1) Grant Vortex Oil Boiler installed incorrectly, to be re-housed in the boiler room. New Grant Orange Flue line installed in boiler chimney. Boiler serviced.
2) Heating pipes not zoned, need 3 zones for a) upstairs b) water tank c) underfloor heating
3) New - larger - pump for boiler
4) System changed over to unvented.
5) new water tank: Magaflo / Worcester