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Homeowner guide
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Heating and cooling systems work hard through Niagara's cold winters and humid summers. Regular maintenance helps them run efficiently and reliably.
Gas appliances in Ontario fall under the Technical Standards and Safety Authority, so make sure gas work is done by a certified technician.
Frequently asked questions about Contractors
How often should a furnace and air conditioner be serviced?
Many manufacturers recommend annual professional maintenance — often the furnace in fall and the air conditioner in spring — and some warranties require it. Between visits, check and replace your furnace filter regularly, keep the outdoor unit clear of leaves and debris, and keep vents unobstructed. Check your equipment manual for the manufacturer's specific schedule.
How long does a furnace typically last?
Furnace lifespan depends on the equipment quality, how well it was installed and sized, how consistently it's been maintained, and how hard it's worked. Rather than relying on age alone, watch for rising repair frequency, uneven heating, unusual noises and climbing energy bills. A technician can assess the condition during regular maintenance.
How do I know whether to repair or replace my furnace?
Repair usually makes sense for a newer system with an isolated problem. Replacement is worth considering when repairs are frequent or expensive, parts are hard to find, efficiency is poor, or the home has comfort issues the current system can't solve. Ask your technician for both options in writing so you can compare the cost of repair against the long-term value of a new system.
How much does a new HVAC system typically cost in Ontario?
Costs depend on the type of system (furnace, air conditioner, heat pump or combination), its size and efficiency rating, ductwork changes, electrical or gas work, and installation complexity. Rebate programs may be available from time to time. Because every home and scope is different, the only reliable number is a written quote. Ask two or three local businesses to visit and quote the same scope so you can compare like for like.
What size furnace or air conditioner does my home need?
Correct sizing depends on your home's square footage, insulation, windows, air tightness, layout and local climate — not just the size of the old unit. An oversized system can short-cycle and an undersized one may struggle on extreme days. Ask contractors whether they perform a heat-loss/heat-gain calculation before recommending equipment.
What should I look for when choosing an HVAC contractor?
Look for technicians certified for the work involved — in Ontario, gas and other fuels work must be done by a TSSA-registered fuels contractor, which you can verify with TSSA's online lookup. Ask whether they calculate system sizing, what brands they install and why, what the equipment and labour warranties cover, and whether they offer maintenance plans. Get a written quote that lists the exact model numbers.
Source: TSSA — Consumer safety & registered fuels contractors
This information is general guidance for homeowners. Requirements and pricing vary — always confirm details with a qualified professional and your local municipality.