24/7 Emergency · Ontario
Emergency HVAC Companies in Ontario, CA — Available 24/7
When you can't wait, these hvac companies in Ontario offer emergency response. Call now — most respond within the hour.
As of July 2026, RatingsNearMe ranks 13 hvac companies in Ontario, CA by the RNM Score — a 0–100 rating built from Google ratings, review volume, sentiment, and profile completeness. The top-ranked is AC Plus Heating & Air with a 5.0-star rating from 2,623 Google reviews and an RNM Score of 100/100. Also in the top tier: AAVCO Plumbing, Heating & Air Conditioning - Fontana and RKM Heating and Air Conditioning. The average rating across all listed hvac companies in Ontario is 4.9 stars from 628 reviews per business on average.
HVAC service in Ontario: $75–$150/hr for repairs; full system replacement $4,000–$12,000 depending on size and efficiency.
Rankings updated July 4, 2026 · RNM Score = ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Local Market Snapshot
13
Businesses listed
4.9★
Avg rating
628
Avg reviews
Jul 4, 2026
Last updated
Top Rated HVAC Companies
A perfect 5.0-star rating from over 2,600 reviews for HVAC in Ontario.
14615 Palmdale Rd, Victorville, CA 92392, USAOntario's top-rated HVAC company, with 4.9 stars from over 1,000 reviews.
7655 Sierra Ave., Fontana, CA 92336, USATrusted by thousands, this HVAC company holds a stellar 4.9-star rating from over 1,100 reviews.
6236 River Crest Dr a, Riverside, CA 92507, USAHVAC Companies Rankings in Ontario, CA
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | AC Plus Heating & Air14615 Palmdale Rd, Victorville, CA 92392, USA | 5.0★ | 2,623 |
| #2 | AAVCO Plumbing, Heating & Air Conditioning - Fontana7655 Sierra Ave., Fontana, CA 92336, USA | 4.9★ | 1,089 |
| #3 | RKM Heating and Air Conditioning6236 River Crest Dr a, Riverside, CA 92507, USA | 4.9★ | 1,180 |
| #4 | Macawsome Heating & Cooling4375 E Lowell St Suite N, Ontario, CA 91761, USA | 4.7★ | 131 |
| #5 | Northstar Plumbing, Heating and Air Conditioning1351 S Grove Ave #110, Ontario, CA 91761, USA | 4.7★ | 331 |
| #6 | Friends & Family HVAC1611 Pomona Rd Suite 240, Corona, CA 92878, USA | 4.9★ | 1,263 |
| #7 | AC Plus Heating & Cooling8351 Rochester Ave ste 103b, Rancho Cucamonga, CA 91730, USA | 5.0★ | 200 |
| #8 | Diamond Air Services1630 E Francis St ste c, Ontario, CA 91761, USA | 5.0★ | 419 |
| #9 | Superior Mechanical Heating & Air Inc.1131 E Central Ave, San Bernardino, CA 92408, USA | 4.9★ | 236 |
| #10 | DS HVAC LLC1138 W Ralston St c, Ontario, CA 91762, USA | 5.0★ | 4 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated July 2026
All HVAC Companies in Ontario
Trusted by hundreds of local customers, this HVAC business holds a strong 4.7-star rating.
4375 E Lowell St Suite N, Ontario, CA 91761, USA
Trusted by hundreds of local customers with a strong 4.7-star average rating.
1351 S Grove Ave #110, Ontario, CA 91761, USA
Trusted by 1,263 local customers with a perfect 4.9-star rating.
1611 Pomona Rd Suite 240, Corona, CA 92878, USA
Trusted by hundreds of local customers, maintaining a perfect 5.0-star rating.
8351 Rochester Ave ste 103b, Rancho Cucamonga, CA 91730, USA
Hundreds of Google reviews average a perfect 5.0-star rating for this Ontario HVAC business.
1630 E Francis St ste c, Ontario, CA 91761, USA
Trusted by hundreds of customers, this HVAC company holds a stellar 4.9-star average rating.
1131 E Central Ave, San Bernardino, CA 92408, USA
Rated 5.0 stars from 4 reviews, this Ontario HVAC provider earns exceptional customer praise.
1138 W Ralston St c, Ontario, CA 91762, USA
Earned a perfect 5.0-star rating from over 120 Google reviews.
615 N Benson Ave, Upland, CA 91786, USA
Exceptional 5.0-star rating based on 18 Google reviews from local customers.
11193 Central Ave, Ontario, CA 91762, USA
Trusted locally with a 4.7-star average from over 500 reviews.
1428 S Grove Ave Unit B, Ontario, CA 91761, USA
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HVAC Companies in Ontario, CA — Compared
| # | Business | RNM Score | Rating | Reviews |
|---|---|---|---|---|
| 1 | AC Plus Heating & Air | 100/100 | 5.0 ★ | 2,623 |
| 2 | AAVCO Plumbing, Heating & Air Conditioning - Fontana | 98/100 | 4.9 ★ | 1,089 |
| 3 | RKM Heating and Air Conditioning | 98/100 | 4.9 ★ | 1,180 |
| 4 | Macawsome Heating & Cooling | 91/100 | 4.7 ★ | 131 |
| 5 | Northstar Plumbing, Heating and Air Conditioning | 95/100 | 4.7 ★ | 331 |
| 6 | Friends & Family HVAC | 87/100 | 4.9 ★ | 1,263 |
| 7 | AC Plus Heating & Cooling | 87/100 | 5.0 ★ | 200 |
| 8 | Diamond Air Services | 100/100 | 5.0 ★ | 419 |
| 9 | Superior Mechanical Heating & Air Inc. | 98/100 | 4.9 ★ | 236 |
| 10 | DS HVAC LLC | 67/100 | 5.0 ★ | 4 |
Ranked by RatingsNearMe Score · ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · July 2026
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Frequently Asked Questions — HVAC Companies in Ontario
How do I find the best hvac companies in Ontario?
Look for businesses with 4.5+ stars, 50+ verified reviews, proper licensing and insurance, and transparent pricing. The top-ranked hvac companies in Ontario on this page are scored by our algorithm that weighs ratings, review count, and profile completeness.
Are hvac companies in Ontario licensed and insured?
Licensing requirements vary by trade and state. For most home service contractors, CA requires both a state license and liability insurance. Always ask any contractor for proof of current insurance and a copy of their license number before work begins — you can verify most licenses on your state licensing board's website.
How much do hvac companies charge in Ontario, CA?
Prices vary by scope, materials, and contractor experience. Use the free quote form on this page to request estimates from multiple local pros simultaneously. Getting 3+ quotes is the single most effective way to avoid overpaying.
What should I look for when hiring a hvac companies in Ontario?
Verify licensing and insurance, read recent reviews on multiple platforms, ask for a written estimate before work starts, confirm they pull permits when required, and check references from recent local projects. Featured businesses on this page are ranked by verified ratings and review quality.
How are the hvac companies on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
HVAC Companies in Nearby Cities
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How Rankings Work on This Page
Every hvac companies on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: July 4, 2026.
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