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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

    Professionalism and Commitment is our trait. With years of experience in business we leave no issue unaddressed making it sure that the customer call us again for referrals.

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  • HVAC contractor in Thornhill, Ontario

    Thank you for visiting our profile! At J-Z Plumbing, we provide complete plumbing and drain services. We have a team of highly skilled professionals who focus on quality work and maximum customer satisfaction. Contact us for any inquiries and we ensure to provide the best advice, quality and price! 647 607-4878 info@jzplumbing.ca

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  • Need a HVAC contractor? Macroklima Heating & Cooling can help you. We pride ourselves on the quality work that we deliver to each and every client. Contact us to talk about your job and get a quote.

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  • HVAC contractor in Thornhill, Ontario

    Alcona Home Services provides dependable home repair and maintenance solutions with a strong focus on professional plumbing services. Based in Innisfil, we help homeowners with everything from leaks and clogged drains to fixture upgrades, rough-ins, water heater work, and full plumbing installations. Our goal is simple: deliver high-quality workmanship, clear communication, and trustworthy service on every project. We treat your home like our own and take pride in offering efficient, long-lasting solutions.

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    • Best of Awards 2026

    EverReady Electrical is a premier provider of residential and light commercial electrical services, proudly serving homeowners, contractors, and property managers throughout Durham and the surrounding areas. Built on a foundation of integrity, precision, and accountability, we are committed to delivering electrical solutions that meet the highest standards of safety, performance, and reliability. Our team consists of fully licensed and insured electricians who bring extensive field experience and technical expertise to every project. Each member is carefully selected not only for their skill, but for their professionalism, attention to detail, and commitment to excellence. From initial assessment to project completion, we ensure every aspect of our work is executed efficiently, safely, and in full compliance with all applicable codes and regulations. At EverReady Electrical, we understand that quality workmanship begins with quality materials. That’s why we use only premium-grade products and proven installation methods to deliver durable, long-lasting results. Whether we are supporting a large-scale renovation or responding to a service call, our clients can expect consistent communication, organized job sites, and dependable timelines. To see the quality of our work and hear directly from our satisfied clients, please visit the links below: Client Video Testimonials: https://tinyurl.cx/IFYzl Completed Projects & Photos: https://tinyurl.cx/dOVlH Our Services Include: Complete residential and commercial wiring Electrical panel upgrades, replacements, and installations Custom lighting solutions, including pot lights and exterior lighting EV charger installations Renovation and new circuit installations Electrical troubleshooting, diagnostics, and repairs Knob and tube wiring replacement 24/7 emergency electrical services We recognize the importance of responsiveness in our industry. Our team is available around the clock to address urgent issues, and we strive to provide prompt scheduling and, whenever possible, same-day service to minimize disruption to your home or project. EverReady Electrical is dedicated to building long-term relationships through honest communication, dependable service, and consistently exceptional results. When you partner with us, you can be confident that your electrical work is in capable, professional hands.

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  • HVAC contractor in Thornhill, Ontario

    Start Your Next Project with Green Crew Contracting At Green Crew Contracting Inc., we believe every outdoor indoor space has the potential to become something extraordinary. Whether you’re envisioning a luxurious patio, a sparkling pool, or a complete backyard transformation, we’re here to bring your dream to life with precision, creativity, and unparalleled craftsmanship. Book your project today and begin planning tomorrow with the guidance of our expert team. Specializing in landscaping, softscaping, hardscaping, outdoor kitchens, pools, renovations, and more, we tailor every design to suit your lifestyle and needs. From detailed planning to flawless execution, we focus on delivering results that exceed expectations. Schedule your complimentary in-home consultation and discover how Green Crew Contracting can elevate your property. We provide honest, professional advice with no pressure or obligation, ensuring a seamless and enjoyable experience from start to finish. Why Choose Green Crew Contracting? • Impeccable Workmanship • Commitment to Customer Satisfaction • On-Time Project Delivery • Innovative and Creative Designs Transform your outdoor space into a functional and breathtaking retreat. Let’s get started today!

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  • HVAC contractor in Thornhill, Ontario
    • Best of Awards 2025

    We specialize in commercial renovations and home improvement, offering a comprehensive range of high-quality services, including but not limited to: ✔ Commercial & Residential Renovations ✔ Kitchen Cabinetry & Countertops (Quartz, Granite, Marble) ✔ Basement Finishing & Bathroom Remodeling ✔ Flooring, Tiling & Painting ✔ Windows & Doors Installation ✔ Additions, Electrical & Plumbing ✔ Decks, Fences & Foundation Repair ✔ Insulation & Commercial Fit-Ups ✔ Restoration & Landscaping ✔ Interlocking & Driveway Paving ✔ Wallpaper & Commercial Carpet Installation ✔ Custom Wall Units & Closets Whether you’re a homeowner or a property/condominium management company looking for reliable service, premium materials, and high-quality finishes, Built Wright Inc. is here to meet all your renovation needs.

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  • HVAC contractor in Thornhill, Ontario

    Proaire Systems Inc. can help you with your install or replace heating systems, install or replace airconditioning, install or replace solar pv panels, repair or maintain solar pv panels, install or replace floor heating, install or replace gas systems and pipes, install or replace boiler, repair or maintain boiler, repair or maintain floor heating, install or replace radiators, install or replace thermostats, repair or maintain airconditioning, repair or maintain heating system, install or replace ventilation system, install or replace heatpump, install solar water heater, repair or maintain heatpump, repair solar water heater, install or replace mist-generating system, install or replace cold room, install or replace whirlpool, spa and wellness, energy audit, clean air ducts & vents, install or repair water heaters, water or fuel tanks & air cleaners and humidifiers request in Ajax and its surrounding cities. They’re at your disposal to listen and assist you in all your projects. Get in touch with Proaire Systems Inc. now to discuss your needs and arrange a quote.

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  • HVAC contractor in Thornhill, Ontario

    Certified and skilled HVAC and Gas technician. Operating under DreBuilt Pro Solutions we have the right solutions for your needs from big to small and start to finish. Specializing in HVAC-R & Gas DreBuilt Pro Solutions also provides many other services including residential home renovations and repairs from bathrooms to basements to kitchens as well as maintenance and repairs.

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  • HVAC contractor in Thornhill, Ontario

    Transform Your Home with contractors13– GTA’s Trusted Renovation Experts! ✨ Looking to upgrade your home? Need a reliable team to get the job done quickly and professionally? Look no further! Contractors 13 is a GTA-based residential renovation company that brings beauty and functionality to every space we renovate. Whether you're updating a single room or renovating your entire home, our expert team delivers top-notch craftsmanship with a focus on speed, precision, and customer satisfaction. Our Services Include: Kitchen Renovations – Modernize your space with custom cabinetry, countertops, and stylish finishes. Bathroom Upgrades – From sleek designs to full remodels, we create spa-like retreats. Basement Finishing – Turn your basement into a functional living space, rental unit, or entertainment hub. Separate entrance, egress windows for legal basement unit. Flooring & Painting – Vinyl, tile, laminate, or fresh paint—we do it all! Doors, Windows & Trim Work – Enhance your home's aesthetics and energy efficiency. ️ General Home Improvements – No project is too big or

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  • HVAC contractor in Thornhill, Ontario

    I am jouneyman mason with over fifty years experience in all types of masonry. I am a designer of custom stone work as well as being able to build fireplaces from scratch. I have been working in the GTA and northern Ontario for custom builders and have a highly experienced crew . I am fully insured and willing to travel for the right customer .

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  • HVAC contractor in Thornhill, Ontario

    Our mission is to provide high-quality HVAC solutions rooted in technical excellence, integrity, and a strong commitment to customer care. As a growing and trusted leader in the industry, we focus on delivering dependable service, building lasting relationships, and continuously improving to meet the evolving needs of the communities we serve. We take pride in doing the job right, every time — with professionalism our clients can count on.

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  • HVAC contractor in Thornhill, Ontario
    • Best of Awards 2026

    For professional work done right the first time call EMMONS ELECTRIC. We are fully insured and a registered ACP Contractor with the ELECTRICAL SAFETY AUTHORITY. All new wiring installed by Emmons Electric is guaranteed to be done by qualified technicians, inspected and approved by ESA. Trusted for Over 20 Years Emmons Electric Inc. is a local company operating out of Oshawa, Ontario, Canada; serving Whitby, Bowmanville, Courtice, Oshawa, Ajax, Pickering, Newcastle and other cities in the eastern GTA. Owner/Operator Brad Emmons has been working as an electrician for 30 years, is a licensed Master Electrician and is certified by the ECRA. Trust the team of electricians at Emmons Electric because of our years of experience, knowledge and great service. Emmons Electric Inc. is a proven and time tested electrician with over 30 years experience, we are a company you can depend on. New construction, renovations, and additions, we do it all! Call Emmons Electric or browse our site for more information about our electricians in Bowmanville, Courtice, Whitby, Ajax, Oshawa, Pickering and surrounding areas. Our Services Residential Emmons Electric Inc. is a proven and time tested electrician with over 30 years experience from Pickering to Bowmanville, we are a company you can depend on for your home. Commercial and Industrial Each of our electricians is fully trained in installation techniques and codes to ensure a safe and trouble-free installation. We want to make sure that you receive the best possible installation and products Energy-efficient lighting Emmons Electric has a vast menu of services including innovative design and expert installation of a wide variety of exterior lighting fixtures.

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  • HVAC contractor in Thornhill, Ontario

    General Contracting

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  • HVAC contractor in Thornhill, Ontario

    20 years experience. Working on contract of services offering warranty and insurance. Services offering but not limited: 1. All concrete works, repairs/revitalisation and from scratch ( porches, stairs, patio, backyard, driveway, separate entrance retaining wall, foundation etc) 2. Epoxy flooring, industrial commercial and private. 3. Waterproofing 4. Swimming pools 5. Masssonry 6. Drywall, taping, mudding, plaster, painting. Industrial, commercial, residential, minor repairs etc

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  • HVAC contractor in Thornhill, Ontario

    I am an experienced HVAC technician looking to help clients solve any issues.

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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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