The problem with this design as argued by energy professionals is that attic fans also pull the conditioned air from your home into the attic.
Do attic fans work in florida.
Depending on these things and a few other factors it is possible that your solar attic fan can save you enough on the cost of utilities to have paid for itself in as little as one or two summers of use.
After attic fan installation ac still off during day.
Fresh air is pulled in from your soffits and or roof vent creating a draft through your attic.
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.
Ideally this will lower the high temperatures that have built up in your attic.
How solar attic fans in florida differ from full house fans.
Instead of installing a fan just make sure your attic is well ventilated.
Temp 92 f at 5pm.
Some experience 30 lower cooling costs by using an attic fan.
When the university of central florida s florida solar energy center tested homes they found that air leaking from a home s duct system can cause negative pressures within the home s interior when the air.
Attic fans are not recommended if you have central air conditioning because when you turn the fan on in the summer it depressurizes the attic but also reaches down into your house and starts drawing off air conditioned air effectively driving up your cooling costs.
More than 50 of the attic fans i see do not work and have current still live to the motor.
Best ventilation is open soffit venting to a open vented ridge vent.
One of the leading causes for fires.
In the late evening or early morning the fan is turned on to exhaust hot air from the house.
Cooler outdoor air enters through open windows lowering the indoor temperature.
This air is then exhausted through the fan to the outside.
Before the advent of vapor compression air conditioning the use of whole house fans was a popular means to enhancing natural ventilation to achieve greater comfort in hotread the rest.
The attic fan kept my house cooler by 8f compared to pre fan installation days.
During workdays would leave air conditioner off when leaving in the morning.
An experimental study was carried out during the summer to investigate the natural cooling potential of use of a whole house fan in central florida s hot and humid climate.
How an attic fan works.
Find out whether it is economical to run an attic fan.
This was observed on numerous days following the installation.
If the air conditioner is working at the same time as the attic fan cool air from your living space is being wasted in your attic seeping through the attic access panel drywall and holes in the interior wall top plates where plumbing pipes and electrical wires feed into the attic.
Temp 84f at 5pm.
Do not use mechanical means electric attic fans.
Attic fans exhaust hot air from your attic to the outside.
