You are reading a single comment by @Tenners and its replies.
Click here to read the full conversation.
-
Ventilation rate is an important factor in calculating the heat loss of a building (and therefore the output required of any given heating system to keep it warm). A modern house might have a ventilation rate of 0-0.5 air changes per hour (ACH), whereas a drafty Victorian house could hit 2 or even 2.5ACH. That is quite significant.
Tenners
FWIW its heat thats the issue so not sure draft proofing will solve the problem.