Furnace & AC Installation
High-efficiency furnace and central air conditioning systems sized, installed, and optimized for your space.
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Serving the Greater Toronto Area since 2004
Reliable heating, cooling & mechanical service you can count on.
From furnace and AC installs to complex commercial systems, Harbourline Mechanical Co. keeps Toronto comfortable with licensed technicians, honest pricing, and true 24/7 emergency response.
Licensed & fully insured
4.9/5 from 600+ reviews
Certified, accredited & brand-partner trusted
TSSA Registered
Licensed & Insured
HRAI Member
Gas Technician G2
ODP Certified
Energy Star Partner
What we do
Complete mechanical services under one roof
Whether it's a single furnace swap or a full commercial retrofit, our team delivers dependable results with the same craftsmanship every time.
Heat Pump Systems
Energy-smart cold-climate heat pumps for year-round comfort and lower utility bills, with rebate guidance.
Request this serviceCommercial HVAC Maintenance
Preventive maintenance plans and rooftop unit service that keep facilities running and downtime to a minimum.
Request this serviceDuctwork Design & Sealing
Custom ductwork, balancing, and sealing to eliminate hot and cold spots and improve system efficiency.
Request this serviceBoiler Repair & Service
Expert repair, replacement, and tune-ups for residential and commercial boilers and hydronic heating.
Request this serviceIndoor Air Quality
Air purifiers, humidifiers, HRV/ERV systems, and filtration to keep the air in your building clean and healthy.
Request this service20+
Years in business
35
Licensed & insured technicians
18,000+
Jobs completed
24/7
Emergency response
Why choose us
Toronto's trusted name in mechanical service
For two decades, homeowners, property managers, and businesses have relied on Harbourline for workmanship that lasts. We hire the best tradespeople, invest in training, and stand behind every job with a satisfaction guarantee.
Satisfaction
guaranteed
guaranteed
Locally owned
& operated
& operated
Workmanship
warranty
warranty
Licensed & TSSA-certified
Every technician is fully licensed, insured, and background-checked — so the crew in your home or facility is one you can trust.
Upfront, honest pricing
You approve a clear, itemized quote before any work begins. No surprise charges, no pressure, no gimmicks.
On-time, every time
Tight arrival windows and same-day service on most repairs keep your schedule — and your comfort — on track.
True 24/7 support
A real Harbourline dispatcher answers around the clock. When your heat or cooling fails, we respond fast.
Our story
Built on craftsmanship, grown on trust
Harbourline Mechanical Co. started in 2004 with a single van, a set of tools, and a simple promise: treat every home and building like our own. Two decades later, that promise still drives everything we do.
Today our team of 35 licensed technicians serves thousands of residential and commercial clients across the Greater Toronto Area. We've grown steadily by word of mouth — earning repeat business through honest advice, clean workmanship, and service that shows up when we say we will.
- Family-owned and rooted in the Toronto community
- Factory-trained on all major HVAC brands
- Transparent quotes and flexible financing
- Rigorous safety and quality standards on every job
What clients say
Trusted by thousands across the GTA
“Our furnace died during a January cold snap and Harbourline had a technician at our door within the hour. Professional, tidy, and fairly priced. We won't call anyone else.”
Margaret Chen
Homeowner, North York
Where we work
Proudly serving the Greater Toronto Area
Our fully-stocked service vans are dispatched across the GTA every day. If you're in or around Toronto, we've got a technician close by — ready for scheduled work or an after-hours emergency.
Greater Toronto Area
Mississauga
North York
Scarborough
Etobicoke
Vaughan
Markham
Richmond Hill
Get in touch
Request service or a free estimate
Tell us what you need and our team will get back to you promptly. For emergencies, call our 24/7 line for the fastest response.
24/7 Emergency & Dispatch(416) 555-0199Email usservice@harbourlinemechanical.ca
Shop & office248 Eastern Ave, Toronto, ON M4M 1B8
HoursMon–Fri 7am–7pm · Sat 8am–4pmEmergency service 24/7