Well mainly it s a way to save space.
Attic heating up house.
Addressing insulation and ventilation issues in your attic is a cost effective way.
Low cfm similar to a bathroom vent 300cfm and only in the hot spots basically by adding an inline ducting fan to the return ducts for the hotspot rooms.
Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.
Whats up in the attic the ducting for your air and cooling heating.
Nothing hvac should be outside the home envelope ducting plenum etc if so you have a problem.
One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.
Once the attic fan turns on it will draw outside air through attic vents but also cool conditioned air directly from the house through air leaks and recessed electrical lights.
So why put an hvac system up in the attic at all.
So ridge vents or static vents with soffett vents are best not the combination of soffett and gable and ridge vents is recommended.
An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.
It would need a damper to keep from losing heat when not in use.
My idea is to vent the build up of hot air that has risen to the ceiling in the hotspot rooms into the attic so that air from cooler parts of the house can move in.
Attic heating up the rest of the house.
This is a coating material that gets sprayed onto the outside of your roof to help reduce the amount of heat that is radiated into your attic.
Your attic is the most susceptible room in the house for this.
When your system itself is in the attic however you don t have to worry about this because your ducts won t have to run all across the attic.
Attic heat plays a key role in the temperature of your home during the summer.
Try warming up to an electric heating system.
Without adequate insulation and ventilation heat inside your attic can cause your air conditioner to work harder and increase your energy bill.
If you had a thermostat in the house and in the attic so that it would only run when you need heat and the attic is hot.
An article titled powered attic ventilators unplanned impacts on houses published in 1996 by john tooley and bruce davis drew the conclusion that powered.
Attic hvac systems save space.
Since you ll be using less material shorter ducts won t cost you as much as longer ones.
There will be a lower cost for parts.
The air you lose from the attic is then drawn into your home from the outside which will cause your cooling bill to go up.