Furnace Pvc Exhaust Pipe Condensation

Some high efficiency furnaces also include a plastic pipe for intake area and all types use a third plastic pipe to drain away the corrosive condensation resulting from the combustion process.

Furnace pvc exhaust pipe condensation.

Your furnace is designed to collect and drain that condensate. Your if there was a problem with those exhaust pipes being a source for condensation then codes wouldn t allow a single wall pvc pipe to be in that environment is a declaration that you are making not code. It sounds like you have plenty of grade but your pipe is not straight. Condensation on the outside of a plastic tube isn t a safety problem more an aesthetic one.

Other aspects of high efficiency furnace venting. High efficiency furnaces produce high amounts of condensation moisture in the exhaust vent which is designed to run back into and through the furnace in order to drain out into either a floor drain or other approved draining system. This pipe directs combustible gases away from your home. The pvc pipes are used for air intake exhaust gas and to remove the corrosive condensation resulting from the combustion process.

These pvc pipes are connected to the furnace and expelled outside. Over time the moisture as well as the chemicals released by the furnace can damage the. Your exhaust pipe is the metal or pvc pipe that connects to your furnace and goes through the roof or side of the house. This high efficiency venting system must be installed when you install the new furnace.

Condensation in the flue or vent pipe is not dangerous in itself but can create a dangerous condition. In contrast modern high efficiency condensing furnaces exhaust much cooler gasses and need only plastic pipe materials such as pvc cpvc or abs for their exhaust vents. The pvc sticks out of the side of the house and the guy who installed the furnace said not to put any screening over the pipe because in very cold weather northern illinois condensation could collect on the screen freeze and seal off the inlet or outlet. The plastic gas furnace intake pipe can be insulated but any insulation strategy must include a vapour barrier on the outside.

If the vent pipes are not protected by screens you take a big risk for furnace problems due to pipe obstruction or infestations from pests. Generally the exhaust pipe should slope back towards the furnace about 1 4 per foot. You don t need to drill any holes in the pipe. Without this indoor air will permeate the insulation and condense internally against the pipe.

You will always get condensation in the exhaust flue on a run as long as yours. These pvc or cpvc pipes can be inviting to rodents and birds especially in the winter as well as insects mostly in summer looking for a home.