We want to buy a portable air conditioner for our finished atticThe floor is 450 sq ft, but the ceiling slopes up both sides from the floor to almost the centerHighest ceiling height is 7 ft.The charts say 450 sq ft needs 10,000 - 12,000 BTU air conditionerIt seems logical to me, however, that since the actual volume of air in the room is likely only 60% or so of a standard 450 sq ft room, that maybe we only need a 7,000 - 8,000 BTU unit.Is this true in actual practice?(We'd like to minimize cost.)Thank you.
I would roast them on a sheet tray, NOT a casserole dishUncoveredIf they were to be covered the instructions would have said as much.
remember that heat travels up, an attic will always be the hottest room in a house, regardless of the insulationget the most powerful unit you can afford, a 240v 12,000btu or more unit would be bestAlso consider that a powerful A/C will cool the room much faster, and therefore will need to run less time than a weak unit, less run time saves wear and electricity.
