The flow of air down a flue or chimney and into a house caused by low indoor air pressure that can occur when using several fans or fireplaces and/or if the house is very tight. Forces working to depressurize a home include those shown in the figure below, bathroom exhaust fans, kitchen range hood...
Found on
http://www.daviddarling.info/encyclopedia/B/AE_backdrafting.html
The flow of air down a flue/chimney and into a house caused by low indoor air pressure that can occur when using several fans or fireplaces and/or if the house is very tight.
Found on
https://www.encyclo.co.uk/local/22819
No exact match found.
