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Furnace
Terminology ..
If
you're in the market for a new gas furnace, do you know the
differences between a conventional, induced draft, and
condensing furnace?
If
you don't, you should because your choice of furnace design
will have an effect on its efficiency, and that, in turn, will
have an effect on your annual heating costs.
All
gas furnaces consist of four main components: burners where
the gas is delivered and burned; heat exchangers that transfer
the heat from the burners to the home's air distribution
system; a blower that moves the heated air through the ducts
and into the home; and a flue that exhausts the gaseous
byproducts of combustion to the outdoors.
The
four components form the basis of the three most common types
of gas furnaces: conventional, induced draft, and condensing.
Conventional
furnaces burn natural or propane gas to provide
heat to the heat exchanger. Indoor air flows around the heat
exchanger to be heated and then circulated throughout the
house through the ducts. Additional air is drawn into the flue
for venting purposes. This air mixes with the hot exhaust
gases and exits through the chimney.
Induced
draft furnaces are similar to conventional furnaces
except for their venting method. Conventional furnaces draw
air through an opening in the front of the furnace and at the
flue to create a natural draft. Induced draft furnaces use a
fan to draw the combustion products through the heat
exchangers and then into the flue. This artificially created
draft increases the efficiency of the furnace.
Condensing
furnaces contain a second heat exchanger that
collects heat from the hot flue gases, yielding additional
heat for the home. Because the resulting flue gases are at a
very low temperature, they can be vented directly outdoors
through a plastic pipe that can run through a side wall.
Condensing furnaces are the most efficient on the market.
If
you still have questions about gas furnaces, contact Corley
Controls. We can answer them for you and recommend the best
heating system for your home.
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Call
(704) 598-2677 today ...
to
have one of our professional technicians show you how we can
lower your utility bills and improve the comfort of your home!
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here to schedule an appointment 
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