66/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 1,417 Google reviews, the most in Merced.
- 4.9★ from 1,417 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 701 Enterprise Ct, Atwater, CA 95301
Best HVAC Contractors in Merced, CA (2026)
53 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Merced: ARMS Air Conditioning And Heating, CR Score 66/100; 4.9★ from 1,417 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Cosmic Comfort Electrical & HVAC | Merced, posts 24/7 hours; ranked #2 of 53.
- 6
Most-reviewed: Wally Falke's Heating & Air Conditioning, 1,295 Google reviews at 4.9★, the most of 53 ranked after ARMS Air Conditioning And Heating; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
53 Merced HVAC contractors are ranked here by CR Score, from ten published factors. 12 are open 24/7, 34 open Saturdays and 20 open Sundays, based on posted hours. The median Google rating is 4.9★ across 53 rated businesses.
Top 10 HVAC contractors in Merced at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | ARMS Air Conditioning And Heating | 66 | 4.9★ (1,417) | Atwater, 7 mi away | 24/7 | Overall |
| 2 | Cosmic Comfort Electrical & HVAC | Merced | 65 | 4.9★ (719) | Atwater, 7 mi away | 24/7 | Emergencies |
| 3 | N & C Heating and Air LLC | 65 | 4.9★ (185) | Merced | 24/7 | — |
| 4 | Perez Repair Heating & Air | 63 | 4.8★ (103) | Merced | 24/7 | — |
| 5 | ZACS AIR SYSTEMS | 63 | 4.9★ (59) | Merced | 24/7 | — |
| 6 | Wally Falke's Heating & Air Conditioning | 62 | 4.9★ (1,295) | Turlock, 24 mi away | 24/7 | Most reviews |
| 7 | Holl Sheet Metal | 60 | 4.9★ (280) | Merced | — | — |
| 8 | Evolution Heating & Cooling | 59 | 4.9★ (312) | Turlock, 24 mi away | 24/7 | — |
| 9 | The Air Doctor - Heating and Air | 59 | 5.0★ (35) | Atwater, 7 mi away | Sat · Sun · Evenings | — |
| 10 | Nova Heating & Air Conditioning | 59 | 5.0★ (37) | Merced | Sat | — |
The 53 best HVAC contractors in Merced, 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 Atwater, 7 mi away
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 719 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 719 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3564 Atwater Blvd, Atwater, CA 95301
Based in Merced
65/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 185 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 185 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3811 N St #59, Merced, CA 95348
Based in Merced
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 103 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 103 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Merced
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 59 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 59 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6 E 27th St, Merced, CA 95340
Based in Turlock, 24 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 1,295 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,295 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1575 Lander Ave, Turlock, CA 95380
Based in Merced
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 280 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 280 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 3811 State Hwy 59, Merced, CA 95348
Based in Turlock, 24 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 312 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 312 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1220 S Walnut Rd, Turlock, CA 95380
Based in Atwater, 7 mi away
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 35 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Merced
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Air conditioning contractor”.
- 5.0★ from 37 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 2968 Bedford Dr, Merced, CA 95340
Based in Merced
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 35 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 20 W Olive Ave, Merced, CA 95348
Based in Merced
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 104 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 104 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 196 Riggs Ave, Merced, CA 95341
#13 Calor Air HVAC
Based in Merced
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Fri 7 AM–10 PM · Sat–Sun 7 AM–5 PM
Based in Merced
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.6★ from 112 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 112 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 2200 Cooper Ave, Merced, CA 95344
Based in Turlock, 24 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 79 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 79 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 200 N Broadway Ste D, Turlock, CA 95380
Based in Ceres, 19 mi away
57/100CR ScoreRanked #16 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
#17 Ace Air Inc
Based in Merced
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 35 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 2330 Canal St Suite A, Merced, CA 95340
#18 Air Tactics
Based in Atwater, 10 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 17 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 17 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Merced
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 3 Google reviews
- Hours
- Mon–Fri 7 AM–8 PM · Sat–Sun 9 AM–7 PM
- Address
- 900 W 14th St, Merced, CA 95340
Based in Atwater, 7 mi away
56/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.1★ from 18 Google reviews, listed on Google as “HVAC contractor”.
- 4.1★ from 18 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–3 PM · Sun 8 AM–5 PM
Based in Turlock, 24 mi away
56/100CR ScoreRanked #21 because of its Google rating and review volume: 4.8★ from 396 Google reviews.
- 4.8★ from 396 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 821 W F St, Turlock, CA 95380
Based in Madera, 17 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 395 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 395 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
#23 The Air Doctor
Based in Hanford, 18 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 65 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
#24 Comfort Zone
Based in Atwater, 9 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
#25 Airmergency Inc
Based in Fresno, 18 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Air conditioning contractor”.
- 5.0★ from 22 Google reviews
- Hours
- Mon–Fri 8:30 AM–5 PM · Sat–Sun 8 AM–5 PM
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 53 ranked HVAC contractors here; the rest are on their profiles.
Also serving Merced
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 |
|---|---|---|
| A Bonner Electric | 3.0★ (8) | In Merced |
| Air Accommodations | 5.0★ (1) | 23 mi |
| Air Boss Air-conditioning heating | 5.0★ (1) | In Merced |
| Air Eaze Heating & Air Conditioning | 4.5★ (2) | In Merced |
| ALL- Care heating & Air | In Merced | |
| Best Results Heating And Air | In Merced | |
| California HVAC Mechanical LLC | 5.0★ (1) | 23 mi |
| Central Valley Airconditioning | 6 mi | |
| Chowchilla Barn Burner | 4.6★ (25) | 18 mi |
| Commercial Filter Services Inc | 5.0★ (1) | 24 mi |
| Discount Plumbing Merced | 1.0★ (1) | In Merced |
| Golden Valley Heating & Air | 1 mi | |
| Grissom Construction Inc. | In Merced | |
| JV Heating & Air | 5.0★ (1) | In Merced |
| Let There Be Light Electrical Solutions Inc | 5.0★ (27) | In Merced |
| Martinez Heating and Air Conditioning Inc | In Merced | |
| Roo's Heating And Air Conditioning | In Merced | |
| Spain-Air Inc | 5.0★ (1) | 25 mi |
| T & T Solutions | 5.0★ (1) | 7 mi |
| Workman Duct Solutions | 5.0★ (1) | 6 mi |
How much do HVAC contractors cost in Merced?
National price ranges in USD, not adjusted for Merced. 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 Merced HVAC contractors
We scored 53 Merced 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 Merced 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 Merced: frequently asked questions
Who is the best HVAC contractor in Merced?
By CR Score, the highest-ranked HVAC contractor in Merced, CA is ARMS Air Conditioning And Heating with a CR Score of 66/100. It has 4.9★ from 1,417 Google reviews. It is open 24/7. Cosmic Comfort Electrical & HVAC | Merced (#2) and N & C Heating and Air LLC (#3) follow. We ranked 53 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Merced?
ContractorsRanked ranks 53 HVAC contractors serving Merced, CA. 12 of them are based in Merced; 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 Merced are open 24/7?
12 ranked HVAC contractors in Merced post 24/7 hours. The highest-ranked are ARMS Air Conditioning And Heating (#1), Cosmic Comfort Electrical & HVAC | Merced (#2) and N & C Heating and Air LLC (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Merced work on weekends?
34 of 53 ranked HVAC contractors post Saturday hours and 20 post Sunday hours. The highest-ranked open Saturdays are ARMS Air Conditioning And Heating (#1), Cosmic Comfort Electrical & HVAC | Merced (#2) and N & C Heating and Air LLC (#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 Merced?
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 Merced. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Merced HVAC contractors have?
The median Google rating among 53 rated HVAC contractors in Merced is 4.9★, with a median of 28 reviews. ARMS Air Conditioning And Heating has the most, 1,417 reviews, and ranks #1. 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 Merced?
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 Merced
- October 2026: CR Scores recalculated for 53 hvac contractors serving Merced.
- October 2026: 3 duplicate listings merged.
More HVAC contractors and Merced pages
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