Replace a one-pipe heating and water system - worth it?

grumbler

What_time_is_it said:

grumbler said:

What_time_is_it said:

The house is very big - 3 story detached house with 7 bedrooms and 2 bathrooms.

3-storey house with bad windows acts like chimney when you heat it.

Is there a door to the top floor?.

No. It's an open staircase to the top floor landing. Basically on open 3 story staircase linking the hall and entrance area to the landings on floors 2 and 3. There are 2 bedrooms there which both have doors which are kept closed. Insulation is pretty much non-existent and windows are from the 1920s.

I'd isolate the top floor from the bottom area with a door sealed reliably. I don't think that building a small stud wall with a door can be very expensive.