Attic Furnace Requirements

So why put an hvac system up in the attic at all.

Attic furnace requirements.

Air ducts lose a fair amount of heat through leakage so shorter lengths are more efficient. The opening passageway must allow for unobstructed access. Attic furnace passageway minimum dimensions requirements. It will not require long lengths of pipe to deliver heat to the rooms as a basement furnace does.

30 inches high 762 mm 22 inches wide 559 mm 20 feet max length 6096 mm. 904 10 furnace upright and horizontal. That means you have higher energy costs and less efficiency since you re blowing the air down instead of allowing it to rise naturally. If you place the furnace in the attic then you must install the infrastructure in the building to force the warm air to the bottom floor.

The passage must not be smaller than 30 high x 22 wide and no longer than 20 unless it s at least 6 tall and then no more than 50 passageways must have a solid floor no less than 24 wide. Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts. Attic hvac systems save space. The total drop in efficiency can be up to 35.

Well mainly it s a way to save space.