66/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 2,247 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,247 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best HVAC Contractors in Simi Valley, CA (2026)
747 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Simi Valley: Dutton Plumbing, Cooling & Heating, CR Score 66/100; 4.8★ from 2,247 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Rooter Hero Plumbing & Air, posts 24/7 hours; ranked #2 of 747.
- 8
Most-reviewed: AZ Air Conditioning and Heating, 3,170 Google reviews at 4.8★, the most of 747 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
747 Simi Valley HVAC contractors are ranked here by CR Score, from ten published factors. 317 are open 24/7, 585 open Saturdays and 467 open Sundays, based on posted hours. The median Google rating is 4.9★ across 747 rated businesses.
Top 10 HVAC contractors in Simi Valley at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Dutton Plumbing, Cooling & Heating | 66 | 4.8★ (2,247) | Camarillo, 5 mi away | 24/7 | Overall |
| 2 | Rooter Hero Plumbing & Air | 65 | 4.9★ (537) | Simi Valley | 24/7 | Emergencies |
| 3 | Conejo Services HVAC, Plumbing and Electrical | 65 | 4.9★ (2,368) | Camarillo, 10 mi away | 24/7 | — |
| 4 | Integrity Comfort Systems | 64 | 5.0★ (1,001) | Simi Valley | Sat · Evenings | — |
| 5 | NexGen HVAC & Plumbing | 64 | 4.8★ (1,498) | Camarillo, 11 mi away | 24/7 | — |
| 6 | MB Heating and Air | 63 | 5.0★ (121) | Simi Valley | 24/7 | — |
| 7 | AirWorks Heating Air Plumbing | 63 | 4.9★ (923) | Camarillo, 12 mi away | 24/7 | — |
| 8 | AZ Air Conditioning and Heating | 63 | 4.8★ (3,170) | North Hills, 18 mi away | 24/7 | Most reviews |
| 9 | Dutton Plumbing, Cooling & Heating | 63 | 4.7★ (2,766) | Simi Valley | 24/7 | — |
| 10 | United Heating & Air Conditioning | 63 | 4.8★ (164) | Beverly Hills, 1 mi away | 24/7 | — |
The 747 best HVAC contractors in Simi Valley, ranked
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.
Based in Simi Valley
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 537 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 537 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 94 W Cochran St C, Simi Valley, CA 93065
Based in Camarillo, 10 mi away
65/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 2,368 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,368 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2550 Azurite Cir, Newbury Park, CA 91320
Based in Simi Valley
64/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 1,001 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,001 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun closed
- Address
- 2245 First St UNIT 107, Simi Valley, CA 93065
Based in Camarillo, 11 mi away
64/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 1,498 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,498 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3615 Old Conejo Rd, Newbury Park, CA 91320
Based in Simi Valley
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 121 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 121 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4440 Industrial St, Simi Valley, CA 93063
Based in Camarillo, 12 mi away
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 923 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 923 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3379 Somis Rd Unit F, Somis, CA 93066
Based in North Hills, 18 mi away
63/100CR ScoreRanked #8 because of its Google rating and review volume: 4.8★ from 3,170 Google reviews, the most in Simi Valley.
- 4.8★ from 3,170 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 13190 Telfair Ave, Sylmar, CA 91342
Based in Simi Valley
63/100CR ScoreRanked #9 because of its Google rating and review volume: 4.7★ from 2,766 Google reviews.
- 4.7★ from 2,766 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1720 E Los Angeles Ave ste d, Simi Valley, CA 93065
Based in Beverly Hills, 1 mi away
63/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 164 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 164 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Simi Valley
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2380 Shasta Way B, Simi Valley, CA 93065
Based in Moorpark, 5 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 1,791 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,791 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
- Address
- 331 Science Dr, Moorpark, CA 93021
Based in Simi Valley
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 57 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4452 Industrial St, Simi Valley, CA 93063
Based in Westlake Village, 8 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 225 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 225 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3075 E Thousand Oaks Blvd #36, Westlake Village, CA 91362
Based in Chatsworth, 12 mi away
62/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 1,050 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,050 Google reviews
- Hours
- Mon–Fri 7:30 AM–8 PM · Sat–Sun 8 AM–4 PM
- Address
- 9601 Cozycroft Ave Unit 1, Chatsworth, CA 91311
Based in Camarillo, 6 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 113 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Simi Valley
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 330 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 330 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–1 PM · Sun closed
- Address
- 4525 Industrial St unit 4T, Simi Valley, CA 93063
#18 Rowland Air
Based in Santa Clarita, 23 mi away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 1,810 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,810 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17007 Sierra Hwy, Canyon Country, CA 91351
Based in Calabasas, 10 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 207 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 207 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 27001 Agoura Rd #350, Calabasas, CA 91301
Based in Simi Valley
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 59 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 59 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2511 Royal Ave, Simi Valley, CA 93065
Based in Calabasas, 16 mi away
61/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 488 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 488 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 18356 Oxnard St #3, Tarzana, CA 91356
Based in Thousand Oaks, 8 mi away
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 190 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.8★ from 190 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3275 E Thousand Oaks Blvd Suite 216, Thousand Oaks, CA 91362
Based in Camarillo, 11 mi away
61/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 1,675 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,675 Google reviews
- Hours
- Mon–Fri 7:30 AM–6 PM · Sat 9 AM–5 PM · Sun closed
- Address
- 3543 Old Conejo Rd #101, Newbury Park, CA 91320
Based in Simi Valley
61/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 41 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.9★ from 41 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 725 Cochran St, Simi Valley, CA 93065
Based in Simi Valley
61/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 36 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2655 First St suite 509, Simi Valley, CA 93065
HVAC contractors ranked #26 to #50
#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 747 ranked HVAC contractors here; the rest are on their profiles.
Also serving Simi Valley
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 |
|---|---|---|
| Advanced Air Systems | 5.0★ (1) | In Simi Valley |
| Advantage Plus AC and Heating Repair | 5.0★ (10) | In Simi Valley |
| Better Air Conditioning & Heating | 5.0★ (1) | In Simi Valley |
| Big Vali Inc A/C, Heating & Refrigeration | In Simi Valley | |
| Camarillo Plumbing Co | 4.6★ (201) | 13 mi |
| Centech LLC | 5.0★ (1) | In Simi Valley |
| Cosmos Emergency HVAC Repair | 5.0★ (1) | In Simi Valley |
| FreshBreeze Dryer Vent Brushing Expert | 5.0★ (1) | In Simi Valley |
| Global Green Solutions | 4.9★ (90) | 13 mi |
| Hvac Repair Goodbye Rodent | In Simi Valley | |
| Mark's Heating & AC Repair Simi Valley | In Simi Valley | |
| Most Valuable Plumber | 4.8★ (156) | 16 mi |
| Regular HVAC | 5.0★ (1) | In Simi Valley |
| Rooter Hero Plumbing & Air | 4.7★ (197) | 17 mi |
| SERVPRO of Moorpark/Fillmore/Santa Paula | 5.0★ (25) | In Simi Valley |
| Supreme Mechanical Heating & Air Conditioning | 5.0★ (60) | 12 mi |
| Suttles Plumbing | 4.2★ (21) | In Simi Valley |
| TOTO Air inc | 5.0★ (180) | 19 mi |
| U. S. Air Conditioning and Heating | In Simi Valley | |
| Venturi Thermal Services | In Simi Valley |
How much do HVAC contractors cost in Simi Valley?
National price ranges in USD, not adjusted for Simi Valley. 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 |
How to check an HVAC contractor's license in California
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).
- Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
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
When to hire an HVAC contractor in California
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
How we ranked Simi Valley HVAC contractors
We scored 747 Simi Valley 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 Simi Valley 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 |
HVAC contractors in Simi Valley: frequently asked questions
Who is the best HVAC contractor in Simi Valley?
By CR Score, the highest-ranked HVAC contractor in Simi Valley, CA is Dutton Plumbing, Cooling & Heating with a CR Score of 66/100. It has 4.8★ from 2,247 Google reviews. It is open 24/7. Rooter Hero Plumbing & Air (#2) and Conejo Services HVAC, Plumbing and Electrical (#3) follow. We ranked 747 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Simi Valley?
ContractorsRanked ranks 747 HVAC contractors serving Simi Valley, CA. 13 of them are based in Simi Valley; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Simi Valley are open 24/7?
317 ranked HVAC contractors in Simi Valley post 24/7 hours. The highest-ranked are Dutton Plumbing, Cooling & Heating (#1), Rooter Hero Plumbing & Air (#2) and Conejo Services HVAC, Plumbing and Electrical (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Simi Valley work on weekends?
585 of 747 ranked HVAC contractors post Saturday hours and 467 post Sunday hours. The highest-ranked open Saturdays are Dutton Plumbing, Cooling & Heating (#1), Rooter Hero Plumbing & Air (#2) and Conejo Services HVAC, Plumbing and Electrical (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an HVAC contractor's license in California?
In California, Contractors State License Board (CSLB) handles licensing and covers C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).
How much does ac replacement cost in Simi Valley?
AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Simi Valley. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Simi Valley HVAC contractors have?
The median Google rating among 747 rated HVAC contractors in Simi Valley is 4.9★, with a median of 21 reviews. AZ Air Conditioning and Heating has the most, 3,170 reviews, and ranks #8. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire an HVAC contractor in Simi Valley?
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
Update log for Simi Valley
- October 2026: CR Scores recalculated for 747 hvac contractors serving Simi Valley.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Simi Valley pages
HVAC contractors near Simi Valley
- HVAC contractors in Moorpark, CA548 ranked
- HVAC contractors in Oak Park, CA939 ranked
- HVAC contractors in Thousand Oaks, CA671 ranked
- HVAC contractors in Westlake Village, CA829 ranked
- HVAC contractors in Agoura, CA1042 ranked
- HVAC contractors in Agoura Hills, CA937 ranked
- HVAC contractors in West Hills, CA1204 ranked
- HVAC contractors in Chatsworth, CA1199 ranked
- HVAC contractors in Calabasas, CA1275 ranked
- HVAC contractors in Canoga Park, CA1260 ranked
Other trades in Simi Valley
- Roofers in Simi Valley1228 ranked
- Plumbers in Simi Valley620 ranked
- Electricians in Simi Valley441 ranked
- General contractors in Simi Valley921 ranked
- Painters in Simi Valley124 ranked
- Landscapers in Simi Valley118 ranked
- Handymen in Simi Valley74 ranked
- Kitchen remodelers in Simi Valley511 ranked
- Bathroom remodelers in Simi Valley470 ranked
- Flooring contractors in Simi Valley260 ranked
- Tile installers in Simi Valley51 ranked
- Drywall contractors in Simi Valley14 ranked
- Concrete contractors in Simi Valley215 ranked
- Fence contractors in Simi Valley193 ranked
- Deck builders in Simi Valley99 ranked
- Siding contractors in Simi Valley56 ranked
- Window installers in Simi Valley313 ranked
- Gutter installers in Simi Valley103 ranked
- Insulation contractors in Simi Valley105 ranked
- Solar installers in Simi Valley352 ranked
- Garage door repair companies in Simi Valley173 ranked
- Foundation repair companies in Simi Valley141 ranked
- Tree services in Simi Valley157 ranked
- Masonry contractors in Simi Valley129 ranked
- Water damage restoration companies in Simi Valley697 ranked
- Home builders in Simi Valley517 ranked
- Demolition contractors in Simi Valley67 ranked
- All contractors in Simi Valley