Find Furnace Repairs in Thornhill, Ontario | HomeStars

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Some of our top rated furnace repair services in Thornhill, Ontario

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4Most Energy
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Our HVAC service technicians have extensive experience in installing, repairing and maintaining all kinds of heating, cooling and indoor air quality systems. We’ll bring our commitment to excellent service to your home, and We take a serious, detail-oriented approach to every job, big or small. We offer free estimates to all prospective customers. Our prices are guaranteed, with no surprises, no hidden fees.
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Latest review:
It was a delight to work with 4most Energy from the day I first spoke to Rey over the phone to the day my boiler installation was done. The guy did not compel me to haggle or think twice about anything, whether the cost or the quality of the brand. He was happy to answer my million questions. The day of the installation was just as smooth. The team of two showed up right on time, and finished the job by evening as promised. The guys did an amazing job - very neat work, left the place tidy, took away my old unit and cleaned up everything without a spot on their way out. Really appreciate their professionalism. My full marks to 4most Energy - keep up the great work guys!
HVAC Trust - Heating, Air & Cooling
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
HVAC TRUST is a leading and highly qualified team of technicians in Canada offering around-the-clock services to all residents at a fraction of the cost. Here you will get all the heating and cooling devices under one roof, from air conditioners to water heaters. We believe in fair prices and complete transparency; thus, our products are listed according to the market prices. Our products which include Lennox Air Conditioners, Goodman, and other top brands come with free installation, 10 years + 1 Year labour warranty, and an easy financing option. We have been delivering exceptional services for more than 25 years. Buying from us or hiring our team will make you experience the best-in-class service. Also, our dedicated team can work brilliantly on any brand, thus ensuring every glitch can be fixed appropriately. We provide services that make you happy, period.
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Latest review:
We were looking for a new HVAC company after several poor customer service experiences with our previous one. The reviews for HVAC Trust seemed quite good and their price on a new Lennox A/C unit to replace our existing one was very competitive. Giselle was great to deal with in setting things up and the service techs that did the installation were probably the most professional and polite I have ever experienced in 35 years of home ownership. We are very satisfied with our purchase and would highly recommend HVAC Trust.
Pro Climate
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Best of the Best 2022
Best of Awards 2024
Since 2015, Pro Climate Heating & cooling has taken pride in providing the Greater Toronto Area with superior, honest and reliable Heating and Air Conditioning services. Pro climate is dedicated to its founding principle - building relationships based upon mutual trust and respect. Our team consists of several licensed and highly trained technicians that have the experience and expertise to successfully complete all types of commercial and industrial projects. We bring you the quality, dependability, and cost savings you want for your operations and offer you the highest level of knowledge and experience to service and provide solutions to your residential and commercial heating and cooling needs. We work with the best brands in the industry and offer the best prices & warranties. Pro Climate provides the following professional services: - Air conditioner - Heat pump - VRF - Furnace - IN-Door air quality - Water heater - HVAC System - Radiant In-floor Heating System - Hydronic Snow Melt System - Sheet Metal Ductwork -Patio heater -Fireplace
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Latest review:
I am satisfied with all aspects of my experience buying and installing a new furnace with Pro Climate. Armando spent a long time at the house figuring out the best, least disruptive way to install the furnace in our finished basement. The pricing was very competitive compared with other quotes that I received. And the actual installation was done in exactly the way that Armando said it would be done. The guys got it done in a reasonable time and left no mess. Great work. I would highly recommend Pro Climate to other people.
Ricochet ltd
Rating: 4.9 out of 5
Furnace repair service in Thornhill, Ontario
Best of Awards 2026
We are a company that will work with you to achieve your goals, nothing is too small or to big, we’ve have designed to completion of projects We’ve hung picture frame and mirrors. We are a team from design to a selected trades and meticulous taste. Thirty years of experience in construction, ready to deliver. Custom is our standard.
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Latest review:
Install or replace household appliances- 28 Nov 2025
George was efficient, friendly and obliging. A very pleasant experience, and I'm glad to have his contact for future jobs big and small.
Shymon Appliance Repair
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Appliances Repair Service Professional service Experienced technicians Call us today, to quickly fix your problem We repair: ▪️refrigerator ▪️washing machine ▪️dryer ▪️oven and stove ▪️cooktop ▪️dishwasher ▪️microwave ▪️kitchen ventilation appliances
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Latest review:
Repair household appliance- 4 Jun 2025
Alex did a great job fixing my washing machine Hes knowledgeable and very professional
Guardian Heating & Cooling
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
At Guardian Heating & Cooling, your satisfaction is guaranteed. If you're unhappy with your service, we'll issue a refund. We deliver reliable, no-nonsense HVAC solutions built around one priority, your comfort and safety. We specialize in furnace, air conditioning, boiler, and hot water system repair, installation, and maintenance across Thornhill and the GTA. Whether it’s no heat in the winter, no cooling in the summer, or no hot water when you need it most, our licensed technicians respond quickly, diagnose accurately, and fix it right the first time. What sets us apart is simple: • Clear communication, you always know what’s happening and why • Honest pricing, no surprises • Fast response, same-day service available • Quality workmanship, clean and up to code From emergency repairs to full system installations, we treat every home like it’s our own and every job like it matters, because it does. If you’re looking for dependable HVAC service without the runaround, you’re in the right place.
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Latest review:
Our AC broke down in the middle of the day and we have a new born in the house. They sent a technician same day and he checked out the system and told us what the issue was. We decided to upgrade our system. They installed a furnace and ac the next day and everything has been working perfectly since the installation.
Smart Comfort Air
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Smart Comfort Air is a reliable and trustworthy company that has been providing the GTA area and surrounding cities with HVAC services.We sell,install,service and repair residential and commercial HVAC equipment. We have many special offers for our equipments with the lowest price and best quality.
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Latest review:
Smart Comfort Air provided exceptional HVAC service with outstanding customer support. The technician, Reza, was punctual, professional, and explained repair options clearly without pressure. Their transparent pricing, efficient repairs, and follow-up care demonstrated their commitment to customer satisfaction. Highly recommend for reliable HVAC services!
Niro technical services
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
HVAC installation , repair and service , residential , commercial and industrial
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Latest review:
Repair or maintain airconditioning- 18 Jul 2025
Had my home AC recharged and cleaned — the service was reliable, efficient, and came with a fast response time. Very satisfied with the results. Would definitely recommend!
AC Furnace GTA Corp.
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Best of Awards 2026
Our first 5-star review on HomeStars dates back to May 2010. As a member of an HVAC Group of Companies, we are able to offer a wide range of widely recognized and respected brands—such as Bryant, Carrier, Weil-McLain, Armstrong Air, Ducane (Lennox), LG, NTI, and Midea—at very competitive prices. *** Why choose us? + 10/10 positive reviews on HomeStars.com and Google for all 3 locations in the GTA + More than 15 years of experience in HVAC installations + Google Verified and Guaranteed with 5-star rating based on 100+ reviews from all 3 locations (Toronto, Mississauga, Vaughan) + Fully licensed and certified team. Part of Home Renovation Saving Ontario Rebate Program + $2M Liability Insurance Coverage *** 3 locations: Toronto: 268 St Clarens Ave, Toronto, M6H 3W3 Vaughan: 112 Snidercroft Road #3A, Concord, L4K 2K1 Mississauga: 383 The Thicket, Mississauga, L5G 4P6 Working hours on weekdays: from 9 a.m. to 8 p.m. *** To guarantee fast services to our customers at this moment we provide services in the following areas of GTA: Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Aurora, Pickering, Burlington, Milton, Georgetown, Acton, Maple, Oakville, Newmarket, Barrie, Ajax, Oshawa and Whitby. If you live in other areas please contact us first. *** Rent to Own a Furnace or A/C just for $52.99/m+hst. Installation, free repair/maintenance services and all rental services included. *** Ask for more specials and promos
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Latest review:
Install or replace heating systems- 16 Jan 2026
My job was described as complicated 😊 As a 1940s Scarborough bungalow, it certainly has its challenges. But Eugene and the team took the time to make assessments of potential issues and delivered a very successful Furnace and Water heater replacement for me. AC was done as well, which we will test in the spring. The installation day was long, but they achieved it without having to consider an additional day for completion - that worked very well for me. The team was very professional, took care of my installation, knowledgeable and polite and were respectful of my property on a day when the weather decided to quickly change for the worse. This entire exercise was based on a very acceptable quote. All elements of documentation and process were well defined, executed quickly and managed by Marina. I have absolutely no hesitation in recommending the AC Furnace GTA Corp team to anyone looking for a high quality implementation at a fair price that’s done right the first time.
Hessam Kolbari
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Best of Awards 2026
LICENSED PLUMBER - All Plumbing Services; - 6 years experience; - Brand new house & full bathroom renovation Your comfort and peace of mind are our top priority. Contact us today for efficient and dependable service.
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Latest review:
Repair toilet or toilet flush- 5 May 2026
Had a great experience with Hassem. He installed 3 new toilets for us. Trustworthy and knowledgeable. Would not hesitate to use his services again.
Consult Mechanical
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
AT CONSULT MECHANICAL CUSTOMER SERVICE IS OUR COMMITMENT No matter how large or small the project, we will work with our clients from the beginning, through budgeting and planning phase, design, installation, and completion. Upon completion of all projects we then grow our relationship with our clients and offer them planned maintenance and service to ensure that their new Comfort system is operating as effectively and efficiently for years to come. We understand that choosing the right contractor is a big decision and this is why we greatly appreciate the opportunity in serving all of our clients. We are known to work with our clients, and going the extra mile is our standard. Our installation division is a team of qualified and continually trained technicians that pride themselves in offering the highest level of customer satisfaction.
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Latest review:
I recently had the pleasure of working with Consult Mechanical for the replacement of two furnaces and, later, a new air conditioner. From start to finish, the experience was exceptional. The quote provided was fair and competitive, and the team took the time to thoroughly explain all the available options, ensuring I could make an informed decision. They arrived promptly on the scheduled days and completed the installations efficiently. I was particularly impressed with their professionalism and attention to detail. The team left the work areas spotless, which was greatly appreciated. Throughout the process, their communication was prompt and clear, addressing any questions or concerns I had swiftly. They took the time to assess the electric filters as well as our humidifiers, and ensured everything was up and running like new. Overall, Consult Mechanical exceeded my expectations, and I would highly recommend them for any HVAC needs.
ABM Home Climate Inc
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Best of Awards 2023
ABM Home Climate is your local family operated business specializing in Heating, Air Conditioning and Plumbing. We work with many of the country’s leading manufacturers to offer you the outstanding service we know you expect and deserve. With over 18 years of experience, our expert service technicians and installers specialize in all aspects of residential and commercial heating, air conditioning, plumbing, and refrigeration. We would be pleased to offer you free information with an estimate for your tailor-made cooling and heating conversion. We offer around the clock customer service and preventative maintenance packages; we pride ourselves on being the most reliable and dependable heating, air conditioning, plumbing, contractors in the area. We are fully bonded and insured, and we are an accredited business with the Better Business Bureau. All licenses and accreditation are available on request. Please call for your free estimate, sit back, and let our experience work for all your comfort needs.
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Latest review:
price is reasonable versus outside prices for the AC and the coils, especially for a brand like Carrier
Coral Mechanical Inc
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Best of Awards 2026
Welcome to CORAL MECHANICAL INC. Your Premier Local Heating and Cooling Specialist At Coral Mechanical, we are dedicated to delivering top-tier heating and cooling solutions tailored to meet your specific needs. With a wealth of experience in the industry, we take pride in offering a wide array of services, ensuring optimal comfort and efficiency for residential and commercial spaces alike. **Our Services Include:** 1. HEATING (GAS, ELECTRIC & HEAT PUMP) : Furnace - Fireplace - Rooftop - Unit Heater - Ceiling Heater - Heat Pump - etc 2. COOLING : Centrally Ducted Air conditioner - Mini split ductless - Heat Pump 3. INDOOR AIR QUALITY : Humidifier, HRV, ERV, HEPA Filter and Air purification ensuring a healthier environment for you and your loved ones. 4. HVAC MAINTENANCE : We offer comprehensive HVAC system maintenance plans to keep your systems running smoothly, prolonging their lifespan and maximizing efficiency. **Why Choose Us?** - FLEXIBLE & LOW INTEREST RATES PAYMENT PLANS - WEEKLY PROMOTIONS - ADDITIONAL DISCOUNT for Government, Health Care and Military personnel - PROFESSIONAISM : Our skilled technicians are licensed, insured, and dedicated to delivering exceptional service. - RELIABLITY We prioritize punctuality and strive to complete every job efficiently and effectively. - CUSTOMER SATISFACTION Your comfort is our priority, and we go the extra mile to ensure your satisfaction with our services. Contact CORAL MECHANICAL today to experience unparalleled expertise and reliable service for all your heating and cooling needs.
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Latest review:
Repair or maintain airconditioning- 19 May 2026
Ali was very nice. He came and looked at the unit, and ultimately had told me that the unit would not cool the space as it was large with windows. His boss called me to explain and tried to essentially sell me a new unit, and charged me $350 to recharge the unit and clean the filter (which was barely dirty). I later had another person come to install an AC in my bedroom who looked at that same unit that Ali had serviced. He noted that it should be fine at cooling the space, and that it was the blower that needed to be cleaned. I let Ali’s boss know this and asked why this wasn’t done - to which he had stated that he didn’t realize that it was dirty and would send him back to clean the unit which he did - and didn’t charge me. The unit is now working perfectly fine and does a great job cooling the space. Ali was very nice and did a good job, just wish they as a company were more focused on inspecting everything thoroughly before trying to sell me a new unit.
Air Makers Inc
Rating: 4.9 out of 5
Furnace repair service in Thornhill, Ontario
Best of the Best 2022
Best of Awards 2022
Since 1998, dedicated to its founding principle - building relationships based upon mutual trust and respect - Air Makers Inc. has been providing the Greater Toronto Area with honest and reliable Heating and Air Conditioning services. Through the supply and installation of industry-leading heating, ventilation and air conditioning (HVAC) products and solutions, we make every effort in helping you live more comfortable and healthy lives. Air Makers' pledge to quality means that our goal is beyond merely administering an HVAC business. We, in fact, attempt to build a foundation of mutual trust and respect and further establish a long-term and reciprocated relationship with our clients.
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Latest review:
Install or replace heating systems- 17 Jul 2025
furnace and air conditioning installed last summer but when fall came, found out the air conditioner wasn't working properly due to incorrect wiring setup
Consumers Energy Management
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Consumers Energy Management offers following services: Furnace and Air Conditioner Repair, HVAC Maintenance, Water Softeners, Sales and Service. We also offer following services: Heating and Cooling Protection Plans, Duct Cleaning, Attic Insulation, Home Inspection.
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Latest review:
When our furnace started to malfunction, I called Edward, who was my furnace maintenance serviceman. Edward came by and gave our furnace a temporary fix. He pointed out that there was a leakage in the system, and the fix would likely not last. Seeing that our furnace was twenty years old, my wife and I decided it was time to replace the system, and since Edward had given us good reliable service in the past, we thought he would be the appropriate provider. Two days later, Edward arrived as scheduled with two other servicemen. They fully protected (the flooring of) the part of the house through which they had to move the equipment to get to the basement where the furnace is normally housed. They cleared an adequate area so that they could worked reasonably comfortably. For three to four hours, they worked furiously at dismantling the old furnace, and installing the new one. Throughout the process, they seemed to know exactly what to do. The only question they had was one concerning the exhaust pipe, as regulations have changed. In the end, they completed the installation, moved everything in the basement back in place, and did a general sweep up. Because the new furnace is a little smaller than the old one, the basement actually seems to have gained some space in the process. At the conclusion of the installation, Edward accompanied me to the site, explained the equipment to me. He also explained the invoice to me and answered my queries. This marks the second time I have dealt with Edward, first time being furnace maintenance last year. I always find him to be a very trustworthy person. He is quiet but he tells you everything you should know and need to know. He is a man of his words, and certainly very knowledgeable, and gets things done. Now I know he is also technically very competent, and can organize teams to get systems installed.
Always Spring
Rating: 5 out of 5
Furnace repair service in Thornhill, Ontario
Heating & Cooling Insulation,service units,Gas piping,Fireplace
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Latest review:
Refaced 2 fireplaces Good value pleasant to deal with Would recommend to others looking for similar work