From the Manufacturer
The PIRIT Water Line is for anyone who needs to use a hose in below-freezing temperatures. Depending on need, leave it plugged in 24-7 or simply plug it in only when in use. The thermostatically controlled Water Line is set to activate the heating element if the ambient temperature outside the hose is 45 degrees F or below. If left plugged in, it will never allow water to freeze inside. If left unplugged with water inside, the water will freeze. Just plug it in before use, give it a few minutes (depending on how cold it is outside) to thaw and you'll have running water again. The PIRIT Water Line is constructed with a food grade PVC accepted by the FDA for potable water. The grounded cord is approximately 6 feet in length. Certified to UL and CSA safety standards. Please note that the temperature gauge is located at the faucet end of the hose. RV users with hose attachment compartments need to be aware that the heating element may fail to activate if the compartment temperature is warmer than the outside air.
