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Find air conditioning repair pros in Thornhill, Ontario

When your air conditioning breaks down, it can be stressful trying to find the right pro to fix it. That’s where HomeStars steps in: through our convenient all-in-one platform, we connect you with available pros who are ready to take on your repair project! Compare quotes, read reviews, and make the hire, all in the same place.

A worker uses a wrench to fix joints and copper piping in an air conditioning unit.

Some of our top rated air conditioning repair specialists in Thornhill, Ontario

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  • QL MECHANICAL

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    30 years experience in residential home construction. 15 years residential and light commercial HVAC. Years of experience in moving and cleaning.

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  • BIG BRO Heating and Air Conditioning

    Rating: 5 out of 5
    Air Conditioning Repair Specialist in Thornhill, Ontario

    Our company BIG BRO Heating and Air Conditioning has been a part of the industry for the past 7+ years specializing in installation, repairs, and maintenance of all things HVAC. Services include but not limited to the following: furnaces, ACs, water heaters, heat pumps, tankless water heaters, hydronic heating, boilers, humidifiers, ductwork, natural gas lines, propane piping, HRV, new build construction, etc.

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    Latest review:
    Prabhan was excellent of explaining all the Pros and Cons of the Heat Pump he is very well spoken and detailed. I highly recommend him for others who needs of a Heat Pump or any other HVAC needs.

  • Aw Mechanical

    Rating: 5 out of 5
    Air Conditioning Repair Specialist in Thornhill, Ontario
    • Best of the Best 2022
    • Best of Awards 2022

    AW Mechanical handles heating and air conditioning with over 30 years of experience. Ask for Tony. Servicing all makes and models in the GTA. Servicing both residential and commercial. At your service! Some of the services that we offer are, FURNACES,AIR-CONDITIONERS,HUMIDIFIERS,THERMOSTATS, FILTERS,COMMERCIAL REFRIGERATION, HOT WATER TANKS, GAS PIPING, UNIT HEATERS (COMMERCIAL), DUCTLESS AIR CONDITIONERS

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    Latest review:
    Install or replace gas systems and pipes-
    Tony was able to quickly and effectively repair and replace an aged gas line and connections for an old stove. Highly recommend Tony.

  • HA Stars

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    Welcome to HA Stars where exceptional craftsmenship meets meticulous attention to detail. With over 3 year of experience in prfoessional furniture assembly/including renowned work with IKEA and renowned brands. I specialize in flawless installation of PAC wardrobes, beds, chairs and precision blindfittings. Each project is executed with care to ensure durability, functionality and refined asthetics. Our expert team extends our capabilities accross multiple disciplines. Our professional painters bring extensive experience in full-house renovations including basements, doors, celings, walls and specialized mudding and plaster finishing. Complementing these services, our basement electrical engineer expertly manages comprehensive electrical projects from installing pod lights, fans, chandeliers, switches, sensor switches, dimmers and plugs to complete house wiring, panel upgrades, EV charges installation and exhaust fan installations. In addition, our highly professional HVAC team delivers top tier solutions, including new furnace installations, AC setups and the installation of both tankless and traditional water heaters. At HA stars, quality efficiency and exceptional customer satisfaciton are our priorities.

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  • ENERGY CARE CANADA HOME SERVICE INC

    Rating: 5 out of 5
    Air Conditioning Repair Specialist in Thornhill, Ontario

    Founded in Missisauga , Energy Care Canada Home Services has over 14 years of experience in the industry. As a trusted provider in our field, we are committed to providing high-quality products and professional services to our clients. Our team is highly experienced and knowledgeable, ensuring that every customer receives the best possible service. We offer services including installation and maintenance for furnaces, air conditioners, humidifier , fireplaces, water heaters, and rooftop units .Our skilled technicians are ready to provide on-site services, ensuring that your needs are met promptly. Whether it's product installation, maintenance, or technical support, our team is dedicated to delivering exceptional service. Choose Energy Care Canada for reliable products and professional service and competitive service prices. We look forward to working with you and creating a bright future together!

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    Latest review:
    Our furnace would not running after having a different company service our furnace . Energy Care Canada'technician who came out had it fixed and running quickly. I was really impressed.

  • Architectural & Structural Engineering

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    I've been working as a structural engineer for eight years on residential and commercial building projects. I'm currently open to new project and I am collaborating with licensed architects and civil engineers for city permit. Please contact me.

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  • Birchcliff Technical Services Ltd.

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    Birchcliff Technical Services Ltd. can help you with your install or repair electrical system, install or repair electrical sockets and switches, install or replace radiators, put up lighting, various small jobs, install or replace ev charger, install smart home automation, ceiling fan, install or repair bath exhaust fan, install or repair generator & interior lighting design plan request in Toronto and its surrounding cities. They’re at your disposal to listen and assist you in all your projects. Get in touch with Birchcliff Technical Services Ltd. now to discuss your needs and arrange a quote.

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  • Vision to Home Renovations

    Rating: 5 out of 5
    Air Conditioning Repair Specialist in Thornhill, Ontario

    NO DEPOSIT for most jobs. Transform Your Space with Vision to Home Renovations. We shape the unseen into the unforgettable. Serving Mississauga and Surrounding Areas. Whether you're planning interior renovations, need repairs, or want to upgrade your outdoor space with a new deck or fence, Vision to Home Renovations is here to help. Jason is ready to listen, advise, and bring your vision to life — no project is too big or small. Fully insured and licensed. Let’s connect to discuss your needs and arrange a free, no-obligation quote.

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    Latest review:
    Repair floor-
    Excellent! Jason was professional, accurate, punctual and kept us informed and updated on every aspect of the project. The finished floor repair looks amazing and blends in so well with the rest of the floor- you would never know it was a repair. Thank you Jason, it was a pleasure to have you in our home!

  • AtlasCare

    Rating: 4.8 out of 5
    Air Conditioning Repair Specialist in Thornhill, Ontario
    • Best of the Best 2025
    • Best of Awards 2026
    • Giving Back Award 2017

    Welcome to AtlasCare, a family-run business that has been serving the Greater Toronto Area since 1932. With 88 years of experience, we provide top-notch HVAC and plumbing services, ensuring your home is comfortable and safe. At AtlasCare, our services cover everything from furnace repair and air conditioner service to water heater maintenance and smart thermostat installations. Additionally, we offer expert plumbing solutions, including drain clearing. With AtlasCare, you have access to a complete range of HVAC and plumbing services customized to fit your needs. We adhere to strict safety protocols, including disinfecting our equipment, practicing enhanced hygiene, wearing protective gear, and facilitating contactless interactions. This allows us to offer essential services while prioritizing the well-being of our customers and team members. We're proud to have earned numerous awards for our commitment to quality and customer satisfaction, including the HomeStars Best of 2020 Award and the 2020 Consumer Choice Award for Air Conditioning and Heating Contractors in the Greater Toronto Area. As your dependable local partner, AtlasCare is always ready to assist you—24/7. Whether it's a routine maintenance check or an emergency repair, we're here to ensure your home systems are functioning perfectly. Join the AtlasCare family today and experience the peace of mind that comes from our award-winning service. Contact us anytime to schedule a service or to learn more about how we can enhance the comfort and safety of your home!

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    Latest review:
    Repair or maintain air conditioning-
    Job was completed quickly at a good price. Person was knowledgeable and friendly.

  • Silver wrench hvac

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    Hi this is gavy from silver wrench hvac we are specilized in all sort of residencial hvac needs from scratch to finish we have worked with big canadian giant hvac companies in canada to we are moving with ton of experience and coustomer service we belive in quality and coustomer satisfaction the greatest plus point of is is we never take final payment unit the job reaches to your level Thanks you for your time looking further to meet 647$832$8791

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  • Taraz air Inc.

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    Taraz Air Inc. has proudly served the GTA for over 10 years, providing reliable heating, cooling, and custom ductwork services. We specialize in furnace, A/C, and heat pump installations, gas lines, and HRV systems—always with quality workmanship and honest service. Serving Newmarket, Richmond Hill, Aurora, Vaughan, and the GTA.

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  • Nello Montesano

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    Alderwood Mechanical is a trusted HVAC company focused on delivering high-quality heating, cooling, and mechanical services with honesty, precision, and long-term value. We specialize in furnace installations, air conditioning systems, boiler services, water heaters, tankless systems, heat pumps, ductwork, maintenance plans, and emergency repairs for residential and commercial properties. Our philosophy is simple: customers should only pay for what they truly need. We believe in ownership over rentals, transparent pricing over hidden fees, and building long-term relationships through reliable service and expert workmanship. At Alderwood Mechanical, we combine modern solutions with old-school integrity. From routine maintenance to full system upgrades, our goal is to provide comfort, efficiency, and peace of mind with every job. We take pride in clean work, fast response times, and delivering an experience that feels professional, trustworthy, and built to last. HVAC Services Furnace Installation & Repair Air Conditioning Installation & Repair Boiler Services Heat Pump Installation & Service Rooftop Unit (RTU) Service Ductwork & Ventilation Gas Line Installation Indoor Air Quality Solutions Emergency Repair And more

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  • KSC HVAC Group INC

    Rating: 4.9 out of 5
    Air Conditioning Repair Specialist in Thornhill, Ontario

    We are a trusted HVAC company serving Brampton and the surrounding area, specializing in residential and commercial heating and cooling solutions. Our services include professional installation, repair, and maintenance of air conditioning systems, furnaces, and complete HVAC systems. We focus on delivering reliable, energy-efficient solutions tailored to each property, whether it's a home, office, or commercial space. From new system installations to urgent repairs, we provide honest recommendations, quality workmanship, and fast, dependable service. With a strong focus on customer satisfaction, we ensure every job is completed properly the first time. Contact us today for a quote or to schedule service.

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    Latest review:
    Install or replace air conditioning-
    I needed an Air Conditioner disconnected and reconnected on my flat roof Kevin arrived the following day and had the best price compared to all others that provided a proposal Quick-Friendly-did the job & showed up on time . Highly recommended

  • Nordmen mechanical inc

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    HVAC services , installs , troubleshooting Hvac systems , heat pump , furnace , air handlers, split systems . certified with 313d and G2 gas license .

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  • FIXORA Appliance Repair

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    Professional Appliance Repair Specialists Experienced technicians offering high-quality repairs for all major appliances. Efficient service, fair pricing, and long-lasting solutions. Your satisfaction is our priority.

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  • James Calderwood

    No reviews yet

    Air Conditioning Repair Specialist in Thornhill, Ontario

    At Calder Contracting, we take pride in delivering high-quality, reliable home improvement services you can trust. We specialize in roofing, siding, eavestroughs, soffit & fascia, and full exterior renovations, along with electrical, plumbing, and general contracting work. Whether it’s a small repair or a full project, we approach every job with attention to detail and a commitment to doing it right the first time. We also offer interior renovation services, including basement finishing, kitchen remodels, bathroom upgrades, full home renovations, and interior & exterior painting, giving homeowners a complete solution for upgrading their space inside and out. What sets us apart is our focus on honest communication, fair pricing, and professional workmanship. We work closely with homeowners to ensure every project meets their expectations, using quality materials and proven methods to ensure long-lasting results. At Calder Contracting, your home is our priority and we stand behind every job we do.

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4.8

Top rated Air Conditioning Repair Specialists

Our Air Conditioning Repair Specialists in Thornhill, Ontario, are rated 4.8 out of 5 based on 166 reviews from homeowners like you.

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What services are available for air conditioning repair in Thornhill, Ontario?

Whether for a central air system, a ductless setup, or otherwise, there are pros who can help you with several kinds of AC repairs in Thornhill, Ontario. The air conditioning repair service you’ll need will depend on your air conditioning setup and the specific repair.

Here are some of the most common services carried out by pros who offer AC repairs in Thornhill, Ontario:

  • Refrigerant leak detection and recharge: Identifying and sealing leaks, then restoring refrigerant levels to keep your system cooling effectively
  • Compressor repair and replacement: Diagnosing and fixing compressor issues, which are among the most common causes of a system that runs but fails to cool
  • Electrical and thermostat repairs: Fixing faulty wiring, capacitors, contactors, or thermostats that prevent your system from starting or running properly

No matter your air conditioning needs, it’s easy to find someone who can help in Thornhill, Ontario. Just post your project on HomeStars now, and available contractors in your area can register their interest!

What are the average costs of air conditioning repair in Thornhill, Ontario?

When budgeting for air conditioning repair in Thornhill, Ontario, costs can range from under $200 for minor electrical fixes to over $2,500 for a compressor replacement. What you'll pay depends largely on the type of repair, the age of your system, and whether parts need to be ordered.

Typical costs for common air conditioning repair services in Thornhill, Ontario:

  • Refrigerant leak detection and recharge: between $200 and $500, though older units using phased-out refrigerants can push costs higher
  • Costs for AC compressor repair and replacement: repairs generally range from $1,000 to $2,500 depending on the unit size and whether parts are covered under warranty
  • Electrical and thermostat repairs: typically fall between $150 and $400 for most electrical components, while thermostat replacement generally runs $150 to $300
  • Emergency repairs: several models are used to calculate emergency or after-hours surcharges but generally range from around $75 to $350 depending on the repair

HomeStars tip: To ensure you get the most accurate costs for Thornhill, Ontario, make sure to get everything written down in an itemized quote. This avoids misunderstandings and supports transparency and clear communication for both you and the contractor.

How to find services for air conditioning repairs in Thornhill, Ontario with HomeStars

Finding an available pro to help with AC repairs in Thornhill, Ontario can be time-consuming and stressful. Leave it to HomeStars to make it easier for you! We connect you with available and eager AC repair pros ready to take on your project. To get started, just follow these simple steps:

  1. Start by posting your project. Provide a clear description of your air conditioning repair needs and, if possible, include photos to get precise quotes.
  2. Receive offers from available pros, review work history, and read customer feedback for AC repairs in Thornhill, Ontario.
  3. Connect with AC repair pros in Thornhill, Ontario to discuss your project, request and compare quotes, and ask any questions.
  4. Hire the right pro to get the job done and leave a review based on your experience.

HomeStars tip: Once your project is done, make sure to leave a review. Our review system ensures that pros are rewarded for good work and held accountable for any problems.

Pros on HomeStars undergo checks at registration – such as ID documents, company details, and certifications for regulated jobs and skill assessments – allowing you to hire with confidence.

Extra peace of mind with the HomeStars Confidence Program

The HomeStars Confidence Program is designed to give you added confidence when hiring through our platform. If your job qualifies under the Program and we determine that a claim meets the Program requirements, HomeStars may cover what you owe the Pro on an eligible job with a quote of up to CAD $10,000, in line with our terms and conditions.

FAQ: Common questions about air conditioning repair services in Thornhill, Ontario

Are air conditioning repair pros in Thornhill, Ontario insured and licensed?

In Thornhill, Ontario, AC repair pros should hold a valid HVAC licence and carry both liability insurance and workers' compensation coverage. This is especially important for any work involving refrigerants, which are regulated under federal law. Before committing to a pro, ask for proof of both, and don't skip this step just because the repair seems minor.

Do air conditioning repair pros in Thornhill, Ontario need a permit?

For most repair work in Thornhill, Ontario, a permit isn't required. However, if the repair involves replacing a major component like a compressor, or any work that touches refrigerant lines or electrical systems, some municipalities may require one. Your pro should know the local rules and flag this upfront if it applies to your job.

How do I know if my air conditioner needs a repair or full replacement?

A good rule of thumb is to weigh the cost of the repair against the age of your unit. If your system is more than 10 to 15 years old and the repair costs more than half the price of a new unit, replacement is often the better investment.

Recurring breakdowns, rising energy bills, and uneven cooling are all signs that your system may be nearing the end of its life. If you're unsure, post your job on HomeStars to get quotes from air conditioning pros in Thornhill, Ontario who can assess your system and help you make the call. You can also check out our guide to central air conditioner costs if you ultimately need a full replacement.

Can an air conditioning repair pro in Thornhill, Ontario also handle my heating needs?

In most cases, yes. Air conditioning repair pros in Thornhill, Ontario are often HVAC contractors who are just as comfortable working on your heating system as your cooling one. If you need someone to handle both, [HVAC contractors in Thornhill, Ontario](https://www.homestars.com/heating/hvac-contractor-pros/Thornhill, Ontario) on HomeStars are a good place to start, as many pros offer full heating and cooling services under one roof.

You can also take a look at our guide to heating and cooling costs to get a sense of what a combined project might run you.

Do air conditioning repair pros in Thornhill, Ontario handle cleanup after the job?

For most repair calls in Thornhill, Ontario, there isn't much to clean up, but a good pro should leave your space the way they found it. If a major component is being replaced, confirm upfront whether old parts and packaging are included in the removal or if there's an additional disposal fee.

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