Venting High Efficiency Gas Furnace And Water Heater

What is vented is a residual corrosive condensate of water and carbon dioxide.

Venting high efficiency gas furnace and water heater.

Its getting its make up air from outside the reason there are two pipes. A conventional furnace vents these combustion gases through a vertical exhaust system that is attached to the furnace. All water heater venting systems use a vent duct or pipe also called a chimney or flue to bring exhaust gases from the water heater to the outdoors. Water heater power vent and a high efficiency furnace cannot be venting through the single pvc pipe types and sizes of pipes that can be used in water heater power vent systems.

The duct may be metal or plastic depending on the type of vent system. The existing vent pipe is typically too large and must be replaced with one of a smaller dimension so the water heater can heat the vent enough to ensure exhaust gases rise out of the home. When the vent is withdrawing air from the house it expels the gas outside through the vent. Exclusive rheem performance 50 gal.

If the furnace has pvc vent is is high efficiency. While there are high efficiency gas water heaters tank less units for one that utilize pvc for vents you will run into trouble trying to get the size correct for both. Most homes have a shared vent serving both the furnace water heater when the furnace efficiency is up to 80 which is today s standard efficiency gas furnace. Type l is stainless lined and used for oil and power gas heaters.

A high efficiency condensing furnace can achieve efficiency ratings of 90 or above. A direct vent system pulls in. Also known as the type b this vent is operating on the natural air convection. The difference is that a power vent water heater pulls in combustion air from the space around the appliance then uses a fan to propel the exhaust through the vent.

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. Type b due to its temperature rating can only be used with atmospheric gas water heaters. This residual liquid is highly acidic. A high e furnace has separate venting which leaves the existing vent pipe to serve only the water heater.

It uses a venting system to extract that heat before venting. All venting installations must conform with local codes. Water heater ducts may lead directly outdoors or they may tie into a larger vent duct that also serves a gas or propane furnace or boiler in the home. Best seller rheem performance platinum 9 5 gpm natural gas high efficiency indoor tankless water.

Type l vent is double walled vent. Pvc vent pipe water heater power vent system cannot be connected to the regular chimney or share venting with other appliance e g.