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Whether
you are looking to buy portable ac units or thru the wall air conditioners
or a central air unit appropriate air conditioner sizing is one
of the most important aspects in finding the appropriate cooling
unit for your home. Air conditioners that are too small will not
have sufficient cooling capacity to cool the space. Air conditioners
that are oversized will use energy inefficiently and will cost more
money in the long run, without increased cooling. Keep in mind that
you will also need to determine the proper size for a furnace when
purchasing a combination gas heat and ac unit.
An easy way for a homeowner to determine the proper
size for an ac unit is to follow the manufacturer’s guidelines.
Manufacturers generally will specify the number of BTUs that are
provided and the amount of space that is optimally cooled by the
unit. Another way to calculate the AC size is to hire a contractor
to calculate the best size cooling unit for your space. Calculations
are based on a precise scientific method and will vary depending
on the room dimensions and the intended usage for the space.
If you do the calculations for sizing an ac unit
you will generally need to take into consideration room dimensions,
number of people who will occupy the room, and the square footage
of windows and doors (shady, sunny, glass and non-glass). Additionally,
if the room is occupied by computers this equipment will typically
expend a large amount of heat; therefore, rooms containing computer
equipment will have slightly different calculations to account
for the total wattage used for lighting and equipment. Calculations
will also account for rooms that are kitchens or which otherwise
contain heat producing appliances.
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