The average price of a 30-foot length of heat tape for PVC pipe is between $30 and $45. The price varies based on the retailer and whether or not shipping and handling charges apply.
Heat tape is not an adhesive tape; the term refers to a length of cable or hose that heats water pipes to prevent them from freezing. These cables are heated via electricity, while hoses pump heated water around the outside of the pipes.
Cable-based heat tape systems can be self-regulating based on the air temperature, or they can be controlled by thermostats. Both self-contained thermostats and systems that connect to home thermostats are available.