. The top-ranked hvac companies in Fairfield on this page are scored by our algorithm that weighs ratings, review count, and profile completeness.
Are hvac companies in Fairfield licensed and insured?
Licensing requirements vary by trade and state. For most home service contractors, CA requires both a state license and liability insurance. Always ask any contractor for proof of current insurance and a copy of their license number before work begins — you can verify most licenses on your state licensing board's website.
How much do hvac companies charge in Fairfield, CA?
Prices vary by scope, materials, and contractor experience. Use the free quote form on this page to request estimates from multiple local pros simultaneously. Getting 3+ quotes is the single most effective way to avoid overpaying.
What should I look for when hiring a hvac companies in Fairfield?
Verify licensing and insurance, read recent reviews on multiple platforms, ask for a written estimate before work starts, confirm they pull permits when required, and check references from recent local projects. Featured businesses on this page are ranked by verified ratings and review quality.
How are the hvac companies on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
HVAC Companies in Nearby Cities
Compare top-rated hvac companies in cities near you.
How Rankings Work on This Page
Every hvac companies on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: July 4, 2026.
More Home Services in Fairfield
Related Searches
More ways to find hvac companies in Fairfield
HVAC Companies in nearby cities