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HVAC contractors in Thornhill, Ontario

Planning an HVAC project doesn’t have to be complicated. Post the details of your heating or cooling needs on HomeStars, and we’ll match you with HVAC contractors and companies in Thornhill, Ontario. Explore their previous projects, browse real reviews, compare quotes, and hire the pro who’s right for your home.

Some of our top rated hvac contractors in Thornhill, Ontario

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  • HVAC contractor in Thornhill, Ontario

    Welcome! We are a well-established Plumbing & Drain company proudly serving our community since 2016. Built on a foundation of quality, reliability, and hard work, we’ve grown into a trusted name in the industry. While plumbing and drain services remain our core, we’ve expanded our expertise to offer a full range of contracting solutions, including: • Flooring installation • Demolition services • Landscaping • Excavation work Whether it’s a small repair or a large-scale project, we bring the same level of professionalism, attention to detail, and commitment to every job. Our team is equipped, experienced, and ready to help you build, renovate, or restore — the right way. Let us know how we can help with your next project!

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  • HVAC contractor in Thornhill, Ontario

    Transforming your most private space into a sanctuary of comfort and style. With 20 years of specialised experience in bathroom remodelling, Bescomfortzone bridges the gap between functional necessity and high-end design".

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  • HVAC contractor in Thornhill, Ontario

    At Top Comfort, we are dedicated to keeping your home comfortable all year round. As a licensed and insured residential HVAC company, we specialize in the installation, repair, and maintenance of furnaces, air conditioners, heat pumps, water heaters, gaslines and ductless systems.

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  • HVAC contractor in Thornhill, Ontario

    Laminar specializes in custom tile work and high-end bathroom renovations across the GTA. Second-generation trade with 20+ years of experience — we focus on precision, clean finishes, and treating your home with respect. From full bathroom remodels to custom shower builds and large-format slab installations, we take on projects where the details matter. Fully insured and WSIB compliant. Reach out to arrange a site visit and quote. Andre Instagram: @laminar_tile

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  • HVAC contractor in Thornhill, Ontario

    We do all type of renovations we provide best quality

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  • HVAC contractor in Thornhill, Ontario

    parwen constructers LTD can help you with your install or replace water supply and drainage, unclog drain and sewage pipes, install or repair faucets, repair toilet or toilet flush, install or repair bathroom fixtures, stop leakage, build or renovate well, install or replace water treatment station, install or replace septic tank or grease trap, clean or maintain septic tank or grease trap, install, replace or repair sewer main, install or replace drainage system, install or repair water heaters & install or replace garbage disposal request in Mississauga and its surrounding cities. They’re at your disposal to listen and assist you in all your projects. Get in touch with parwen constructers LTD now to discuss your needs and arrange a quote.

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  • HVAC contractor in Thornhill, Ontario

    ThermoPeak Heating and Cooling is the Greater Toronto Area’s (GTA) premier choice for high-efficiency climate control and precision gas piping. Unlike sales-driven franchises that rely on subcontractors, we operate on a strict Owner-Operator model. Led by licensed G2 Gas Technician, you deal directly with the expert. This ensures transparent pricing, accountability, and elite craftsmanship with zero middleman markups. ​As a TSSA registered contractor (FS-R-53856), safety is our absolute baseline. Every project strictly follows the Ontario CSA B149.1 gas code. We use first-principles troubleshooting to find the true root cause of mechanical failures, repairing what can be saved and replacing only what is necessary to save you money. ​Our Core Services: ​Furnaces: High-efficiency installation, emergency repair, and proper BTU sizing. ​AC & Heat Pumps: Central cooling and dual-fuel hybrid systems. ​Water Heaters: Tankless, hydronic, and conventional retrofits. ​Gas Piping: Custom CSST & black iron drops for stoves, BBQs, and heaters. ​Ductwork: Custom sheet metal fabrication for optimal airflow. ​We provide guaranteed 24/7 Same-Day Emergency Service across the GTA.

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  • HVAC contractor in Thornhill, Ontario

    Hello, my name is Cody. I’m here to take care of any heating, ventilation, air conditioning, and refrigeration (HVAC/R) needs you may have. I have been in the commercial and residential heating and cooling industry for over 8 years working for some of the largest companies in the Durham and GTA region. I am venturing out on my own to offer competitive rates and honest work. I will not do band aid fixes or cut corners to put more money in my pocket. Your comfort and safety is my priority. I am always looking to advance my reputation. Giving quality advice for your equipment. Service, maintenance, installation, and new construction. Have a great day!

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  • HVAC contractor in Thornhill, Ontario

    Father and son team providing electrical and lighting solutions

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    • Best of Awards 2026

    Your hometown heroes for reliable 24 hour plumbing and drain services! At Red Leaf Plumbing and Drain, we pride ourselves on treating every job as if it's our own. Led by a local expert, our team is committed to delivering top-notch plumbing and drain solutions with a touch of family hospitality. Give us a call - 905-301-6788

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  • HVAC contractor in Thornhill, Ontario

    Founded in 2004, Dial 4 Duct specializes in cleaning and maintenance of ducts and ventilation system across eastern Ontario. Active in the residential, commercial and institutional sector, our team consist of professionals that operate in the field day to day. We offer a vary of products and services and emphasize on customer service.

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  • HVAC contractor in Thornhill, Ontario

    At Hydrotech Development, we specialize in delivering reliable, high-quality HVAC solutions for residential and commercial clients. With years of hands-on experience in heating, ventilation, and air conditioning systems, we are committed to providing efficient, cost-effective services tailored to your needs. We offer a full range of HVAC services, including installation, maintenance, and repair of furnaces, boilers, water heaters, heat pumps, air conditioners, fireplaces, and ventilation equipment. Whether it’s a new system installation or renovation of an existing, we ensure every job is completed with precision and attention to detail. Customer satisfaction is at the core of our business. We take pride in honest communication, transparent pricing, and dependable service you can trust. We are proud to offer very budget-friendly pricing without compromising on quality, making professional HVAC services accessible and affordable to more homeowners and businesses. At Hydrotech Development, we stand behind our work and strive to build long-term relationships through professionalism, quality workmanship, and exceptional service.

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  • HVAC contractor in Thornhill, Ontario

    Air Conditioning Installation Reliable Eco Home provides professional air conditioning installation services designed to keep your home comfortable and energy-efficient throughout the year. Our experienced technicians assess your home’s cooling needs and recommend the right system for optimal performance, comfort, and energy savings. Air Conditioning Repair & Maintenance We offer prompt repair and preventative maintenance services to ensure your AC system operates efficiently and reliably. Regular maintenance helps extend equipment life, improve performance, and reduce energy costs. Heating System Services From furnace installation to repairs and seasonal tune-ups, we help homeowners maintain a comfortable indoor environment during colder months with dependable heating solutions. Indoor Air Quality Solutions Improve the air you breathe with our indoor air quality services, including air purifiers, filtration systems, humidifiers, and ventilation solutions that promote a healthier home environment. Energy-Efficient Home Upgrades Our team specializes in eco-friendly upgrades that help reduce energy consumption, lower utility bills, and enhance overall home comfort while

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  • HVAC contractor in Thornhill, Ontario

    Currently not taking Jobs.

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  • HVAC contractor in Thornhill, Ontario

    At Maple Leaf Home Solutions, we may be a newer company—just 1 year in business—but our team brings over 15 years of hands-on experience in the HVAC industry. We’ve worked on a wide range of residential and commercial projects, from simple home furnace repairs to full heating and cooling system installations in large buildings. We proudly serve Mississauga and surrounding areas, offering reliable and efficient HVAC solutions tailored to your needs. Our expertise includes heating and cooling system installation, maintenance, repairs, ductwork, and energy-efficient upgrades. What sets us apart is our commitment to quality, honesty, and customer satisfaction. We treat every home like it’s our own, and we never cut corners. With deep knowledge of HVAC systems, industry certifications, and a true passion for the trade, we make sure the job is done right the first time. Choose us for your next HVAC project and experience friendly service, expert advice, and dependable results. We’re not just here to fix a problem—we’re here to build trust and keep your home comfortable year-round.

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4.8

Top rated HVAC contractors

Our HVAC contractors in Thornhill, Ontario, are rated 4.8 out of 5 based on 440 reviews from homeowners like you.

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What services are offered by HVAC contractors and companies in Thornhill, Ontario?

HVAC contractors and companies in Thornhill, Ontario provide a range of services to keep your indoor environment comfortable year-round.

Popular HVAC services in Thornhill, Ontario include:

  • Fitting air cleaners and humidifiers to improve indoor air quality

  • Setting up a solar water heater to provide energy-efficient, sustainable hot water for your home or business

  • Repairing or replacing water heaters to ensure reliable hot water supply

  • Installing or servicing furnaces and heat pumps to ensure reliable heating during harsh winters

  • Upgrading or replacing air conditioning systems to keep indoor spaces cool, comfortable, and energy-efficient

  • Modernizing boilers to provide consistent heating and hot water while improving energy efficiency and system reliability

Searching for heating and air conditioning contractors in Thornhill, Ontario? Save yourself time and by posting your project on HomeStars. Compare profiles and request quotes from your preferred Thornhill, Ontario HVAC contractors and companies before making your final hiring decision.

What are the average costs of HVAC services in Thornhill, Ontario?

When hiring HVAC services in Thornhill, Ontario, prices vary depending on the type of system and the complexity of the installation or repair. Typical labour charges for furnace installations often run between $75 and $150 per hour, with most installations requiring 8 to 16 hours of work.

For a full heating/cooling system installation, homeowners generally pay between $4,000 and $7,500 for standard systems.

For common HVAC jobs in Thornhill, Ontario, expect to pay:

Find heating and cooling contractors in Thornhill, Ontario on HomeStars

Finding HVAC contractors and companies in Thornhill, Ontario doesn’t have to be stressful. Just post your project on HomeStars’ free and easy to use platform, and we’ll match you with pros ready to help.

How to hire Thornhill, Ontario heating and air conditioning contractors on HomeStars:

  1. Start by posting your project. Provide a clear description of your heating and cooling requirements and include photos to get precise quotes.
  2. Compare profiles, browse previous work history and get quotes from HVAC contractors and companies in Thornhill, Ontario.
  3. Connect with multiple HVAC contractors in Thornhill, Ontario to discuss your project, request quotes and ask any questions.
  4. Hire the right pro to get the job done and leave a review based on your experience. Our review system ensures that pros are rewarded for good work and held accountable for any problems.

All of the HVAC contractors and companies in Thornhill, Ontario who register with our platform undergo verification, including ID and company checks, so you can hire with confidence and peace of mind through HomeStars.

What to ask an Thornhill, Ontario HVAC contractor before hiring?

Looking for a HVAC contractor in Thornhill, Ontario? These questions can help you find a pro who’s the right fit for your heating, cooling, or ventilation project.

Are you licensed and insured in Thornhill, Ontario?

Most HVAC work, especially gas, boiler, or high-capacity heating systems, requires pros to be licensed. Ask your preferred HVAC contractors in Thornhill, Ontario for proof of licences and liability insurance to protect yourself in case of accidents or damage.

Will you handle permits and inspections if required?

Some HVAC installations or replacements, like gas-fired boilers, require municipal permits and inspections. Confirm the Thornhill, Ontario HVAC company will handle this so your installation is compliant.

What types of HVAC systems do you work on?

Some Thornhill, Ontario HVAC contractors specialize in furnaces, boilers, air conditioning, or heat pumps. Confirm they have experience with your system type to ensure proper installation or repair.

Do you offer maintenance or service plans?

Regular maintenance improves efficiency and extends system life. Check if your Thornhill, Ontario HVAC contractor offers annual inspections, filter changes, or seasonal tune-ups as part of a service plan.

How do you handle unexpected issues during installation?

Older homes or complex systems can reveal surprises, like outdated wiring or plumbing conflicts. Ask your heating and cooling contractor in Thornhill, Ontario how they communicate additional costs or changes to avoid surprises.

FAQ: Common questions about HVAC in Thornhill, Ontario

Can HVAC companies in Thornhill, Ontario remove old equipment?

Many Thornhill, Ontario HVAC companies include removal and disposal of old units as part of the installation service, though it’s best to confirm in advance.

How long do HVAC installations by Thornhill, Ontario HVAC contractors typically take?

Installation times vary depending on system type and home size. Furnaces or air conditioning systems usually take 1 to 2 days, while more complex setups may take longer.

Do heating and cooling contractors in Thornhill, Ontario offer energy audits?

Some Thornhill, Ontario HVAC contractors provide home energy assessments to identify ways to improve efficiency and reduce heating or cooling costs.

How do Thornhill, Ontario HVAC contractors handle refrigerant disposal?

Thornhill, Ontario HVAC contractors follow Canadian environmental regulations to safely recover, recycle, or dispose of refrigerants during air conditioning or heat pump servicing.

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