Depending on the type of furnace venting takes place through a plastic pipe on the outside of the house or through the chimney.
Gas fireplace pipe clogged.
Step 1 determine the cause of the clog.
For an outdoor gas light or appliance whose gas supply line is buried water leaking into the gas line can cause a blockage or can cause corrosion that blocks the line.
Gas and oil furnace have a vent pipe or flue that sends the gaseous by products of combustion to the outdoors.
That s because any debris remaining in the gas line risks clogging a gas orifice or control making the gas light unreliable or even possibly unsafe.
Over time the furnace exhaust vent can become clogged with debris.
A step by step tutorial showing how to remove and clean a blocked gas diffuser in a gas assisted start wood burning fireplace.
If the vents and pipes in a natural gas water heater are clogged it could lead to serious health issues due to the release of carbon monoxide and other dangerous gases inside the home.
How to clean gas fireplace burners.