Real estate news By Inman News
Feb 23, 2007, 4:00 am PST
If you're remodeling or adding on to your home, one of the
considerations you'll be facing is how to heat that new
space. Options abound, from individual wall heaters to radiant
floor systems, but if your home already has a central heating
system, chances are that simply adding a new duct run to
the existing system will be the easiest and most cost-effective
A central heating system is a very easy thing to visualize.
A furnace uses electric coils or the combustion of fuel
to heat the air within it, and a fan then pushes the warm
air through a series of tubes, called ducts, into the individual
rooms. As the fan pushes air out of the furnace, it also
needs to draw more air in, so a return duct is also provided
within the heating system. The return duct pulls air from
the house and directs it back to the furnace, where it is
re-warmed and redistributed in an endless loop.
A furnace and duct system is a carefully designed arrangement.
The furnace needs to be of sufficient size to heat all the
air within a particular home, and the ducts need to be large
enough to deliver an adequate volume of air to each room.
If the duct going to one room is too small, the room won't
get enough heated air to sufficiently raise its temperature.
If the duct is too large, the room may get overheated, or
the large duct may rob enough air from the rest of the system
that the other ducts won't have sufficient volume to heat
their assigned rooms.
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