how does a condensing gas furnace work

Condensing boilers are water heaters fueled by gas or oil. The reason its called a condensing furnace is because.

Non Condensing Versus Condensing Gas Furnaces

How Your Gas Furnace Works A pipe connects the furnace to a natural gas pipe network and the burner lights the gas after it enters.

. Just as with a standard furnace a condensing furnace filters and reheats return air from your home in a continuous looping action. Exhaust from the combustion is piped out of the furnace through the vent. In this episode of Repair and Replace Vance explains how a gas furnace works.

This is where natural or propane gas is converted into heat energy and byproducts produced from the combustion process are vented through the flue system. A condensing furnace has a second heat exchanger that takes this water vapor and. They achieve high efficiency typically greater than 90 on the higher heating value by condensing water vapour in the exhaust gases.

A condensing furnace is also known as a high-efficiency furnace. The last step in the operation of condensing gas furnaces is. If a furnace uses about one.

They do this by using two heat exchangers one for primary heat. Condensing steam captures the latent heat that is heat from the change of phase from steam into water at a rate of 970 Btu per pound of water. At the beginning of the heating process a condensing furnace works similarly to a traditional furnace.

Two Heat Exchangers Thats where a condensing furnace comes in. It has a secondary heat exchanger that extrapolates more heat. Cold air from your house enters the furnace where the burning gas warms it within the heat exchanger.

440876 views Nov 20 2017 How does a furnace heat my home. The gas and air mixture that is expelled is still very hot and that heat is lost instead of being used to heat the home. The secondary heat exchanger works just how you might imagine.

High efficiency or 90 or condensing furnaces use a set of two heat exchangers to retrieve more heat from the combustion products than their mid-efficiency counterparts. Most of this air is simply recirculated over and over but. Condensing gas furnace 90-98 AFUE A condensing gas furnace combats the issue of wasted energy through the use of a second heat exchanger.

This episode also covers AFUE furna more. The inducer fan creates a draft through your furnaces combustion chamber and heat exchanger. The exhaust pipe is attached to the inducer fan.

As the gas undergoes. Your HVAC unit sucks all the cold air from your house into. The second one works to.

The transformation of gases into vapors involves a certain level of energy consumption but it will release energy in the form of heat. In fact condensing furnaces. This unintended heat loss explains the lower AFUE rating of a standard gas furnace.

Condensing furnaces capture heat even after the combustion exhaust gases have cooled and condensed. A condensing furnace solves this problem by incorporating not one but two heat exchangers. Condensing furnaces are high-efficiency furnaces with a secondary heat exchanger that condenses hot exhaust gases in order to extract the waste heat before it wafts up the chimney.

Gas burners deliver heat into the first heat exchanger and the combustion. Because condensing furnaces are able to do more with the fuel that they consume they come with higher AFUE ratings than traditional furnaces.

Energy Star Gas Furnace Tips Utilities Kingston