671 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Thousand Oaks: Conejo Services HVAC, Plumbing and Electrical, CR Score 66/100; 4.9★ from 2,368 Google reviews; open 24/7.
Best for emergencies (open 24/7): Dutton Plumbing, Cooling & Heating, posts 24/7 hours; ranked #2 of 671.
Most-reviewed: AZ Air Conditioning and Heating, 3,170 Google reviews at 4.8★, the most of 671 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
671 Thousand Oaks HVAC contractors are ranked here by CR Score, from ten published factors. 290 are open 24/7, 523 open Saturdays and 418 open Sundays, based on posted hours. The median Google rating is 4.9★ across 671 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Conejo Services HVAC, Plumbing and Electrical | 66 | 4.9★ (2,368) | Camarillo, 6 mi away | 24/7 | Overall |
| 2 | Dutton Plumbing, Cooling & Heating | 66 | 4.8★ (2,247) | Camarillo, 5 mi away | 24/7 | Emergencies |
| 3 | NexGen HVAC & Plumbing | 65 | 4.8★ (1,498) | Camarillo, 7 mi away | 24/7 | — |
| 4 | Fleetwell Air Conditioning Heating and Plumbing | 64 | 4.9★ (225) | Westlake Village, 1 mi away | 24/7 | — |
| 5 | Most Valuable Plumber | 64 | 4.9★ (190) | Thousand Oaks | 24/7 | — |
| 6 | AirWorks Heating Air Plumbing | 64 | 4.9★ (923) | Camarillo, 11 mi away | 24/7 | — |
| 7 | Rooter Hero Plumbing & Air | 63 | 4.9★ (537) | Simi Valley, 8 mi away | 24/7 | — |
| 8 | Monkey Wrench Plumbing, Heating, Air & Electric | 63 | 4.8★ (190) | Thousand Oaks | 24/7 | — |
| 9 | Top Shelf Heating and Air | 62 | 5.0★ (113) | Camarillo, 4 mi away | 24/7 | — |
| 10 | Southland Heating & Air Conditioning | 62 | 4.9★ (1,675) | Camarillo, 7 mi away | Sat | — |
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 in Thousand Oaks
Based in Camarillo, 6 mi away
Ranked #1 because of its Google rating and trade focus: 4.9★ from 2,368 Google reviews, listed on Google as “HVAC contractor”.
Based in Camarillo, 5 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 2,247 Google reviews, listed on Google as “HVAC contractor”.
Based in Camarillo, 7 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 1,498 Google reviews, listed on Google as “HVAC contractor”.
Based in Westlake Village, 1 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 225 Google reviews, listed on Google as “HVAC contractor”.
Based in Thousand Oaks
Ranked #5 because of its Google rating and trade focus: 4.9★ from 190 Google reviews, listed on Google as “HVAC contractor”.
Based in Camarillo, 11 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 923 Google reviews, listed on Google as “HVAC contractor”.
Based in Simi Valley, 8 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 537 Google reviews, listed on Google as “HVAC contractor”.
Based in Thousand Oaks
Ranked #8 because of its Google rating and trade focus: 4.8★ from 190 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Camarillo, 4 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “HVAC contractor”.
Based in Camarillo, 7 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,675 Google reviews, listed on Google as “HVAC contractor”.
Based in Calabasas, 7 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 207 Google reviews, listed on Google as “HVAC contractor”.
Based in North Hills, 23 mi away
Ranked #12 because of its Google rating and review volume: 4.8★ from 3,170 Google reviews, the most in Thousand Oaks.
Based in Simi Valley, 8 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 1,001 Google reviews, listed on Google as “HVAC contractor”.
Based in Moorpark, 8 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 1,791 Google reviews, listed on Google as “HVAC contractor”.
Based in Thousand Oaks
Ranked #15 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “HVAC contractor”.
Based in Westlake Village, 3 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 63 Google reviews, listed on Google as “HVAC contractor”.
Based in Beverly Hills, 7 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 164 Google reviews, listed on Google as “HVAC contractor”.
Based in Thousand Oaks
Ranked #18 because of its Google rating and trade focus: 4.9★ from 37 Google reviews, listed on Google as “HVAC contractor”.
Based in Chatsworth, 15 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 1,050 Google reviews, listed on Google as “HVAC contractor”.
Based in Westlake Village, 2 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 903 Google reviews, listed on Google as “HVAC contractor”.
Based in Simi Valley, 8 mi away
Ranked #21 because of its Google rating and review volume: 4.7★ from 2,766 Google reviews.
Based in Calabasas, 17 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 488 Google reviews, listed on Google as “HVAC contractor”.
Based in Simi Valley, 10 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 121 Google reviews, listed on Google as “HVAC contractor”.
Based in Thousand Oaks
Ranked #24 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “HVAC contractor”.
Based in Thousand Oaks
Ranked #25 because of its Google rating and trade focus: 4.9★ from 87 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 671 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 |
|---|---|---|
| AC911 | 4.7★ (46) | 8 mi |
| ACCO Engineered Systems | In Thousand Oaks | |
| Air King Heating & AC Repair Simi Valley | 4.9★ (41) | 8 mi |
| C & B Heating & Air Conditioning | 5.0★ (2) | 10 mi |
| Cmi Heating & Air | 5.0★ (1) | In Thousand Oaks |
| Craig's Heating & Air Conditioning Calabasas | 5.0★ (39) | 11 mi |
| Delta Air Conditioning Co., Inc. | In Thousand Oaks | |
| Expert Heating & AC Repair Newbury Park | 5.0★ (23) | 6 mi |
| Global Green Solutions | 4.9★ (90) | 15 mi |
| Global Mechanical Systems | In Thousand Oaks | |
| Hi-Builders Group inc. | 5.0★ (2) | 2 mi |
| Prime Cooling & Heating TO | In Thousand Oaks | |
| Reliance Heating & AC Repair Newbury Park | 5.0★ (19) | 5 mi |
| Simi Valley Air Conditioning and Heating | 4.9★ (40) | 10 mi |
| SoCal Hydronics | 5.0★ (2) | 5 mi |
| Summit Air Conditioning & Heating | 3.5★ (2) | 8 mi |
| Temp-Tec | 5.0★ (2) | In Thousand Oaks |
| TOP AC Inc LA Air Conditioning Contractors | 4.8★ (122) | 14 mi |
| Trinity Group Appliance HVAC Repair | 4.8★ (123) | 14 mi |
| Tru Earth Electric | 5.0★ (1) | In Thousand Oaks |
National price ranges in USD, not adjusted for Thousand Oaks. 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 671 Thousand Oaks 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 Thousand Oaks 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 |