64/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 5,220 Google reviews, the most in Fairfield.
- 4.9★ from 5,220 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 261 Arthur Rd, Martinez, CA 94553
Best HVAC Contractors in Fairfield, CA (2026)
255 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Fairfield: Service Champions, CR Score 64/100; 4.9★ from 5,220 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Hometown Heating and Air Conditioning, posts 24/7 hours; ranked #2 of 255.
- 9
Most-reviewed: Reliable Appliance, Heating and Air, 2,473 Google reviews at 4.9★, the most of 255 ranked after Service Champions; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
255 Fairfield HVAC contractors are ranked here by CR Score, from ten published factors. 54 are open 24/7, 139 open Saturdays and 94 open Sundays, based on posted hours. The median Google rating is 4.9★ across 255 rated businesses.
Top 10 HVAC contractors in Fairfield at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Service Champions | 64 | 4.9★ (5,220) | Martinez, 17 mi away | 24/7 | Overall |
| 2 | Hometown Heating and Air Conditioning | 63 | 4.9★ (2,463) | Concord, 17 mi away | 24/7 | Emergencies |
| 3 | Advanced Plumbing Heating and Air | 63 | 4.9★ (1,413) | Vacaville, 7 mi away | Sat · Sun · Evenings | — |
| 4 | Perfect Star Heating, Cooling, & Electrical | 62 | 4.9★ (2,331) | Antioch, 20 mi away | 24/7 | — |
| 5 | Right Now Air & Solar | 62 | 4.9★ (1,388) | Vacaville, 12 mi away | Sat · Sun · Evenings | — |
| 6 | Freschi Service Experts | 61 | 4.8★ (1,046) | Concord, 16 mi away | 24/7 | — |
| 7 | Perfect Star Heating, Cooling, & Electrical | 61 | 4.9★ (1,255) | Concord, 21 mi away | 24/7 | — |
| 8 | Stewart Heating, Plumbing and Air Conditioning | 61 | 4.9★ (851) | Pittsburg, 19 mi away | 24/7 | — |
| 9 | Reliable Appliance, Heating and Air | 61 | 4.9★ (2,473) | Alamo, 19 mi away | Sat · Sun · Evenings | Most reviews |
| 10 | AirFlow HVAC Experts | 61 | 5.0★ (29) | Fairfield | 24/7 | — |
The 255 best HVAC contractors in Fairfield, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Concord, 17 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 2,463 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,463 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4075 Nelson Ave Suite D, Concord, CA 94520
Based in Vacaville, 7 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 1,413 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,413 Google reviews
- Hours
- Mon–Fri 7 AM–9 PM · Sat–Sun 7:30 AM–8:30 PM
- Address
- 902 Davis St, Vacaville, CA 95687
Based in Antioch, 20 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 2,331 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,331 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2595 W 10th St, Antioch, CA 94509
Based in Vacaville, 12 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 1,388 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,388 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 821 Eubanks Dr STE C, Vacaville, CA 95688
Based in Concord, 16 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 1,046 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,046 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2440 Sprig Ct, Concord, CA 94520
Based in Concord, 21 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 1,255 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,255 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4415 Cowell Rd, Concord, CA 94518
Based in Pittsburg, 19 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 851 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 851 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 620 Garcia Ave ste a, Pittsburg, CA 94565
Based in Alamo, 19 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 2,473 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,473 Google reviews
- Hours
- Mon–Sun 6 AM–7 PM
Based in Fairfield
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 29 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 613 E Travis Blvd, Fairfield, CA 94533
Based in Benicia, 13 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 1,142 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,142 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 361 W Channel Rd, Benicia, CA 94510
Based in Dixon, 20 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 1,451 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,451 Google reviews
- Hours
- Mon–Fri 7:30 AM–6 PM · Sat 8 AM–4:30 PM · Sun 8 AM–4 PM
- Address
- 8235 Pedrick Rd, Dixon, CA 95620
Based in Fairfield
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 22 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1605 San Diego St, Fairfield, CA 94533
Based in Vacaville, 11 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 463 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 463 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 875 Cotting Ln STE H, Vacaville, CA 95688
Based in Napa, 13 mi away
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 912 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 912 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 7 AM–5 PM
- Address
- 794 Braydon Pl, Napa, CA 94559
Based in Walnut Creek, 22 mi away
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 481 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 481 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11 Cll Este, Walnut Creek, CA 94597
Based in Concord, 18 mi away
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 324 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 324 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1717 Solano Way STE 7, Concord, CA 94520
Based in Vacaville, 8 mi away
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.6★ from 156 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.6★ from 156 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 527 Stevenson St, Vacaville, CA 95688
Based in Fairfield
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Vacaville, 11 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 84 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 84 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 610 Eubanks Ct, Vacaville, CA 95688
Based in Winters, 20 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 339 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 339 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 27990 County Rd 90, Winters, CA 95694
Based in Vacaville, 8 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 536 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.8★ from 536 Google reviews
- Hours
- Mon–Fri 7 AM–7:30 PM · Sat 7:30 AM–4 PM · Sun closed
- Address
- 1021 Mason St Suite 11, Vacaville, CA 95688
Based in Fairfield
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 8 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3814 Danbury Way, Fairfield, CA 94533
Based in Fairfield
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 67 Google reviews
- Hours
- Mon–Sat 8 AM–8 PM · Sun closed
- Address
- 379 Pepperdine Ct, Fairfield, CA 94534
Based in Pittsburg, 20 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 151 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 928 Jewett Ave, Pittsburg, CA 94565
HVAC contractors ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 255 ranked HVAC contractors here; the rest are on their profiles.
Also serving Fairfield
20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| ACCO Engineered Systems | 5.0★ (2) | 11 mi |
| Bell Brothers Plumbing Heating & Air - Concord | 4.0★ (4) | 16 mi |
| Blue Mountain Construction Services | 3.9★ (120) | 11 mi |
| clean breeze air | In Fairfield | |
| Climate Concepts | 5.0★ (2) | 2 mi |
| Climate Source HVAC/R LLC | 4.9★ (29) | 19 mi |
| Eco Energy Bay Area | 4.6★ (11) | 24 mi |
| EHC HEATING AND COOLING | 4.7★ (55) | 19 mi |
| Fuse Service | 4.9★ (54) | 23 mi |
| GS Refrigeration | 4.0★ (4) | 19 mi |
| Jorge & Sons Water Heaters | 4.9★ (18) | 20 mi |
| One Hour Heating & Air Conditioning | 5.0★ (26) | 21 mi |
| Performance Heating & AC | 1.0★ (1) | In Fairfield |
| Rooter Hero Plumbing & Air | 4.8★ (1,291) | 21 mi |
| Select Home Improvements Fairfield | 4.2★ (21) | In Fairfield |
| SERVPRO of Fairfield | 4.7★ (22) | In Fairfield |
| Skyridge Plumbing | In Fairfield | |
| SOS PLUMBING, HEATING & AIR | 4.0★ (3) | 14 mi |
| Villara | In Fairfield | |
| XCEL Heating & Air Conditioning | In Fairfield |
How much do HVAC contractors cost in Fairfield?
National price ranges in USD, not adjusted for Fairfield. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
How to check an HVAC contractor's license in California
In California, Contractors State License Board (CSLB) licenses C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license.
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
- Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
When to hire an HVAC contractor in California
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
How we ranked Fairfield HVAC contractors
We scored 255 Fairfield HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Fairfield data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
HVAC contractors in Fairfield: frequently asked questions
Who is the best HVAC contractor in Fairfield?
By CR Score, the highest-ranked HVAC contractor in Fairfield, CA is Service Champions with a CR Score of 64/100. It has 4.9★ from 5,220 Google reviews. It is open 24/7. Hometown Heating and Air Conditioning (#2) and Advanced Plumbing Heating and Air (#3) follow. We ranked 255 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Fairfield?
ContractorsRanked ranks 255 HVAC contractors serving Fairfield, CA. 13 of them are based in Fairfield; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Fairfield are open 24/7?
54 ranked HVAC contractors in Fairfield post 24/7 hours. The highest-ranked are Service Champions (#1), Hometown Heating and Air Conditioning (#2) and Perfect Star Heating, Cooling, & Electrical (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Fairfield work on weekends?
139 of 255 ranked HVAC contractors post Saturday hours and 94 post Sunday hours. The highest-ranked open Saturdays are Service Champions (#1), Hometown Heating and Air Conditioning (#2) and Advanced Plumbing Heating and Air (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an HVAC contractor's license in California?
In California, Contractors State License Board (CSLB) handles licensing and covers C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).
How much does ac replacement cost in Fairfield?
AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Fairfield. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Fairfield HVAC contractors have?
The median Google rating among 255 rated HVAC contractors in Fairfield is 4.9★, with a median of 17 reviews. Service Champions has the most, 5,220 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire an HVAC contractor in Fairfield?
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
Update log for Fairfield
- October 2026: CR Scores recalculated for 255 hvac contractors serving Fairfield.
- October 2026: 3 duplicate listings merged.
More HVAC contractors and Fairfield pages
HVAC contractors near Fairfield
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Other trades in Fairfield
- Roofers in Fairfield531 ranked
- Plumbers in Fairfield269 ranked
- Electricians in Fairfield163 ranked
- General contractors in Fairfield345 ranked
- Painters in Fairfield68 ranked
- Landscapers in Fairfield77 ranked
- Handymen in Fairfield44 ranked
- Kitchen remodelers in Fairfield176 ranked
- Bathroom remodelers in Fairfield165 ranked
- Flooring contractors in Fairfield115 ranked
- Tile installers in Fairfield26 ranked
- Drywall contractors in Fairfield8 ranked
- Concrete contractors in Fairfield132 ranked
- Fence contractors in Fairfield62 ranked
- Deck builders in Fairfield67 ranked
- Siding contractors in Fairfield86 ranked
- Window installers in Fairfield252 ranked
- Gutter installers in Fairfield66 ranked
- Insulation contractors in Fairfield39 ranked
- Solar installers in Fairfield256 ranked
- Garage door repair companies in Fairfield67 ranked
- Foundation repair companies in Fairfield88 ranked
- Tree services in Fairfield133 ranked
- Masonry contractors in Fairfield49 ranked
- Water damage restoration companies in Fairfield255 ranked
- Home builders in Fairfield305 ranked
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- All contractors in Fairfield