1,599 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Fullerton: Home Comfort USA, CR Score 65/100; 4.8★ from 2,813 Google reviews; open 24/7.
Best for emergencies (open 24/7): Dial One Sonshine Heating, Air & Plumbing, posts 24/7 hours; ranked #2 of 1,599.
Most-reviewed: Service Champions Plumbing, Heating & AC, 6,978 Google reviews at 4.9★, the most of 1,599 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,599 Fullerton HVAC contractors are ranked here by CR Score, from ten published factors. 541 are open 24/7, 1,234 open Saturdays and 862 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,599 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Home Comfort USA | 65 | 4.8★ (2,813) | Anaheim, 5 mi away | 24/7 | Overall |
| 2 | Dial One Sonshine Heating, Air & Plumbing | 65 | 4.9★ (2,852) | Santa Ana, 9 mi away | 24/7 | Emergencies |
| 3 | Absolute Airflow Air Conditioning, Heating and Plumbing | 65 | 4.8★ (4,319) | Westminster, 10 mi away | 24/7 | — |
| 4 | Veteran Air | 65 | 4.9★ (1,091) | Anaheim, 4 mi away | 24/7 | — |
| 5 | Service Hero Plumbing, HVAC, and Electrical | 64 | 4.8★ (1,840) | Orange, 6 mi away | 24/7 | — |
| 6 | Air Concepts Air Conditioning and Heating | 64 | 4.9★ (995) | Anaheim, 6 mi away | 24/7 | — |
| 7 | Power Pro Plumbing Heating & Air | 64 | 4.9★ (1,582) | Cerritos, 9 mi away | 24/7 | — |
| 8 | Service Champions Plumbing, Heating & AC | 64 | 4.9★ (6,978) | Brea, 5 mi away | Sat · Evenings | Most reviews |
| 9 | AARD Mechanical Air Conditioning & Heating | 64 | 4.9★ (547) | Brea, 4 mi away | 24/7 | — |
| 10 | NexGen HVAC & Plumbing | 63 | 4.7★ (2,250) | Anaheim, 8 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 2,813 Google reviews, listed on Google as “HVAC contractor”.
Based in Santa Ana, 9 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 2,852 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 10 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 4,319 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 4 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,091 Google reviews, listed on Google as “HVAC contractor”.
Based in Orange, 6 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 1,840 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 6 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 995 Google reviews, listed on Google as “HVAC contractor”.
Based in Cerritos, 9 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,582 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 5 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 6,978 Google reviews, the most in Fullerton.
Based in Brea, 4 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 547 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 8 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 2,250 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 8 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 1,899 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 4 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 439 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 3 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,019 Google reviews, listed on Google as “HVAC contractor”.
Based in Fullerton
Ranked #14 because of its Google rating and trade focus: 4.7★ from 438 Google reviews, listed on Google as “HVAC contractor”.
Based in Yorba Linda, 8 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 764 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Brea, 3 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 402 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 5 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 1,005 Google reviews, listed on Google as “HVAC contractor”.
Based in Orange, 6 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 1,511 Google reviews, listed on Google as “HVAC contractor”.
Based in Santa Fe Springs, 6 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 223 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Buena Park, 8 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 276 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Fountain Valley, 11 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 596 Google reviews, listed on Google as “HVAC contractor”.
Based in Garden Grove, 7 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 684 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Costa Mesa, 15 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 1,328 Google reviews, listed on Google as “HVAC contractor”.
Based in Orange, 6 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 4 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 135 Google reviews, listed on Google as “HVAC contractor”.
#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 1,599 ranked HVAC contractors here; the rest are on their profiles.
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 |
|---|---|---|
| AIR CONDITIONING & HEATING SPECIALTIES COMPANY, INC. | 5.0★ (2) | 3 mi |
| All for your air - air conditioner repair | 5.0★ (1) | In Fullerton |
| All Seasons Cooling & Heating | In Fullerton | |
| American Air Heating & Air Conditioning | In Fullerton | |
| American Service Alliance | 5.0★ (75) | 7 mi |
| Anderson Air Conditioning L.P. | In Fullerton | |
| Anthony's Reliable Heating & AC | In Fullerton | |
| Carter Services | 4.9★ (1,990) | 24 mi |
| Covenant Air Systems Inc | 3.0★ (2) | 4 mi |
| Direct Air Conditioning | 5.0★ (1) | In Fullerton |
| Econo Air | 4.4★ (292) | 6 mi |
| Heating and Air Conditioning | 5.0★ (2) | 2 mi |
| Heating and Air Conditioning Pros | In Fullerton | |
| HVAC Services Anaheim | 5.0★ (2) | 4 mi |
| KNC AIR CONTROL | 1.0★ (1) | In Fullerton |
| Living Air Design | 5.0★ (76) | 5 mi |
| Quality Heating & Air Conditioning Repair | 5.0★ (2) | In Fullerton |
| RighTime Home Services | 4.7★ (3,741) | 24 mi |
| Service Lion Plumbing Heating Air Electric | 4.7★ (1,173) | 4 mi |
| Wilson Duct Repair Service | 5.0★ (2) | 5 mi |
National price ranges in USD, not adjusted for Fullerton. 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 |
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).
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
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
We scored 1,599 Fullerton 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 Fullerton 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 |