Business Details
27 Years
experience
Emergency
services
Expert HVAC Installation & Repair Services in Ontario
Alliance Energy Source has been serving residential clients across the Greater Toronto Area since 1999, specializing in comprehensive heating and cooling system solutions. Our team combines decades of collective experience with certified technical expertise to deliver reliable HVAC installation, repair, and maintenance services. We prioritize customer satisfaction through same-day service availability, 10-year manufacturer warranties with registration, and partnerships with premium brands like Lennox and Navien.Our technicians maintain industry-leading efficiency standards while providing transparent pricing and detailed consultation for furnace, air conditioning, boiler, and tankless water heater systems. We offer flexible financing options and free estimates to support informed decision-making for homeowners seeking energy-efficient climate control solutions.
Services
HVAC Installation
Furnace Repair
AC Replacement
Boiler Maintenance
Tankless Water Heaters
Air Quality Systems
Emergency Repairs
System Diagnostics
Warranty Registrations
Energy Audits
Details
- Year established: 1999
Highlights and features
- Certified technicians with 25+ years of combined HVAC experience
- Same-day service guaranteed for urgent heating/cooling needs
- Factory-authorized installations with 10-year parts warranties
- Financing options available for residential system upgrades
- Free energy efficiency consultations and written estimates
What people say
Lower price than all
Great follow-up response
Professional team delivery
Unbelievable sales to installation
Amazing rebate paperwork
Services
HVAC Installation
We provide professional HVAC installation services for furnaces, air conditioners, and heat pumps with same-day availability. Our certified technicians ensure proper sizing and configuration for optimal energy efficiency. All installations include 10-year manufacturer warranties when registered.
Furnace Repair
24/7 furnace repair services address heating emergencies with rapid response times across the GTA. Our technicians diagnose and fix all makes and models, prioritizing system longevity and safety compliance. Same-day parts replacements included.
Tankless Water Heaters
Specializing in Navien tankless water heater installations with free energy calculations. Our same-day service includes system flushing, venting assessments, and optimal placement planning for maximum hot water efficiency and lifespan.
AC Replacement
We offer complete AC replacement services featuring Energy Star-rated units up to 25 SEER efficiency. Our team manages old unit removal, refrigerant recovery, and electrical upgrades while ensuring proper system matching with existing furnaces.
Boiler Maintenance
Comprehensive boiler maintenance and repair services for gas and oil-fired systems up to 96% efficiency. We perform annual tune-ups, pressure checks, and combustion analysis to maintain safe, code-compliant heating in residential environments.
Questions
What HVAC services do you offer?
We provide full HVAC services including furnace and AC installation, repair, and maintenance, plus tankless water heaters and air quality systems across the GTA.
Do you offer same-day service?
Yes, we guarantee same-day emergency HVAC repairs and installations when scheduled before noon in our service areas.
What warranty options are available?
Most installations include 10-year manufacturer warranties with registration, plus lifetime labor guarantees for our workmanship.
Are financing options available?
We offer flexible financing programs with approved credit for residential HVAC upgrades and system replacements.
How quickly can you install a new system?
Most standard HVAC installations complete within one business day using our inventory of premium brand units and replacement parts.
Do you service all HVAC brands?
Our technicians service all major heating and cooling brands, though we specialize in Lennox, Navien, and Carrier equipment installations.
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