Heat tapes look like electrical extension cords. The heat tape that most homeowners use comes in stock lengths, like extension cords, that run from a few feet long to almost 100 feet. You plug one end of the tape into an outlet and spiral-wrap the rest around a pipe.Click to see full answer. In this manner, how long can you leave heat tape on?Speaking of replacing, heat tape only has a 3-year lifespan. Most heat tape manufacturers warn that you should replace your heat tapes every 3 years minimum. Heat tape has a near-constant connection with both water and electricity and usually isn’t protected well from the elements.Similarly, how does heat tape work on pipes? Heat tape is a type of electric heater cord that’s protected from the elements. When put in place, such as in pipes and gutters, it works to generate just enough heat to keep water from freezing. The roof heat cable is placed in key areas of concern. Similarly, you may ask, is heat tape a fire hazard? Not all heat tapes are created equal and most present a potential fire hazard if they are not installed and used according to the instructions. Most cheap heat tapes can’t be overlapped or insulated because they overheat and pose a real risk for fire. Heat tapes must be plugged into a GFCI circuit.How warm does heat tape get? Heating Tape, Heating Cable, Heating Cords: At a Glance Higher power densities and temperatures, ranging from tapes with a maximum of 305° up to very-high-temperature tapes rated for up to 1400°F (760°C).