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COMBUSTION AIR
Take note that an airtight house is liable to lack the fresh air needed for proper combustion, specially if
you are using appliances that evacuate air from the house, such as:
- Range
hood
- Air
exchanger
- Clothes
dryer
- Bathroom
fan
- Central vacuum cleaning system
In that case, it is recommended to install a 4” fresh air inlet in the room or next to the room where the
heating appliance is located (see drawing below); choose a wall which is not exposed to dominant winds,
depending on the conditions surrounding your house.
INSULATED PIPE
AIR
SUPPLY
EXTERIOR
WALL
AIR INLET
N.B. The owner is responsible for the salubrity of the premises in case of negative pressure or
temporary negative pressure.