<p> Expansion caused by freezing water will damage the barrel. The easiest way to prevent this damage is to drain and disconnect the system in advance of [[Winter#Freezing and Expansion|freezing temperatures]][http://climate.weather.gc.ca/climate_normals/].</p> | <p> Expansion caused by freezing water will damage the barrel. The easiest way to prevent this damage is to drain and disconnect the system in advance of [[Winter#Freezing and Expansion|freezing temperatures]][http://climate.weather.gc.ca/climate_normals/].</p> |