
Furnace Installation & Repair in Mississauga, Toronto & the GTA
TSSA-certified technicians available 24/7, $0 overtime fees. Same-day furnace repair and next-day installations across Toronto, Mississauga, Brampton, Vaughan, and the GTA.
Book Your Furnace Assessment Before the Fall Rush
Most GTA homeowners wait until their furnace fails in November before calling. By then, installation slots stretch to 10-14 days. Book a free in-home assessment now and same-day appointments are still available. You will know exactly what your system needs before winter arrives.
Book Free AssessmentOur Heating Services
Call before noon and we arrive the same day. Every job is quoted flat-rate before we start, and every technician is TSSA-certified.
Furnace Installation
We size every furnace with a Manual J heat load calculation before recommending a unit. Lennox, Carrier, and Goodman installed and tested in a single day.
Furnace Repair
Most calls are diagnosed and repaired on the same visit. Our trucks carry parts for common ignition, heat exchanger, and blower motor failures so you are not waiting a second day.
Furnace Replacement
When your furnace is beyond repair, we remove the old unit, install a new high-efficiency model, and handle the permit, disposal, and rebate paperwork.
Furnace Tune-Up & Maintenance
A 12-point inspection, burner cleaning, and carbon monoxide test from $149. Book each fall to catch problems before they become a cold-night emergency.
Heat Pump Installation
Cold-climate heat pumps heat and cool your home in one system, rated for operation down to -30C. We handle the Enbridge rebate application, which covers up to $10,000 of the cost.
Heat Pump Installation MississaugaFurnace Types We Install
Your home's age, insulation, and ductwork all affect which furnace type fits best. Here are the three options we install most often across the GTA.
High-Efficiency Gas Furnaces
Maximum energy savings with modulating burners and variable-speed blowers.
Standard Gas Furnaces
Reliable heating at an affordable price point for budget-conscious homeowners.
Electric Furnaces
Ideal for homes without natural gas access. Clean, quiet operation.
Our Furnace Installation Process in Mississauga & Toronto
From your first call to warm air blowing through your vents, here is exactly what to expect.
Free In-Home Assessment
A TSSA-certified technician visits your home to measure square footage, inspect ductwork, check venting, and perform a heat load calculation. This determines the exact furnace size your home needs. There is no charge and no obligation to book.
System Recommendation and Quote
We compare options across Lennox, Carrier, Goodman, and other brands at every efficiency level. You receive a written flat-rate quote with no hidden fees. We explain the trade-offs between entry-level and high-efficiency models so you can decide with confidence.
Permit Application
EcoFrost handles the permit application with the City of Toronto, Mississauga, or your municipality completely. Most GTA permits are approved within 2 to 5 business days. You never need to deal with paperwork or city offices.
Installation Day
Most furnace replacements take 4 to 8 hours from start to finish. We remove and dispose of your old unit, install the new system, connect gas lines, and test every safety control. Your home will be warm before our crew leaves.
Testing, Walkthrough, and Warranty
We run a full system test, calibrate your thermostat, and walk you through the new unit before we leave. We register your warranty and hand you written documentation of the install and coverage terms.
Furnace Installation Cost in Toronto & Mississauga
Transparent flat-rate pricing with no hidden fees. All quotes include labour, materials, permit application, and removal of your old unit.
Entry-Level
From $2,800 installed
Single-stage burner, reliable performance, ideal for budget-conscious homeowners.
Mid-Range
$4,500 to $7,000 installed
Two-stage or variable-speed blower, quieter operation, better whole-home comfort.
Premium Modulating
$7,000 to $10,000 installed
Modulating burner, maximum efficiency, whisper-quiet operation. Best long-term value.
What affects the final price?
- Home size and heating zone count
- Ductwork condition and any required modifications
- Venting type (single pipe vs. two-pipe high-efficiency)
- GTA permit fees: typically $150 to $250 (EcoFrost handles the application)
- 0% financing available for 6 months through Financeit
Why Choose EcoFrost for Your Furnace?
Consistent Comfort
High-efficiency variable-speed furnaces eliminate cold spots and maintain consistent temperature on every floor, even on the coldest Ontario nights.
Cut Heating Bills by Up to 25%
Upgrading from 80% to 96%+ AFUE can reduce your annual gas bill by 15-25%. Combined with rebates, payback is typically 3 to 5 years.
Safe & Reliable
Every EcoFrost technician is TSSA-certified and insured. Your installation meets Ontario gas code and comes with a written workmanship warranty.
Rebates Available
Heat pump installations qualify for up to $10,000 in Canada Greener Homes and Enbridge rebates. EcoFrost handles all paperwork.

Keeping GTA families warm since 2015
More Furnace Services Across the GTA
Dedicated service pages with local pricing, neighbourhood coverage, and detailed scope of work.
Furnace Replacement
New high-efficiency furnace installed same-day. Financing available, old unit removed.
Learn More →Furnace Tune-Up
12-point inspection, cleaning & safety check from $149.
Learn More →HVAC Pricing Guide
Transparent flat-rate prices for furnace repair, installation, and maintenance.
View Pricing →Government Rebates
Up to $10,000 in Enbridge and Canada Greener Homes rebates on qualifying systems.
See Rebates →What GTA Homeowners Say About Our Furnace Service
Verified Google Reviews from homeowners across the GTA.
My furnace finally went down after 22 years and this company took all my worries away. They responded immediately, came up with a plan and stuck to it, on time, professional, friendly, kind, and patient. Amazing experience at a time when I really needed help.
Susie
GTA
EcoFrost replaced our old builder-grade furnace in our Erin Mills home last winter. The technician was on time, installed everything in under 5 hours, and helped us with the permit process. The new Lennox system is incredibly quiet and our heating bills have dropped noticeably.
David K.
Mississauga
Furnace & Heating FAQs
Common questions about furnace repair, installation, and heating in the GTA.
If your furnace is over 15 years old, requires frequent repairs, or your heating bills have increased significantly, replacement is often more cost-effective. Our TSSA-certified technicians provide honest assessments with no pressure to replace when a repair will do the job.
Call us immediately if you smell gas or burning near your furnace, hear loud banging or grinding noises, notice a yellow or orange pilot light instead of blue, or if your home is not heating at all. These can indicate dangerous carbon monoxide leaks or fire hazards.
A standard furnace installation typically takes 4 to 8 hours. Our technicians aim to complete same-day installations so your home is heated before the end of the day. More complex jobs involving ductwork modifications may take longer.
A high-efficiency furnace (96%+ AFUE) extracts more heat from the same amount of gas compared to a standard model (80% AFUE). In Ontario's cold winters, upgrading to a high-efficiency unit can reduce your heating bills by 15-25% annually. Combined with Ontario energy rebates, the payback period is typically 3 to 5 years.
Yes. While we are a Lennox Certified Dealer and specialize in Lennox equipment, our TSSA-certified technicians are trained to repair and maintain all major furnace brands including Carrier, Trane, Goodman, Rheem, York, and more.
Minor furnace repairs such as igniter or thermocouple replacements typically range from $150 to $400. Major repairs like heat exchanger replacement or control board issues can range from $400 to $900. We provide upfront pricing before any work begins, with no hidden fees.
A furnace burns gas to generate heat. A heat pump moves heat from the outdoor air into your home using electricity - it does not burn fuel. Modern cold-climate heat pumps work in temperatures as low as -30C. Many Ontario homeowners use a hybrid system combining a heat pump with a gas furnace backup for maximum efficiency.
Yes. In Toronto and across Ontario, a building permit is required for new furnace installations and most replacements. All gas work must also be performed by a TSSA-licensed gas technician (G1 or G2 certified). EcoFrost handles all permit applications and TSSA inspections on your behalf - you don't need to do anything. This protects your home insurance and ensures the work is done to code.
A gas furnace typically lasts 15 to 20 years in Ontario with annual maintenance. Furnaces in older homes that run constantly during -20C winters may age faster. If your furnace is over 15 years old and experiencing frequent breakdowns, replacement is usually more cost-effective than continued repairs. EcoFrost provides honest repair-vs-replace assessments with no pressure.
TSSA stands for Technical Standards and Safety Authority. It is the provincial body in Ontario that licenses and regulates gas technicians (G1 and G2 certification), inspects gas equipment installations, and issues red tags on unsafe appliances. Any technician performing gas work on your furnace, boiler, or water heater in Ontario must hold a valid TSSA gas technician licence. EcoFrost technicians are fully TSSA certified.
Most standard 1-inch furnace filters should be replaced every 1 to 3 months during the heating season. Thicker 4-inch media filters can last 6 to 12 months. A clogged filter is the single most common cause of furnace breakdowns - it restricts airflow, causes overheating, and can damage the heat exchanger. Check your filter monthly during peak heating months (November through March).
Still have questions? Call us at (416) 835-4775.
Call (416) 835-4775Furnace Installation & Repair Across All GTA Neighbourhoods
EcoFrost serves every neighbourhood across Mississauga, from the established homes of Erin Mills and Port Credit to the newer builds in Churchill Meadows and Meadowvale. We regularly install and service furnaces in Streetsville, Cooksville, Malton, and across the entire Mississauga City Centre corridor. Whether your home was built in the 1970s or last year, our technicians know the ductwork configurations and permit requirements specific to each area.
In Brampton, our crews are on the road daily servicing homes in Bramalea, Heart Lake, Springdale, and Castlemore. Across Toronto, we cover North York, Etobicoke, Scarborough, and East York, including older homes that require venting upgrades or ductwork repairs as part of a furnace replacement. No matter where you are in the GTA, EcoFrost provides the same TSSA-certified service, flat-rate pricing, and same-day availability.
Furnace Guides for GTA Homeowners
Guides written by EcoFrost technicians with real Ontario installation experience.
Furnace vs Heat Pump Ontario 2026
Honest cost comparison, real Ontario performance data, and which system makes sense for your home.
Read the guide →GuideHow Long Does a Furnace Last in Ontario?
Average furnace lifespan, warning signs of failure, and when to repair versus replace.
Read the guide →Guide7 Signs Your Furnace Needs Repair
Warning signs GTA homeowners should not ignore before winter arrives.
Read the guide →Furnace Service Areas
Find furnace repair and installation services in your city.
Etobicoke · Scarborough · East York · North York
Erin Mills · Port Credit · Streetsville · Meadowvale
Bramalea · Springdale · Credit Valley · Heart Lake
Aldershot · Brant Hills · Tansley · Millcroft
Need Furnace Service?
Call us today for a free estimate on furnace installation, repair, or maintenance. Furnace down right now? Visit our 24/7 emergency HVAC service page.
