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HVAC Contractors in Diamond Bar, CA

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

10contractors listed

10websites available

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10 results

ABR Air Conditioning, Heating, and Refrigeration

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 343-8847
Listed in: Listed in: Diamond Bar, CA

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AC Heat Diamond Bar

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (840) 239-6590
Listed in: Listed in: Diamond Bar, CA

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Air CareSaver - Air Conditioning and Heating

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (626) 425-4711
Listed in: Listed in: Diamond Bar, CA

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Aurum Construction

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (626) 225-5294
Listed in: Listed in: Diamond Bar, CA

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Budget Air Conditioning & Heating, Inc.

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 860-9537
Listed in: Listed in: Diamond Bar, CA

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Evergreen Air Conditioning & HAVC Professionals Diamond Bar

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 413-0245
Listed in: Listed in: Diamond Bar, CA

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Fresh Start Heating & AC Repair Service Diamond Bar

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 551-2090
Listed in: Listed in: Diamond Bar, CA

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McMaster Mechanical

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (714) 497-0225
Listed in: Listed in: Diamond Bar, CA

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Mike's Heating & Air Conditioning

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 396-4489
Listed in: Listed in: Diamond Bar, CA

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Pomona Valley Plumbing Heating & Air Conditioning

Diamond Bar, CA

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

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (909) 326-6101
Listed in: Listed in: Diamond Bar, CA

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Hiring and service guidance

Common HVAC needs in Diamond Bar

Diamond Bar 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 Diamond Bar

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