"peter" wrote in message
...
Sooner or later I am going to have to get our aging gas backboiler
replaced. I live in a chalet bungalow (we had a loft conversion put in
some 25 years ago) with a full length carport down the side of this semi
detached property. Convenient outside wall options for hanging a
combination boiler are not good. My favorite option would be to locate the
boiler in our present downstairs located airing cupboard. The airing
cupboard does not have an outside wall but backs directly onto the
chimney. This would imply removing the present storage tank and using a
chimney flue liner kit (after knocking a hole through the back of the
airing cupboard into the chimney flue) . We have just had a new kitchen
fitted which I do not wish to mess up by installation of a boiler and we
are about to upgrade the bathroom (possibly the only other feasible
location for a boiler other than the airing cupboard). Obviously it would
be helpful to ensure that a boiler can be placed in the airing cupboard
before closing down other options. Is a chimney flued combination boiler
likely to be viable or not? I would not be unduly worried about blocking
off the fireplace flue in the adjacent sitting room as we rarely use the
gas fire in front of the backboiler and would happily substitute an
electric powered equivalent.

There is nothing wrong with using an existing chimney. Boilers these days
have highly flexible flue systems that can have plastic pipe run up the
chimney.