Poor ventilation and ‘backdrafting’ happens when exhaust fans and combustion devices within a home compete for the fresh air supply. In homes that draw on the burning of fossil fuels for energy, marks of ash or soot on or around the appliance, plus the presence of smoke anywhere near, are tell-tale signs of below-par ventilation and the occurrence of backdrafting.
To find out further details, explore our dedicated blog, How to perform a DIY home energy audit.