The best solution is to provide makeup air to the house so the negative pressure problem no longer exists, thus eliminating not only the smoke problem, but fine dining voucher perth also the potential for carbon monoxide to be drawn back down the furnace chimney.
If chemical chimney cleaning products perform as claimed and cause debris in the chimney to fall, that debris still needs to be removed from the smoke shelf, baffle, catalytic combustor, or offset in order to ensure a properly functioning chimney.A flu is a masonry or metal tube that carries emissions from an appliance up the chimney and out of the house.The odor is usually worse in the summer when the humidity is high and the air conditioner is turned.They should be registered with the Guild of Master Chimney Sweeps.The problem is that it is almost impossible to determine that without destroying the chimney. .As it relates to your chimney, draft is the air flow that carries emissions up a flu and out of your house.Over several years the deterioration will eventually require attention.Any time an appreciable accumulation of soot and creosote occurs it can be enough to fuel a chimney fire that may damage the chimney and even spread to the roof and home.The job of the chimney sweep is to remove soot, blockages and built-up creosote from your chimney liner, firebox, smoke chamber and damper.That white stuff is called efflorescence and is caused by moisture in your chimney, you can read more about efflorescence here.In most cases this will make a direct visual observation of the flue impossible.
It makes much more sense to insulate every liner serving a wood burning appliance. .