How to Lower Your Heating Bills This Winter

Start With Your Thermostat: The Free Win

The cheapest way to lower a heating bill is to ask your furnace to work less, and that starts at the thermostat. As a rough guide, every degree you lower the setpoint over a full heating season trims roughly 1 to 3 percent off space-heating costs, so the difference between 22°C and 20°C adds up quickly across a long Canadian winter.

The bigger lever is setbacks. Drop the temperature 4 to 6°C while you sleep and while the house is empty during the workday. In a typical home you can cut several percent off your annual heating use with disciplined setbacks alone, with zero hardware to buy.

One caveat for our climate: in deep cold, do not crank the thermostat way up to 'reheat faster.' Your furnace heats at the same rate regardless of how high you set it, and overshooting just wastes gas. If you have a heat pump as your primary heat, use small setbacks instead of deep ones so the system does not lean on expensive backup heat to recover.

• Daytime occupied: 20°C is a comfortable, efficient target
• Sleeping or away: set back to 16-17°C
• Avoid frequent manual overrides, which defeat the savings

Seal and Insulate: Stop Paying to Heat the Outdoors

A furnace can only ever be as efficient as the envelope around it. Air leakage around windows, doors, rim joists, attic hatches, and electrical penetrations lets warm air escape and cold air pour in, and in older Canadian housing stock this is often the single largest source of waste.

Air sealing is high-value because it is cheap. A few tubes of caulk, weatherstripping for doors, foam gaskets behind outlet covers, and rope caulk on drafty windows are an afternoon's work for well under $100, and they pay for themselves the same winter. Topping up attic insulation to current recommended levels is the next step up and one of the best-returning home upgrades in cold provinces.

If you want to find leaks precisely, many provinces offer subsidized home energy assessments where a certified advisor runs a blower-door test. Those assessments are also the gateway to most rebate programs, so booking one early is worth the modest fee.

• Weatherstrip exterior doors and the attic hatch
• Caulk window and door trim, plumbing, and wiring penetrations
• Add foam gaskets behind outlet and switch plates on exterior walls
• Top up attic insulation, the highest-leverage insulation upgrade in cold climates

Maintenance That Actually Moves the Needle

A dirty or neglected furnace burns more fuel to deliver the same heat, and a clogged filter is the most common culprit. A restricted filter starves the blower for air, which makes the system run longer, raises your electricity use, and can trip the high-limit switch. Check it monthly and replace it every 1 to 3 months during heating season.

Keep supply and return registers clear of furniture and rugs so air can circulate, and vacuum the return grille. Once a year, have the system professionally inspected: a technician will check the heat exchanger, clean the burners, verify gas pressure and combustion, and confirm the flue is drafting safely. That last point is about safety as much as savings, since a poorly tuned gas furnace can produce carbon monoxide.

If your furnace is short-cycling, struggling on the coldest days, or your bills are climbing despite good habits, those are signs to dig deeper. Use our monthly cost calculator to benchmark what your current system should cost to run so you can spot a problem early.

• Replace filters every 1-3 months in winter
• Book one professional tune-up per heating season
• Keep all registers and return grilles unobstructed

Smart Controls and Zoning

A programmable or smart thermostat automates the setbacks most of us forget to do manually. Smart models add geofencing that lowers the temperature when your phone leaves home, learning schedules, and energy reports that show exactly when you are spending money. Several Canadian utilities and provincial programs offer rebates that bring the net cost of a smart thermostat down significantly.

Zoning takes it further by heating only the rooms you are using. With a multi-zone setup or smart vents, you can keep bedrooms cooler during the day and the main floor cooler overnight rather than conditioning the whole house to one temperature. Zoning pairs especially well with two-stage and variable-speed furnaces, which can throttle output to match a smaller zone instead of blasting full heat and shutting off.

If you are pairing new controls with a new furnace, look at variable-speed and two-stage models, which run longer at lower output for steadier temperatures and lower electricity draw from the blower.

Upgrade to High-Efficiency Heating

If your furnace is 15 to 20 years old, it is probably a mid-efficiency unit in the 78-85% AFUE range, meaning 15-22 cents of every fuel dollar goes up the flue. A modern condensing furnace rated 95-98% AFUE captures far more of that heat. Switching from an 80% to a 96% furnace can cut the fuel portion of your heating bill by roughly 15-20%, and the gain is largest in cold provinces with long, expensive heating seasons.

Equipment plus installation for a high-efficiency gas furnace in Canada typically runs about $4,500 to $8,000 installed depending on size, brand, venting changes, and region, with complex retrofits costing more. A cold-climate heat pump, increasingly common in BC and Ontario, is a higher upfront cost but can dramatically cut heating bills where electricity is cheap relative to gas. Run the numbers for your home with our efficiency savings calculator and replacement cost calculator before you commit.

Buying right matters as much as buying efficient. An oversized furnace short-cycles and wastes fuel, so insist on a proper heat-loss (Manual J) calculation rather than 'matching the old one.' Our furnace size calculator gives you a sanity-check figure to discuss with installers.

• Look for 95% AFUE or higher on gas furnaces
• Prioritize correct sizing over the biggest unit
• Compare gas vs. cold-climate heat pump based on your local fuel prices

Tap Into Canadian Rebates and Provincial Programs

Rebates can offset a large share of an efficiency upgrade, so check what is available before you buy. Programs change and vary by province, so confirm current details directly with the program before counting on a dollar figure.

In British Columbia, CleanBC and utility programs through BC Hydro and FortisBC offer rebates for heat pumps, smart thermostats, and insulation. In Ontario, the Home Renovation Savings (Save on Energy) program supports heat pumps, insulation, and air sealing, and Enbridge has run gas-side efficiency incentives. Alberta homeowners should check current municipal and utility offers, which fluctuate more than in BC or Ontario.

Most of the larger rebates require a pre- and post-upgrade home energy assessment by a registered advisor, and they often require professional installation by a licensed contractor. Sequence matters: book the assessment first so you do not disqualify yourself from the rebate by installing too early.

• BC: CleanBC, BC Hydro, FortisBC heat pump and thermostat rebates
• Ontario: Home Renovation Savings (Save on Energy), Enbridge incentives
• Always verify current rebate amounts and eligibility before purchasing

Build a Plan That Fits Your Budget

You do not have to do everything at once. Stack the free and cheap wins first, thermostat discipline, filter changes, and air sealing, since they cost little and start saving immediately. Add a smart thermostat and an attic insulation top-up next, ideally with a rebate, then plan the furnace or heat pump upgrade for when your equipment is near end of life.

When it is time for new equipment, get multiple quotes so you can compare price, sizing logic, and warranty rather than just the bottom line. If the upfront cost is the barrier, financing can spread an efficient system over its payback period so monthly savings help cover the payment.

Ready to act? Compare furnace models and brands, then request quotes from local installers to see real numbers for your home and climate.