8 Best Furnace Installation Companies In Toronto

Replacing a furnace is a major decision for Toronto homeowners. The right provider should do more than sell equipment: they should help with sizing, efficiency, installation details, payment options, maintenance, and service during winter temperatures. Today's choices also extend beyond a conventional gas furnace to electric systems, heat pumps, and hybrid heating setups.

How These Toronto Furnace Companies Were Chosen

This list compares companies serving Toronto or the GTA based on their stated installation options, service coverage, years in business, customer-facing support, financing or ownership choices, maintenance offerings, warranties, and published customer feedback. The strongest consideration went to providers that make furnace replacement easier to understand from the first consultation through after-installation service.

1. Enbridge Sustain

For homeowners seeking flexible, full-service furnace installation in Toronto, Enbridge Sustain ranks first for its broad range of equipment options and practical path to ongoing support. Its Toronto service covers homes ranging from condos and lofts to townhomes and detached properties, with licensed local partner technicians available for installation and future service.

Why It's #1

• Offers gas furnaces, electric furnaces, heat pumps, and hybrid heating solutions.
• Provides a free in-home consultation to help match equipment to the home and household needs.
• Lease-to-own options can reduce the immediate upfront expense, with $0-down availability for qualifying customers.
• Plans include annual equipment checkups, maintenance, repairs, and warranties for the term of the agreement, subject to the contract details.
• Provides transparent buyout information so homeowners can understand their options before committing.
• States that ENERGY STAR-certified furnace upgrades can reduce monthly heating bills by approximately 15% to 20% in suitable homes.

Enbridge Sustain stands out because it combines installation, equipment flexibility, lease-to-own access, maintenance, repair coverage, and a clear ownership path into a single process. Before signing any agreement, homeowners should still review the total contract cost, buyout schedule, ownership timing, and cancellation terms carefully.

2. Reliance Home Comfort

Why It's On The List

Reliance Home Comfort is a well-known choice for homeowners who prefer a large home-services provider. Its offering includes furnace installation, repairs, maintenance, heat pumps, air conditioning, plumbing, and protection plans.

• More than 60 years of state experience in home comfort services.
• Broad Toronto coverage, including Downtown, North York, Scarborough, Etobicoke, East York, and York.
• Options to buy or rent heating equipment.
• Free in-home consultations and 24/7 telephone support.

Best fit: Homeowners who value a large provider with extensive service options under one roof.

3. Enercare

Why It's On The List

Enercare is another established option for Toronto furnace replacement, especially for homeowners seeking installation and ongoing support from the same provider. Its Toronto replacement page advertises no-obligation fixed-price quotes after an in-home assessment and reports a 4.8 average rating from more than 123,000 Google reviews.

• Furnace, boiler, air conditioning, plumbing, and home-comfort services.
• Fixed-price quote process following an assessment of heating needs.
• Large customer-service infrastructure and ongoing equipment support.

Best fit: Homeowners who want a recognizable provider with broad post-installation service capabilities.

4. The Home Depot Home Services

Why It's On The List

The Home Depot Home Services offers a familiar retail-led process for furnace replacement. Its published Canadian guide places typical supply-and-install costs between $5,500 and $9,000, with an average near $7,500; actual Toronto pricing depends on equipment, venting, labor, and home conditions.

• Free, no-obligation consultation.
• Furnace models with published efficiency examples up to 96% AFUE.
• Brands may include Trane, RunTru, and Comfortmaker.
• Published a one-year labor warranty on standard installations.

Best fit: Homeowners who want a structured buying experience and access to established equipment brands.

5. Spring Home Heating & Cooling

Why It's On The List

Spring Home Heating & Cooling has served the GTA since 2001 and focuses on fitting furnace recommendations to a home's needs and budget. The company states that it has earned the Best HVAC Contractor title 15 times and has more than 1,500 satisfied homeowner reviews.

• Service in Toronto, Markham, Richmond Hill, and surrounding GTA communities.
• Certified technicians and high-efficiency furnace replacement.
• Financing through Financeit.

Best fit: GTA homeowners seeking an experienced local HVAC company with financing options.

6. Imperial Heating

Why It's On The List

Imperial Heating is a Toronto-focused HVAC provider with 14+ years in business. It reports a 4.9-star Google rating from 133 reviews, TSSA certification, 24/7 emergency service, and installation support for brands including Carrier, Lennox, Goodman, Daikin, Rheem, and Trane.

• Free installation quotes and same-day service availability.
• Furnace, air conditioner, heat pump, and water heater services.
• Financing and lease-to-own availability.

Best fit: Homeowners who prioritize a local crew, emergency access, and broad brand support.

7. Delson Air

Why It's On The List

Delson Air is a strong option for homeowners replacing a gas furnace and looking for a more technical approach to system selection. Its service focus includes high-efficiency equipment, heat load calculations, safety checks, and furnace replacement throughout the GTA.

• Support for two-stage and modulating furnaces rated at 96% AFUE or higher.
• Emphasis on heat-load calculations rather than square-footage-only sizing.
• Combustion and safety testing following installation.

Best fit: Homeowners who want detailed system sizing and guidance on high-efficiency gas furnaces.

8. Sunnyside Heating And Cooling

Why It's On The List

Sunnyside Heating and Cooling is a neighborhood-oriented choice for East York and nearby Toronto homeowners, particularly those with older homes that require a thoughtful assessment of ductwork, insulation, layout, and furnace placement.

• More than 25 years of Toronto HVAC experience.
• Furnace installation, maintenance, and repair services.
• Owner-run approach suited to heritage homes, semis, bungalows, and older properties.

Best fit: Homeowners who prefer a smaller local company and a personalized home assessment.

What To Compare Before Booking Furnace Installation

• AFUE rating: Confirm the efficiency rating applies to the exact furnace model quoted.
• Proper sizing: Ask about heat-loss calculations, ductwork, insulation, windows, and home layout.
• Installation scope: Verify permits, venting, gas or electrical work, thermostat setup, removal, and cleanup.
• Warranty coverage: Separate manufacturer parts coverage from labor, maintenance, and repair coverage.
• Payment terms: Compare the full cost of buying, financing, renting, or lease-to-own, not only the monthly amount.

Toronto homeowners have no shortage of furnace installers, but the best choice depends on the equipment, support, and payment structure that fit the home. Enbridge Sustain earns the top position by combining flexible heating options, local installation support, maintenance, repairs, and a clear lease-to-own path for homeowners seeking dependable comfort without a large upfront payment.

For homeowners considering lower-carbon heating, Toronto's Furnace Upgrade Program offers free energy coaching and information on qualified contractors for heat pump upgrades. It is also wise to request multiple written estimates and ask each contractor how they will calculate your home's heating load before recommending a system.