A factor in selection is the 120 000 btu furnace square footage capacity as is cubic footage where ceiling height and adjacent open areas are taken into account.
120000 btu oil furnace.
For cooler climates a very broad estimate of furnace sizing is to select one that generates 40 to 45 btus per square foot.
Comfort aire 83 afue 125 000 btu lowboy rear flue oil hot air furnace model olrb125 d5 3a 2 041 25 2 041 25.
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If your winters include a lot of snow north winds and bone chilling temperatures you need the capacity and efficiency of a 120 000 btu furnace.
The same size furnace at 95 will give you 95000 btus of heat.
At 40 to 45 btus per square foot you d need a 100 000 to 112 500 btu.
The amount delivered into the space will be the input minus the efficiency loss also know as the output.
90 000 btu input x 93 efficiency 83 700 btu actual output.
Royalton 88000 max btu input natural gas 95 percentage upflow horizontal variable speed 2 stage forced air furnace.
Out of stock online.
Winchester 120 000 btu 95 efficient single stage multi positional residential gas furnace with ecm blower motor model tm9e120d20mp12 2 143 00.
Huge selection of 150000 btu oil fired hot water boilers.
New comfort aire 83 afue 135 000 input btu front flue oil highboy hot air furnace.
The maximum amount of heat that the unit can produce.
Buy 160000 btu oil fired hot water boiler direct and save.
For this example using an 80 efficient furnace the 1900 square foot home above would require a 90 000 btu input furnace that produces 72 000 btu s of heating which is close enough to the 76 000 btu s required using the climate heating factor.
The maximum amount of heat that the unit can produce.
However selecting a gas or oil furnace isn t a one size fits all decision.
The amount delivered into the space will be the input minus the efficiency loss also know as the output.
American standard home furnaces are designed to help keep your home warm and cozy during the colder seasons.
Each furnace is built with efficiency and reliability in mind so that you and your family can enjoy consistent warmth and long lasting comfort.
For example a 100000 btu furnace at 80 efficiency will give you 80000 out btus of heat.