Preparing Your Calgary Home for Winter: A Fall Maintenance Guide
Get your Calgary home ready for winter with this practical fall maintenance guide. From furnace checks to insulation and exterior prep, here is everything you need to do before the cold hits.
Calgary winters do not ease in gradually. One week it is plus 15 and you are still wearing a t-shirt, and the next week it is minus 25 and you are wondering if you left a window open somewhere. The homes that handle winter best are the ones that were prepared in the fall. After inspecting homes across Calgary and area for years, I have seen what happens when homeowners skip fall maintenance, and I have seen how a few hours of prep in October or November can save you thousands of dollars and a lot of stress in January.
Here is my fall maintenance guide, organized by priority. Start with the items that protect your home from the most damage, and work your way down the list.
Heating System
Furnace Service
Your furnace is about to work harder than any other system in your home for the next five or six months. Book a professional tune-up before the heating season starts. A technician will clean the burners, check the heat exchanger for cracks, test the ignition system, inspect the flue, and make sure everything is running safely and efficiently.
A cracked heat exchanger is one of the most dangerous things I find during inspections. It can leak carbon monoxide into your home, and you would not know it without a detector. Health Canada’s carbon monoxide prevention guidance recommends an annual professional inspection of every fuel-burning appliance for exactly this reason — catching cracks and combustion issues before they become a threat.
While you are at it, replace the furnace filter. If you use standard one-inch filters, replace them every one to three months through the winter. If you have a thicker media filter, check the manufacturer’s recommendation, usually every six to twelve months.
Carbon Monoxide Detectors
Test every CO detector in your home. If they are battery-operated, replace the batteries. If they are more than seven years old, replace the entire unit. Carbon monoxide is colourless and odourless, and the risk increases in winter when the furnace and other gas appliances are running constantly and the house is sealed up tight.
Thermostat
If you have a programmable thermostat, set your winter schedule. Lowering the temperature a few degrees at night and when you are away saves real money over a full heating season. If your thermostat is old and manual, consider upgrading. It is one of the cheapest improvements you can make with a real return.
Insulation and Air Sealing
Attic Insulation
If your heating bills have been climbing, your attic is one of the first places to check. In Calgary, you want at least R-50 insulation in the attic (about 16 inches of blown-in cellulose or fiberglass). Natural Resources Canada’s Keeping the Heat In guide is the standard reference on attic and wall insulation for Canadian homes, and it’s worth skimming before you commit to a retrofit. I see homes regularly where the insulation has been compressed, shifted, or was never adequate to begin with.
A thermal imaging inspection is one of the best ways to identify heat loss. During cold weather, a thermal camera can show exactly where warm air is escaping, whether it is through the attic, walls, windows, or other gaps. I have found entire wall cavities with zero insulation using thermal imaging. Knowing where the heat loss is lets you fix the right areas instead of guessing.
Weather Stripping
Check the weather stripping around all exterior doors. Close the door on a piece of paper. If you can pull the paper out easily, the seal is not tight enough. Replacing weather stripping is cheap, usually under $20 per door, and it makes a noticeable difference in comfort and energy costs.
Caulking
Inspect the exterior caulking around windows, doors, and any penetrations through the exterior walls (pipes, vents, cables). Caulking in Calgary takes a beating from our temperature swings and typically needs reapplication every three to five years. Gaps in caulking let cold air in and warm air out, and they also allow moisture to enter the wall cavity, which leads to much bigger problems.
Plumbing
Exterior Faucets
This is a critical one that a lot of homeowners forget. Disconnect all garden hoses from exterior faucets. If your hose bibs are not the frost-free type, shut off the interior valve that supplies them and drain the remaining water from the exterior faucet. A frozen hose bib can crack the pipe inside the wall, and you will not discover the damage until spring when you turn the water back on and it floods the wall cavity.
Interior Pipes
If you have any plumbing that runs through unheated spaces like a garage, crawlspace, or exterior wall, insulate those pipes with foam pipe insulation. In extreme cold snaps, even a well-insulated home can have vulnerable pipes. Knowing where your main water shut-off valve is can save you from a lot of damage if a pipe does freeze and burst.
Water Heater
Check the age and condition of your water heater. The average lifespan in Calgary is eight to twelve years. If yours is getting close, fall is a good time to start researching replacements. You do not want to deal with a water heater failure in the middle of January.
Exterior
Roof and Gutters
Get your gutters cleaned out before the first freeze. Clogged gutters lead to ice dams, which force water back under your shingles and into your home. Make sure downspouts are clear and directing water well away from the foundation.
Do a visual roof check from the ground. Look for damaged, curled, or missing shingles. If your roof took hail damage last summer and you have not had it repaired, get it done before winter. Damaged shingles plus ice and snow equals leaks.
Grading
Check the grading around your foundation one more time before the ground freezes. Soil settles over the course of the year, and you want to make sure water will drain away from your home during any mid-winter thaws or early spring melt.
Sump Pump
If you have a sump pump, test it by pouring a bucket of water into the pit. Make sure it activates and pumps the water out through the discharge line. Check that the discharge line is clear and draining away from the house. Consider a battery backup if you do not already have one. Power outages during winter storms happen, and that is exactly when you need your sump pump most.
Windows and Doors
Close and lock all your windows. This is not just for security. The locking mechanism pulls the sash tight against the weather stripping, creating a better seal. Make a note of any windows with failed seals (fog between the panes) or obvious drafts. These should be prioritized for repair or replacement.
If you have storm windows, install them. If you have older single-pane windows, even interior window insulation film can make a meaningful difference. It is not a permanent solution, but it helps.
Emergency Preparedness
Calgary winters can bring extreme cold snaps, heavy snowfall, and power outages. A basic emergency kit should include:
- Flashlights and extra batteries
- Blankets or sleeping bags
- A battery-powered or hand-crank radio
- Non-perishable food and water for at least 72 hours
- A first aid kit
- Candles and matches (use with caution)
Know where your main water shut-off, gas shut-off, and electrical panel are. If a pipe bursts or you smell gas, you need to be able to act fast without searching.
For Homeowners in Airdrie and Surrounding Communities
If you live north of Calgary in Airdrie, or in other surrounding communities, a few of these items are even more important. Wind exposure tends to be greater in communities outside the city, which means more heat loss through walls and attics, more stress on roofing materials, and more vulnerability to wind-driven snow entering through gaps.
If you are thinking about having an emergency inspection done to assess a specific concern before winter, do not wait until the problem gets worse. Catching issues in the fall is always easier and cheaper than dealing with them in the dead of winter.
Get Ahead of Winter
If you would rather have a professional walk through your home and identify what needs attention before winter hits, that is exactly what I do. A thermal imaging inspection can pinpoint missing insulation, air leaks, and moisture issues before they turn into expensive winter problems. Give me a call at (403) 861-7100 or reach out online to schedule one. I will help you prioritize what matters most so you can stay warm and worry-free all winter long.
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