A 12V immersion heater heats water using your van's electrical system. It's portable, easy to use, and perfect for making tea or coffee on the go.
Top Picks
Best Overall
Stunning Stainless Steel 12V Immersion Heater (£15, Amazon)
- Stainless steel element
- 12V, 150W
- Heats 500ml in 5-8 minutes
- Automatic shut-off
Best Budget
Generic 12V Water Heater (£8, Amazon)
- Plastic housing
- 12V, 100W
- Heats 500ml in 8-10 minutes
- Basic design
Best for Travel
Travel Water Heater Kettle (£20, Amazon)
- Built-in kettle design
- 12V, 150W
- 500ml capacity
- Insulated body
How They Work
A 12V immersion heater is a heating element that sits in a container of water. It heats the water directly. No boiler or plumbing needed.
How to Use
- Fill a container with water
- Submerge the heating element
- Plug into the 12V socket
- Wait 5-10 minutes
- Unplug when water is hot
Safety Tips
- Don't touch the element when hot: It gets very hot
- Don't leave unattended: Risk of overheating
- Use a stable container: Don't knock it over
- Don't use in enclosed spaces: Steam can cause condensation
- Check the voltage: Make sure it's 12V, not 240V
Limitations
- Slow: Takes 5-10 minutes for a cup
- Power hungry: Uses 10-15Ah per use
- Small capacity: Usually 500ml max
- No temperature control: On or off
Better Alternatives
- Gas kettle: Faster, more efficient
- Diesel heater: Heats water and the van
- Gas water heater: Instant hot water on demand
Conclusion
A 12V immersion heater is useful for quick cups of tea. But for regular use, a gas or diesel heater is better. The Stunning Stainless Steel Heater (£15) is the best option.
