Peter, Jenki and Ian many thanks for the replies. I’ve included floor plans for the upcoming work later this year. You can get a comparison of the current floor plans from my profile.
At the moment nothing has been done for years and there is poor insulation and single glazed windows. We installed log burners in the two ground floor rooms on the left hand side of the plans as there is an abundance of logs here.
We will insulate throughout as well as the installation of new windows.
At the moment the log burners keep the two rooms very warm and are 8kw each. But the rest of the place is cold as soon as the heating goes off.
We don’t know how much energy (oil) we currently use as we are between two houses at the moment.
I know that we have 100a electricity supply and that we will be installing UFH throughout the ground floor.
Apologies for my lack of technical knowledge.