How to Winterize Exposed Propane Lines?

Preparing the Line for Winter

Drain the propane line by closing the main shut-off valve and allowing the line to drain for at least 10 minutes. This will help remove any remaining propane from the line. Next, add a line heater or insulated wrap, such as a 3M Thinsulate wrap, to the exposed line. The line heater should be rated for the specific length of line being protected. A good rule of thumb is to use a heater that can maintain a temperature of at least 40°F (4°C) above the outside temperature.

Insulating and Covering the Line

In addition to a line heater or wrap, use foam covers to protect the exposed line from freezing temperatures. The foam covers should be rated for the specific temperature range and should overlap by at least 6 inches to prevent cold air from entering the line. Make sure to secure the covers with tape or a strap to prevent them from shifting in the wind. Use a minimum of 2 layers of foam covers for lines exposed to the most extreme temperatures.

Testing and Maintenance

After winterizing the line, test the system by bleeding the line and checking for leaks. Make sure to check the pressure gauge on the propane tank to ensure it is within the recommended range. Regular maintenance, such as inspecting the line for damage and checking the foam covers for wear, is essential to ensure the line remains safe and functional throughout the winter months.