Find Boiler Repair Services in Thornhill, Ontario | HomeStars

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Some of our top rated boiler repair specialists in Thornhill, Ontario

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Maple Air Inc
Rating: 4.8 out of 5
Boiler repair specialist in Thornhill, Ontario
Best of the Best 2025
Best of Awards 2025
At Maple Air, we redefine excellence in the HVAC industry by prioritizing "Quality Service" to create a comfortable haven for you and your loved ones. Specializing in the installation, repair, and maintenance of heating, cooling, and electrical systems, we serve both residential and commercial spaces with expertise and precision. Our comprehensive services include furnace and air conditioning repairs, heat pump and ductless system installations, and water heater solutions (tank and tankless). We also offer boiler servicing, programmable thermostats, indoor air quality solutions, and full ventilation and ductwork services. Additionally, we provide gas piping for BBQs and stoves, fireplace installations, and a variety of electrical services such as wiring, lighting installations, and circuit upgrades to keep your home and business safe and efficient. With Maple Care, our maintenance and protection plan, we ensure your systems are always running at their best. Choose Maple Air for a seamless HVAC and electrical experience that exceeds expectations, delivering optimal comfort and transforming your home into a true retreat.
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Latest review:
Repair or maintain heatpump- 16 Sep 2025
Excellent! Honest and upfront service for our air conditioner! Extremely pleased and wouldn’t hesitate to use them again! Thank you!
All Pro Contracting Inc.
Rating: 5 out of 5
Boiler repair specialist in Thornhill, Ontario
All Pro Construction has been servicing the GTA are for over 15+ years. With a track record of doing everything from custom homes to renovations. We pride ourself on attention to detail and never cutting corners to make a small profit. Its our pleasure to work side by side with you to get the job done!
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Latest review:
I have worked with many contractors/home improvement people and I have to say this was the best experience ever. The price was right and didn't change over the course of the job; the scheduling was perfect and my bathroom looks and feels amazing!!! Sean and his highly professional team really value customer service and high quality work. They consulted me and when needed, were respectful of my home and my space and just overall the process was a breeze! If you want a wonderful experience, leave it to All Pro Contracting!
Air Leaders Inc.
Rating: 5 out of 5
Boiler repair specialist in Thornhill, Ontario
Best of the Best 2025
Best of Awards 2025
Air Leaders Inc. is your local HVAC expert proudly serving the Greater Toronto Area (GTA) with reliable heating, cooling, and hot water solutions for both residential and commercial properties. Our licensed technicians specialize in the installation, repair, and maintenance of high-efficiency furnaces, air conditioners, tankless water heaters, boilers, heat pumps, ductless mini-splits, and rooftop units. We are committed to providing energy-efficient, long-lasting systems that improve comfort and reduce utility costs. Whether you need a new HVAC installation, emergency repair, or annual maintenance, we deliver professional service backed by honest recommendations and quality workmanship. Our services include: ✅ Furnace installation, repair & maintenance ✅ Central & ductless air conditioning installation, repair & maintenance ✅ Tankless & tank water heater installation and service ✅ Heat pump & boiler system expertise ✅ Gas line installation & gas fireplace setup ✅ Oil-to-gas and electric-to-gas conversion services We proudly serve all areas of the Greater Toronto Area. 🕑 Hours: Mon–Fri: 8:00 AM – 8:00 PM Sat: 8:00 AM – 5:00 PM Choose Air Leaders Inc. for trusted Heating, Cooling and water heaters service from certified technicians.
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Latest review:
Install or replace thermostats- 8 Mar 2026
No problems
Mr. Heat Mechanical Inc.
Rating: 4.9 out of 5
Boiler repair specialist in Thornhill, Ontario
Best of the Best 2023
Best of Awards 2023
Mr. Heat Mechanical is HVAC-R Contractor (Heating Ventilation & Air Conditioning & Refrigeration) specializing in Sales Repair & Installation of Heating and Cooling equipment covering the Greater Toronto Area. Gas Piping for BBQ,Stove Range & Pool Heaters, Central Air Conditioning Sales & Service, Gas Furnace Sales & Service, Commercial Packaged Sales & Service, HRV & ERV Sales and Service. <a href="http://facebook.com/mrheatmechanical">Visit Our Facebook</a> <a href="http://twitter.com/mrheatmech">Visit Our Twitter</a> <a href="http://instagram.com/mrheatmech">Visit Our Instagram</a> <a href="http://blog.mrheatmechanical.com">Visit Our Blog</a>
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Latest review:
Install or renovate fireplace- 8 Dec 2024
Quick repair of gas fireplace and they did a great job. Provided contact for replacement
First Key Homes
Rating: 5 out of 5
Boiler repair specialist in Thornhill, Ontario
First Key Homes has offered a professional and innovative approach to providing our customers with the utmost quality workmanship, reliability and competitive pricing, in both interior and exterior home remodeling and renovations in the Greater Toronto Area. Our fully licensed and insured team have completed all categories of general contracting and home renovations from kitchens to baths to complete home projects. With our unique approach to working closely with our customers and our care for craftsmanship, we can ensure your dreams a reality.
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Latest review:
As a first-time home buyer, the process of purchasing a home and diving into renovations can be very stressful. However, my experience with First Key Homes for renovating my kitchen, bathroom, and flooring was truly outstanding. From the initial consultation to the final touches, Alain from First Key Homes was with me every step of the way! Their expertise and attention to detail were evident from the start, offering valuable insights and suggestions that aligned perfectly with my pinterest vision and budget. The renovation process can often be filled with unexpected challenges, but First Key Homes managed to navigate them seamlessly. Their professionalism and dedication to customer satisfaction that the project was completed on time and within the agreed budget. The transformation of my kitchen and bathroom is simply breathtaking, and the new flooring has completely refreshed the look and feel of my home. I couldn't be more pleased with my decision to work with them for my home renovations. Their service was truly amazing, and I have absolutely no regrets! I would highly recommend First Key Homes to anyone looking to renovate their home, especially first-time home buyers like myself, as they truly go above and beyond to make the renovation process a positive and rewarding experience!
Ricochet ltd
Rating: 4.9 out of 5
Boiler repair specialist in Thornhill, Ontario
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.
Smart Comfort Air
Rating: 5 out of 5
Boiler repair specialist 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
Boiler repair specialist 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!
Coral Mechanical Inc
Rating: 5 out of 5
Boiler repair specialist in Thornhill, Ontario
Best of Awards 2025
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:
Install or renovate fireplace- 16 Mar 2026
One team had dismantled an old fireplace and installed a new one. Another team decorated it with stone and helped with renovating the room. Everything was done clean and professional.
Consult Mechanical
Rating: 5 out of 5
Boiler repair specialist 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.
Fresh Flow Plumbing Inc.
Rating: 5 out of 5
Boiler repair specialist in Thornhill, Ontario
- All Plumbing Services; - 4 years experience; - Reliable, Guaranteed fair price - Brand new house & full bathroom renovation - High-quality plumbing services Your comfort and peace of mind are our top priority. Contact us today for efficient and dependable service.
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Latest review:
Install or repair bathroom fixtures- 13 Feb 2026
The technician, Hussain, is responsible, profrssional and efficient,and the repair was completed on time as scheduled. I am very satisfied with their service.
Consumers Energy Management
Rating: 5 out of 5
Boiler repair specialist 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.
Northland Heating & Air Conditioning
Rating: 4.7 out of 5
Boiler repair specialist in Thornhill, Ontario
Best of Newly Listed 2025
This family business has been around for over three decades, selling, installing, and providing services. We believe in delivering excellence and our core values centered around Integrity and respect which have been part of our company’s success since our founding in 1996. We carry most major brands but mainly deal with Lennox and we also deal with Kenmore, Goodman, York and Carrier. We specialize in Residential and commercial establishments in the GTA . Our products include packaged rooftop units, split systems, Indoor air quality systems, condensing units, fireplaces, pool heaters, Hot water tanks/Tankless and related equipments.
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Latest review:
Repair or maintain boiler- 11 Jan 2026
We chose Northland Heating and Air Conditioning because it was a local family business. Paul and Sonny came within a day of our request, and did a thorough job of cleaning and maintaining the boiler and the hot water heater. They were very helpful in making us feel comfortable, answering our questions, and gave us a sense of what to expect going forward (our boiler is old but still working well). They left the basement in immaculate condition. Northland brings a wealth of experience and knowledge. I would trust them with any work, minor or major. I am recommending them to friends and neighbours. Very reasonable price as well.
Always Spring
Rating: 5 out of 5
Boiler repair specialist 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
All Nation Comfort Inc.
Rating: 5 out of 5
Boiler repair specialist in Thornhill, Ontario
Best of Newly Listed 2025
Sales, Install, Repair & Maintenance, HVAC service Furnaces, A/C ,Hot watertank, Rooftop, Smart thermostat, Fireplace, Heat pumps & Gas Barbecue Residential & Commercial
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Latest review:
Install or replace gas systems and pipes- 5 Mar 2026
Sean was excellent. He communicated quickly and was available within a day. He spotted a potential issue with the placement of our new oven and made sure his work wouldn't be a barrier. Thanks so much for preventing a potential problem.
Hargrave Heating And Air Conditioning
Rating: 4.9 out of 5
Boiler repair specialist in Thornhill, Ontario
Best of the Best 2023
Best of Awards 2023
HARGRAVE HEATING & AIR CONDITIONING "With Hargrave, you can rest easy with our transparent and reliable service, because we care!" Providing 24/7 emergency and scheduled services to keep your home or business running comfortably. Our Licensed Experts specialize in furnace repair, air conditioning repair, and routine maintenance for all makes and models. Proudly based in Markham, Ontario, Canada, we serve York Region, Durham Region and the GTA Call us today or visit our website to experience fast, reliable service from a team that puts your comfort first.
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Latest review:
Install or replace heating systems- 22 Sep 2025
Very good. They have good technicians who know what they are doing. I did get a leak of the coolant a couple of years later due to a fault at the connection which may have been a installation issue or perhaps materials. Either way they fixed it promptly. The service program is good I would suggest the premium one with unlimited calls once the heater is a few years old. We have used that several times it's worth the additional cost for the peace of mind.