My friend is too scared to turn on the immersion heater during the day beca
use she is absent minded and only remembers its on a few days later and so
gets big bills. She'e on Economy 7, so its set for night time operation but
being a small capacity it sometimes runs out of hot water in the afternoon
Does anyone know of a simple button type switch I could fit for her which c
ould be preset for say 2 hours (ON), so she can hit it (to boost the hot wa
ter) and forget it. I've already fitted a red indicator light in the hall b
ut this does not solve the problem.
I've seen similar device for communal lighting but they only work for say 5
Like I said, my time switch for the emersion heater is self contained, my
storage heater economy 7 is on a special circuit but the other switch for
the immersion heater echoes the same times just in case. It has an internal
rechargeable too which had tobe replaced at the last power cut.
I'm sure such devices have to still exist. It just has two buttons one for
an hour over ride and one for off, when its off the internal timer can still
turn it on.
In the case of the Immersion heater not being wired through a timer, then
you can get complicated a bit.
This newsgroup posting comes to you directly from...
I have seen so many peopel that worry needlessly about their hot water.
from people who think that a half filled kettle or having a shower
insyead of a bath will save the planet, to people who think that solar
water heaters on theior rooves will save half their heating costs - when
its half their water heating costs.
I use the same ampunt of hot water summer and winter, In summer I use
virtually no oil at all. In winter I use over 250l a WEEK
“it should be clear by now to everyone that activist environmentalism
(or environmental activism) is becoming a general ideology about humans,
TLC sell such a device. I fitted one in our village hall on an electric
room heater - in case the hirer forgets to turn it off.
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle
How much of a problem it is may depend on the quality of insulation
around the tank. Might be worth using an Owl power monitor to see if the
consumption from leaving it on is enough to be worth worrying about.
A well lagged one won't actually lose that much heat ~50W or probably
less until you draw water and add fresh cold water from the mains.
Likewise in our VH. Otherwise someone will leave it on and the big old
tank was not especially well lagged. It got really interesting when the
immersion heater thermostat failed closed once and it boiled the tank. A
jet of steam and hot water came out of the overflow as it bumped.
We also have an Owl monitor so that when leaving you can see if the base
load is unexpectedly high. People do tend to leave warming cupboards,
outside lights and other equipment on if not reminded to switch off at
every opportunity. The most thirsty are now all on countdown timers
(ours do 1/2,1,2,4 hours) and a slightly eerie blue LED glow.
You need a Smiths Immersion heater timer.
It can be set to come on for one or two periods per day,
plus a button that gives a timed 1 hour boost.
Without using the daily timing periods you can just rely
on the 1-hour boost facility.
Actually, giving it 30 to 45 minutes at night off-peak will
stop any legionaires bugs getting a hold anyway. If her
tank is well lagged it will last all day for most single
On Friday, 14 February 2020 15:53:28 UTC, Andrew wrote:
because she is absent minded and only remembers its on a few days later and
so gets big bills. She'e on Economy 7, so its set for night time operation
but being a small capacity it sometimes runs out of hot water in the after
ch could be preset for say 2 hours (ON), so she can hit it (to boost the ho
t water) and forget it. I've already fitted a red indicator light in the ha
ll but this does not solve the problem.
ay 5 mins.
Mine isn;t particualr well insulated, the jacket was put on before installa
it seems so has fallen apart at the back.
My timer is
I prefer the mechanical version, and I can set it to come on for 15 mins
before I get home so around 6pm to 6:15pm, just to top up the temperature,
when I think I need to.
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