Top 3 HVAC Contractors in Ontario

Compare the highest-rated hvac professionals in Ontario, California. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Ontario Air Experts

4.8
(215 reviews)
Verified

A full-service HVAC contractor specializing in high-efficiency system installations and complex repairs for both residential and commercial properties. Known for their thorough diagnostics and expertise with the latest inverter and variable-speed technology, crucial for Ontario's hot summers.

1542 E Philadelphia St, Ontario, CA 91761

Specialties & Features

24/7 Emergency Service
Energy Efficient System Installation
Smart Thermostat Integration
Commercial HVAC

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes
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#2

Diamond Climate Control

4.7
(183 reviews)
Verified

A family-owned and operated HVAC provider with a strong reputation for honesty and quality workmanship. They excel in furnace repair and replacement, a critical service during Ontario's cooler winter nights, and are certified to handle all major brands like Trane, Lennox, and Carrier.

829 N Mountain Ave, Ontario, CA 91762

Specialties & Features

Furnace Repair & Installation
Ductwork Design & Sealing
Preventive Maintenance Plans
Indoor Air Quality Solutions

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
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#3

ProTemp Heating & Air Conditioning

4.6
(142 reviews)
Verified

Specializes in quick-response emergency services and affordable maintenance tune-ups. They have built a loyal customer base by focusing on reliable repairs and straightforward system recommendations, making them a popular choice for both urgent AC breakdowns and seasonal preparation.

432 S Vineyard Ave, Ontario, CA 91764

Specialties & Features

24/7 Emergency Repairs
AC Maintenance & Tune-ups
HVAC System Financing
Water Heater Services

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
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Why These Are the Top HVAC Contractors in Ontario

The HVAC market in Ontario, CA, is driven by a hot desert climate with long, intense summers where temperatures frequently exceed 95°F and mild but sometimes chilly winters. This creates a high demand for robust air conditioning systems, making AC installation, maintenance, and emergency repair the core services. Energy efficiency is a major concern for homeowners due to high cooling costs, increasing demand for SEER 16+ systems and smart thermostats. The market is competitive with numerous providers, but reputable companies distinguish themselves with 24/7 emergency availability, NATE-certified technicians, and expertise in both high-efficiency cooling and effective heating solutions for the occasional cold snap.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Ontario regulations and climate