Furnace Room Ventilation Requirements Ontario

The article you mentioned consider furnace type btus weighing air supply needs appeared march 4 2004.

Furnace room ventilation requirements ontario. The ontario building code ventilation of rooms and spaces 9 32 1 3. Ventilation of rooms and spaces 1 except as permitted in sentence 2 rooms or spaces in a dwelling unit shall be ventilated by natural means in accordance with subsection 9 32 2. Furnace rooms are typically small to save space elsewhere in the home. American gas association has certified the design of condensing furnaces for a minimum of 0 clearance from combustible materials with a single wall plastic vent pipe.

However without adequate ventilation the appliances inside won t be able to function properly. Technically you are correct but it depends on the type of furnace in this room i e is it a gravity warm air furnace draft hood or fan assisted or a direct vent appliance which brings fresh air back into the home. This means that a typical furnace of 100 000 btu hr. Would require two louvres 10 by 10 inch each.

See direct vents side wall vents for a complete table of recommended clearance distances from a direct vent gas appliance terminal to other building. Input of your furnace.