Total enclosed conditioned space on all floors of a building, measured at the floor level of the exterior surfaces of exterior walls enclosing the conditioned space, is known as the “conditioned floor area,” or “CFA.”

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Does conditioned space include walls?

Unconditioned space, such as garages, basements, attics, and large storage areas, are typically not included in calculations of conditioned space because they cannot be heated or cooled from the outside of the exterior frame walls.

What is meant by space conditioning?

System that provides heating or cooling within or associated with conditioned spaces in a building, such as a chiller/compressor, fluid distribution systems (e.g., air ducts, water piping, refrigerant piping), pumps, air handlers, cooling and heating

What is conditioned and unconditioned space?

Compared to the outside, an indirectly conditioned space has a lower thermal resistance. In a building, unconditioned space refers to any enclosed area that is not conditioned directly, or indirectly.

Is a garage a conditioned space?

To meet the IRC’s minimum 12-in.-thick drywall or material with equivalent fire-resistance requirements, garage walls and the walls supporting living space above them must be covered with at least the same material on the garage side as the living space above.

Does conditioned floor area include basement?

The areas of your home that are heated and/or cooled are referred to as conditioned floor area. The main living area and possibly the finished basement will be included in this. Those are all examples of things that shouldn’t be included.

Is a basement a conditioned space?

The basement has been completed and ducts have been installed to cool the area. Unfinished, but rooms that are directly connected to it are being conditioned and supplied with air via indirect ventilation. Storage or mechanical rooms in an unfinished basement, for example, are examples of this.

What is an indirectly conditioned space?

Enclosed space within a building not heated or cooled space, whose area-weighted heat transfer coefficient to heated or cooled space exceeds that to the outdoors or to unconditioned space, or through which air from heated or cooled spaces is transferred at a rate that exceeds the air flow rate through the space…

What is a conditioned basement?

Basements with Heating and VentilationHaving a heated basement, whether intentionally or as a result of a heating system, water heater, or other heat-producing device, is known as having a conditioned basement. It’s possible to achieve a comfortable living temperature in the basement by heating it on purpose.

What is an unconditioned room?

In a building, a space that is not directly or indirectly conditioned is referred to as a “unconditioned space.”

What is conditioned square footage?

All enclosed conditioned space on all floors of a building is counted as conditioned floor area (CFA).