Roof Top High Efficiency Furnace Venting Options

Example of high efficiency furnace venting on a roof. Should my furnace flue pipe go through the roof or the side of the house. 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.

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The fan works in conjunction with the furnace usually turning on before the furnace starts.

Roof top high efficiency furnace venting options.

That depends on whether you have a standard efficiency or a high efficiency furnace. This high efficiency venting system must be installed when you install the new furnace. If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof. A high efficiency furnace uses a different type of venting system because it extracts the heat that remains in those combustion gases before venting the resultant mixture of water and carbon dioxide.

If your furnace has an afue rating of 90 or lower it probably exhausts the gases though the flue pipe on your roof. The two pipe system is most common in home heating applications. It is classified as type bh venting. Also known as the type b this vent is operating on the natural air convection.

Two pipe or direct vent systems and single pipe systems which have non direct venting. Explaining the difference of exhaust venting in a high efficiency furnace versus a standard efficien. Types of high efficiency furnace venting systems there are two types of condensing furnaces. 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. Another problem is that flue pipes that go through the roof tend to be less efficient. 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.

So which type of venting system should your furnace have. Due to the condensing nature of a high efficiency furnace its venting must be made of a material that is resistant to corrosion. High efficiency furnaces take advantage of the heat in the combustion gases that are wasted in natural ventilation systems. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner.

When the vent is withdrawing air from the house it expels the gas outside through the vent.

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