Furnace
Installation
At Sunnyside, we know how brutal Toronto winters can be. Serving East York and surrounding Toronto neighbourhoods for over 25 years, we're a small, owner-run team built on trust, personalized service, and quality workmanship. When it’s time to replace your furnace, we don’t just install a unit - we design the right heating solution for your home.
Why choose Sunnyside for your furnace installation?
Local Expertise + Reliability
With 25 years in the Toronto HVAC business, we deeply understand what East York homes need in winter: reliable heat, efficient systems, and service that’s there when you need it most.
We’re not a big national chain, we’re your neighbours.
Tailored Solutions for Toronto Homes
Whether you live in a heritage home, a tight semi-detached, or a character-filled bungalow, we size and place your new furnace with care.
We evaluate your existing ductwork, insulation, and home layout, because a properly sized furnace doesn’t just keep you warm, it saves you money.
Transparent Pricing + Honest Advice
We take the time to explain your options so you can make the best decision for your home and budget.
We’ll walk you through installation costs, and talk honestly about trade-offs like efficiency, brand choice, and long-term value.
Licensed, Certified, and Compliant
All of our installations meet Ontario building codes and safety standards.
We work with trusted furnace brands and help you understand warranties, so your investment is protected.
That means you get consistent, high-quality workmanship and accountability.
Our furnace installation process.
We take the time to assess, install, test, and follow up - ensuring long-lasting comfort and top performance.
Free in-home consultaions
We assess your home, check your ductwork, and discuss your heating goals to provide a detailed, no-obligation quote with all costs laid out clearly.
Safe removal
We carefully decommission your old furnace, shut off gas or power, and remove the unit responsibly.
Our team will address any necessary adjustments (duct sealing, vent updates, electrical or gas line prep). Then, we install your new furnace - connecting it, setting up the thermostat, and running full safety checks.
Professional installation
We test airflow, burner operation, and safety systems (like carbon monoxide sensors). We’ll walk you through how everything works, go over maintenance, and even register your warranty if needed.
Final testing + walkthrough
Because we’re a smaller, owner-run company, we stay connected. We’ll check back to make sure you’re happy, and we’re always available for service.
Follow-up
We proudly install Lennox furnaces.
✔ High-efficiency models
✔ Extremely reliable for harsh Toronto winters
✔ Excellent for older homes with inconsistent ductwork
✔ Baked by strong manufacturer warranties
Sunnyside Heating and Air Conditioning is trained and experienced in installing and servicing Lennox heating systems, so your home stays warm, quite, and efficient for years.
Why a professional installation matters.
Efficiency + Longevity:
Furnaces that are improperly installed run less efficiently and wear out faster.
Safety
Gas lines, electrical work, and venting systems must be handled by certified experts.
Warranty Protection
Many furnace manufacturers require professional installation to keep the warranty valid.
Toronto’s older homes often come with unique challenges (tight spaces, legacy ductwork, insulation issues), we’ve seen them all, and we know how to work through them.
Local Relevancy
Want modern comfort without replacing your boiler?
Ductless and hybrid heat pumps can supplement your existing system - providing year-round heating and cooling with lower energy bills.
Frequently asked questions about furnace installation.
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Once a year, ideally in fall before heavy use.
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All the time, we specialize in older, semi-detached, and heritage Toronto homes.
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While no system is breakdown-proof, regular maintenance significantly reduces the chances of mid-winter failures.
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Yes, ask about our maintenance packages for worry-free annual service and priority scheduling.
Contact us
Whether you need a fast furnace repair or want to prevent problems with annual maintenance, Sunnyside HVAC is here to keep your East York home warm and safe all winter.
Book a repair or tune-up today.
416-573-7212 | info@sunnysideHVAC.ca