How to Winterize Your Home in Calgary

Freezing pipes. Sky-high heating bills. Ice dams that look like they're auditioning for a horror movie.

Winter in Calgary is fun, but the winter weather doesn't mess around. And if you're not prepared, your home might suffer the consequences.

The good news? Most winterizing tasks take an afternoon and basic tools. The better news? They'll save you hundreds on utility bills and thousands on emergency repairs.

Here's how to winterize your home before the cold weather season starts, and what to do if winter causes issues anyway.

Quick Home Winterization Checklist (Save This!)

Before the first freezing temperatures hit, handle these essentials:

• Check your attic's insulation, ventilation, and sealing
• Seal gaps around windows and doors with caulk and weatherstripping
• Book a furnace inspection before techs get slammed
• Assemble your storm supplies
• Check your chimney and fireplace for safety
• Clean out your gutters to help prevent ice dams
• Check trees for branches that could fall during storms
• Remove all water from your exterior water fixtures, including hose bibbs, sprinklers, and irrigation system
• Store or cover outdoor furniture properly

Text this list to anyone buying their first home right now. They'll thank you in January.

For more tips, including what to do during cold snaps and how to deal with Chinook temperature swings, keep reading.

Insulation and Air Sealing: Best Investments for Winter Energy Efficiency

Invest in Properly Insulating Your Attic

Out of sight, out of mind. It’s no wonder attics are so easily overlooked. But be warned: a poorly insulated attic can let your precious warm air escape during a cold snap and, worse yet, cause issues with moisture and ultimately mould if there isn’t proper ventilation to handle condensation.

In addition, if your roof is forming icicles and ice dams, poor attic insulation might be the culprit. Escaping heat melts snow sitting on the roof, and the water refreezes when it runs down and hits the cold air around the eaves.

When it comes to energy efficiency, attic insulation might be your best investment. Here in Calgary, it’s possible to save enough money on your heating costs for this upgrade to pay for itself in as little as three to six years.

Insulation is measured in "R-value," with higher R-values being better at preventing heat transfer. (In both directions—this keeps your home cooler in summer, too!) In Alberta, the building code minimum is R22 for walls and R60 in ceilings below attics. Certain types of insulation can compress over time and lose effectiveness, so what your house had when it was built might not be its current R-value.

If you’re looking for a permanent winter upgrade for your home, get a few quotes for blown-in fibreglass or cellulose insulation—these types of insulation are great for adding to existing insulation and are typically the cheapest way to boost R-value. You’ll sleep better at night knowing your attic not just meets but exceeds Alberta’s standard R-value requirement.

And Don’t Overlook Air Sealing, Either

Insulating your home is a major step in the right direction, but to make the most of it, you’ll also need to think about the "building envelope"—the barriers that, among other purposes, keep your warm indoor air from touching cold outdoor air and transferring heat.

Heat travels from high concentration to low concentration, so your home's warmth naturally wants to travel outside. Insulation keeps heat from traveling directly through the walls and ceilings, but it will still escape if there are gaps or cracks where air can flow.

Ideally, a specialist can come over to pinpoint exactly where air is escaping your home using what’s known as a blower door, and then professionally seal the problem areas. That said, DIY-minded homeowners can save money by checking for drafts with incense sticks or rented thermal imaging cameras. Windy days are ideal.

Common spots for pesky air leaks include doors, windows, electrical outlets and switches, floor drains, the chimney, the attic hatch, basement rim joists, and foundation cracks. There are a bunch of products designed to address different parts of your home, such as weatherstripping, spray-foam insulation, and foam outlet gaskets, but if you’re just getting started, a caulk gun with the correct sealant can work wonders.

Tips for DIY Air Sealing:

• Be careful around hot pipes (ex. furnace vents)—they often need special sealing materials to avoid fire hazards
• Never block intentional attic ventilation—you want your attic to be cold and dry
• Dark spots in attic insulation can indicate a leak underneath
• Be prepared for indoor humidity to increase after air sealing—this can cause moisture problems in older homes that weren't designed to be airtight and need to "breathe"
• Check indoor air quality after sealing; it may trap indoor pollutants

Do you have a heat recovery ventilator (HRV)? They’re great for winter energy efficiency and improve air quality in tightly sealed homes. When you’re prepping for winter, clean or replace the filters and check that the intake and exhaust aren’t blocked (re-check after heavy snowfall).

Inside Your Home: Annual Winterizing Tasks

Insulation and air sealing are one-time, long-term investments. Here's what you should do every year when it starts getting cold:

Get Your Furnace Checked NOW

Get your heating system inspected BEFORE heating season begins. Wait too long, and every HVAC tech in Calgary will be booked solid with emergency calls from people whose heat died at 2 a.m.

A technician will check for carbon monoxide leaks, clean the system, and catch problems before they become expensive disasters. Most inspections cost $100–$150 and often include a tune-up.

Worth every dollar when it's -30 outside and your furnace is purring like a kitten.

Turn On Your Humidifier

Calgary winters are dry. Outdoor relative humidity often drops to 20% or lower. Furnaces dry out the air indoors even further.

Overly dry air can be a genuine health concern. Chapped lips and frizzy hair are the very least of it; you can also end up with respiratory issues (increasing the chances you'll catch a winter cold), eye irritation, disrupted sleep, and more.

And guess what? Your house doesn't like dry air, either. Wood shrinks and cracks, wallpaper starts peeling, electronics get damaged by static in their guts. Low humidity can even affect your heating bill; dry air feels colder than humid air.

Get a hygrometer and a humidifier. Portable humidifiers are cheap, and you can get whole-home humidifiers for convenience. For winter, you're typically aiming for 30–40% relative humidity.

That said, be prepared to adjust your indoor humidity during temperature swings. Lower humidity when it's -20°C helps prevent window condensation, which is important for preventing mould.

Flip Your Ceiling Fans to Winter Mode

Most ceiling fans have a tiny switch on the main motor housing that reverses the blade direction. Find it. Use it.

When blades spin clockwise, they push warm air sitting near your ceiling back down where you actually live. Hot air rises naturally, so you're just redirecting the heat you already paid for.

Takes 30 seconds. Saves money all winter.

Storm Preparedness: What to Keep in Stock

Calgary's municipal services have a lot of practice keeping the roads clear, but every so often, a big storm can leave people well and truly snowbound for a few days.

Here's your winter storm preparedness checklist:

• Keep a few days' worth of non-perishable food on hand
• Keep prescription medications filled
• Keep your cell phone charged (a portable power bank or solar charger wouldn't go amiss)
• Check carbon monoxide detectors and smoke detectors
• Make sure your fire extinguisher hasn't expired

You need to be prepared for power outages, too:

• Flashlights + batteries
• Battery or hand-crank radio for news updates
• Drinking water—if the electricity goes out, so does your furnace (even gas furnaces use electricity to run), so your pipes are at risk of freezing
• Extra blankets/sleeping bags for the same reason
• If you have a generator, never run it inside; carbon monoxide in an enclosed space can kill

Outside Your Home: Protect Your Investment From Prairie Winter

Get Your Chimney Inspected

Before you light that first cozy fire, call a chimney sweep. Creosote buildup causes chimney fires. Carbon monoxide leaks kill people.

This applies to any appliance burning wood, coal, oil, or gas. An inspection costs $100–$200 and might save your life.

Not dramatic. Just true.

Caulk Around Windows and Doors

Check the gaps between your window frames/exterior doors and siding. Use silicone caulk for Calgary weather. It handles our temperature swings without cracking or shrinking. Apply it on a day above 5°C for best results.

One tube covers several windows and costs less than $10. On the inside, add weatherstripping; this can often be as cheap as $5–$10 per window and $35–$90 per door, depending on the materials and your DIY know-how. The results are worth it.

Clean Your Eavestroughs Before Snow Flies

While poor attic insulation is a common culprit, clogged gutters also create ice dams. Ice dams destroy roofing. New roofing costs thousands.

Clean your gutters now while you can still feel your fingers. While you're up there, check for loose shingles. Fix them before the first snowstorm.

Hire someone if heights aren't your thing. Beats a trip to the ER.

Mow Your Leaves Instead of Raking Them

Forget raking. Run over fallen leaves with your mower instead.

The chopped leaves decompose over winter and feed your lawn nutrients. You can buy mulching blades for most mowers, but regular blades work fine if you mow a few times.

Easier than raking. Better for your grass. Done in half the time.

Speaking of your landscaping: check your trees. Wind, snow and ice can cause weaker branches to fall.

Winterize Your Outdoor Spigots and Irrigation

Before freezing temperatures arrive, be sure to prep your outdoor water fixtures—hose bibs, irrigation systems, and the like.

Start by disconnecting all of your hoses, then make sure they’re free of water and store them in a dry, protected place so they’ll last longer.

Next, you can temporarily turn off the water supply to your exterior hose bibs, open the bibs to drain any lingering water, and then keep them protected with an outdoor faucet cover. You can often get cheap and effective covers for under $10.

For underground sprinklers and irrigation systems, it’s typically best to winterize them before the end of September to be on the safe side. With the right tools, you can handle this process yourself, but many homeowners prefer to hire a pro to blow out the water using compressed air.

Store or Cover Outdoor Furniture Properly

Bring cushions inside. Small furniture can be moved to your garage if you have the space; even if it's not heated, it'll keep the snow off.

For furniture you can't move inside, buy heavy-duty covers that actually fit. Cheap covers blow off in the wind or rip apart by December. Good covers cost more but last for years.

Patio furniture isn't cheap. Protect it.

Organize Your Storage Space Now

Check your garage and basement for storage space. Can you actually fit everything you need to store?

Build shelves or buy storage modules if you're short on room. Don't forget that ceiling-mounted storage systems exist; they can work fantastically to organize garages.

Your future self will appreciate your planning.

Extra Steps If You're Leaving for the Winter

If you're leaving for an extended period in favour of warmer climes (or you're prepping a three-season cottage for the winter season), take some extra steps to properly winterize your home.

• Prevent frozen pipes by simply not having water in them. Shut off the main valve and open all the fixtures—faucets, showers, hot water heater, everything. Leave them open so you don't create a vacuum and damage your plumbing systems. You might have to consult the owner's manual to make sure your appliances and heater drain properly.
• Chimney guard screen caps both keep away snow/ice/debris buildup and keep critters from entering your nice, warm, weather-sheltered home.
• Secure external doors; install slide locks on sliding glass doors and other equivalent security locks. Motion-sensitive exterior lights are another good "any extended absence" security feature.
• Alarm systems that are either professionally monitored or send alerts to your phone are much better than ones that rely on someone being around to hear them.
• Check your home insurance. Your coverage might have requirements for how frequently someone needs to inspect the property while you’re away.

When the Deep Freeze Hits: Handle Common Winter Problems

Frozen Pipes (And How to Avoid Them)

Pipes freeze when water sits still in them during extreme cold. Homes are especially vulnerable if pipes run along exterior walls.

As water starts to freeze, you might hear banging or whistling in the pipes from partial blockages or notice reduced water pressure.

Prevention tricks:

• Open cabinet doors under sinks to let warm air circulate
• Let taps drip slightly overnight during deep freezes
• Keep your thermostat at 15°C minimum even when you're away
• Keep exposed plumbing warm by wrapping water piping in insulation
• Have a low-temperature sensor installed to warn you when pipes are at risk of freezing

Know where your main shutoff valve is BEFORE a pipe bursts. The valve is usually near where the line enters your home.

A water flow sensor can alert you to bursting water pipes, even if they're inside a wall where you wouldn't immediately notice. It's particularly convenient in smart home systems. Costs vary wildly depending on features; cheaper solutions can be found for under $100, but fancier systems with automatic water shutoff can cost upwards of $800.

If pipes freeze anyway:

Turn off the water before you start and open the taps. The most important thing right now is to avoid adding pressure. Trying to run water—even (or especially) hot water—in frozen pipes makes bursting much more likely.

Find where the pipes are frozen, if possible. Common problem areas are exterior walls and unconditioned areas like crawlspaces and attics. Exposed pipes are particularly vulnerable.

Use a hair dryer or space heater to warm the pipe slowly. If the pipe is inside the wall, you'll have to increase the temperature of the whole room. You want a SLOW thaw, not a fast one; rapid temperature changes can crack your pipes. Expect thawing to take around half an hour, and don't turn the water back on until you're confident the ice has melted.

Don't use a blowtorch unless you enjoy explaining to insurance adjusters how you started a house fire. Torches, heat guns, and other high-heat methods also run the risk of creating steam, which dramatically increases the pressure inside the pipe.

Note: sometimes, pipes don't burst exactly where the ice blockage forms. The pressure buildup behind the blockage breaks a weak point nearby. As the ice melts, watch and listen carefully for leaks.

Not sure if you have leaks afterward? Turn off every fixture in your house, then take a reading of your water meter (usually connected to your water shut-off valve). Wait half an hour and read it again. If it's changed, you've got a leak somewhere. In Calgary, most meters have a flow indicator—if there's a spinning triangle, gear, or needle, even with everything except the main shutoff valve closed, that indicates a leak.

Cover Drafty Windows With Plastic Kits

Need a quick band-aid solution for windows sucking out all your heat? Window insulation kits look terrible. But they work beautifully.

Tape the plastic sheet around your window frame, hit it with a hair dryer to shrink the plastic tight, and suddenly that drafty window acts like it's actually sealed. Costs about $3 per window.

Your heating bill will drop. Your toes will thank you. And once the weather warms back up, consider improving your home's energy efficiency with better-insulated windows.

Keep Walkways Safe From Ice

Prepare for the cold weather by stocking up on snow removal supplies. Shovels are cheap; snow blowers are convenient.

Spread ice melt or salt on sidewalks and steps before someone breaks a hip. If you're using a chemical ice-melting compound, follow the manufacturer's instructions.

Don't overdo the salt. It damages grass and plants. Just enough to prevent injuries. You should also be aware that salt stops working below -20°C, but it still provides traction like sand or kitty litter does.

Removing Snow From Your Roof

For starters: do you actually need to remove snow from your roof?

In Alberta, roofs are built to handle at least 22 pounds of snow per square foot. If we're talking about freshly fallen snow, that means most homes here could get buried in four feet of the stuff with no problem. Wet, compressed snow weighs more, but the point stands that your roof is built with our usual snow loads in mind. As long as your vents are clear, you shouldn't have problems.

What you need to be on the lookout for is ice, which is denser, heavier, and doesn't blow away on its own. It also concentrates its weight at the edges of your eaves in icicles and ice dams.

But what should you do when the snow builds up too much? Once you have about two feet of compacted snow on your roof, it's time to consider raking it off.

Some tips:

• A snow rake is a specific tool, and shouldn't be substituted. A leaf rake can yank off shingles; metal shovels, hoes, and similar tools are likely to cause damage. Many roof rakes have wheels to keep your shingles safe.
• Don't climb onto the roof. The last thing your already-stressed roof needs is the added weight, to say nothing of dangerously slippery ice and snow. If it's so urgent you're considering it, call a professional.
• Speaking of ice: don't try to rake from a ladder. It's easy to lose your balance.
• If your home is served by overhead power lines, obey the minimum safe distance from the lines.
• You don't need to scrape all the way down to the roof. You just need to reduce the snow load to safe levels.
• Raking the first few feet you can reach from the ground is typically enough to prevent ice dams. But watch out; this can sometimes result in ice dams forming higher up on the roof.
• Heated cables or tapes are good alternatives, especially for roofs that can't be raked from ground level.

If your roof consistently has trouble with ice dams, go all the way back to the top of this article—make sure your attic is properly insulated!

Keeping Your Home Warm in an Emergency

Your furnace should've been inspected already (see above). If you skipped that step and your heat dies at midnight, most furnace companies have 24-hour emergency lines, but they'll charge you emergency rates.

Try to minimize your supply runs; opening the front door lets all that still-warm air out. Got a drafty door and no weatherstripping? Roll up a towel and shove it against the gap. Not pretty or permanent, but it works until you can get proper supplies.

Dealing With Calgary's Chinooks

Calgary weather loves to mess with you. One day it's -25°C. Two days later, it's 10°C and sunny. Then back to -20°C by the weekend.

Welcome to Chinook life.

What Chinooks Do to Your Home

Those rapid temperature swings create unique problems:

Ice dams get worse. You get melting snow during the warm spell, which then freezes solid when temperatures drop again. Your eavestroughs turn into hockey rinks.

Foundations shift. The freeze-thaw cycle makes soil expand and contract. Over time, this can crack foundations and basement walls.

Condensation appears everywhere. Warm Chinook air meeting cold surfaces creates moisture inside windows, walls, and attics. Hello, mould risk.

Your furnace works overtime. Constant temperature changes make your heating system cycle on and off more frequently. More wear, higher bills.

How to Handle Chinooks

During the warm spell:

• Open windows briefly to let moisture escape and fresh air in
• Check for ice buildup in eavestroughs and knock it loose if safe
• Look for new cracks in your foundation or basement walls
• Run bathroom fans to reduce indoor humidity
• Check your drainage; make sure meltwater isn’t pooling around the foundation

When it drops again:

• Close windows and check weatherstripping
• Make sure your furnace filter isn't clogged from all that cycling
• Keep snow cleared from your foundation (it insulates but also melts during Chinooks)

Year-round Chinook prep:

• Install a dehumidifier in your basement
• Make sure your attic ventilation is solid
• Keep an eye on foundation cracks and seal them before they grow
• Consider a programmable thermostat that adjusts automatically

Chinooks are why Calgary homes need extra attention. The temperature swings are harder on houses than steady cold would be.

How to Stay Warm Without Cranking the Thermostat

Heating bills hit hard in Calgary winters. Your furnace runs constantly on the coldest days while you're wrapped in blankets, wondering if the geese have the right idea.

Try these money-saving tips before you touch the thermostat:

Kick Your Internal Body Heat Into Gear

Hot soup, tea, or coffee raises your internal temperature fast. Spicy foods work too. Once you have heat inside you, you can trap it.

If you're always cold, exercise helps. Twenty jumping jacks will warm you up more than nudging the thermostat up another degree.

Cover Your Feet

Cold feet make your whole body feel cold. Wear thick socks or slippers instead of walking around barefoot. Soak your feet in hot water while watching TV for instant relief. Works every time.

Heat escapes from everywhere on the body, but it escapes faster when you're touching cold things, so your hands and feet often feel coldest. Your fingers and toes also have comparatively high surface-area-to-volume ratios and relatively high blood flow, so they're worse at retaining heat.

Dress for Winter INSIDE Too

Don't wander around in shorts and a T-shirt when it's February in Calgary. Wear layers inside.

Pick a reasonable thermostat setting (around 20°C works for most people) and dress accordingly. Your heating bill will drop significantly.

Cook and Bake More

Your oven heats your kitchen while cooking dinner. Double benefit.

Roast chicken, bake bread, make casseroles. Enjoy warm food and warm rooms at the same time. Cozy!

Open Blinds During the Day, Close Them at Night

Let sunshine pour through windows on sunny days. Free heat.

Close blinds and curtains after sunset to keep that heat trapped inside.

Use Hot Water Bottles

Old-school? Yes. Effective? Absolutely.

Fill a hot water bottle, tuck it under blankets or against your body, and enjoy warmth without running the furnace.

Pets work too. Dogs and cats are basically furry hot water bottles. Consider relaxing your "pets on the furniture" rules if you haven't already.

How Much Money Are You Losing Through Heat Loss?

The University of Calgary ran a study mapping heat loss across the city using thermal imaging cameras mounted on planes. It was so successful that it won awards and became MyHEAT Inc.

It started when Dr. Hay, a geography professor at the university, couldn't understand why the home he'd built to be energy-efficient was constantly cold. So he used a thermal camera to track down the heat escaping from a poorly caulked window and the edges of his doors. In 2007, he was granted research funding to create a heat map of Calgary homes.

That study showed that 38,000 homes across southwest and northwest Calgary were losing a collective $4.9 million in heat loss every year. That's roughly $129 per house! Newer subdivisions were often losing MORE heat than older neighbourhoods, so be aware that newer doesn't always mean better insulated.

Today, they've mapped thermal data across 47 North American cities and 11,808 square kilometres, covering the homes of 9.5 million people. They're geared more toward city-level energy efficiency projects than individual homes or neighbourhoods at this point, but it's clear that thermal imaging is incredibly effective for pinpointing heat loss problems.

The City of Calgary is currently running a Home Energy Performance Map and EnerGuide system to assist Calgarians with home energy audits.

Prepare in Advance to Winterize Your Calgary Home

Winterizing your Calgary home takes one focused afternoon and maybe $200 in supplies. Skip it, and you'll pay thousands in emergency repairs or jacked-up utility bills.

It really does pay to have your winter safety measures in place before the winter weather season begins.