Using a hot water bottle safely: the key rules
Temperature, fill level, cover: how to use any hot water bottle safely.
Hot water bottles are among the most common causes of scalds at home. Follow a few rules and it won't happen.
With rubber hot water bottles
- No boiling water, let it cool down a little first.
- Only fill it about two-thirds full and squeeze out the air.
- Screw the stopper on tightly and briefly check it upside down.
- Never directly on your skin, always with a cover.
- Don't sit or lie on it.
With the Vaermflasche
- The top levels get really hot: use a cover or a layer of fabric.
- Only charge it with the cable provided, then unplug it.
- Close the cap on the port after charging.
- Children only under supervision; if in doubt, check with a doctor.
Good to know
The Vaermflasche switches off automatically and has overheating protection.

The Vaermflasche
Never boil water again. Plug in, 3–6 minutes, warm. Up to 70 °C, no battery, 30 nights to try.
View