67/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 5,220 Google reviews.
- 4.9★ from 5,220 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 261 Arthur Rd, Martinez, CA 94553
Emergency HVAC Contractors in Walnut Creek, CA (2026)
Top 50 of 533 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
If you smell gas, leave the building now and call your gas utility or 911 from outside.
The short answer
- 1
#1 for emergency heating and cooling in Walnut Creek: Service Champions, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
Top emergency HVAC contractors in Walnut Creek at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Service Champions | 67 | 4.9★ (5,220) | Martinez, 7 mi away | 24/7 |
| 2 | Hometown Heating and Air Conditioning | 65 | 4.9★ (2,463) | Concord, 7 mi away | 24/7 |
| 3 | Chill Heating and Cooling | 65 | 5.0★ (481) | Walnut Creek | 24/7 |
| 4 | Perfect Star Heating, Cooling, & Electrical | 65 | 4.9★ (1,255) | Concord, 5 mi away | 24/7 |
| 5 | Albert Nahman Plumbing, Heating, and Cooling | 64 | 4.7★ (3,311) | Berkeley, 12 mi away | 24/7 |
| 6 | Chill Heating and Cooling | 64 | 5.0★ (1,017) | San Ramon, 10 mi away | 24/7 |
| 7 | Freschi Service Experts | 64 | 4.8★ (1,046) | Concord, 8 mi away | 24/7 |
| 8 | Galaxy Heating & Air Conditioning | 64 | 4.8★ (370) | Pleasant Hill, 2 mi away | 24/7 |
| 9 | Perfect Star Heating, Cooling, & Electrical | 64 | 4.9★ (2,331) | Antioch, 14 mi away | 24/7 |
| 10 | Comfy Heating & Air Conditioning | 63 | 4.9★ (602) | Danville, 7 mi away | 24/7 |
Call an emergency HVAC contractor in Walnut Creek now
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
- #1Call (925) 281-0532
Open 24/7 · 4.9 from 5,220 Google reviews
- #2Call (925) 933-9333
#2Hometown Heating and Air Conditioning
Open 24/7 · 4.9 from 2,463 Google reviews
- #3Call (925) 350-7558
Open 24/7 · 5.0 from 481 Google reviews
- #4Call (925) 550-0505
#4Perfect Star Heating, Cooling, & Electrical
Open 24/7 · 4.9 from 1,255 Google reviews
- #5Call (510) 408-7879
#5Albert Nahman Plumbing, Heating, and Cooling
Open 24/7 · 4.7 from 3,311 Google reviews
- #6Call (925) 350-7558
Open 24/7 · 5.0 from 1,017 Google reviews
- #7Call (925) 722-5747
Open 24/7 · 4.8 from 1,046 Google reviews
- #8Call (925) 578-3379
#8Galaxy Heating & Air Conditioning
Open 24/7 · 4.8 from 370 Google reviews
The 50 emergency HVAC contractors in Walnut Creek, ranked
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 533 is on the HVAC contractors page.
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, 7 mi away
65/100CR 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 Walnut Creek
65/100CR ScoreRanked #3 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, 5 mi away
65/100CR ScoreRanked #4 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 Berkeley, 12 mi away
64/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.7★ from 3,311 Google reviews, listed on Google as “HVAC contractor”.
- 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 San Ramon, 10 mi away
64/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 1,017 Google reviews, listed on Google as “HVAC contractor”.
- 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 Concord, 8 mi away
64/100CR ScoreRanked #7 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 Pleasant Hill, 2 mi away
64/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 370 Google reviews, listed on Google as “HVAC contractor”.
- 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 Antioch, 14 mi away
64/100CR ScoreRanked #9 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 Danville, 7 mi away
63/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 602 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 602 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 801 Lancelot Ct, Danville, CA 94526
Based in Pleasanton, 18 mi away
63/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 3,438 Google reviews, listed on Google as “HVAC contractor”.
- 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 Livermore, 21 mi away
63/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 4,721 Google reviews, listed on Google as “HVAC contractor”.
- 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 Pleasanton, 17 mi away
63/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 2,337 Google reviews, listed on Google as “HVAC contractor”.
- 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 Concord, 6 mi away
63/100CR ScoreRanked #14 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 Pittsburg, 12 mi away
63/100CR ScoreRanked #15 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
#16 Fuse Service
Based in Walnut Creek
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 54 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 54 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1557 2nd Ave, Walnut Creek, CA 94597
#17 Cali HVAC
Based in Concord, 6 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 97 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 97 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1717 Solano Way STE 2, Concord, CA 94520
Based in Alamo, 4 mi away
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 73 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 73 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Concord, 7 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 109 Google reviews, listed on Google as “HVAC contractor”.
- 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 Concord, 7 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.3★ from 410 Google reviews, listed on Google as “HVAC contractor”.
- 4.3★ from 410 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 135 Mason Cir Suite L, Concord, CA 94520
Based in Brentwood, 21 mi away
61/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 709 Google reviews, listed on Google as “HVAC contractor”.
- 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 Livermore, 24 mi away
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 1,930 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,930 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7066 Las Positas Rd # G, Livermore, CA 94551
Based in San Francisco, 22 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 966 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 966 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 78 Dorman Ave, San Francisco, CA 94124
#24 Heise's Plumbing
Based in San Francisco, 24 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 1,454 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,454 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 260 Ocean Ave, San Francisco, CA 94112
Based in Pittsburg, 12 mi away
60/100CR 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
Top 50 of 533 HVAC contractors by emergency score
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
How we ranked emergency HVAC contractors in Walnut Creek
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |
Emergency HVAC contractors in Walnut Creek: questions
Which HVAC contractors in Walnut Creek are open 24/7?
25 on this list post 24/7 hours, including Service Champions, Hometown Heating and Air Conditioning, Chill Heating and Cooling, Perfect Star Heating, Cooling, & Electrical and Albert Nahman Plumbing, Heating, and Cooling.
Who is ranked #1 for emergency heating and cooling in Walnut Creek, CA?
Service Champions is #1, with a CR Score of 67 out of 100 on emergency weights.
How are emergency HVAC contractors in Walnut Creek ranked?
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
What should I do before the HVAC contractor arrives?
If you smell gas, leave the building now and call your gas utility or 911 from outside.
How many emergency HVAC contractors here list a phone number?
25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.
Update log for Walnut Creek
- October 2026: CR Scores recalculated for 533 hvac contractors serving Walnut Creek.
- October 2026: 5 duplicate listings merged.