Most furnaces are vented directly through roofs, with either a single pipe or a two-pipe system. A two-pipe system has a small pipe inside a larger one. Exhaust gases flow through the inner pipe while the outer pipe provides fresh air for combustion.
Should furnace exhaust pipe be covered?
High-efficiency gas furnaces have plastic vent pipes that extend to the outdoors to get rid of exhaust gases and bring in fresh air for combustion. ... 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.Jul 15, 2019
How do you vent a high efficiency furnace through the roof?
https://www.youtube.com/watch?v=5yoIO-XPZ60
How far above the roof should a vent pipe be?
Unless a roof is to be used for any purpose other than weather protection, extensions of vent pipes through a roof should be terminated at least 12 inches above the roof. The vent should be extended at least seven feet above the roof if it is to be used for something other than weather protection.
How do you secure a vent pipe through the roof?
https://www.youtube.com/watch?v=I1a3459qd4M
How far should vent pipe stick out of roof?
Unless a roof is to be used for any purpose other than weather protection, extensions of vent pipes through a roof should be terminated at least 12 inches above the roof. The vent should be extended at least seven feet above the roof if it is to be used for something other than weather protection.
Can a high efficiency furnace vent through the roof?
Depending on the installation, a high efficiency furnace will have at least one, and sometimes two, PVC pipes exiting the home. In newly built homes these vents will usually exit thru the roof. ... If there are two pipes, one is for the combustion air intake.Dec 3, 2017
Can I vent my furnace horizontally?
Direct Vents These furnace vents can be installed horizontally through an exterior wall, or vertically so exhaust fumes go out through the roof. Although more costly than a natural vent, a direct vent is also a more efficient and safer option.
Can you vent a high efficiency furnace vertically?
It is not a misnomer: high-efficiency furnaces are more efficient at heating your home. With a standard unit, heat can be lost during the process as the system vents out. The vertical venting method does not separate heat from byproducts, so it is carried away once it hits the chimney or flue.Feb 11, 2021
What is the pipe that sticks out of the roof?
plumbing vent
What type of pipe is used for furnace exhaust?
PVC pipes are used on conventional and sealed combustion high-efficiency furnaces. This is because their combustion process produces and exhausts gases and condensate at a rapid pace, which would corrode metal materials in a short time.Sep 26, 2017