When we move into the coldest time of year, draughts can undo much of the effort that goes into keeping your home warm.

Our homes are under constant assault from cold air that always seems to find its way in. Millions of homes still have Victorian-style sash windows, which look great and give very efficient ventilation, but can become draughty if not maintained.

Sash window repair is the obvious answer, provided by dozens of companies like https://www.sashwindowpreservation.co.uk/services/sash-window-repair/. However, if you have modern windows, it’s quite likely you’ll have the option of switching them to “winter mode”.

What is winter mode?

This adjustment tightens the seal between the window and its frame, helping to block cold air from creeping in and reducing heat loss by as much as a third. The process takes only a minute or two per window.

How do you switch?

Using a small Allen key, simply turn the adjustment screw-usually found along the edge of the frame-slightly clockwise. This pulls the sash closer against the gasket, minimising gaps where heat can escape.

Once adjusted, the windows should close snugly but not so tightly that the rubber seals are strained. The setting can easily be reversed when warmer weather returns, helping balance ventilation and comfort through the seasons.

While winter mode isn’t a substitute for quality double glazing or insulation, it’s an effective and inexpensive way to improve energy efficiency. With just a quick turn of a screw, your windows can work harder to keep your home warm and your heating bills under control.