A water heater that produces no hot water may not be getting power, if you had a power cut it may have a tripped limit switch,
or may have one or more failed heating elements.
First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped.
If the breaker has tripped, switch it off, then switch it back on.
We have been asked why the immersion heater is not working.
The straight answer is that the culprit may be anything from a faulty thermostat to damaged elements, and even limescale build-up.
How can I tell if my immersion heater is bad?
Isolate the heater from the supply, take off the cover and then measure the resistance across the heater excluding the thermostat.
Then turn thermostat up until it clicks on and measure resistance across thermostat on its own.
What is an immersion heater and how does it work?
An immersion heater is an electric water heater that sits inside a hot-water cylinder. It acts a bit like a kettle, using an
electric resistance heater (which looks like a metal loop or coil) to heat the surrounding water.
Immersion heaters are connected to their own power supply via a cable.
Can you leave an 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.
Your immersion heater or boiler will heat up hot water which is stored in a tank. If the tank has a good insulating jacket, it will keep the water hot all day,
without needing to be constantly reheated.
Do immersion heaters work for pools?
Solar pool heaters capture “free heat” to raise the water temperature.
On the far end are immersion pool heaters that are portable electric wand-type units.
They are better for small pools, for boiling bucket water, and construction, farming, industry, and cold weather use.
How long do immersion heater elements last?
between two and three years Replacing the elements on an unvented water heater.
An immersion heater may last for between two and three years before it burns out and needs to be changed.
How do you use an immersion heater?
The immersion heater is connected to the mains electric via a cable and has its own on/off switch.
When the heater is turned on, electricity heats the metal element, and this heat passes to the surrounding water.
It can take 1-2 hours for the water in the cylinder to reach your desired temperature.
Do immersion heaters use a lot of electricity?
Heating water using electricity is more expensive than heating water with gas. A typical immersion heater
uses three kilowatts of electricity an hour, so it will cost the average house about 50p an hour to run.
How many gallons of water can an immersion heater heat?
5 gallons High Power: 1500W, 120V (MUST USE 15A OUTLET, THE HEATER IS 12.5A CURRENT) travel immersion water heater,
High power for quickly heating, heats 5 gallons of water in few minutes, portable immersion heater will heat water continuously
over 180 degrees F and towards boiling (It can't boil water). greatly saving your time.
Is it better to leave immersion heater on?
It's better to leave the hot water heater on all the time, rather than turning it on and off. But this depends on your budget my Grandad would
go crazy if you left his immersion heater on all day!
Your immersion heater or boiler will heat up hot water which is stored in a tank.
If the tank has a good insulating jacket, it will keep the water hot all day, without needing to be constantly reheated.
How long does an immersion tank last?
An immersion heater may last for between two and three years before it burns out and needs to be changed.
Why do immersion heaters fail?
Failure of immersion heater elements in a normally operating copper hot water storage tank may be caused by corrosion, or by development of an electrical defect.
Frequent element failures at regular intervals occur in relatively few premises and these have particularly saline and/or scale forming water supplies.
How often should an immersion heater be serviced?
It is best practice to advise the homeowner of the need to continue having their cylinder serviced every 12 months.
What is the ideal temperature for an immersion heater?
The hot water cylinder thermostat controls the temperature of water that comes out of the taps. In “hard water” areas it is recommended
that the thermostat on the immersion heater is set to 50°C. If you have a twin immersion heater the top element should be set to 50°C and the lower one to 60°C. immersion heater tank.
How long does immersion heater keep water hot for?
If the tank has a good insulating jacket, it will keep the water hot all day, without needing to be constantly reheated.
You can use a timer to heat your water for an hour or two each day just before you would usually need hot water for baths or showers.
What is the cheapest form of heating?
Gas is generally much the cheapest form of heating, but its cost depends on several factors, including your supplier, tariff, and boiler.
If you want to cut the power to your immersion heater do this by switching the circuit breaker off.
Remove the lid that protects the upper heating element of your unit.
Carefully remove the plastic safety cap and try not to touch any wires and other electrical fixtures.
Turn the power on and test the immersion heater.
Why has my immersion heater stopped working?
A water heater that produces no hot water may not be getting power, may have a tripped limit switch,
or may have one or more failed heating elements. First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped.
If the breaker has tripped, switch it off, then switch it back on.
