Edmonton winters are not gentle on plumbing. When temperatures drop to -20C or colder, which happens routinely from November through March, the pipes in your home are at real risk of freezing. Pipes that run through exterior walls, unheated crawl spaces, attached garages, and areas near hose bibs are the most vulnerable. The result ranges from a temporary loss of water flow to a burst pipe emergency that can flood your basement and cause thousands of dollars in water damage.

This guide covers everything Edmonton homeowners need to know: how to spot frozen pipes before they burst, how to thaw them safely, how to protect vulnerable spots before winter hits, and what to do in a burst pipe emergency. These are the most common situations the Always Plumbing & Heating team responds to every winter, and the prevention steps here can save you from ever needing to make that call.

How to Tell if Your Pipes Are Frozen

Frozen pipes do not always announce themselves loudly. Catching them early gives you the best chance of thawing without a burst. Watch for these signs after any night where temperatures fall below -10C:

Reduced or No Water Flow

Turn on a faucet and only a trickle comes out, or nothing at all. This is the most common early sign. If only one faucet is affected, the freeze is likely isolated to that supply line. If multiple faucets have low pressure, the problem is closer to the main line or in a shared section of the system.

Frost or Condensation on Exposed Pipes

Inspect pipes under sinks, in your utility room, and along exterior walls. Frost on the outside of a pipe is a clear sign the water inside has frozen or is close to it.

A Bulge or Deformation in the Pipe

Ice expansion puts enormous pressure on pipe walls. A visible bulge is a sign the pipe has already been stressed and is at high risk of bursting. Do not attempt to thaw a visibly deformed pipe yourself. Turn off the water supply and call a plumber.

No Water from Hose Bibs in Spring

One of the most common situations Always Plumbing & Heating sees every spring is a hose bib that was not properly shut off before winter. When you reconnect your garden hose in spring and there is no water, or water starts leaking into your basement, the hose bib has likely already cracked during the freeze. Inspect hose bibs as soon as temperatures rise consistently above zero.

Toilets That Do Not Refill After Flushing

If a toilet tank will not refill, the supply line feeding it may be frozen. Check the small braided hose connecting the toilet tank to the wall shutoff valve. In cold bathrooms or those on exterior walls, this line can freeze independently of the rest of the house.

How to Thaw Frozen Pipes Safely

Speed matters. The longer a pipe stays frozen, the more pressure builds inside and the higher the risk of a burst. Act immediately when you suspect a freeze, but do it carefully. Thawing too fast creates its own risks.

Step 1: Turn Off the Water Supply

Before applying any heat, locate and close the shutoff valve for the affected line, or the main shutoff if you cannot isolate the frozen section. This prevents water from rushing through the pipe the moment it thaws, which can cause pressure spikes if there is any damage further down the line. If you do not know where your main shutoff is, find it before you need it.

Step 2: Open the Affected Faucet

Turn on the faucet at the end of the frozen line, both hot and cold sides. Leaving it open relieves pressure as the ice melts and lets you confirm when thawing is complete. Running water, even a trickle, also helps accelerate the process from the faucet end.

Step 3: Locate the Frozen Section

Start from the faucet and work back toward the wall or the area where the pipe is most exposed to cold. Frost on the exterior, reduced insulation, pipes near exterior walls or in unheated spaces are the most common freeze points. If the frozen section is behind a wall or otherwise inaccessible, stop and call a plumber rather than guessing.

Step 4: Apply Gentle, Controlled Heat

Work from the faucet end of the frozen section toward the coldest point, not from the middle outward. Safe heat sources include:

• Electric heating pad wrapped around the pipe

• Hair dryer on a low to medium setting

• Electric heat lamp positioned 30 to 40 cm from the pipe

• Hot wet towels wrapped around the pipe and replaced as they cool

Do not use open flame. Torches, heat guns, and propane heaters have caused house fires during DIY pipe thawing and can damage the pipe itself. Never use electric heating elements in contact with standing water.

Step 5: Restore Water Slowly and Inspect

Once water flows freely from the open faucet, slowly reopen the shutoff valve. Watch for drips, wet spots on walls, or water staining that was not there before. These are signs the pipe sustained damage during the freeze that was not visible until water pressure was restored. If you see any of these, close the shutoff again and call Always Plumbing & Heating.

How to Prevent Frozen Pipes in Edmonton

Prevention is far less expensive than repairs. Most frozen pipe calls that Always Plumbing & Heating responds to every winter are situations that could have been avoided with a few fall preparation steps.

Never Turn Your Furnace Off

Keep your home heated to at least 15C at all times, even when you travel. The majority of furnace failures occur during extreme cold snaps, precisely the conditions that also cause frozen pipes. A smart thermostat that sends alerts to your phone if the temperature drops below a set threshold is a worthwhile investment for any Edmonton homeowner, particularly during extended absences.

Insulate Pipes in Vulnerable Locations

Any pipe running along an exterior wall, through an unheated crawl space, or in an attached garage should be insulated before the cold season. Foam pipe insulation is inexpensive and installs in minutes. Wrap it around the full length of the exposed pipe and secure it with duct tape or purpose-made adhesive.

Shut Off and Drain Hose Bibs Every Fall

This is one of the most commonly skipped steps and one of the most important. Before the first hard freeze, locate the interior shutoff valve for each hose bib, close it, then go outside and open the bib to drain any remaining water from the line. Disconnect and store garden hoses so they cannot hold water against the bib. Frost-proof hose bibs are available as a permanent upgrade if yours freeze repeatedly.

Open Cabinet Doors During Cold Snaps

The pipes under kitchen and bathroom sinks on exterior walls benefit from the heat inside the home. During extreme cold warnings, open those cabinet doors to let warm air circulate around the pipes.

Let Faucets Drip Overnight

On nights when temperatures are forecast to reach -20C or colder, let cold-side faucets on exterior walls drip slowly. Moving water resists freezing. This is a particularly useful precaution for faucets connected to pipes that have frozen before.

Know Where Your Main Water Shutoff Is

Every Edmonton homeowner should know exactly where the main water shutoff is located and confirm it turns off completely. In a burst pipe emergency, every minute matters. If you do not know where yours is, check your property inspection report or call a plumber to walk you through it before you need it in a crisis.

Prepare Before You Travel

Before leaving for a winter vacation, have someone check on your home every couple of days, or install a smart thermostat with temperature alerts. Keep the heat on, shut off the main water supply if you will be away for more than a week, and drain the lines by opening faucets after closing the main. Do not rely on a neighbor casually checking in without a clear plan for what to do if something goes wrong.

What to Do If a Pipe Bursts

A burst pipe is a plumbing emergency. Water damage spreads fast and the cost compounds the longer the source is active. If you discover a burst pipe:

1. Turn off the main water supply immediately. Do not delay to assess the damage first.

2. Turn off the electricity to any areas where water is present or spreading. Do not touch electrical panels, outlets, or appliances in flooded areas.

3. Open faucets throughout the house to drain remaining water from the system and reduce pressure.

4. Document the damage with photos before cleanup begins.

5. Call Always Plumbing & Heating at 780-489-8118. We provide 24/7 emergency service throughout Edmonton and the surrounding area.

6. Begin removing standing water and wet materials as quickly as possible to limit secondary damage and mold risk.

Burst pipe repairs cannot wait. Even after the visible water is cleaned up, moisture inside walls, floors, and insulation creates mold and structural damage within 24 to 48 hours. A licensed plumber needs to assess the pipe, complete the repair, and confirm no other sections of the system were compromised before you restore water to the home.

Frequently Asked Questions

At what temperature do pipes freeze in Edmonton?

Pipes typically begin to freeze when the temperature inside unheated spaces drops below -6C. In Edmonton's climate, exterior walls, crawl spaces, and garages can reach those temperatures even when the indoor thermostat is set at a comfortable level. During extreme cold warnings with wind chill values of -40 or colder, pipes can freeze within hours.

Does a frozen pipe always burst?

No. A frozen pipe does not automatically burst, but the risk increases the longer it stays frozen. The pressure buildup from expanding ice inside the pipe is what causes bursting, and that takes time. Pipes are most likely to burst during rapid freeze-thaw cycles, or when thawing is done too quickly. If you catch a freeze early and thaw it properly, you can avoid a burst in most cases.

Can I use a heat gun or propane torch to thaw frozen pipes?

No. Open flame and high-heat tools like heat guns and propane torches are fire hazards and can damage or warp pipe material. Use a hair dryer, electric heating pad, heat lamp, or hot wet towels. Keep heat sources dry and away from any moisture.

What pipes are most at risk in Edmonton homes?

The highest-risk locations are: pipes along exterior walls, hose bibs and their supply lines, pipes in unheated crawl spaces or attached garages, supply lines in cabinets against exterior walls, and any pipe in a room that lost heat due to a furnace failure. Older homes with less insulation have elevated risk across all of these locations.

Should I drain my pipes if I travel in winter?

If you will be away for more than a week, yes. Turn off the main water supply, then open faucets throughout the house to drain standing water from the lines. This eliminates the risk of frozen or burst pipes entirely while you are away. Keep the furnace set to at least 15C regardless, as this also protects your home from other cold-related issues.

How much does a burst pipe repair cost?

The pipe repair itself is usually straightforward, but the total cost depends on the extent of water damage. A small pipe repair can be completed in a single service call, but water damage remediation, drywall replacement, and mold treatment can run into thousands of dollars if the burst went undetected for any length of time. The most cost-effective approach is prevention, followed by fast action if a freeze is caught early.

Frozen or Burst Pipe in Edmonton? Call Always Plumbing & Heating.

Always Plumbing & Heating provides 24/7 emergency plumbing service throughout Edmonton and the surrounding area. Whether you are dealing with a frozen pipe that needs careful thawing or a burst pipe emergency that cannot wait, our licensed plumbers are available any time of day or night. Every job comes with upfront pricing and a 100% satisfaction guarantee.

Call 780-489-8118 or book with us online!