I've just turned the water thermostat down from 75 to 55. Will this lower my bill alot?

[Fluffycloudland77]

Or am I just leaving myself open to legionellas? (sp).

I wonder if you have a hot water cylinder or a combi, and I wonder where the thermostat was that you adjusted?

It's a Baxi boiler with a hot water tank in the airing cupboard.

The thermostats on the top.

If the thermostat is on the top of the cylinder, it is probably for the immersion heater which you only need to switch on if the boilet breaks down. Is it on a black plastic cap, round, about three inches across? The thermostat to control the watet temperature when tge boiler is running will be white, rectangular, about three inches high and one inch acrosd, strapped to the side of the cylinder about a foot from the botto
m.

How is the cylinder insulated?

Ooh whats this? Can I save some money? I have a HW cylinder in the cupboard. It quite possibly has a thermostat no idea but will check when I get up.

I heart PigletJohn and their knowledge of all things boilery

You can usually save more money by insulating it better. How is the cylinder and its pipes insulated now?

Ok, what we have is a water tank where the old fashioned immersion heater is, if it's hot we have hot water, if it's cold we dont.

It has an old manual switch (like a light switch) which is always off.

Is this an odd set up?

I cant get up in the loft to check for the water tank up there till DH nips out later.

I think what you are calling a water tank is a cylinder.

In the loft is probaby a cold water tank, squareish, never hot unless there is a very severe boiler-boiling-over fault, which either has a tight-fitting plastic lid, or a cemetery of drowned spiders and birds.

Only the cylinder is heated and has a thermostat.

Both need to be insulated, but for different reasons

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