During the winter months it is very important that as the tenant of a property you take precautions to protect the property or any surrounding properties from damage that can be caused by freezing temperatures at this time of year.
It is a condition of your lease and responsibility as the legal tenant(s) to be diligent and take steps to make sure the property is heated and kept warm to a level that will reduce the risk of burst pipes caused by freezing temperatures.
If you are leaving your property at any time during the winter period for holidays or going back home to relatives for the Christmas period, the property should be drained down by a qualified plumber to make sure there is no water in the pipes that could freeze and burst.