Since 1991, UltraHeat has been the standard holding tank heater in the RV industry, tested by independent laboratories and RV manufacturers themselves to protect down to -11 degrees Fahrenheit on totally exposed tanks. Additional insulation can extend freeze protection further.

Mount this heater beneath your RV’s floor to safeguard black, grey, and fresh-water storage tanks through harsh winter conditions. Peel-and-stick installation and automatic thermostat control make deployment simple.

• 201.6 watts, 120-volt AC operation
• 1.68 amp current draw
• Thermostat: on at 44°F, off at 64°F
• 24 inches long × 12 inches wide
• Adhesive mounting below floorboard