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If the exhaust pipe is blocked or broken, harmful gases can get into your home’s air. In this article, I’ll explain what a furnace’s exhaust pipe is for. I’ll also discuss what factors you need to consider when venting a furnace, and how to identify a furnace by its exhaust pipe.
Amerivent® Class B gas vent uses a double wall of metal pipe for insulation and safety. The inner pipe efficiently contains the warm flue gases. The air space between the inner and outer pipes provides insulation to keep the flue gases on the rise.
In this guide, we will walk you through the basics of furnace venting, including natural vents, flue pipe, combustion air, and exhaust pipe, and why they are crucial for efficient heating in your home.
High-efficiency condensing furnaces require special plastic vent pipes, as well as a plastic drain pipe to drain condensate created by the furnace.
Most high-efficiency furnaces have two pipes coming out of the wall; one to bring combustion air into the furnace and the other to blow exhaust gases back out. It’s important for the exhaust gas to not get sucked back into the furnace, so manufacturers will usually give several ways to do this.
You can vent a gas furnace in three main ways, i.e., natural venting, sidewall venting, and concentric venting. 1. Natural Venting. Natural venting, also known as Type B venting, was the most common venting method back in the day. It involves attaching a natural vent pipe to the furnace and running it vertically through the roof.
How to replace a gas furnace flue roof vent by replacing the flue vent pipes, storm collars and rain caps.
Concentric venting describes a coaxial “pipe in pipe” venting design where the exhaust gas and intake air vent through a shared pipe assembly. Thus, it offers an aesthetic and more straightforward furnace ventilation solution with just one hole through the wall or ceiling.
By selecting the appropriate venting route, installing vent pipes and components correctly, and conducting thorough safety checks and testing, homeowners and HVAC professionals can mitigate the risk of hazards and optimize furnace performance.
Irrespective of type, gas furnace vent pipes help achieve one objective; the removal of toxic combustion gases from a home or building. Now, there are three main types; the natural vent, direct vent, and sidewall power vent.