Both a Convential and a Combi boiler together??

janem2

Hi
I live in a large old house and the cost of gas to heat the water in the winter is shocking. There are only tw oof us in the house and the current boiler is working with no problems...

What I was wondering is if a house could have two boilers - a combi for hot water and a convential one for the radiators.

We had BG round who told us that a combi isn't the best for the size of house we have but I think that the two boiler solution may give us hot water we could actually afford to use......


Thanks


J

Canucklehead

Hi

To answer your question,yes you can have two boilers.New condensing boilers will be far cheaper on gas than the one you have in any event.
Now the downside , as there are only two of you then the major expense will be space heating not hot water (unless you have frequent guests.) It would be better to invest in insulation first.
Depending on the number of bathrooms/showers a combi would not be the best solution anyway(as BG said)it will not produce enough hot water to satisfy simultaneous demand.

You might also find the combined gas demand from both boilers will exceed the 6 cubic metre capacity of a standard domestic gas meter plus cooking needs.(this happened to one of my customers.)You would need a larger meter.

Corgi Guy.

Ps See here... www.worcester-bosch.co.uk go to the find a boiler section and add your details. HTH

EliteHeat

janem2 wrote: »

Hi
I live in a large old house and the cost of gas to heat the water in the winter is shocking. There are only tw oof us in the house and the current boiler is working with no problems...

What I was wondering is if a house could have two boilers - a combi for hot water and a convential one for the radiators.

We had BG round who told us that a combi isn't the best for the size of house we have but I think that the two boiler solution may give us hot water we could actually afford to use......


Thanks


J

You could have a combi that deals with both stored hot water and central heating.

Canucklehead

EliteHeat wrote: »

You could have a combi that deals with both stored hot water and central heating.

Hi

Do you mean internallly stored hot water (say 60 litres)?or a remote cylinder?

I have seen (but not done) a Vaillant combi connected to a remote cylinder (a Vaillant one) but I didn't see the logic , and greater cost, of using a combi to do the same job as a heat only boiler and a cylinder with a couple of zone valves.
Corgi Guy.

silvercar

We have a newish combi boiler that serves the en-suites and a old conventional boiler that serves most of the heating and the hot water tank for the main bathroom.

Not had a larger meter fitted AFAIK.

Works well, but we sometimes direct the kids which bathroom to use if we know there is a tank of heated water going unused!

EliteHeat

Canucklehead wrote: »

Hi

Do you mean internallly stored hot water (say 60 litres)?or a remote cylinder?

I have seen (but not done) a Vaillant combi connected to a remote cylinder (a Vaillant one) but I didn't see the logic , and greater cost, of using a combi to do the same job as a heat only boiler and a cylinder with a couple of zone valves.
Corgi Guy.

Yes, a couple of zone valves and the job is done. The only logic is that it isn't necessary to replace a combi to provide stored hot water if the owner finds the combi cannot cope with the demand.