How do I set the timer on my immersion?

Turn the central clock face so that it is the current time, or rotate the outer disk clockwise so that the solid black arrow points to the current time. To activate the timer function, ensure that the switch on the front face is indicating the timer symbol, in the centre.

How does an immersion timer work?

We recommend installing an immersion heater timer, which works just like a thermostat. This means that when the water reaches the desired temperature, the immersion tank will automatically turn off, so you aren’t wasting money.

Is it cheaper to leave immersion heater on all the time?

It’s better to leave the hot water heater on all the time, rather than turning it on and off. This is a very common myth. But in fact, you really don’t need to be heating your water all the time. Your immersion heater or boiler will heat up hot water which is stored in a tank.

Should I keep my immersion heater on all the time?

Do not leave your immersion heater running all the time. No matter how well-insulated the immersion tank is, it will still lose heat and the drop in water temperature will cause the immersion heater to run repeatedly (like your kettle coming back to the boil over and over again).

How do I know if my immersion heater is on?

How do I know if my electric immersion is on? The first thing to do is follow the wire (where possible) from the immersion heater element at the top of the hot water tank to the wall, where hopefully you will see a switch. If it is on, flick it off!

Do immersion heaters use a lot of electricity?

Immersion heaters use electricity to heat water, which is considerably more expensive than gas. For example, 1 kW of gas will cost you around 4p, while 1 kW of electricity will cost around 15p. That means a 6 kW immersion heater would cost 90p an hour to operate, substantially more than operating a gas combi boiler.

What happens if immersion is left on?

If you do leave it on constantly, there are two main problems that may occur: The immersion may stop working completely. The water in the cylinder may boil. The cylinder will then push this boiling water into the cold water tank in the attic.