Right-sized heating
We evaluate your home and existing setup to recommend a heating approach that supports consistent room-to-room warmth — no cold spots, no oversized equipment cycling on and off.
Heating Services
Reliable Warmth for Every Canadian Winter
When temperatures drop, your heating system should feel dependable — not uncertain. From high-efficiency furnace installations to responsive repairs and preventative maintenance, our licensed team helps GTA homeowners and businesses stay comfortable with straightforward guidance and quality workmanship.
24/7 Emergency Service
Licensed & Insured
Lennox Authorized Dealer
25+ Years Experience
Heating Services
Furnace Installation
New high-efficiency gas furnace installation with full system design, ductwork assessment, and commissioning. Up to 99% AFUE Lennox systems available with factory warranty.
Furnace Repair
Fast diagnosis and repair of all furnace makes and models. Our technicians carry common parts on every truck for same-day fixes wherever possible.
Annual Maintenance
Comprehensive furnace tune-up including heat exchanger inspection, burner cleaning, filter replacement, and safety checks — before the season starts.
Emergency Heating
24/7 emergency heating service across the GTA. No heat in winter? We respond fast — day, night, weekends, and holidays.
System Upgrades
Upgrade your older furnace to a modern variable-speed Lennox system. Better comfort, quieter operation, and meaningful savings on your heating bills.
Ductwork Services
Duct cleaning, sealing, and modification to maximize your heating system efficiency and support better indoor air quality throughout the home.
Explore Other Services
Heating that works with the whole home
Build a complete winter comfort plan.
A high-efficiency furnace performs best when the system around it is considered too. During a heating consultation, Global Comfort Air can review heating capacity, airflow, humidity control and compatible smart controls to help create a warmer, more balanced home all winter long.
Humidity-aware comfort
Winter heating dries out indoor air. We can discuss how a whole-home humidifier paired with your furnace improves comfort, reduces static, and protects wood floors and furniture.
Controls that fit your routine
Compatible smart thermostats like the Lennox iComfort® S30 make it easy to manage heating schedules, set comfort zones, and monitor energy use from your phone.
25+
Years Serving the GTA
5,000+
Furnaces Installed
99%
Max AFUE Available
24/7
Emergency Response
How It Works
Our Furnace Installation Process
01
Free In-Home Assessment
A licensed technician visits your home to assess your current system, measure your heating load, and discuss your comfort goals and budget.
02
Custom System Recommendation
We present clear equipment options with pricing, efficiency ratings, and available rebates — no pressure, no upselling. You choose what works for you.
03
Professional Installation
Our factory-trained team installs your new system to manufacturer specifications, including ductwork modifications, gas connections, and electrical work.
04
Commissioning & Walkthrough
We test every component, calibrate your thermostat, and walk you through your new system — including maintenance tips and warranty details.
Don't Ignore These
Signs Your Furnace Needs Attention
Recognizing early warning signs can prevent a minor issue from becoming a costly emergency. If you notice any of the following, contact our team for a professional assessment.
Moderate
Uneven Heating Throughout Your Home
Rooms that are consistently colder than others suggest airflow problems, duct issues, or a furnace that is no longer distributing heat effectively.
Moderate
Sudden Spike in Heating Bills
A significant increase in your gas bill without a change in usage habits often indicates your furnace is working harder than it should — a sign of declining efficiency.
Urgent
Frequent Cycling On and Off
Short-cycling — where the furnace turns on and off repeatedly without completing a full heating cycle — indicates a control board, heat exchanger, or sizing issue.
Urgent
Yellow or Orange Burner Flame
A healthy gas furnace burns with a steady blue flame. A yellow or orange flame can indicate incomplete combustion and potential carbon monoxide production — call us immediately.
Monitor
Furnace Over 15 Years Old
Older furnaces lose efficiency significantly over time. If your system is approaching or past 15 years, a proactive replacement assessment can prevent an emergency breakdown in winter.
Moderate
Unusual Noises During Operation
Banging, rattling, squealing, or grinding sounds during furnace operation are not normal. These noises typically indicate mechanical wear, loose components, or ignition problems.
Not sure if your system needs attention? Call us for a free phone consultation.
905-790-9080The Upgrade Difference
Old Furnace vs. New High-Efficiency System
Feature
Older Furnace (80% AFUE)
Lennox 99% AFUE
Heating Efficiency
80% AFUE
99% AFUE
Annual Gas Cost (est.)
$1,800–$2,400
$1,100–$1,500
Noise Level
Loud cycling
Near-silent variable speed
Temperature Consistency
Hot/cold swings
Even, precise comfort
Carbon Monoxide Risk
Higher (aging exchanger)
Minimal (new sealed system)
Smart Thermostat Compatible
Limited
Full iComfort® integration
Warranty
Expired
Up to 10 years parts & labour
Save More on Your New Furnace
Available Rebates & Incentives
We help you identify and apply for every rebate and incentive you qualify for — maximizing your savings on new equipment.
Interest-free loan
Canada Greener Homes Loan
The Canada Greener Homes Grant has closed. The Canada Greener Homes Loan (interest-free, up to $40,000) may be available for qualifying retrofits. Confirm current availability with us.
Up to $1,000
Enbridge Gas Rebates
Available to Enbridge Gas customers upgrading to qualifying high-efficiency heating equipment.
Up to $2,500
Ontario Home Efficiency Rebate Plus
Provincial program for qualifying heating upgrades. Stackable with federal programs for maximum savings.
Rebate amounts and eligibility change periodically. Our team stays current on all available programs and will confirm your eligibility during your free consultation.
Book a Free Rebate ConsultationHomeowner Guidance
Year-Round Furnace Care Tips
Fall
- Schedule annual furnace tune-up in September or October
- Replace air filter before heating season begins
- Test carbon monoxide detectors and replace batteries
- Clear area around furnace of stored items
Winter
- Check and replace filter monthly during heavy use
- Keep vents and registers clear of furniture and rugs
- Monitor heating bills for unexpected increases
- Know how to reset your furnace if it stops working
Spring
- Switch furnace filter to a fresh one as heating season ends
- Schedule AC tune-up while furnace is being serviced
- Check humidifier water panel and replace if needed
- Review your heating bills to assess system efficiency
Summer
- Keep furnace area clean and unobstructed
- Consider upgrading if your furnace is 15+ years old
- Research available rebates for fall replacement planning
- Test furnace briefly before cold weather arrives
The Global Comfort Air Difference
Why GTA Homeowners Choose Global Comfort Air
Lennox Authorized Dealer Since 2003
Factory-certified technicians with direct access to the full Lennox product portfolio, genuine parts, extended warranties, and manufacturer technical support. Every installation is backed by up to 10 years of parts and labour warranty — something only authorized dealers can offer.
Proper Heating Load Calculations — Every Time
We never guess at furnace sizing. Every installation begins with a Manual J heat load calculation to ensure your new system is sized precisely for your home — not oversized, not undersized. Correct sizing means lower bills and longer equipment life.
TSSA Licensed & Fully Insured
All gas work is performed exclusively by TSSA-licensed G1 and G2 technicians. We carry comprehensive commercial general liability insurance on every job, so your property and family are fully protected from start to finish.
24/7 Emergency Heating Response
Heating emergencies do not follow business hours. Our dispatch team is available around the clock, every day of the year — including holidays — with rapid response across the entire GTA. No heat in winter? We respond fast.
Transparent, Upfront Pricing
We provide clear written quotes before any work begins. No surprise charges, no hidden fees, no pressure. You review and approve the price before our technicians pick up a single tool.
Government Rebate Assistance
Navigating Ontario Home Efficiency Rebate Plus, Enbridge Gas, and available federal programs can be complex. We stay current on every active program and help you capture every dollar you are entitled to.
Recent work
Furnace installations completed by our team
A closer look at the clean, professional furnace and water-heater installations we deliver across the GTA.
Ready to Get Started?
Contact us today for a free estimate. Our licensed technicians are available 24/7 for emergency service across the GTA.
Serving Peel · Toronto · York · Halton · Durham · Barrie
Frequently Asked Questions
How often should I service my furnace?
We recommend annual maintenance before the heating season (September–October). Regular tune-ups extend equipment life, maintain efficiency, and catch small issues before they become costly repairs.
How long does a furnace last?
A well-maintained gas furnace typically lasts 15–20 years. If your furnace is over 15 years old and requiring frequent repairs, replacement is often more cost-effective in the long run.
What AFUE rating should I look for?
In Canada, we recommend a minimum 96% AFUE furnace. Lennox's top models reach 99% AFUE — meaning 99 cents of every dollar of gas goes directly to heating your home.
Do you offer financing?
Yes — we offer flexible financing options on new Lennox equipment. Ask about our interest-free plans and government rebate programs that can significantly reduce your upfront cost.
What areas do you serve?
We serve all of the Greater Toronto Area including Mississauga, Brampton, Toronto, Vaughan, Richmond Hill, Markham, Oakville, Burlington, Ajax, Pickering, and Barrie.
Why Choose Global Comfort Air?
Serving the Greater Toronto Area since 1999, we bring factory-trained expertise, premium Lennox equipment, and a commitment to your complete satisfaction on every job.
- Up to 99% AFUE Lennox furnaces available
- All makes and models serviced — not just Lennox
- Up to 10-year parts & labour warranty on Lennox systems
- Manual J heat load calculation on every installation
- Same-day emergency service across the GTA
- Rebate paperwork handled for you
Lennox Authorized Dealer
Factory-trained technicians · Genuine parts · Full warranty
Heating Service Area — Greater Toronto Area & Beyond
TorontoMississaugaBramptonVaughanRichmond HillMarkhamOakvilleBurlingtonAjaxPickeringNewmarketAuroraBarrieEtobicokeScarboroughNorth York