Backdrafting


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Backdrafting

Potentially hazardous condition in which the exhaust from combustion appliances does not properly exit the building. This can be due to a number of factors including a blocked flue or a pressure difference within the building.
References in periodicals archive ?
Erik tests for backdrafting in the water heater flue as well by holding a flame or a smoke stick next to the draft diverter (Photo 2).
2 Backdraft test: With all doors and windows closed and all combustion appliances turned on, the auditor tests for backdrafting at a naturaldraft gas water heater.
Backdrafting occurs when the combustion gases can't go up and out flues and chimneys because outdoor air is already flowing down them (Fig.
B BACKDRAFTING BACKDRAFTING is a condition in which air flows down a flue or chimney rather than up, and combustion fumes can't flow out.
Backdrafting is a threat to the health of your family and your house.
Backdrafting became an increasing problem after the energy crisis of 1973 when gas lines and rising fuel prices made energy conservation a high priority.
Fortunately you can easily test your furnace and water heater for backdrafting.
If the flame or smoke is not drawn to the flue, or is blown away from it, you have a backdrafting problem.