Well mainly it s a way to save space.
Attic truuses being installed.
The energy savings touted by unvented attics can be as high as 20.
Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.
However if moisture is able to enter the unvented attic space it may lead to roofing panel issues.
Attic hvac systems save space.
An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.
So why put an hvac system up in the attic at all.
If the existing joist system is very close to being sufficient to support a new attic flooring the addition of bridging between the joists may be all that s required.
Attic trusses create a free room or rooms.
An attic s intake vents are most commonly installed directly in the soffit either as individual vents spaced every few feet or as one continuous perforated soffit running the entire length of.
Unventilated attics can help to mitigate energy loss through leaky ducts or ceiling fittings.
The structure should be sufficiently wide to allow for a loft and attic spaces the loft area must be on a living floor and have attic rooms on both sides separated by knee walls a flat ceiling in the loft area and a floor below steep enough roof pitch to provide appropriate ceiling height for the loft area.
My friend loren power will be the first to tell you that i made a mistake on his house.