hello ive just bought a house where the combi boiler is in the bedroom and there is no air brick in the outside wall i need to know how many to fit and where in relation to the combi boiler????????????????THANKS.
BE WARNED!!!!! Just because it's a combi doesn't mean it's room sealed!
May be an older model open-flue combi. You MUST check this before you assume it doesn't need ventilation!
Paul