How Do High Efficiency Furnaces Work
How Do High Efficiency Furnaces Work. Once the thermostat detects the temperature you've set, it shuts the unit off. The furnace creates heat, recycles what it doesn’t use, and uses the waste in a secondary heat exchanger, then finally exhausts what is left.
High efficiency furnaces are those with the very highest afue ratings: This rating tells you how efficient that particular unit is at turning fuel into heat. The higher the afue rating, the more efficient the furnace, with the best systems having a 98% rating.
Once The Thermostat Detects The Temperature You've Set, It Shuts The Unit Off.
This secondary exchanger removes most of the heat from the exhaust. For instance, a 98% efficient furnace is turning 98 cents of. The higher the rating, the greater the percentage of energy used by the furnace goes directly into heating, as opposed to being wasted in inefficiency and similar problems.
There’s A Combustion Chamber In The Furnace Where The Gas Is Ignited, And That Heat Is Circulated With The Cold Air Before Being Redistributed Through The Vents Into The Home.
The key to furnace efficiency is the second heat exchanger. The more efficient the unit, the more heat is generated, and the less money wasted in terms of heating dollars spent. In a traditional furnace, some of the heat that could be used in the home escapes with exhaust gasses.
High Efficiency Furnaces Are Those With The Very Highest Afue Ratings:
The second chamber collects any gas fume runoff that would usually just escape out of the flue, condenses it into a liquid and repeats the burning process to generate heat. More than being energy efficient, these systems are safer than the conventional ones as there is a lesser chance of encountering backdrafts (wherein the exhaust gases are pulled. How does a high efficiency furnace work?
This Rating Tells You How Efficient That Particular Unit Is At Turning Fuel Into Heat.
A traditional furnace draws in cold air, heats it inside the combustion chamber and blows the warm air out into the home through ductwork. The furnace creates heat, recycles what it doesn’t use, and uses the waste in a secondary heat exchanger, then finally exhausts what is left. First off, high efficiency furnaces feature a second combustion chamber.
The Remaining Heat Warms Up A Secondary Heat Exchanger To Preheat The Circulating Air Before It Reaches The Primary Exchanger.
For example, if your furnace has an afue rating of 92%, it will require 92% of. Two heat exchangers the primary heat exchanger works like this: The higher the afue rating, the more efficient the furnace, with the best systems having a 98% rating.
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