How & Where to add heat to protect against pipe freezing: heat tapes, heaters, light bulbs, insulation

How to keep RV pipes and holding tanks from freezing

Living With a Heat Pump Water Heater - Energy Vanguard

3 Ways to Prevent Frozen Water Pipes - wikiHow

Everything You Need To Know About Heat Trace

Easy Heat Freeze Free 30 ft. L Cable Application Tape For Pipe - Ace Hardware

Heat Trace Solutions from Thermon

Cable installs fast and easy. Each package contains grounded plug, built-in thermostat, and instructions. Cable has weather-resistant PVC outer jacket and inner insulation. Keeps water flowing down to -40 degrees Fahrenheit. Features power indicator light, 3-wire grounded cord, and plug. 7 watts per foot, 120 volts. Approved for rigid plastic and metal pipe. UL (Underwriter's Laboratories) listed.

Easy Heat Pipe Heating Cable 3 ft.

Sunflower Electric Power Corporation

Protect a Pipe from Freezing with Pipe Heating Cable and Fiberglass Pipe Insulation