These ETL-listed heaters keep containers warm in areas where hazardous material is present. Also known as heat blankets, they surround drums and totes to heat them up quickly. They’re also insulated with foam or fiberglass to retain heat. They have a built-in thermostat that cycles on and off to keep contents at a set temperature. There's no need to monitor these heaters—since the temperature can’t be changed, there’s no risk of tampering.

Hazardous location environmental ratings indicate whether manufacturers have included safety features in products to facilitate their safe use in a hazardous environment. Before selecting a product for a hazardous location, ensure it is rated for your environment. See About Hazardous Location Environmental Ratings.

Extend the shelf life of your diesel exhaust fluid (DEF) while storing it in cold places. Also called heat blankets, these heaters wrap around 330 gal. DEF totes to evenly warm the fluid inside. They’re insulated with foam, so they retain heat even in chilly environments. Designed for DEF totes with a built-in pump, these heaters have an extended frame to fit the pump housing and an opening for the pump equipment. Manually set the temperature with the digital keypad. A thermostat automatically turns these heaters on and off to maintain the set temperature. To prevent overheating, a resettable fuse opens if the temperature rises above the maximum heat output.

Secure these heaters with the included buckles and straps—no need for adhesive. They’re quick to unbuckle and remove once your tote is empty. Made of heavy duty vinyl, these heaters stand up to scuffs, water, and UV rays, so they last even outdoors. The vinyl is NFPA rated for flame retardance; however, you shouldn’t use these heaters near combustible gases or dust. A ground fault circuit interrupter (GFCI) is built in to their power cord to prevent electrical shocks.

Add an insulated top cover to stop heat from escaping through the top of your tote. The cover has a flap that folds down to insulate the opening for pump equipment.

Keep gas flowing even when the temperature drops—also known as heat blankets, these heaters wrap around propane tanks to safely warm liquefied gas so it can vaporize. They’re insulated with foam, so they retain heat even in chilly environments. Their built-in thermostat heats up to 90° F, then automatically adjusts the power output to keep your tank consistently warm. Because you can’t adjust the thermostat, there’s no risk of accidentally changing the set temperature. These heaters are sized to fit industry-standard propane tanks. Quickly install and remove them using the buckles or latches.

Made of heavy duty vinyl, these heaters stand up to scuffs, water, and UV rays, so they last even outdoors. The vinyl is NFPA rated for flame retardance; however, you shouldn’t use these heaters near combustible gases or dust. A GFCI is built into the power cord to prevent electrical shocks.

Keep your battery running at full power even when the temperature drops—these heaters warm batteries quickly without overheating them. They fit most automotive and marine batteries. Made from oil- and acid-resistant materials, they stand up to the harsh conditions under the hood of your vehicle. Add a timer switch to automatically turn them on and off at a set time and day.

Band heaters are best if you want to move the heater from vehicle to vehicle or only need to heat your battery every now and then. They heat faster and more evenly than sheet heaters, and they’re simpler to install—just wrap them around your installed battery. However, you have to take them off before running your vehicle, so you can’t leave them on permanently.

Keep liquid in your pipes from freezing, maintain a specific viscosity, and prevent condensation in cold areas. Also known as heat blankets, these heaters wrap around your pipe to quickly warm the contents without direct contact. Their foam insulation retains heat, so your pipes will stay warm even in drafty areas. They’re self-regulating, so they automatically adjust their heat output to account for temperature differences along the length of the heater. They output high heat for sections of pipe exposed to the cold, and low heat for a section that’s in a warmer spot. There’s no need for a separate temperature switch or controller; just plug them in and they start heating. Do not use in hazardous areas.

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.

Temporarily store and warm items—these enclosures heat the space inside them. They’re often used to keep drums and palletized items from freezing at chilly jobsites and to maintain the viscosity of materials such as resins. A thermostat automatically turns the heater on and off, so they won’t drop below or rise above the set temperature. These enclosures have a vinyl cover that insulates to help keep the space warm. When closed, the cover shields your items from dirt, rain, and snow. Open the cover on either side to access your items. These enclosures collapse for easy storage.

Enclosures with a nonadjustable thermostat keep the temperature between 90° and 110° F.

Enclosures with an adjustable thermostat have a keypad to change your set temperature.