Business Details
27 Years
experience
Emergency
services
Expert HVAC Installation & Repair Services in Markham
Alliance Energy Source has been delivering superior HVAC services since 1999, specializing in residential heating and cooling system installation, repair, and maintenance. Our team of experienced technicians provides same-day service across the Greater Toronto Area, offering energy-efficient solutions like 99% efficiency furnaces, 25 SEER air conditioners, and 96% gas boilers with 10-year warranties. We prioritize customer satisfaction through transparent pricing, free estimates, and financing options while maintaining partnerships with trusted brands like Lennox.Our commitment to quality is reflected in our Homestars and Google reviews, which highlight competitive pricing, professional service, and exceptional follow-up. As a Lennox Premier Dealer, we combine industry-leading products with expert installation and rebate assistance to ensure optimal home comfort. Our service area includes York Region and Peel Region, with a dedicated team available via phone and WhatsApp for urgent HVAC needs.
Services
Furnace Installation
Air Conditioner Repair
Boiler Installation
Tankless Water Heater
HVAC Maintenance
AC Replacement
Furnace Replacement
Air Quality Solutions
Emergency HVAC Service
System Inspections
Details
- Year established: 1999
Highlights and features
- 25 years of residential HVAC expertise since 1999
- Same-day service available across Greater Toronto Area
- 10-year warranties with registration on all major systems
- Free estimates for furnace, boiler, and AC installations
- Financing options available for HVAC upgrades
Associations and certifications
- Lennox Premier Dealer
What people say
Super happy with the service
Great service and follow-up
Professional team
Best brands, price and service
Unbelievable from sales to installation
Services
Furnace Installation
We install high-efficiency furnaces up to 99% efficiency with 10-year warranties. Our certified technicians ensure proper sizing and installation for optimal performance. Same-day service available across GTA.
Air Conditioner Repair
Emergency AC repair services for cooling system failures. Our technicians diagnose and fix issues with compressors, refrigerant levels, and electrical components. Available for same-day appointments in Markham.
Boiler Installation
Professional boiler installation with 96% efficiency models and 10-year warranties. We handle gas line connections and system balancing for residential properties. Free estimates available.
Tankless Water Heater
Navien tankless water heater installations with same-day service. Energy-efficient solutions that provide continuous hot water. Includes 10-year warranty and financing options.
HVAC Maintenance
Regular maintenance plans for furnaces, ACs, and boilers. Includes filter replacement, system checks, and efficiency optimization. Helps extend equipment lifespan and maintain warranties.
Questions
What HVAC services do you offer in Markham?
We provide furnace and AC installation, repair, and maintenance, boiler services, tankless water heaters, and indoor air quality solutions across Markham and GTA.
Do you offer emergency HVAC repairs?
Yes, we provide same-day emergency HVAC services for urgent heating and cooling system failures in York Region and Peel Region.
What warranties are available?
Most installations include 10-year warranties with registration. We offer Lennox systems with industry-leading coverage and proper documentation assistance.
Are financing options available?
Yes, we offer financing for furnace, boiler, and AC replacements to qualified customers across Greater Toronto Area.
How quickly can you install a new system?
We provide same-day installation for most HVAC systems when ordered before noon, subject to technician availability in Markham and surrounding areas.
What makes you different from other HVAC companies?
As a Lennox Premier Dealer with 25+ years experience, we combine premium products with faster service, competitive pricing, and comprehensive warranties.
Videos
Reviews (7)
Ganesh Kamath
Nov 18, 2021
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I am very pleased to inform that after many estimation from reputed companies and other big stores. Alliance price is lot cheaper for latest multistage furnace. Also Mr. Mike is excellent service person with on spot take action and help beyond expectation. He is very punctual, professional and on time completion of work. I am very lucky to get him and completed work . Thanks Mr.Mike and Alliance Energy for work.
Shannon Murphy
Aug 09, 2021
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My experience with Alliance Energy Source was 5 stars plus. I received a quote from Michelle Franz promptly. Michelle was available to answer all of my questions each time I called. I needed a new air conditioner on the hottest week of the year and Alliance scheduled me in for a new A/C within 48 hours. Mike, the installer arrived precisely on time. The installation was flawless. Both Mike and Michelle were great to work with. Alliance looked after the A/C registration and provided me with a 10 year parts warranty and a 1 year labour warranty. The new A/C is working brilliantly. And, guess what
Shyamanand Singh
Jul 01, 2021
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Absolute best hvac service provider in my city. Very reasonable and reliable in products as well as in services. Technicians are friendly and honest and prices are fair for what they charge. I never felt like, I made a wrong choice in selecting the company. Thank you guys!
Akhand Singh
Jun 07, 2021
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Good service. Very fast response. The technician was efficient and smart. Good price and good handling services. Thanks brother.
Upasana Sharma
May 22, 2021
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Positive:Professionalism,Quality,Responsiveness
Excellent in services! I can always trust them in their deals, they are very fair in cost and offer great solutions. Happy to have you our HVAC maintenance partner.
Service:HVAC maintenance
Excellent in services! I can always trust them in their deals, they are very fair in cost and offer great solutions. Happy to have you our HVAC maintenance partner.
Service:HVAC maintenance
Romina Zeinali
May 21, 2021
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Positive:Professionalism,Responsiveness
Our tech was very professional and honest with his reply about our system and he suggested best option for me. One of our system's components required replacement, but he said it possible to repair and use this season, so he did it. I like their genuineness. This company is highly recommended. Thanks a lot!
Service:HVAC maintenance
Our tech was very professional and honest with his reply about our system and he suggested best option for me. One of our system's components required replacement, but he said it possible to repair and use this season, so he did it. I like their genuineness. This company is highly recommended. Thanks a lot!
Service:HVAC maintenance
Ved Prakash Sharma
May 18, 2021
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Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
This is one of best in our area to provide installation and maintenance. They are well mannered and professional in their services. I got few estimates from them and I found it genuine and reasonable compared to other. Their work were neat and clean. Personally, I am with their work. Thanks to the team. Good luck
Service:HVAC maintenance
This is one of best in our area to provide installation and maintenance. They are well mannered and professional in their services. I got few estimates from them and I found it genuine and reasonable compared to other. Their work were neat and clean. Personally, I am with their work. Thanks to the team. Good luck
Service:HVAC maintenance
