The influence of flue sharing on venting performance.


Unvented combustion appliances.


Combustion vent clearances

Including furnace flue leakage in a simple air infiltration model.

Although there are many simple infiltration models already available none of them have an appropriate method of dealing with what is often the single largest leak in a building; a furnace or fireplace flue. Flues are different from the distributed leakage used in simple in­ filtration models. Flues represent 10% to 30% of the total building leakage all of which is concentrated at one location above the ceiling height.

AIM 2: The Alberta air infiltration model.


Fireplace air requirements.