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Emergency HVAC Contractors in San Marcos, CA (2026)

Top 50 of 481 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 San Marcos: Action Air Conditioning & Heating, 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 San Marcos at a glance

Top emergency HVAC contractors in San Marcos at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Action Air Conditioning & Heating684.9★ (3,896)San Marcos24/7
2Anderson Plumbing, Heating & Air674.8★ (2,810)San Marcos24/7
3Sherlock Plumbing, Heating & Air674.9★ (4,132)Carlsbad, 4 mi away24/7
4John Stevenson Plumbing, Heating & Air Conditioning654.8★ (2,898)Carlsbad, 5 mi away24/7
5Mauzy Cooling, Heating, Plumbing, and Electrical654.8★ (1,303)Escondido, 2 mi away24/7
6My Guy Heating, Air & Plumbing634.9★ (360)Escondido, 4 mi away24/7
7Personal Plumbing Heating & Air Conditioning634.9★ (1,305)Oceanside, 11 mi away24/7
8Veterans Heating and Air Conditioning, Plumbing, and Electrical635.0★ (601)Oceanside, 9 mi away24/7
91800anytyme634.7★ (402)Vista, 4 mi away24/7
10Excel Air Conditioning, Heating & Plumbing634.9★ (222)Escondido, 3 mi away24/7

Call an emergency HVAC contractor in San Marcos 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 San Marcos, 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 481 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.

  9. #9 1800anytyme

    Based in Vista, 4 mi away

    63/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.7★ from 402 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 402 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2598 Fortune Way STE H, Vista, CA 92081
    View profile for 1800anytyme(800) 656-3569

  21. #21 CrackerJack Air Pros

    Based in Carlsbad, 7 mi away

    60/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.6★ from 151 Google reviews, listed on Google as “HVAC contractor”.

    • 4.6★ from 151 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2100 Palomar Airport Rd STE 214, Carlsbad, CA 92011
    View profile for CrackerJack Air Pros(501) 351-3462

  23. #23 Alanis Air

    Based in Escondido, 3 mi away

    60/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.7★ from 47 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 47 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1937 Julie Dawn Pl, Escondido, CA 92026
    View profile for Alanis Air(760) 270-8618

  24. #24 Acuna's Polar Aire

    Based in San Marcos

    60/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 19 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1138 Harwich Dr, San Marcos, CA 92069
    View profile for Acuna's Polar Aire(858) 486-2590

  25. #25 PR Wave Mechanical

    Based in Vista, 4 mi away

    60/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 30 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1487 Poinsettia Ave Suite 129, Vista, CA 92081
    View profile for PR Wave Mechanical(844) 669-8916

Top 50 of 481 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 San Marcos, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Williams Mechanical Co604.9★ (102)10 mi
27Action Air Conditioning & Heating604.9★ (384)18 mi
28Friar's Plumbing Heating and AC Repair604.9★ (626)21 mi
29Precision Temperature604.9★ (1,014)24 mi
30Vets for You Plumbing594.7★ (127)11 mi
31Better Air Systems595.0★ (12)1 mi
32Jackson & Foster Heating & Air Conditioning594.9★ (58)10 mi
33Vista HVAC & AC Pros595.0★ (16)3 mi
34Trusted Vista HVAC Services595.0★ (15)4 mi
35Air Quality Control Heating and Air conditioning595.0★ (53)12 mi
36Expert AC Repair Carlsbad595.0★ (25)7 mi
37Morrison Mechanical Heating & Air Conditioning Services595.0★ (123)17 mi
38Precision Escondido HVAC Repair595.0★ (21)7 mi
39ProFlo Air Conditioning, Heating & Plumbing594.9★ (113)16 mi
40Comfort Bros Heating Air Plumbing & Electrical584.9★ (424)24 mi
41FRYE Mechanical585.0★ (239)22 mi
42Valley Center Air Conditioning585.0★ (61)14 mi
43Smith & Sons Heating and Air Inc.585.0★ (203)22 mi
44Plotke Plumbing & Heating584.7★ (83)In San Marcos
45Progressive Heating & Air584.8★ (240)22 mi
46California Comfort Control584.0★ (19)5 mi
47Airtime Heating and Air585.0★ (151)22 mi
48CALCOAST HVAC L.L.C.585.0★ (3)In San Marcos
49JMS West HVAC584.4★ (9)5 mi
50Plumber Chula Vista by Castillo Works584.9★ (170)22 mi

How we ranked emergency HVAC contractors in San Marcos

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 San Marcos: questions

Which HVAC contractors in San Marcos are open 24/7?

25 on this list post 24/7 hours, including Action Air Conditioning & Heating, Anderson Plumbing, Heating & Air, Sherlock Plumbing, Heating & Air, John Stevenson Plumbing, Heating & Air Conditioning and Mauzy Cooling, Heating, Plumbing, and Electrical.

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

Action Air Conditioning & Heating is #1, with a CR Score of 68 out of 100 on emergency weights.

How are emergency HVAC contractors in San Marcos 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 San Marcos

  1. October 2026: CR Scores recalculated for 481 hvac contractors serving San Marcos.
  2. October 2026: 5 duplicate listings merged.

More emergency and heating and cooling pages