Over a quarter of all domestic heat loss escapes through windows and doors. In these days of spiralling energy bills this can add up to a lot of wasted money.
New A rated windows can save in the long term.
The carbon used to manufacture 1sq m of double glazing is saved within 3.5 months if replacing single glazed windows. In the case of standard double glazing being replaced by energy efficient double glazing, the time is around 10.5 months.