If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof.
Roof top high efficiency furnace venting options.
Sidewall vent systems are especially great for replacing old chimneys and it is one of the more affordable options to consider when installing a venting system for your gas furnace.
If your furnace has an afue rating of 90 or lower it probably exhausts the gases though the flue pipe on your roof.
Explaining the difference of exhaust venting in a high efficiency furnace versus a standard efficien.
High efficiency furnaces take advantage of the heat in the combustion gases that are wasted in natural ventilation systems.
This high efficiency venting system must be installed when you install the new furnace.
This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner.
Due to the condensing nature of a high efficiency furnace its venting must be made of a material that is resistant to corrosion.
When the vent is withdrawing air from the house it expels the gas outside through the vent.
Two pipe or direct vent systems and single pipe systems which have non direct venting.
Another problem is that flue pipes that go through the roof tend to be less efficient.
Types of high efficiency furnace venting systems there are two types of condensing furnaces.
The fan works in conjunction with the furnace usually turning on before the furnace starts.
These pvc pipes are connected to the furnace and expelled outside.
In a great majority of cases plastic piping is used to vent high efficiency equipment.
To avoid this problem high efficiency furnace venting requires the use of pvc pipes instead of metal pipes to remove the acidic condensate from your home.
Sidewall power vents also rate highly in efficiency and safety.
So which type of venting system should your furnace have.
That depends on whether you have a standard efficiency or a high efficiency furnace.
Should my furnace flue pipe go through the roof or the side of the house.
Example of high efficiency furnace venting on a roof.
Also known as the type b this vent is operating on the natural air convection.