Residential, Commercial HVAC Services Toronto, GTA, York Region

HVAC Solutions for Residential

Begin your journey toward a more comfortable and efficient space today.

We understand that the HVAC world can be overwhelming due to its technicalities, and that's where we step in as your reliable advisors. Our residential and commercial services help you make HVAC decisions that precisely match your needs and budget. Reach out to us today to schedule a consultation!

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Long-Lasting, Trouble-Free Systems

Our HVAC systems are designed for long-lasting performance and trouble-free operation. We provide cutting-edge technology and quality standards that deliver year-round efficiency. Your comfort is a valuable investment, and we are here to safeguard it.

Reliable Owner-Operated Services

Our commitment to reliability is seamlessly integrated with our owner-operated approach. We promptly address your HVAC needs and deliver custom solutions based on the unique nature of every home.

Personalized Attention to Your Needs

Our owner takes a hands-on approach, offering personal attention to your HVAC requirements. We believe in creating a relationship with our clients, where your needs are heard, understood, and met with the utmost care and expertise.

Stress-Free Preventative Maintenance

Bid farewell to HVAC concerns with our effortless preventative maintenance services. Our proactive methodology ensures that we handle potential issues before they escalate. We provide you with the confidence that your HVAC system will consistently excel.


At DeMarco Mechanical Services Inc., we offer a range of programs designed to maintain your Heating, Air Conditioning, Gas, and Air Filtration (HVAC) units on a regular basis. Our team of HVAC contractors is dedicated to providing high-quality service while prioritizing the health and well-being of our customers and the longevity of their installed products. We serve both residential and commercial properties.

Regular preventative maintenance is crucial to ensure the safe and efficient operation of any heating and cooling system. As units age, their components can experience wear and tear, increasing the likelihood of a breakdown. An annual inspection conducted by licensed HVAC contractors can make a significant difference. It ensures your year-round comfort and definitely won't find yourself waiting for a furnace part in the midst of -25°C weather.

Heating Services

Experience cozy warmth in the coldest months with our expert heating services. We ensure your home or business stays comfortably heated throughout the winter.

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Cooling Services

Stay cool and refreshed with our cooling services when the temperatures soar. Whether it's AC installation, maintenance, or repairs, we've got your comfort covered.

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Indoor Air Quality (IAQ)

Breathe easy with our indoor air quality solutions. We offer various services to enhance the air you breathe and ensure a more comfortable indoor environment.

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Gas Line Services

Safety and reliability are paramount when it comes to gas lines. Our gas line services provide expert installation, maintenance, and repairs to keep your gas appliances running smoothly.

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Air Conditioner Installation

At DeMarco Mechanical, we understand the critical importance of a reliable air conditioner. Our expertise in AC installation in Toronto spans a broad range of systems including state-of-the-art furnaces, water heaters, boilers, heat pumps, and bespoke air conditioning units.

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Air Conditioner Repair

Our comprehensive HVAC service portfolio includes specialized AC repair in Toronto, ensuring that whether you own a residential unit or a sprawling commercial system, your air conditioning needs are met with the utmost professionalism and efficiency.

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DeMarco Mechanical offers residential and commercial HVAC installation, repair, replacement, maintenance services, and more across the GTA and York Region: Downtown Toronto, North York, Etobicoke, Scarborough, Thornhill, Markham, Richmond Hill, Vaughan, Concord, Aurora, Woodbridge, Maple, King City, Newmarket, Stouffville, Pickering, Ajax, Whitby, Oshawa, and the surrounding areas.