Attic Furnace Dimensions

An attic in which a fau is installed shall be accessible by an opening and passageway 30 x 30 in size.

Attic furnace dimensions. Some products like furnaces may also be affected by installation orientation horizontal upflow or downflow or even by the nozzle used in installation as is the case with boilers and oil furnaces. To prevent homeowners from building strangely configured and potentially dangerous spaces. Upright furnaces shall be permitted to be installed in an attic furred or under floor space. Floor space dimensions.

At least 7 feet in any direction. For instance a clog in your drain line can cause condensation from your ac unit to back up and spill out over the catch pan leading to mold in your insulation and drywall rotting attic floor joists and ceiling leaks in the rooms below your attic all things you don t want for your home trust us. In one scenario this would translate to a bare minimum of 7 x 10. Would still not be allowed because its 4 x 17 5 dimensions.

Obtain the furnace manufacturers installation instructions and install the furnace to their specifications. Establish the best location for installation of forced air unit and vent. If a furnace is listed with an input rating of 100 000 btu s and an efficiency rating of 80 it would produce. 100 000 btu input x 93 efficiency 93 000 btu actual output.

The 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches. 30 inches high 762 mm 22 inches wide 559 mm 20 feet max length 6096 mm. As an example a floor space that totals 70 sq. Exceeding 5 feet 1524 mm in height provided the required listings and furnace and duct.

If the same 100 000 btu furnace has an efficiency rating of 93 it will produce. An example you can reference. Overall efficiency p efficiency within a model group will tend to vary by the size capacity of the unit. Horizontal furnaces shall be permitted to be installed in an attic furred.