Could anyone tell me whether it is cheaper to put an immersion heater on a timer (to come on say twice a day) or to leave it on all the time so it is not heating water from scratch each time. We are a two adult household if that helps. Any help appreciated. Thank you
Electric Immersion Heater, Cheaper to have it on timer? Or leave it on perminantly?
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Need some information about the type of tank
and the method of control.
It the tank lagged?
Is there a tank thermostat or is it controlling
on the one fitted within the element?
The maximum recommended temperature is 60 Deg Cel
so that Legionella are "neutralised."
The more the heater is left on the greater will be
the standing losses so lagging is crucial.
The modern factory insulated units are far superior
to the DIY jackets.
and the method of control.
It the tank lagged?
Is there a tank thermostat or is it controlling
on the one fitted within the element?
The maximum recommended temperature is 60 Deg Cel
so that Legionella are "neutralised."
The more the heater is left on the greater will be
the standing losses so lagging is crucial.
The modern factory insulated units are far superior
to the DIY jackets.
Do you have economy 7 or another cheaper night rate electric supply ?
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Correction to my last post;
Recommended MINIMUM temp for stored
hot water is 60 Deg Cel.
Apologies.
Recommended MINIMUM temp for stored
hot water is 60 Deg Cel.
Apologies.
Sharpend
"It Just Is"
So why do manufacturer's have a range from 45-65 degrees???
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Sharpend I do not know. I know a specialist who
is a leading authority on Legionella and even he
would question the 60 deg setting. This is not
necessarily a GIVEN for ALL strains.
is a leading authority on Legionella and even he
would question the 60 deg setting. This is not
necessarily a GIVEN for ALL strains.
Sharpend
"It Just Is"
Seems odd, but still I'm sure there are people who work relentlessly on this sort of thing.
I've never had the definitive answer to this to be honest. I remember that the (now defunct) Midlands Electricity Board (MEB) always used to promote immersion heaters to be left on . But then we all bought our power from them in this area so they would say that wouldn't they?
As said above , there are some important criteria, a modern cylinder factory lagged , Economy 7 tariff and your particular usage. If you are filling say , two baths per day ,that would be expensive and an electric shower would be far cheaper to run. A bath will empty your cylinder .
If the immersion is just for washing up and a morning wash I'm thinking a time switch may be save money, or a selectable top element but heating up from cold is the most expensive , I'm taking a guess at 2.5 hours @3KW before the stat switches off.
As said above , there are some important criteria, a modern cylinder factory lagged , Economy 7 tariff and your particular usage. If you are filling say , two baths per day ,that would be expensive and an electric shower would be far cheaper to run. A bath will empty your cylinder .
If the immersion is just for washing up and a morning wash I'm thinking a time switch may be save money, or a selectable top element but heating up from cold is the most expensive , I'm taking a guess at 2.5 hours @3KW before the stat switches off.
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When I changed my Mother's cylinder and fitted a
cylinder wall stat for summer use only, she could
have a tank full of hot water within half an hour
if she did not run a bath.
Showers a lot cheaper, on water and power.
cylinder wall stat for summer use only, she could
have a tank full of hot water within half an hour
if she did not run a bath.
Showers a lot cheaper, on water and power.
As above. An immersion in a modern cylinder of average size can heat the water in less than 45 min
---------- Post Auto-Merged at 18:07 ---------- Previous post was made at 18:02 ----------
Since the majority of electrically water heated homes are on the economy 7 tariff, which is off for 17 hours a day i don't think Legionela has ever been a problem. It also makes me think if both of you are out at work during the day a time switch is deffo the way to go.
---------- Post Auto-Merged at 18:07 ---------- Previous post was made at 18:02 ----------
Since the majority of electrically water heated homes are on the economy 7 tariff, which is off for 17 hours a day i don't think Legionela has ever been a problem. It also makes me think if both of you are out at work during the day a time switch is deffo the way to go.
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