Getting attic conversion done. The guy is going to put a radiator in the attic and is recommending moving from an open to a closed system. Is this possible with a new Potterton gas condensing boiler? Also, as mentioned in previous thread, I am being told I need to top up the boiler frequently due to something about the pressure - will a closed system affect this?
Thanks for any help/advice.
Thanks for any help/advice.