1,792 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Norwalk: Power Pro Plumbing Heating & Air, CR Score 66/100; 4.9★ from 1,582 Google reviews; open 24/7.
Best for emergencies (open 24/7): Absolute Airflow Air Conditioning, Heating and Plumbing, posts 24/7 hours; ranked #2 of 1,792.
Most-reviewed: Service Champions Plumbing, Heating & AC, 6,978 Google reviews at 4.9★, the most of 1,792 ranked; ranked #20.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,792 Norwalk HVAC contractors are ranked here by CR Score, from ten published factors. 629 are open 24/7, 1,389 open Saturdays and 1,035 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,792 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Power Pro Plumbing Heating & Air | 66 | 4.9★ (1,582) | Cerritos, 2 mi away | 24/7 | Overall |
| 2 | Absolute Airflow Air Conditioning, Heating and Plumbing | 64 | 4.8★ (4,319) | Westminster, 11 mi away | 24/7 | Emergencies |
| 3 | Orange Coast Plumbing | 64 | 5.0★ (276) | Buena Park, 2 mi away | 24/7 | — |
| 4 | American AC Heat Plumbing | 63 | 4.9★ (3,299) | Hawthorne, 15 mi away | 24/7 | — |
| 5 | Drain Right Services | 63 | 4.9★ (1,770) | Gardena, 12 mi away | 24/7 | — |
| 6 | Dial One Sonshine Heating, Air & Plumbing | 63 | 4.9★ (2,852) | Santa Ana, 15 mi away | 24/7 | — |
| 7 | Mega Clean Air | 63 | 5.0★ (223) | Santa Fe Springs, 3 mi away | 24/7 | — |
| 8 | Power Pro Plumbing Heating & Air | 63 | 4.8★ (2,576) | Gardena, 13 mi away | 24/7 | — |
| 9 | Brody Pennell Heating & Air Conditioning | 63 | 4.9★ (4,606) | Los Angeles, 19 mi away | 24/7 | — |
| 10 | JW Plumbing, Heating and Air | 63 | 4.8★ (2,541) | Los Angeles, 14 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: 4.9★ from 1,582 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 11 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 4,319 Google reviews, listed on Google as “HVAC contractor”.
Based in Buena Park, 2 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 276 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Hawthorne, 15 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 3,299 Google reviews, listed on Google as “HVAC contractor”.
Based in Gardena, 12 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 1,770 Google reviews, listed on Google as “HVAC contractor”.
Based in Santa Ana, 15 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 2,852 Google reviews, listed on Google as “HVAC contractor”.
Based in Santa Fe Springs, 3 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 223 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Gardena, 13 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 2,576 Google reviews, listed on Google as “HVAC contractor”.
Based in Los Angeles, 19 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 4,606 Google reviews, listed on Google as “HVAC contractor”.
Based in Los Angeles, 14 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 2,541 Google reviews, listed on Google as “HVAC contractor”.
Based in Torrance, 15 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 1,990 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 14 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 2,813 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 13 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,091 Google reviews, listed on Google as “HVAC contractor”.
Based in Downey, 4 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 467 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 547 Google reviews, listed on Google as “HVAC contractor”.
Based in Orange, 15 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 1,840 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 10 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 439 Google reviews, listed on Google as “HVAC contractor”.
Based in Long Beach, 8 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 310 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Anaheim, 8 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 1,019 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 13 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 6,978 Google reviews, the most in Norwalk.
Based in Norwalk
Ranked #21 because of its Google rating and trade focus: 4.7★ from 142 Google reviews, listed on Google as “HVAC contractor”.
Based in Whittier, 5 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 502 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 15 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 995 Google reviews, listed on Google as “HVAC contractor”.
Based in Whittier, 5 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 341 Google reviews, listed on Google as “HVAC contractor”.
Based in Los Angeles, 17 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 2,821 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 1,792 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 |
|---|---|---|
| Advantage Air | 5.0★ (2) | 5 mi |
| Air Conditoining & Heating Helper | 5.0★ (2) | 7 mi |
| Air West Mechanical Construction, Inc. | 3.0★ (2) | In Norwalk |
| Aire Serv of Pasadena | 4.9★ (394) | 17 mi |
| Anchor Emergency HVAC Repair Santa Fe Springs | 5.0★ (2) | 3 mi |
| CERTIFIED CONSTRUCTION HVAC SERVICES | 5.0★ (2) | 5 mi |
| Chirco Heating & Air Conditioning | 5.0★ (2) | 4 mi |
| Habra's Air Conditioning Installation Service | 5.0★ (2) | 5 mi |
| Hoffman Heating & Air | 3.0★ (2) | 3 mi |
| Hunter Mechanical Services | 5.0★ (2) | 4 mi |
| Koolrite Hvac | 5.0★ (2) | 5 mi |
| NexGen HVAC & Plumbing | 4.6★ (575) | 15 mi |
| NexGen HVAC & Plumbing | 4.7★ (538) | 14 mi |
| Next Level Energy Management Systems | 5.0★ (2) | 7 mi |
| Penguin Heating and Air | 5.0★ (144) | 12 mi |
| Power Pro Plumbing Heating & Air | 4.8★ (231) | 10 mi |
| Pure Eco Insulation | 5.0★ (2) | 8 mi |
| Sears Window Replacement | 3.0★ (2) | 3 mi |
| Shasta Heating & Air Conditioning Co | 5.0★ (2) | 4 mi |
| Southwest Heating & Air Conditioning | 4.8★ (326) | 14 mi |
National price ranges in USD, not adjusted for Norwalk. 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 1,792 Norwalk 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 Norwalk 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 |