20 HVAC Repair Contractors in Ontario, CA
Top-Rated HVAC Repair Contractors in Ontario
All Pro Cooling, Heating, Plumbing & Electrical
“Technicians are named in every positive review, with Oscar, Art, Jovaughn, and Cord appearing repeatedly for their explanatory approach and transparent…”
Diamond Air Services
“All 419 reviews carry a 5-star rating, and named technicians recur frequently enough to suggest consistent team assignment rather than rotating crews. Three of…”
All HVAC Repair Contractors (20 total)
Northstar Plumbing, Heating and Air Conditioning
“Four of four named reviews award 4 or 5 stars, with three specifically mentioning punctual arrival and quoted…”
Macawsome Heating & Cooling
“All six accessible reviews award five stars, with three specifically praising same-day or next-day…”
Plumbers Hub LLC
“All 6 sampled reviews award 5 stars, with consistent praise for same-day response times, fair pricing, and…”
Tario Air Conditioning & Heating
“All 19 reviewers award 5 stars, with 7 specifically mentioning same-day or emergency response times. Four…”
Ontario Refrigeration Services Inc
“Four of eight displayed reviews award five stars, with customers praising diagnostic skill, knowledgeable…”
Ontario HVAC Solutions
“All eight reviewers awarded five stars, with mentions of same-day service, thermostat expertise, and furnace…”
Allied Mechanical
“Three of four reviewers awarded 5-star ratings, while one review cited workplace safety concerns. Positive…”
EzFix HVAC Repair Ontario
“Both reviews award five stars, with customers specifically praising on-time arrival and efficient problem…”
Air Temp Air Conditioning and Heating
“Five-star reviews praise fair pricing and same-day service without upselling, while one-star reviews describe…”
DS HVAC LLC
“All five reviews award five stars, with clients emphasizing thorough diagnostics, careful problem…”
Air Control Specialties Inc.
“The 4 reviews split between strong satisfaction and significant frustration. One 5-star review specifically…”
Champ's HVAC Inc
“Both reviewers awarded 5 stars, describing quick turnaround and efficient repairs. One customer noted…”
GJR LLC
“One client awarded GJR LLC a five-star rating, describing the service as excellent and professional. This…”
HVAC Repair Costs in Ontario
Typical heating and cooling repair costs in Ontario, by component.
| Service | Low | Average | High |
|---|---|---|---|
Diagnostic / service call | $77 | $124 | $206 |
Thermostat replacement | $155 | $283 | $515 |
Blower motor replacement | $412 | $670 | $1,133 |
Heat exchanger replacement | $1,545 | $2,266 | $3,605 |
Ignitor replacement (gas furnace) | $155 | $258 | $412 |
Control board replacement | $309 | $567 | $927 |
Full system repair (major) Multi-component failure | $515 | $1,236 | $3,090 |
Prices reflect hot desert metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
HVAC Repair in Ontario, CA: What to Expect
Ontario sits in California's Inland Empire, where summer temperatures exceed 97 degrees with over twenty days surpassing 100. The dry desert air, around 28% humidity, allows cooling systems to operate efficiently while demanding high capacity performance. Mild winters with lows near 37 degrees require reliable heating from November through February. Five contractors serve the area with an average rating of 4.8 across nearly 9,500 customer reviews. HVAC Repair in Ontario runs highly competitive.
When systems fail in this climate, diagnostic service calls range from $77 to $206, thermostat replacements cost $155 to $515, and blower motor replacements span $412 to $1133. California requires all HVAC contractors to hold a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license from the Contractors State License Board, which means clients are working with professionals who have met statewide training and testing standards.
Customer reviews reveal distinct strengths among top performers. All Pro Cooling receives repeated mention of technicians Oscar, Art, Jovaughn, and Cord for their explanatory approach and transparent pricing. Diamond Air Services maintains a perfect 5.0 rating across all 419 reviews, with customers frequently citing the same technicians assigned to their jobs rather than rotating crews. Nexgen HVAC & Plumbing draws praise for diagnostic thoroughness, with Carlos Jimenez specifically noting technician Ryan used multimeter readings and component mapping to verify system condition before recommending repairs.
Frequently Asked Questions
Other HVAC Services in Ontario, CA
All HVAC Contractors in Ontario, CA
Complete directory of 44 contractors — browse alphabetically
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All HVAC Contractors in Ontario, CA
Complete directory of 44 contractors — browse alphabetically