how does a condensing gas furnace work

Condensing gas furnaces have two heat exchangers the second capturing the extra heat and putting it to work. High-efficiency furnaces are often known as condensing furnaces because they have a second heat exchanger that extracts additional heat from the air that passes through the first heat exchanger.

What Is A High Efficiency Condensing Furnace St Louis Hvac Tips

A condensing furnace has a second heat exchanger that takes this water vapor and exhaust gas and squeezes more heat out of those fumes.

. How does a condensing furnace work. Heat will be delivered to the first heat exchanger where combustion will take place. What is vented is a residual corrosive condensate of water and carbon dioxide.

This episode also covers AFUE furnace effic. In fact condensing gas furnaces can have AFUE ratings of 90 to 98 meaning they are around 10 to 20 more efficient than standard non-condensing furnaces. 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.

The heating cycle begins with the thermostat which detects when temperatures drop inside your home. A condensing boiler takes water from the pressure supply mains. At the beginning of the heating process a condensing furnace works similar to a traditional furnace.

Your HVAC unit sucks all the cold air from your house into the furnace where the burning gas warms it via a heat exchanger. Gas burners deliver heat into the first heat exchanger and the combustion process leaves a byproduct of hot water vapor. While the condensing furnace is different in its design and repair needs it does have some similarities to a conventional furnace.

Like a conventional furnace it takes in cold air from the house and runs it through an air filter. Burners inside the furnace ignite creating heat thats captured by the heat exchanger. Then you pump it to the hot water tank where it can stay hot for some time until you need it.

The thermostat activates the furnace. A high efficiency condensing furnace can achieve efficiency ratings of 90 or above. Considering this how does a condensing gas furnace work.

This makes a condensing boiler a better option than a combi boiler especially for a large home. Are condensing furnaces worth it. This residual liquid is highly acidic.

That water vapor is next sent to the second heat exchanger where it is condensed and turned into a liquid. Conventional gas furnaces burn gas via one heat exchanger so that the excess heat can escape either through walls or a chimney in vapor form. It moves the air with a circulating fan.

The function of a condensing furnace is similar to a regular fuel-based forced-air furnace. This heat-extraction processes caused water vapor to condense out of the air which is drained away through a tube that is usually placed in a floor drain. When a gas turns into a liquid it releases heat.

This allows them to make more use of the energy that they consume and can significantly reduce their operating costs. High-efficiency furnaces also known as condenser furnaces use dual heat exchangers. At the beginning of the heating process a condensing furnace works similar to a traditional furnace.

Gas burners deliver heat into the first heat exchanger and the combustion process leaves a byproduct of hot water vapor. Gas burners deliver heat into the first heat exchanger and the combustion process leaves a byproduct of hot water vapor. There are two types of gas furnaces conventional and condensing.

It uses a venting system to extract that heat before venting. 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. In this episode of Repair and Replace Vance explains how a gas furnace works.

And it has a gas burner with electronic ignition although condensing furnaces may have more electronic. How Your Gas Furnace Works. What is condensing gas furnace.

Condensing furnaces have a second heat exchanger that is able to extract extra heat from that water vapor that would normally be vented out of your home. Once the thermostat detects the temperature youve set it shuts the unit off. As a result of this first process water vapor will be a by-product of the process and will be taken to the second heat exchanger.

The water is heated in the heat exchanger until it reaches the correct temperature. The blower fan pushes the heated air and circulates it around the space in a high-efficiency furnace the blower has variable speed for best air control. When a gas turns into a liquid it releases heat.

At the beginning of the heating process a condensing furnace works similar to a traditional furnace. Condensing furnaces are more energy-efficient which means they cost you less to operate. The exhaust from the combustion is sucked out of the furnace via the vent.

A pipe connects the furnace to a natural gas pipe network and the burner lights the gas after it enters. The heat-extraction process with the secondary heat exchanger is so remarkably efficient that the hot exhaust gases are cooled to the point where they can safely exit your home inside a plastic. As the heating process begins a condensing furnace will work in the same way as a traditional furnace.

Sequence of operation and effect of failures on the 90 AFUE efficient gas furnaceThis video is part of the gas furnace series of training videos made to a. How does a furnace heat my home. The result is a much more energy-efficient heating system.

It will ruin the standard venting equipment that is used in conventional gas furnace ventilation systems. Difference between non-condensing and condensing furnaces.

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