GTA Climate Authority

Reliable HVAC
Replacement.

Professional comfort solutions for homes and businesses across the Greater Toronto Area. We specialize in high-efficiency installations that stand the test of time.

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5.0

GTA

Trusted by 500+ Clients

100%

Quality Guarantee

Mastering the
Art of Comfort.

Union Mechanical Inc. specializes in high-quality HVAC replacement and installation services. We focus on workmanship, efficiency, and customer satisfaction, delivering dependable comfort solutions for residential and commercial clients across the GTA.

Precision

Every installation is calibrated for maximum efficiency.

Integrity

Honest recommendations based on your specific needs.

Core Capabilities

Premium HVAC Services

From residential furnace replacements to complex commercial rooftop units, our team delivers excellence.

Cooling

AC & Heat Pumps

High-efficiency mini-split systems and central air units for optimal summer comfort.

Heating

Furnace Replacement

Reliable heating solutions designed to withstand the coldest Ontario winters.

Water

Water Solutions

Expert installation of tankless and conventional high-efficiency water heaters.

Commercial

Rooftop Upgrades

Specialized commercial HVAC upgrades and precision roof vent installations.

Modernization

System Overhauls

We transform aging HVAC systems into high-performance, energy-efficient assets for your property.

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The Union
Standard of Excellence

Expert Craftsmanship

Licensed technicians with years of field experience in complex GTA installations.

Honest Recommendations

We don't upsell. We recommend systems that fit your space and your budget.

GTA Coverage

Prompt service across Markham, Richmond Hill, Toronto, and surrounding areas.

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Office Address

#03 - 175 Riviera Drive, Markham, ON L3R 5J6

Direct Line

(647) 835-8216

Service Hours

Mon - Fri: 9:00 AM - 6:00 PM
Saturday: 9:00 AM - 6:00 PM
Sunday: 9:00 AM - 6:00 PM

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Reliable HVAC Replacement.

Mastering the Art of Comfort.