Local HVAC directory

HVAC Contractors in Ontario, CA

10 HVAC professionals listed. Compare services, websites, service areas, and direct contact options.

10contractors listed

9websites available

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0 claimed listings on this page

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10 results

All Air Masters, Inc.

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 399-3222
Listed in: Listed in: Ontario, CA

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Central Air Services Inc.

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 980-1336
Listed in: Listed in: Ontario, CA

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Diamond Air Services

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 713-6644
Business location: Business location: 1630 E Francis St Ste cOpen

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DS HVAC LLC

Ontario, CA

Unclaimed listing Checked Aug 2026 Website unavailable

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 206-0674
Business location: Business location: 1138 W Ralston St COpen

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Macawsome Heating & Cooling

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 333-4004
Business location: Business location: 4375 E Lowell St Suite NOpen

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Northstar Plumbing, Heating and Air Conditioning

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 593-3353
Business location: Business location: 1351 S Grove Ave #110Open

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Reliant HVAC Service LLC

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (626) 679-1882
Business location: Business location: 8608 Utica Ave Ste 220 RSOpen

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Sean Patrick HVAC

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: Phone not listed
Listed in: Listed in: Ontario, CA

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WE DO A/C & Heat

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 270-8446
Listed in: Listed in: Ontario, CA

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ZAFI Air Conditioning and Consulting

Ontario, CA

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 510-2256
Listed in: Listed in: Ontario, CA

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Hiring and service guidance

Common HVAC needs in Ontario

Ontario homeowners and property managers commonly compare contractors for furnace repair, AC repair, seasonal maintenance, emergency no-heat calls, ductwork, and indoor air quality work. Use the cards below to shortlist local and nearby HVAC companies, then confirm service area, availability, license details, and current pricing directly with each business.

What to check before hiring in Ontario

Contact details: Use phone numbers and websites as a starting point, then confirm hours, services, and licensing directly with the contractor.
Owner updates: Claimed listings may include validated owner-source details subject to source precedence.
Services: Confirm the contractor handles your specific heating, cooling, ductwork, or indoor air quality need.
Emergency availability: Ask whether after-hours or weekend heating and cooling help is available.
Get multiple estimates: Contact at least 2-3 contractors before choosing.

Confirm the contractor's service areaBusiness addresses do not always match the cities a contractor serves. Confirm coverage directly before scheduling.

Own or manage an HVAC company? Claim your listing for free to keep phone, website, service-area, and service details current. Claim or update listing

HVAC Contractors in Ontario, CA

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