A nonadjustable thermostat turns these heaters on when the temperature drops below 38° F and turns them off when the temperature reaches 45° F. Often used to maintain liquid temperature and viscosity and provide freeze protection in pipe and tube systems, they supply the same wattage regardless of the surrounding temperature and are less prone to power surges than self-regulating heaters. To prevent burnout, they should be installed straight along pipes and tubes; they must not be overlapped or spiraled and must be in full contact with the surface being heated. All are rated for outdoor use. The plastic cable cover provides corrosion resistance and durability. Heaters have a plug with an indicator light that shows when the system has power.

Note: Only install these heaters in accessible locations; do not install them behind walls, underground, or in other difficult-to-access areas. Use fiberglass tape or heat-transfer putty to install them directly on surfaces that are free of dirt, grease, and rough edges. Do not use electrical tape, duct tape, metal bands, or wire. To prevent heat loss and protect heaters from moisture and corrosion, wrap them with fiberglass insulation.

When the ambient temperature changes, these heaters automatically adjust the heat output along the length of their cable. Also known as self-regulating heat cable, they don’t require a separate temperature switch or controller. These heaters use their full wattage for more heat when surrounding temperatures are low and reduce their wattage when temperatures are high. Heat output can simultaneously vary at multiple points along a single cable. They’re often used to maintain liquid temperature and viscosity and provide freeze protection in pipe and tube systems. All are CSA certified for pipe freeze protection and are rated for outdoor use. Heaters can overlap without creating hot spots or risking burnout. A protective rubber cover provides corrosion resistance and durability.

Heaters with a plug are also CSA certified for roof and gutter de-icing applications. The plug has an indicator light that shows when the system has power.

Note: Only install these heaters in accessible locations; do not install them behind walls, underground, or in other difficult-to-access areas. Use fiberglass tape or heat-transfer putty to install them directly on surfaces that are free of dirt, grease, and rough edges. Do not use electrical tape, duct tape, metal bands, or wire. To prevent heat loss and protect heaters from moisture and corrosion, wrap them with fiberglass insulation.

Keep the liquid inside your hose from freezing, maintain your liquid’s viscosity, and prevent condensation in chilly environments. Also known as heat blankets, these heaters wrap around your hose to warm the contents quickly without direct contact. They’re insulated with fiberglass, so they retain heat even in unheated and drafty areas. Do not use these heaters near combustible gases or dust.

Heaters with an adjustable thermostat let you fine-tune the heat output, so they’re best if there are surrounding temperature changes or you want the liquid in your line to be at a certain temperature. For instance, if a liquid needs to be at a certain temperature to mix well, you can adjust the heat output on the digital keypad as needed. These heaters automatically turn on or off to keep your hose consistently warm.

Heaters with self-regulating temperature control work well when all you need is freeze protection and to prevent condensation. Just plug them in and they start heating—no fussing with a thermostat or temperature controller. They automatically adjust the heat output to account for temperature differences along the length of the heater. For instance, if a hose runs both indoors and outdoors in the winter, these heaters will output high heat to the section that runs outdoors and less heat to the section that runs indoors.