Note the quote marks around "rooms" in my original post. In reality many of them are not distinct rooms, but the heating engineer needed to put them into his calculator as separate rooms to get an accurate heat loss estimate. For example, hallways, landings, and storage spaces were all counted as separate rooms. Also, our open plan living/dining room had to be split into 2 "rooms" as some of it is in the extension, but the rest is in the old house. Same story in our kitchen.
Note the quote marks around "rooms" in my original post. In reality many of them are not distinct rooms, but the heating engineer needed to put them into his calculator as separate rooms to get an accurate heat loss estimate. For example, hallways, landings, and storage spaces were all counted as separate rooms. Also, our open plan living/dining room had to be split into 2 "rooms" as some of it is in the extension, but the rest is in the old house. Same story in our kitchen.
Don't worry, we're not talking a mansion!