No, uPVC windows are in fact environmentally friendly for a number of reasons. uPVC windows are designed to maximise insulation, keeping warm air in and cold air out. Double glazing further enhances their insulating capacity. This is beneficial to both the homeowner and the environment. When heat is trapped inside the home, the heating system will not need to be used as often. This means that the homeowner will save money on reducing heating bills while helping to protect the environment by lowering carbon emissions. uPVC products perform very well in life-cycle assessment texts, and uPVC windows have been proven to be one of the most environmentally friendly glazing products available today. Additionally, uPVC windows can be recycled as much as 10 times.