In winter, drafts can significantly impact how well we heat our homes.
Experts suggest a simple adjustment can reduce heat loss by up to a third, taking just moments to complete.
Here's how switching your windows to 'winter mode' effectively weatherproofs your home during chilly months.
Understanding 'Winter Mode' for Windows
To learn about 'winter mode', we consulted specialists who clarified that many modern windows feature an adjustable setting. This allows you to tighten the fit of the window within its frame.
This adjustment, recently termed 'winter mode' on social media, effectively minimizes cold drafts.
'Adjusting your windows to winter mode is quick; typically under a minute per window using a standard Allen key,' says Geoff Clarkson, a window installation expert. The Amazon Basics Hex Key Allen Wrench is all you need.
'You only need to do this once before the cold sets in; it's easily reversible in spring,' Geoff adds, when it's time to keep your home cool.
Steps to Set Your Windows to 'Winter Mode'

Putting your windows in 'winter mode' takes minimal time and helps save on heating costs.
Start by opening your windows and locating small screws on the inside of the frame, which typically fit an Allen key and have a notch pointing to 12 o'clock.
Insert the Allen key and turn the screw clockwise a quarter turn. This pulls the window closer to the frame, sealing gaps and effectively draft-proofing any room. After adjustment, the notch should point to three o'clock.
'Check the fit after closing the window,' advise the experts. 'If it feels stiff, ease it slightly by backing the screw until the notch is at one or two o'clock. This avoids over-compressing the rubber gaskets, preventing damage over time.'
Though it takes mere seconds, this adjustment can significantly cut your energy costs during colder months, especially in older homes.
'Windows can account for 10 to 15 percent of energy loss,' Geoff explains. 'Tightening the seal reduces drafts and keeps warmth inside.
'While this won't replace good insulation, it can reduce heat loss through gaps by up to a third.'
Additional Tips for Reducing Window Drafts

Layering curtains offers an effective solution to block drafts.
Punteha van Terheyden, a DIY enthusiast, has tackled drafts in her newly built home and notes that addressing them has significantly improved her energy costs.
She suggests:
- Inspect your front door: 'If there's a gap under an inch, apply self-adhesive weatherstripping for a quick fix. For larger gaps, use a durable aluminum door sweep like the Thermwell Extra Aluminum & Brush Door Sweep, which prevents drafts and pests.
- Use draft blockers: 'A filled draft blocker can be effective for doors or windows, protecting against cold or hot air infiltration. I prefer ones with machine-washable covers, such as the Sunolga draft stopper from Amazon, available in multiple lengths and colors.'
- Insulate your windows: 'Window insulation is one of the most cost-effective methods to keep your home warm, and insulation kits are effective. The Frost King Shrink Window Kit is durable and easy to install.'
- Layer window treatments: 'Trapping cold air against the window helps maintain an even temperature, making it a quick and stylish way to prevent drafts. Allow warm air in, then close your blinds and curtains to keep warmth trapped.
Products to Consider
Prices were accurate at the time of publication.
Sufficient for 10 windows
Enhance your energy savings with this popular window insulation kit, which installs in minutes and fits seamlessly for clarity.
Set of two
This self-adhesive draft blocker is user-friendly and can be trimmed to fit any space, including bathrooms, basements, and garages.
Available in 13 shades
As Punteha notes, layering window treatments is a smart way to capture warmth and block out cold air. These thermal curtains also block over 99 percent of light for improved sleep.
36-piece collection
This comprehensive set of Allen keys offers the sizes needed for various screws, featuring a black oxide finish for durability and rust resistance.
Fits all doors
This draft stopper uses weight for a secure fit, effectively retaining heat and blocking wind. Unlike the Sunolga draft stopper, this product isn't machine washable.
Strong grip
This tape features peel-and-stick adhesive, suitable for wood, glass, tile, and metal surfaces, ideal for windows, bathrooms, attics, and basements.