Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
My attic feels cool in florida.
Again i m assuming that you re not considering a sealed attic lowering the temperature of an attic that contains ducts can reduce your air conditioning costs.
So if there are leaks along the ductwork that allow cold air to escape into the attic or basement your home won t get as much cool air as it needs to reach your set temperature.
The best option for insulating florida homes is spray foam insulation which has a high r value and is water resistant.
For the same reasons we just went over energy escaping your home will make your energy bills skyrocket.
In existing homes the question is important.
When the hot humid attic air contacts the cold duct or the cold duct boot the moisture in the air condenses on the cold surface just like the condensation that happens on a cold can of beer.
Take its temperature.
Florida homeowner s guide to adding attic insulation january 22 2014 if you have a home built before 1982 your home s attic is probably under insulated.
If you want to cool your attic proper insulation is the best place to start.
Install electric ventilators and attic fans which remove hot air from an attic.
Hang an outdoor thermometer in your attic making sure its range.
Excessive heat deteriorates items you store in the attic and can cause moisture problems in your house.
Spray foam insulation applied to your attic ceiling can reduce and prevent water damage caused by rain water.
Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape.
Intake vents located at the lowest part of the roof under.
Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.
They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.
The air in your vented attic is hot and humid just like all outdoor air in florida.
Air ducts with leaks allow conditioned air to escape into unconditioned areas i e.
There are two main ways to solve this problem.
Your air ducts deliver cool air to different areas of the home.
This is no good since an under insulated attic will.
Missing or inefficient insulation in the attic means that cool air in your home can easily escape.