Furnace repair and installation done right.
When your furnace fails on the coldest night of the year, you need TSSA G2-certified hands that show up fast and fix it properly. As Lennox & Ducane authorized dealers, we install high-efficiency systems backed by full manufacturer warranty, and we repair every major brand. Written workmanship guarantee on every install.
Our Furnaces Services
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Emergency Furnace Repair
24/7 response across our entire service area. Most repairs completed in a single visit, with common parts stocked on every truck. TSSA G2-licensed technicians on every call.
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New Furnace Installation
Lennox and Ducane authorized dealer — full manufacturer warranty coverage and ongoing parts support. Right-sized for your home via heat-loss calculation, not square-footage guesses.
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Annual Tune-Ups & Maintenance
Pre-winter inspection, combustion analysis, safety check, and cleaning. Catches small issues before they leave you cold. Extends equipment life and protects warranty coverage.
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Replacement & Upgrades
Right-sizing assessment, removal of the old system, and full installation with permits and inspection coordination. Old-furnace removal and recycling included.
What to Expect
- 01 Free in-home assessment and heat-loss calculation
- 02 Honest, written quote with no pressure
- 03 Professional installation by TSSA G2-certified technicians
- 04 Permits and inspection coordinated on your behalf
- 05 Workmanship guarantee plus full manufacturer warranty
Common Questions
How long does a furnace installation take?
Most residential furnace replacements take 6–8 hours from removal to startup, completed in a single day. We coordinate permits in advance so there's no delay.
What furnace brands do you install?
As Lennox and Ducane authorized dealers, we install those brands with full manufacturer warranty coverage and direct parts support. We also service and repair all major brands including Carrier, Trane, Goodman, Rheem, and Napoleon — so if you have one of those, we can keep it running, even if we wouldn't choose it for a new install.
Do you offer financing on new furnaces?
Yes — through Financeit. 0% for 6 months for qualified applicants, up to $100,000, with a decision in roughly 3 minutes. Apply through their secure portal; we handle the install paperwork on our end.
Real Reviews From
Real Customers
- 2 weeks ago
"My furnace stopped working on one of the coldest nights of the year. Air Comfort came out within a few hours and had it fixed same night. Honest pricing, no upselling — just great work. Highly recommend!"
Google Review - 1 month ago
"Had a new AC unit installed last summer. The technician was professional, clean, and finished faster than expected. Our home stayed cool all season without any issues. Will definitely call them again."
Google Review - 3 months ago
"Got a heat pump installed and the team walked me through everything — how it works, what to expect, maintenance tips. Very knowledgeable and transparent. Pricing was fair and they cleaned up after. Excellent service."
Google Review - 5 months ago
"Called for an AC tune-up before summer. The tech found a small issue and fixed it on the spot. Affordable and thorough. We've used Air Comfort for 3 years now — they're our go-to every time."
Google Review - 6 months ago
"Best HVAC company in Mississauga, period. They replaced our entire ductwork system and it made a huge difference in how evenly the house heats. On time, professional, and reasonably priced. 10/10."
Google Review - 7 months ago
"I appreciated that they took the time to explain what was wrong before starting any work. No pressure, no unnecessary repairs. Just honest, reliable service. Booked them for annual maintenance going forward."
Google Review
Let's Fix Your
Comfort Issue
Whether it's an emergency or you're planning ahead, we're ready to help. Reach out any way you prefer.
- Call or Text 416-899-7933
- Email Us info@aircomfortmechanical.ca
- Service Area Waterloo Region, Brant, Halton, Peel & GTHA
- Hours Mon–Sat 8AM–8PM · 24/7 Emergency