94/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 2,331 Google reviews, open 24/7.
- 4.9★ from 2,331 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2595 W 10th St, Antioch, CA 94509
Best HVAC Contractors in Pittsburg, CA (2026)
355 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Pittsburg: Perfect Star Heating, Cooling, & Electrical, CR Score 94/100; 4.9★ from 2,331 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Stewart Heating, Plumbing and Air Conditioning, posts 24/7 hours; ranked #2 of 355.
- 3
Most-reviewed: Service Champions, 5,220 Google reviews at 4.9★, the most of 355 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
355 Pittsburg HVAC contractors are ranked here by CR Score, from 8 published factors. 88 are open 24/7, 203 open Saturdays and 143 open Sundays, based on posted hours. The median Google rating is 4.9★ across 355 rated businesses.
Most of this list also appears on the HVAC contractors in Concord ranking. See HVAC contractors in Concord
Top 10 HVAC contractors in Pittsburg at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Perfect Star Heating, Cooling, & Electrical | 94 | 4.9★ (2,331) | Antioch, 3 mi away | 24/7 | Overall |
| 2 | Stewart Heating, Plumbing and Air Conditioning | 94 | 4.9★ (851) | Pittsburg | 24/7 | Emergencies |
| 3 | Service Champions | 93 | 4.9★ (5,220) | Martinez, 11 mi away | 24/7 | Most reviews |
| 4 | Hometown Heating and Air Conditioning | 93 | 4.9★ (2,463) | Concord, 9 mi away | 24/7 | — |
| 5 | Perfect Star Heating, Cooling, & Electrical | 92 | 4.9★ (1,255) | Concord, 8 mi away | 24/7 | — |
| 6 | Smart Heating and Air Conditioning | 92 | 5.0★ (151) | Pittsburg | 24/7 | — |
| 7 | Freschi Service Experts | 91 | 4.8★ (1,046) | Concord, 8 mi away | 24/7 | — |
| 8 | Elite Comfort Systems | 91 | 5.0★ (709) | Brentwood, 13 mi away | 24/7 | — |
| 9 | Chill Heating and Cooling | 91 | 5.0★ (481) | Walnut Creek, 11 mi away | 24/7 | — |
| 10 | Chill Heating and Cooling | 90 | 5.0★ (1,017) | San Ramon, 18 mi away | 24/7 | — |
The 355 best HVAC contractors in Pittsburg, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Pittsburg
94/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 851 Google reviews, open 24/7.
- 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 Martinez, 11 mi away
93/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 5,220 Google reviews, the most Google reviews on this list (5,220).
- 4.9★ from 5,220 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 261 Arthur Rd, Martinez, CA 94553
Based in Concord, 9 mi away
93/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 2,463 Google reviews, open 24/7.
- 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 Concord, 8 mi away
92/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 1,255 Google reviews, open 24/7.
- 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
92/100CR ScoreRanked #6 because of its Google rating and availability: 5.0★ from 151 Google reviews, open 24/7.
- 5.0★ from 151 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 928 Jewett Ave, Pittsburg, CA 94565
Based in Concord, 8 mi away
91/100CR ScoreRanked #7 because of its Google rating and availability: 4.8★ from 1,046 Google reviews, open 24/7.
- 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 Brentwood, 13 mi away
91/100CR ScoreRanked #8 because of its Google rating and availability: 5.0★ from 709 Google reviews, open 24/7.
- 5.0★ from 709 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 570 Valdry Ct C3, Brentwood, CA 94513
Based in Walnut Creek, 11 mi away
91/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 481 Google reviews, open 24/7.
- 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 San Ramon, 18 mi away
90/100CR ScoreRanked #10 because of its Google rating and availability: 5.0★ from 1,017 Google reviews, open 24/7.
- 5.0★ from 1,017 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 23 Beta Ct suite f, San Ramon, CA 94583
Based in Livermore, 24 mi away
90/100CR ScoreRanked #11 because of its Google rating and availability: 4.9★ from 4,721 Google reviews, open 24/7.
- 4.9★ from 4,721 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 207 Boeing Ct, Livermore, CA 94551
Based in Concord, 9 mi away
90/100CR ScoreRanked #12 because of its Google rating and availability: 4.9★ from 324 Google reviews, open 24/7.
- 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 Pleasanton, 24 mi away
89/100CR ScoreRanked #13 because of its Google rating and availability: 4.9★ from 3,438 Google reviews, open 24/7.
- 4.9★ from 3,438 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2158 Rheem Dr, Pleasanton, CA 94588
Based in Danville, 15 mi away
89/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 602 Google reviews, open 24/7.
- 4.9★ from 602 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 801 Lancelot Ct, Danville, CA 94526
Based in Antioch, 2 mi away
89/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 67 Google reviews, open 24/7.
- 4.9★ from 67 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Alamo, 7 mi away
89/100CR ScoreRanked #16 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 Pleasant Hill, 11 mi away
88/100CR ScoreRanked #17 because of its Google rating and availability: 4.8★ from 370 Google reviews, open 24/7.
- 4.8★ from 370 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3301 Vincent Rd, Pleasant Hill, CA 94523
Based in Concord, 7 mi away
88/100CR ScoreRanked #18 because of its Google rating and availability: 4.9★ from 109 Google reviews, open 24/7.
- 4.9★ from 109 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1900 Lynwood Dr Suite, Concord, CA 94519
Based in Pleasanton, 23 mi away
88/100CR ScoreRanked #19 because of its Google rating and availability: 4.8★ from 2,337 Google reviews, open 24/7.
- 4.8★ from 2,337 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7020 Commerce Dr, Pleasanton, CA 94588
Based in Berkeley, 25 mi away
87/100CR ScoreRanked #20 because of its Google rating and availability: 4.7★ from 3,311 Google reviews, open 24/7.
- 4.7★ from 3,311 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3333 Martin Luther King Jr Way, Berkeley, CA 94703
Based in Livermore, 24 mi away
87/100CR ScoreRanked #21 because of its Google rating and availability: 4.9★ from 920 Google reviews, open 24/7.
- 4.9★ from 920 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4935 Southfront Rd A, Livermore, CA 94551
Based in Pittsburg
87/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 107 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 8 AM–12 PM
- Address
- 251 Pheasant Cir, Pittsburg, CA 94565
Based in Bay Point, 4 mi away
87/100CR ScoreRanked #23 because of its Google rating and availability: 4.9★ from 30 Google reviews, open 24/7.
- 4.9★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2092 Shoreview Ct, Bay Point, CA 94565
Based in Alamo, 10 mi away
87/100CR ScoreRanked #24 because of its Google rating and availability: 4.9★ from 73 Google reviews, open 24/7.
- 4.9★ from 73 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Antioch, 6 mi away
87/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 292 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 292 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2825 Mayflower Dr, Antioch, CA 94531
HVAC contractors ranked #41 to #48
#1 to #25 are shown in full above. Here are #41 to #48, in CR Score order; each links to its profile. We publish the top 48 of 355 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 41 | Cali HVAC | 85 | 5.0★ (97) | 9 mi |
| 48 | Barker Heating & Cooling | 84 | 4.8★ (1,930) | 24 mi |
How much do HVAC contractors cost in Pittsburg?
National price ranges in USD, not adjusted for Pittsburg. 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 Pittsburg HVAC contractors
We scored 355 Pittsburg HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Pittsburg data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
HVAC contractors in Pittsburg: frequently asked questions
Who is the best HVAC contractor in Pittsburg?
By CR Score, the highest-ranked HVAC contractor in Pittsburg, CA is Perfect Star Heating, Cooling, & Electrical with a CR Score of 94/100. It has 4.9★ from 2,331 Google reviews. It is open 24/7. Stewart Heating, Plumbing and Air Conditioning (#2) and Service Champions (#3) follow. We ranked 355 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Pittsburg?
ContractorsRanked ranks 355 HVAC contractors serving Pittsburg, CA. 3 of them are based in Pittsburg; the rest serve it from nearby towns. Counts are as of October 2026.
Which HVAC contractors in Pittsburg are open 24/7?
88 ranked HVAC contractors in Pittsburg post 24/7 hours. The highest-ranked are Perfect Star Heating, Cooling, & Electrical (#1), Stewart Heating, Plumbing and Air Conditioning (#2) and Service Champions (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Pittsburg work on weekends?
203 of 355 ranked HVAC contractors post Saturday hours and 143 post Sunday hours. The highest-ranked open Saturdays are Perfect Star Heating, Cooling, & Electrical (#1), Stewart Heating, Plumbing and Air Conditioning (#2) and Service Champions (#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 Pittsburg?
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 Pittsburg. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Pittsburg HVAC contractors have?
The median Google rating among 355 rated HVAC contractors in Pittsburg is 4.9★, with a median of 16 reviews. Service Champions has the most, 5,220 reviews, and ranks #3. 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 Pittsburg?
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 Pittsburg
- October 2026: CR Scores recalculated for 355 hvac contractors serving Pittsburg.
- October 2026: 4 duplicate listings merged.
More HVAC contractors and Pittsburg pages
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