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What size furnace should I buy?

Square FootageFurnace BTU
1,000-1,200 sq. ft. Home40,000 - 60,000 BTU
1,200-1,500 sq. ft. Home60,000 BTU
1,500-1,800 sq. ft. Home60,000 - 80,000 BTU
1,800-2,500 sq. ft. Home80,000 - 100,000 BTU
2,500-3,500 sq. ft. Home100,000 to 120,000 BTU

Essential Heating Tips for Canadian Winters: Make Your Home Winter-Ready

Canadian winters are no joke. If your home isn’t well-prepared for the freezing months, you could be left dealing with discomfort and higher energy bills. But the good news is—you can take a few smart steps now to ensure your space stays warm and welcoming when the temperatures drop.

This guide will walk you through practical heating tips to get your home ready for winter. With a little preparation, you’ll be able to enjoy cozy nights indoors, no matter how harsh the weather outside becomes.


Check Your Furnace or Heating System

Your furnace is the heart of your home’s heating system, and keeping it in top condition is essential for surviving Canadian winters. Routine maintenance ensures it performs efficiently and prevents unexpected breakdowns in the middle of a cold snap.

When to Book a Professional Inspection

The ideal time for an HVAC check-up is early fall, preferably September or October. Don’t wait for the first snow to discover your furnace isn’t working properly. A certified technician will inspect everything—filters, burners, safety controls—and advise you if repairs are needed.

They can also give you insights about your furnace’s remaining lifespan, helping you decide if it’s time to start planning for a replacement.

Warning Signs That Indicate Repairs Are Needed

Apart from professional inspections, keep an eye out for these common red flags:

  • Unusual noises like rattling, banging, or squealing.
  • Uneven heating throughout your home.
  • Rising energy bills without increased usage.
  • Furnace struggling to maintain the set temperature.
  • Yellow burner flame instead of a steady blue one.
  • Short cycling or failure to turn on.

Most furnaces last 15–20 years, but heavy use or lack of maintenance can shorten their lifespan. If you’re dealing with frequent issues and costly repairs, upgrading to a new model may be a smarter long-term move.


Why Energy-Efficient Models Are Worth It

Switching to an energy-efficient furnace can make a big difference during tough Canadian winters. To qualify for ENERGY STAR® certification in Canada (and northern U.S.), a gas furnace must achieve at least 95% Annual Fuel Utilization Efficiency (AFUE).

Benefits of upgrading include:

  • Lower monthly heating bills.
  • Reduced carbon footprint.
  • Minimal maintenance needs.
  • Improved safety and comfort.
  • Better resale value for your home.
  • Warranty coverage and modern features.

If you’re curious about savings, many providers offer online calculators to estimate how much you could reduce your heating costs with an upgrade.


Winterizing Your HVAC System

While your furnace is the star of the show, a few additional steps will help maximize heating efficiency and comfort during winter.

Replace Filters Regularly

Air filters should be replaced every 1–3 months, depending on usage and household factors:

  • Thick filters (3–4 inches) can last up to 6–9 months.
  • Homes with pets or allergy sufferers need more frequent changes.
  • Construction dust or poor air quality in your area can shorten filter life.

Clean Ducts and Vents

Duct cleaning can improve airflow and indoor air quality. On average, it costs between $250 and $500 depending on home size. While not required every season, it’s helpful if you use basic filters or don’t replace them often.

Calibrate Your Thermostat

If your rooms feel warmer or cooler than the set temperature, your thermostat may need recalibration. Ask a professional to check and adjust it to avoid short cycling and energy waste.

Cover or Protect Your AC Unit

Whether you should cover your air conditioner in winter depends on its location:

  • Cover it if exposed to falling leaves, ice, or snow.
  • Skip covering if it’s sheltered or your winters are mild.

Keep Vents Open and Clear

Blocked vents force your furnace to work harder, increasing energy use and wear. Ensure furniture, rugs, or curtains don’t obstruct airflow.


Safety Checks: Smoke and Carbon Monoxide Detectors

Your heating system works overtime in winter, making smoke alarms and CO detectors more important than ever. Unfortunately, many house fire deaths happen in homes without functioning detectors.

Stay safe by:

  • Replacing batteries every six months.
  • Testing alarms regularly to confirm they’re operational.

Maximizing Energy Efficiency to Cut Heating Costs

Heating takes up the largest portion of household energy use in Canada—almost 81% of electricity and the bulk of natural gas or propane. The good news? There are simple steps you can take to shrink that number and lower your bills.

Adding Plastic Film to Drafty Windows

Old or single-pane windows are notorious for leaking heat. A quick and inexpensive fix is applying plastic window insulation kits, which create a barrier against cold air and prevent heat from escaping.

This isn’t a long-term solution, but it’s a smart seasonal option. For something more permanent, consider:

  • Installing weather stripping to cover gaps.
  • Sealing cracks with caulking.
  • Hanging heavy or thermal curtains for added insulation.

Insulating Key Areas of the Home

A well-insulated home is far easier to keep warm. Air sealing and insulation upgrades can reduce energy costs by 10% or more. Start with the attic since most household heat escapes through the ceiling, then move on to walls, floors above unheated basements, and even exposed piping.

Main areas to insulate include:

  • Attic and ceiling spaces.
  • Exterior walls.
  • Floors above garages or crawl spaces.
  • Water pipes in colder zones of your home.

Sealing Doors and Windows

Small leaks around entry points can add up to big heat loss. Use caulking to close cracks around fixed parts (like window frames) and weather stripping for movable areas such as doors and operable windows. Since weather stripping wears out over time, inspect it each season and replace when needed.

Installing a Smart Thermostat

Smart thermostats give you precise control of your heating system and help cut unnecessary energy use. These devices connect to your phone or smart home system, letting you adjust the temperature anytime, anywhere. While most are compatible with existing furnaces, it’s best to check with your HVAC technician before buying. The initial investment typically pays itself back quickly in lower utility bills.


Backup Heating Solutions for Canadian Winters

You should never be caught without heat during a Canadian winter. Having alternative heat sources ensures you and your family stay safe in emergencies.

Options include:

  • Propane Heaters – Compact, efficient, and safe for small indoor spaces when designed for indoor use.
  • Kerosene Heaters – Effective for backup but must be used with ventilation to avoid fumes.
  • Portable Gas Fireplaces – Provide warmth and ambiance without electricity.
  • Wood Stoves – Reliable for extended outages if you have one installed.

For a more permanent solution, many homeowners are choosing hybrid systems (a heat pump paired with a furnace). The pump handles mild temperatures efficiently, while the furnace kicks in when the mercury drops.


Preparing for Unexpected Power Outages

While large-scale outages aren’t frequent in Canada, they can be uncomfortable and even dangerous. Being prepared makes a big difference:

  • Shut off gas lines if authorities advise.
  • Keep extra blankets and warm clothes handy.
  • Consider a backup generator to run your heating system.
  • Stock up on firewood if you rely on a wood stove.

Heating Mistakes to Avoid

Even with the right equipment, small errors can cost you comfort and money. Avoid these pitfalls:

  • Skipping routine furnace maintenance.
  • Blocking radiators or vents with furniture or laundry.
  • Leaving the system running at full power all day instead of using a smart schedule.
  • Cranking the thermostat higher, expecting it to heat faster (it won’t).

Comfort Hacks to Stay Cozy All Season

Canadian winters don’t have to feel unbearable. Try these extra tips for warmth and comfort:

  • Use Rugs & Carpets – They insulate cold floors and keep rooms cozier. Just remember to vacuum often to avoid dust buildup.
  • Adjust Thermostat Settings Wisely – Aim for around 20°C (68°F) when home and lower it at night or when away. Keep it at least 10–13°C (50–55°F) if leaving for long periods to prevent frozen pipes.
  • Shut Doors to Unused Rooms – Focus heating in the spaces you use most.
  • Use a Humidifier – Helps maintain indoor comfort at 30–50% humidity.
  • Improve Air Quality – HEPA purifiers and certain indoor plants can keep the air fresher.
  • Maintain Airflow – Keep interior doors open to allow consistent circulation throughout the house.

Final Thoughts: Stay Warm and Prepared

The best time for heating system inspections is early fall—before the real cold sets in. Proactive maintenance not only keeps you comfortable but also saves you from expensive breakdowns or replacements mid-winter.

If your system is already showing signs of strain, don’t wait. Book an HVAC service now and ensure your home stays safe, efficient, and warm all season long.

Hans Vaillancourt
Hans Vaillancourt
Articles: 30