A flue pipe is an integral component of home heating installations. It is usually located at the fireplace, furnace or water heater installations. Exhaust gases and other byproducts of combustion are expelled into the outside atmosphere through the flue. In this way, pollution of indoor air is prevented.
A water heater flue pipe is a straight metal pipe fitted above the water heater burner, extending upwards. It is usually located centrally in the heater. Combustion gases are transmitted from the heater and expelled to the outside atmosphere.
The safe release of toxic gases is a vital function of the water heater flue. It prevents pollution of air indoors. The flue helps to maintain a clean and safe indoor atmosphere during water heating operations. Carbon monoxide poisoning is prevented with a properly fitted flue.
The flue also plays a role in water heating. It acts as a heat exchanger which helps to heat water contained in the storage tank. The flue pipe must never slope downwards. This would discharge toxic gases back into the house and endanger household occupants.

