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Homes & Gardens
Homes & Gardens
Megan Slack

This Century-Old Swedish Hot Water Bottle Trick Keeps Nordic Bedrooms Warm through Freezing Nights – the Secret Is in the Smart Placement

Neutral bedroom with a minimalist headboard and bright white bedding set alongside a beige nightstand and pendant light.

As New York and Connecticut battle a historic blizzard, millions of people will be left looking for ways to sleep warmly and peacefully. The answer lies across the Atlantic in a Nordic tradition that's been practiced in homes across Sweden, Denmark, Finland, and Norway since the 17th century.

In this traditional practice, the key isn’t just having a hot water bottle – it’s knowing where to put it. The bottle is typically placed at the foot of the bed or between the top sheet and duvet, rather than pressed directly against the body, as many of us have become accustomed to in recent years.

This warms the air pocket under the covers evenly, preventing sweat and keeping the warmth circulating around your feet and legs. Some also place it briefly under the pillow before bed to gently warm the head area. The result is a cozy, evenly heated bed that retains warmth through even the coldest nights, without overheating any single spot. It's a time-honored way to keep warm while you sleep, and you only need a hot water bottle (like this one from Amazon) to follow the tradition.

Shop the Best Hot Water Bottles

In Nordic countries, where winters are long, dark, and historically fuel-scarce, bedrooms were traditionally kept unheated to conserve firewood, making bed-warming essential rather than indulgent. This hot water bottle method likely grew out of older practices from the 1600s onward, when people used heated stones, metal warmers, or wrapped bricks to warm their chilly bedding.

Over time, Scandinavians learned that placing the heat source to warm the air trapped under layers of wool and linen, rather than the body itself, kept beds warmer for longer and avoided sweat-induced chills. Now, as this cold chill hits, it feels as important as ever. Homes & Gardens’ sleep editor, Ottilie Blackhall, agrees.

‘Sleep research shows we rest best in cooler rooms, but with a warm microclimate around the body. This Scandinavian hot water bottle method does exactly that – it warms the bed, not the air, which makes it surprisingly relevant for how we sleep today,’ Ottilie comments.

‘With an East Coast blizzard continuing to drive temperatures down, it’s a reminder that, sometimes, the time-honored methods are the best. In extreme cold, focusing warmth where the body actually needs it can improve sleep quality while reducing energy use.’

Ultimately, it’s worth us all taking a page from centuries of Scandinavian wisdom, even if you’re not caught in a blizzard. A simple hot water bottle, placed thoughtfully between the top bed sheet, can transform a freezing bedroom into a warmer sanctuary. By letting the air around your feet and legs carry the heat, you can sleep comfortably, proving that even in the harshest winters, a little tradition goes a long way.


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