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Emergency HVAC Contractors in Alamo, CA (2026)

Top 50 of 544 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

    #1 for emergency heating and cooling in Alamo: 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 Alamo at a glance

Top emergency HVAC contractors in Alamo at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Service Champions664.9★ (5,220)Martinez, 11 mi away24/7
2Chill Heating and Cooling655.0★ (1,017)San Ramon, 6 mi away24/7
3Hometown Heating and Air Conditioning654.9★ (2,463)Concord, 11 mi away24/7
4Perfect Star Heating, Cooling, & Electrical654.9★ (1,255)Concord, 7 mi away24/7
5Comfy Heating & Air Conditioning644.9★ (602)Danville, 3 mi away24/7
6Jazz Heating, Air Conditioning and Plumbing644.9★ (3,438)Pleasanton, 14 mi away24/7
7Service Champions644.9★ (4,721)Livermore, 17 mi away24/7
8Albert Nahman Plumbing, Heating, and Cooling644.7★ (3,311)Berkeley, 13 mi away24/7
9Chill Heating and Cooling645.0★ (481)Walnut Creek, 6 mi away24/7
10Service Champions644.8★ (2,337)Pleasanton, 12 mi away24/7

Call an emergency HVAC contractor in Alamo 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.

The 50 emergency HVAC contractors in Alamo, 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 544 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.

  1. Ranked #1 in Alamo

    #1 Service Champions

    Based in Martinez, 11 mi away

    66/100CR 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
    View profile for Service Champions(925) 281-0532

  7. #7 Service Champions

    Based in Livermore, 17 mi away

    64/100CR Score

    Ranked #7 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
    View profile for Service Champions(925) 966-1366

  10. #10 Service Champions

    Based in Pleasanton, 12 mi away

    64/100CR Score

    Ranked #10 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
    View profile for Service Champions(925) 248-3458

  25. #25 Heise's Plumbing

    Based in San Francisco, 24 mi away

    61/100CR Score

    Ranked #25 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
    View profile for Heise's Plumbing(415) 333-0704

Top 50 of 544 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.

HVAC contractors in Alamo, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Rooter Hero Plumbing & Air of San Lorenzo604.7★ (265)12 mi
27Fuse Service604.9★ (54)5 mi
28Smart Heating and Air Conditioning605.0★ (151)13 mi
29Albert Nahman Plumbing, Heating, and Cooling604.6★ (474)15 mi
30Cyclone Air Systems Inc604.9★ (109)10 mi
31Eagle Air604.9★ (549)20 mi
32Fuse service605.0★ (29)2 mi
33Cali HVAC605.0★ (97)10 mi
34Heating And Air Experts - Affordable HVAC Contractor in Fremont, California605.0★ (761)24 mi
35Qualtech Heating & Cooling604.7★ (87)7 mi
36Same Day Air Conditioning & Heating604.5★ (700)16 mi
37Tyndall HVAC, Inc604.9★ (292)17 mi
38Haddon Heating and Cooling604.3★ (410)11 mi
39Art of Comfort605.0★ (153)15 mi
40Bay Area Climate Control604.9★ (162)15 mi
41AIS Heating & Air Conditioning595.0★ (172)17 mi
42AIS Heating & Air Conditioning594.9★ (723)24 mi
43JJ Heating and Air Conditioning Co594.8★ (155)14 mi
44Villquin Air Services594.9★ (172)16 mi
45Double R Heating & Air Conditioning594.9★ (174)16 mi
46Comfy Heating & Air Conditioning Inc.594.8★ (111)13 mi
47Arch Plumbing Inc.594.9★ (286)21 mi
48EHC HEATING AND COOLING594.7★ (55)9 mi
49One Hour Heating & Air Conditioning595.0★ (26)7 mi
50California HVAC594.9★ (59)12 mi

How we ranked emergency HVAC contractors in Alamo

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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Alamo: questions

Which HVAC contractors in Alamo are open 24/7?

25 on this list post 24/7 hours, including Service Champions, Chill Heating and Cooling, Hometown Heating and Air Conditioning, Perfect Star Heating, Cooling, & Electrical and Comfy Heating & Air Conditioning.

Who is ranked #1 for emergency heating and cooling in Alamo, CA?

Service Champions is #1, with a CR Score of 66 out of 100 on emergency weights.

How are emergency HVAC contractors in Alamo 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 Alamo

  1. October 2026: CR Scores recalculated for 544 hvac contractors serving Alamo.
  2. October 2026: 5 duplicate listings merged.

More emergency and heating and cooling pages