AirProHQ
Ontario, CA · Updated Oct 2026

54 HVAC contractors in Ontario — every one with a license we could verify.

AirProHQ lists 54 heating and cooling companies in Ontario, CA, every one matched to a license on the CSLB register. The 91761, 91762, 91764 ZIP codes hold 96% of them. These listings come from the license register rather than review sites, so most carry no public rating — a verified license with no reviews is normal here, not a warning sign.

Ontario at a glance
License boardCSLB · number on every ad
Verify a license on the CSLB lookup

How we check every listing: our full verification methodology.

54Contractors listed
54License-verified · 100%

54 license-verified shown first · distances from the center of the listed offices

Sorted: license status, then name

HVAC contractors in Ontario, CA

License verified

Effina

91761 · 1.6 miLicense 1150901
Public reviewsNone on file
CallProfile
License verified

Le Dao

91762 · 2.2 miLicense 864673
Public reviewsNone on file
CallProfile
License verified

Li Chun

91761 · 2.8 miLicense 1054025
Public reviewsNone on file
CallProfile
14 more in OntarioZIPLicenseContact
Ontario Refrigeration Commercial Air Conditioning Heating & Contr91762Verified315638CallProfile
Park Phillip91761Verified1102884CallProfile
Reliant Cooling And Power LLC91764Verified1156506CallProfile
Spec Construction Co Inc91762Verified419626CallProfile
Superheat Refrigeration91761Verified1147315CallProfile
Technicool Refrigeration91762Verified987769CallProfile
Veltel Infrastructure Services LLC91764Verified1049531CallProfile
West End Heating And Air91764Verified1110549CallProfile
Yoo Ho Soo91762Verified703553CallProfile
Air Control Specialties Inc91761Verified570881CallProfile
Custom Homes Construction91761Verified1045173CallProfile
Just Everything Heating & Air Inc91762Verified892799CallProfile
Norton General Contractors91764Verified909595CallProfile
Rafael's Appliances Air Conditioning And Heating SystemsVerified936041CallProfile
Where they're based

3 ZIP codes hold 96% of Ontario's listed offices

Counted from the office address on each record. A contractor based near you usually means a shorter response window on a hot afternoon.

  1. 019176125
  2. 029176216
  3. 039176411
A A Hvac IncA G Heating & AirAboubakare AnsaryAdaptive Controls ServicesAir Bee HvacAir Control Specialties IncAir Control Systems IncAirtong Heating & CoolingAll Pro Cooling Heating Plumbing & ElectricalAmj MechanicalBrito David SanchezCastillo Julio AntonioChino Valley RefrigerationClimate Controllers A Partnership TheCustom Homes ConstructionDiamond Air Services IncDs Hvac IncEffinaElite Precision Air SystemsErwin Advanced Air SystemsFoothill Heating & Air ConditioningGilmore Kyle Plumbing HVAC RGet It Repaired Heating And Air IncGood TemperatureHao JulanInter-City Energy Systems IncJang JasonJn Construction IncJust Everything Heating & Air IncJust Temperature IncKao Brian YawchingLe DaoLi ChunMagnison And Moen IncMarcos Air ConditioningMaster Chill Heating And AirMechanical ControlMyco ConstructionNick Air Conditioning IncNorthstar Phac IncOntario Refrigeration Commercial Air Conditioning Heating & ContrPark PhillipReliant Cooling And Power LLCSpec Construction Co IncSuperheat RefrigerationTechnicool RefrigerationVeltel Infrastructure Services LLCWest End Heating And AirYoo Ho Soo 917619176291764
52 of 54 listings have a geocoded office address. Dots are offices, not service areas.License verifiedNot verified24/7
Know the fair price

What HVAC work costs in Ontario

National 2026 ranges from our cost guides. Ask any contractor for a written, itemized quote and compare it against them.

JobTypical cost
Diagnostic / service call$75 – $200
Capacitor replacement$100 – $250
Refrigerant recharge$200 – $600
Compressor replacement$1,300 – $2,800
Central air conditioner$3,900 – $7,900
Full HVAC (furnace + AC)$5,000 – $12,500
Sources: AC repair cost guide · HVAC replacement cost guide
Ontario FAQ

Hiring an HVAC contractor in Ontario

Answers built from Ontario's own listing data.

01

How do I check an Ontario HVAC contractor's license?

Ask for the license number and search it on the CSLB lookup (official site). 54 of the 54 listings here already match an active license; each of those profiles links straight to the lookup.

02

Why do most Ontario listings show no reviews?

Our Ontario data comes from the CSLB license register, not from review sites, so many licensed one-truck operations have no public review profile. A verified license with no reviews is not a red flag — ask for two recent local references instead.

HVAC contractors near Ontario

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