By The True North Winter team · Research-based roundup · Last updated October 2026

A burst pipe is one of the most expensive winter surprises a Canadian homeowner can get. Water damage, flooring, drywall, insurance deductibles: it adds up fast. The usual trouble spots are the same across the country: pipes in crawl spaces, unheated garages, exterior walls, mobile-home skirting, cottages, and the water line coming into a basement.

Pipe heat cables (often called heat tape) are one of the simplest DIY defences. This research-based roundup compares plug-in heat cables sold at Canadian retailers. We haven’t installed or tested these products ourselves; we’ve compared manufacturer specs, installation guides and retailer listings to help you choose.

Safety first: Heat cables are electrical products. Always follow the manufacturer’s instructions, plug into a GFCI-protected outlet, never overlap a cable on itself unless the instructions allow it, and hire a licensed electrician for anything hardwired. Damaged cables should be replaced, not repaired.

What to look for in Canada

1. Constant wattage vs. self-regulating

• Constant-wattage cables put out the same heat per metre whenever they’re on. Most plug-in retail kits (including the first four picks below) are constant wattage with a built-in thermostat that switches the cable on near freezing. Because heat output doesn’t adjust, they must not overlap and must be installed exactly as instructed.
• Self-regulating cables adjust their output along their length based on temperature. They’re typically more forgiving and are common in professional installs. They usually cost more and often need separate plugs, end seals or hardwiring.

2. Measure the pipe, not a guess

Constant-wattage kits come in fixed lengths and can’t be cut. Measure the pipe you need to protect. For straight runs, the cable length usually matches pipe length. Some instructions allow spiralling on larger pipes, which needs more cable. Follow the sizing chart for your specific product.

3. Pipe material and diameter

Check that the cable is approved for your pipe: copper, PEX, or rigid plastic. Many kits are rated for water-filled supply pipes within a stated diameter range (for example, 3/8 to 1-1/2 in.). Most are not for drain lines, roofs or gutters, which need different products.

4. Temperature rating

Canadian conditions demand a cable rated for the cold you actually get. Several picks below are rated to protect pipes down to about -40 °C/-40 °F ambient when installed with insulation.

5. Insulation over the cable

Heat cable works best with pipe insulation over it. Check the product’s instructions: some specify the type and maximum thickness (often fibreglass, not foam), plus a weatherproof wrap outdoors.

6. CSA certification

Look for CSA (or equivalent Canadian) certification on electrical products sold in Canada.

The best heat cables for frozen pipes

1. EasyHeat AHB Automatic Pipe Heating Cable: Best overall

Why it made our list: EasyHeat’s AHB line is one of the most common pre-assembled pipe heating cables in Canadian stores. It’s listed at Canadian Tire in assorted lengths, and also at RONA and Home Hardware.

Key specs (per EasyHeat product documentation):

• Pre-assembled, plug-in, 120 V; requires GFCI protection
• Constant wattage, 7 W/ft (about 23 W/m)
• Built-in thermostat turns on at about 3 °C (38 °F) and off at about 7 °C (45 °F)
• For metal or plastic water-filled supply pipes from 3/8 to 1-1/2 in. diameter
• Rated to protect pipes down to -40° ambient (with insulation as specified)
• CSA certified (per Canadian retailer listings)

Good fit if: you have a straightforward run in a crawl space, garage or mobile-home skirting and want something you can pick up locally.

Approx. price: roughly $40–$150 CAD depending on length (prices change).

2. Frost King HC Automatic Electric Heat Cable Kit: Best budget pick

Why it made our list: Frost King’s HC kits are a long-running, low-cost option and are listed on Amazon.ca, starting with the 12-foot HC12A.

Key specs (per Amazon.ca listing):

• 120 V, 7 W/ft, constant wattage
• Built-in thermostat
• Rated to protect pipes down to -40 °F
• Comes in multiple lengths (e.g., 12 ft HC12A; longer lengths available)

Good fit if: you need a short-to-medium run and want an inexpensive, easy-to-order option.

Approx. price: about $35–$40 CAD for the 12 ft kit; longer lengths cost more (prices change).

3. WarmlyYours Plug-In Pipe Heating Cable Kit: Best length range

Why it made our list: Home Depot Canada lists WarmlyYours pipe kits in a wide range of lengths, from about 0.9 m (3 ft) up to about 24 m (80 ft), which is useful for long crawl-space runs.

Key specs (per Home Depot Canada listings):

• 120 V plug-in, constant wattage (7 W/ft) with a built-in thermostat
• Lengths from 3 ft to 80 ft
• 2-year warranty

Good fit if: you have a longer run and want to buy one continuous cable instead of several short ones.

Note: WarmlyYours also sells a self-regulating professional cable, but it’s hardwired and needs separate components. That’s a job for an electrician.

Approx. price: about $55 CAD (3 ft) to $215 CAD (80 ft) at Home Depot Canada (prices change).

4. Waterline Electric Pipe Heating Cable: Best for short runs

Why it made our list: Waterline’s plug-in cables are stocked at Home Depot Canada in short lengths that suit a single problem pipe.

Key specs (per Home Depot Canada/Waterline listings):

• CSA approved
• For metal and rigid plastic pipes
• Built-in thermostat activates below about 3 °C (38 °F)
• Power indicator light
• Lengths from 3 ft to 45 ft

Good fit if: you have one short exposed pipe, such as an outdoor-wall supply line or a garage run.

Approx. price: about $35–$76 CAD depending on length (prices change).

5. Heat-Line Retro-Line: Best for wells, cottages and buried water lines

Why it made our list: Some freeze problems can’t be solved with a cable taped to the outside of a pipe. A buried line from a well or lake, for instance. Heat-Line, a Canadian manufacturer, makes Retro-Line, a factory-finished, self-regulating cable that’s installed inside the water line through a special fitting.

What to know (per Heat-Line):

• Self-regulating, in-pipe design with fittings and a plug-in power lead
• Sold through Canadian plumbing and electrical distributors rather than big-box stores; pricing is by length

Good fit if: you have a rural property, cottage or long buried line that freezes repeatedly.

Approx. price: varies by length. Request a quote from a Heat-Line dealer.

Heat cable FAQ

Can I wrap heat cable around a pipe?

Only if the instructions allow it. Many constant-wattage kits must be run straight along the pipe and must never overlap themselves, because overlapping can cause overheating. Follow the product’s specific installation diagram.

Can I cut a heat cable to length?

Not pre-assembled constant-wattage kits like those above. Buy the length that matches your pipe. Some self-regulating cables can be cut, but they require proper termination kits.

Do heat cables use a lot of electricity?

Usage depends on wattage, length and how often the thermostat calls for heat. A thermostat-controlled cable only runs when the pipe area is near freezing. Insulating the pipe over the cable helps it work less.

Can I use pipe heat cable on PEX or plastic pipe?

Many kits are approved for plastic as well as metal pipe, but read the packaging. Some require aluminium tape under the cable on plastic pipe for even heat distribution.

Should I still insulate my pipes?

Yes. Heat cable and insulation work together. Better still, fix the root cause where possible: seal drafts into the crawl space, rim joist or garage so the pipe stays warmer to begin with.

The bottom line

For most Canadian homeowners with a cold crawl space or garage pipe, a pre-assembled, thermostat-controlled cable like the EasyHeat AHB (Canadian Tire) is the easiest place to start. The Frost King HC kits are a solid budget choice on Amazon.ca, while WarmlyYours and Waterline cover long and short runs at Home Depot Canada. If you’re fighting a buried well or cottage line that freezes every year, look at an in-pipe system like Heat-Line Retro-Line and talk to a pro.

Measure carefully, plug into a GFCI outlet, insulate over the cable, and inspect it every fall before the deep freeze.