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immersion heater

Electric heating is a process in which electrical energy is converted to heat energy. Common applications include space heating, cooking, water heating and industrial processes. An electric heater is an electrical device that converts an electric current into heat. The heating element inside every electric heater is an electrical resistor, and works on the principle of Joule heating: an electric current passing through a resistor will convert that electrical energy into heat energy. Most modern electric heating devices use nichrome wire as the active element; the heating element, depicted on the right, uses nichrome wire supported by ceramic insulators.
Alternatively, a heat pump uses an electric motor to drive a refrigeration cycle, that draws heat energy from a source such as the ground or outside air and directs that heat into the space to be warmed. Some systems can be reversed so that the interior space is cooled and the warm air is discharged outside or into the ground.

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  1. VirtuosicVirtuoso

    Newly installed immersion heater suddenly stopped working after a week. What could be the issue?

    I've recently replaced an immersion heater for a direct cylinder, for 2.75-3kW. The new one seemed to be working a week before I got a callback. I checked the resistance of the immersion heater, and it read 19ohms, and the voltage on the live and neutral read 230V, but there was no humming or...
  2. W

    Pressure reliefe pouring out of unvented immersion heater.

    Hi all. So I have an OSO Super SXD 180 immersion heater and it is pouring a huge amount of water out of the cold water pressure relief valve regardless of whether the tank is heating or not. We're talking litres a minute currently. I have replaced the valve which changed nothing. I have...
  3. S

    Dual immersion heater question

    I recently posted to request information about supply of a "dual Immersion heater". Two members kindly replied with helpful advice. I tried to respond with thanks but the system persistently refused to accept this; quoting: "Your content can not be submitted. This is likely because your content...
  4. S

    Dual immersion heater with sink/bath switch

    I have read of hot water cylinders being heated with a dual element immersion heater. The main principle being that a shorter element heats the top of the tank and then, subsequently, a longer element comes into play. With a bath/sink switch the longer element may be disabled. The topic of such...
  5. T

    Tesla T-Smart immersion heater reliability ?

    Has anyone fitted a Tesla T-Smart immersion heater and can comment on reliability ? On Amazon, there are mixed reviews, with one saying that it is dangerous as it didn't turn off properly. I spoke to Tesla and they said that those reports were early teething issues (but I guess they would say...
  6. B

    Part of Immersion Heater Element Fell into Tank

    Struggled with an element that was far too wide to come out of the aperture (how was it ever put in ?) I had to cut one loop. After some brute force the head broke off leaving the broken ends of the element protruding. I wiggled half of it out at which point the other half fell back into the...
  7. G

    How do I control my immersion heater?

    I have just bought a flat and the water is heated via an old UV Gold immersion heater system. A plumber friend of mine suggested I look for a timer to control it but I haven’t been able to find anything. I have no idea how to control the hot water! Does anyone have any suggestions? Pics...
  8. DJseals

    Immersion heater replacement

    I want to replace my old immersion heater, it currently has a dual immersion with bath/sink switch, we only ever need the whole tank heated so can i replace with a single immersion? or if i am doing it a a DIYer is like for like easier.
  9. J

    Immersion heater noise

    I had a new water heater element fitted a few weeks ago that heats water at night on economy 7. Previous heater elements have been very quiet but I can hear the new one heating the tank at night. It sounds a bit like a boiling kettle. Is this normal? It’s driving me mad!
  10. P

    Megaflo Heatrae Sadia Immersion Heater Replacement TSE v TSR

    I know this topic may already have been covered but I just wanted to address it again. Can someone please tell me what the difference is between the teal green thermostat and the white one? (see attached photos) I have one of each in our Megaflow, one operates the Economy 10 and the other is...
  11. F

    Immersion heater coming on too early

    Hi all I’m not a plumber or a DIYer. I need help! My immersion heater has started coming on at about 10.15 pm. I dont know when this started happening but normally it comes on after midnight ( it runs on eco 7). The immersion is wired into a switch on the wall that lights up when the heater is...
  12. E

    Immersion heater problems!

    Good evening everyone :), I’ve recently moved into a new flat that is completely electric (It’s got a dual immersion heater) and just had a smart meter installed. The dual immersion heater and has two separate switches - one is labelled top. I’ve had them both on since moving in but just seen...
    • EvieB1
    • Thread
    • heating system immersion immersion heater
    • Replies: 3
    • Forum: Central Heating Forum
  13. C

    Can I add a small electric boiler in parallel with my central heating?

    Hi, I would really appreciate some advice on a proposed change to my central heating circuit. I am able to divert excess electricity from my recent solar PV installation to one (or two) hot water tanks and I would like to plumb in a small hot water tank in parallel with my central heating...
  14. M

    immersion heater failed after 4 months

    Is there any reason other than poor element. Why an immersion heater would fail 4 months after fitting on an unvented cylinder? Apparently it has power too it etc. Thanks. It isn't the original one either.
  15. C

    Lower flow temperature in vented HWC w/immersion heater weekly cycle?

    Newly bought home has somewhat older plumbing, but recently fitted condensing gas boiler & HW cylinder. System is open vented. When we moved in we had a few control problems, engineer who fixed it replaced the programmer, said there were a few broken wires (which he somehow managed not to use)...
    • combedcloud22
    • Thread
    • immersion heater temperature vented cylinder
    • Replies: 0
    • Forum: Central Heating Forum
  16. orangemars2000

    Immersion heater very little hot water

    I moved into a flat over a month ago now and realized when trying to take a shower that there was little to no hot water - at this time I would turn the water on full out, it would stay cold for maybe 30 sec, it would then get noticeably warmer (lukewarm) and then run out again in maybe 15...
  17. T

    What size thread for Immersion Heating Element?

    Hi, I want to fit an immersion heating element to my hot water tank (water is currently heated by gas). I'd like to buy it before I start draining water from the tank. The plug in the tank has a 1 1/4" nut on a pate approx 3" in diameter, does anybody know what size thread the tank will have...
    • Tony Griffin
    • Thread
    • america element heating immersion immersion heater size thread usa
    • Replies: 2
    • Forum: USA
  18. S

    Immersion Heater Overheating & Kettling

    Hi All, My nans hot water recently stopped working which resulted in an extremly over priced plumber coming out and replacing both elements in the immersion tank. Aside from a huge price tag, it seemed the issue was resolved... until a few weeks back The cut off switch keeps going off if the...
  19. R

    Immersion heater has water in the cap

    My immersion heater tripped the mains breaker, when I took the cap off it was full of water and the element seems to be shorted to earth. It's been there for a while so ok I need a new one but how is the water getting into the cap. I cleaned it up and left the cap off check next day full of...
  20. U

    Why do I have to keep re-setting the immersion heater thermostat

    Dear All, My hot water cylinder (approx 45 years old) is fitted with a bottom mounted immersion heater controlled via a timer and an Essentials 7" TS220 thermostat bought from Screwfix. The cylinder itself is well lagged with two jackets and the timer kicks in every evening for 3 hours...
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