Experts Share Hot Water Bottle Safety Advice During Cold Snap

With Cornwall in the grip of a bitter cold snap, many people are turning to hot water bottles to keep warm during the day and through the night.

They remain an affordable and effective way to beat the chill, especially while energy costs continue to be a concern. However, new figures highlight the risks when they are not used correctly.

In 2024, nearly 1,000 people were admitted to burn units in England and Wales following hot water bottle accidents.

Health and safety training provider High Speed Training has shared guidance to help reduce the risk of injury.

Warning Over Everyday Use

Dr. Richard Anderson, Head of Learning and Development at High Speed Training, said:
“Hot water bottles are a fantastic way to beat the chill, and with energy costs remaining a concern, they are more popular than ever. However, like any household item that utilizes high heat, they aren’t without risk.”

Check the Age of Your Bottle

Hot water bottles are recommended to be replaced every two years. Over time, the rubber can deteriorate, increasing the chance of splitting or leaking.

The age of a bottle can be identified by a flower-shaped symbol, known as the daisy wheel, embossed on the neck or body. The number in the centre shows the year of manufacture, while the twelve segments represent the months. Dots within the segments indicate the month and, in some cases, the week the bottle was made.

For example, a daisy wheel showing 25 in the centre with dots in the first six segments means the bottle was manufactured in June 2025. If a segment contains three dots, it indicates the third week of that month.

How to Fill and Use Hot Water Bottles Safely

Richard added:
“Before filling up, check the bottle for any noticeable damage or wear and tear. Avoid filling the bottle with boiling water. This can damage the internal seams, so it’s best to leave it to cool before filling up. It’s also advisable to only fill the bottle about two-thirds of the way full, before expelling any remaining air and ensuring the stopper is tightened securely.

“Always use some type of cover on a hot water bottle, which helps to avoid contact burns on the skin, and avoid sitting or lying on them, as this can increase the risk of the bottle failing.”

He also advised proper storage when the bottle is not in use, saying:
“When not in use, drain the bottle and store with the stopper removed in a cool, dry place like a cupboard.”