Well mainly it s a way to save space.
Visual heat attic.
An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.
So why put an hvac system up in the attic at all.
Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.
However there s a problem.
Scan your roof monthly for deteriorating shingles and missing or broken flashing.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
Attic leaks develop slowly over time.
An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.
Air leakage attic condensation fiberglass heat hvac insulation moisture mold ventilation wood moisture content abstract this project investigated the thermal and moisture performance of a low cost approach to sealing and insulating attics using glass fiber insulation.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be.
Visual inspection can go a long way to heading off these problems.
And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.