I have the hot water tank situated in my bedroom, I am on Economy 7 and
the immersion heater kicks in at 1am and comes on and off during the
night. This is very disruptive and giving me sleepless nights.
I have talked to a plumber and he says the tank cannot be moved as
there is nowhere else suitable to put it.
Has anyone got any ideas of how to make the heater less noisy ? I am
at my wits end with it! I have just had the both immersion heaters
replaced in the tank to the parts are new.
What sort of noise? The kettle- noise as the water heats?
Only three things that you can really do with noise, stop
it, mask it, or attenuate it.
You can stop it by not switching it on before days when you
will be mostly out and could manage just on the smaller
peak-electic heater. You may even save money that way, on
days that you don't need much hot water. Or add a
short-burst controller, so the heater is switched on and off
every seconds or so while it is "on" - thus not forming the
cavitation bubbles that make the noise.
You can mask it with another, more acceptable, noise - I
know that may sound daft, but it does work. I rented a flat
with thin walls once where the neighbours, well, it was
probably just envy on my part..Anyhow, I had a "mood radio",
I think it was, that had a selection of sounds, that you
could leave running quietly all night, like wind blowing
trees and waves on a beach. It worked for me - apart from
the waves one that kept me awake going to the loo..Or
getting pregant and having a small baby in the room will do
it - you won't hear the heater then..
Then you can attenuate the sound. Turning down the
thermostat may do it. Fitting a lower wattage/different
shape element. More insulation on the tank. Change the cold
water stopcock setting to more open or more closed.
When I had exactly the same problem, option 3 did the trick for me and I
still get plenty of hot water. In case the OP doesn't know, what you do is
switch the power off and remove the cover where the cable goes into the
tank. Between the connections you should see a little dial with temperature
numbers on it. Use a screwdriver to tweak it down a bit. Box up, power on
and see how it goes.
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