In hot summer, what would it be if you spend all day long in your home without any cooling device?
Well, I am sure that most of people cannot bear the hot temperature.
That is exactly why you need an attic fan to help move air outdoor, it also protects your furniture and wall from being damaged by moist air.
How to choose attic fans and is it necessary to get it at home?
If you have troubles on it, please go on reading our best attic fans reviews to get answers.
What Are Attic Fans?
Attic fans are one certain device to regulate the heat level of a building or house by exhausting hot air, they are also known as ventilation fans.
For some kinds of attic fans, it has manual switch to control it on and off. However, the attic fans are normally installed high on the roof or gable, thus most types now choose automatic thermostat, it turns on and off automatically.
An attic fan can be gable mounted or roof mounted based on your different needs. Used normally in hot weathers, it cools down and exchanges indoor air effectively.
With a fan installed on attic for different purpose of cooling down whole house, it exhausts hot air effectively and quickly, which is known to be whole house attic fans. (Here we have made best whole house attic fans reviews for you if you need.)
What Is Solar Attic Fan?
Solar attic fans, suggested by their names, powered mainly by solar power. It can be installed either on device or installed independently.
In hot weathers, sun bakes on roof surface and thus accumulates large amount of heat on the roof, serving as the main power for attic fans.
Like electric attic fans, there are also two mounting types you can choose, one is for gable mounted, while the other being roof mounted.
-Roof mounted solar attic fans
Installing solar attic fans on the roof, especially when installing near the peak, sunlight heats up the heating materials on the roof, forcing hot air out and also pulling into fresh new air.
It keeps roof space and also indoor from being too high on temperature.
Roof mounted solar attic fans not only save much costs on installing and cooling, but also extend the life of shingle roof.
For best roof mounted attic fan, we would like to introduce this Lomanco BIB-12 Brown Whirlybird Turbine Ventilator type for you,
- 12-inch whirlybird turbine ventilator promises long life and requires no maintenance
- Withstands winds up to 147 mph
- 21 air-foil curved vanes with rolled vane edges to deflect water
- VARI-pitch base adjusts to a 12/12 roof pitch
-Gable mounted solar attic fans
Gable mounted attic fans are quite the same as roof mounted types, but differ in installation place.
As name suggests, gable mounted attic fans need to be installed in the gable, inside attic and behind the existing louvered gable vents. They are frequently installed in garage, rv or greenhouse, to push out heat and moisture air.
For best gable mounted attic fan, we would like to suggest this Ventamatic fan to you,
- Mount Ventilator with a 2.1 amp thermally protected PSC motor, a galvanized steel flange
- Easy to install behind automatic or static Gable Vents
- Attics up to 2,500 square feet
- Adjustable automatic thermostat
As solar serves as the only power to operate attic fans, you need to make sure that a large solar panel is used.
How Attic Fans Works
What Attic Fan Do I Need?
Choosing a best attic fan saves much time and energy for you, it helps cool down your house and also fastens the circulation of indoor air.
1. Determine installation types I need
As we have described before, there are many types of attic fans on the market, mainly divided into gable types and roof mounted types.
Gable attic fans are normally used in garage, rv or greenhouse, installed in the gable. Be sure to keep it away from prevailing winds.
Check this Air Vent gable attic fan if you like,
- 1050 CFM 1/12 HP, 180W 3.2 amps
- 14″ fan blade
- For 1500 sq. ft. max
Roof mounted attic fans are the most common types, used mainly on the roof of house, helps pushing out heat and pull in fresh outdoor air.
The best roof mounted attic fan is suggested as follow:
- 25 inch diameter metal dome
- Ventilates up to 1650 soft
- Adjustable thermostat from 60 to 120 degrees
- 4-1/2 inch diameter opening
2. Think what size attic fan do I need
To determine the size of your attic fan, you can multiply the width by length of attic floor in feet.
20′ wide by 50′ long attic: 20 x 50’=1,000 sq. ft. attic space
Next thing you need to do is to calculate the vent fan size that you need, just multiply the square feet of attic space by 0.7, in this way you get minimum number of cubic feet of air per minute.
1,000 sq. ft. attic x 0.7 = 700 CFM minimum fan rating
3.Determine using application
If you try to use it for whole house cooling, then you need to find a whole house attic fan.
For ventilation use, we would like to introduce this best attic ventilation fans for you as follow:
- 12 inch variable speed shutter exhaust fan
- Corrosion-resistant with OSHA compliant wire guards
- 120 Volts,1/20 HP,0.55 amp
- Variable speed functionality
4.Whether I want a solar type
Solar attic fans are some kinds of ventilation device, it adopts sunlight as main power to operate ceiling fans. A solar panel is used to accumulate heat.
If you are interest in such devices, the following types will be on your bet.
- 36-watt solar panel
- Moves up to 1628 cubic feet per minute
- Mount on 3/12 to 12/12 pitch roofs
- Ventilates up to 1750 CFM
- Adjustable solar panel (0°/15°/30°/45°)
- Quite brushless motor
Is Attic Fan Worth It?
Attic Fan vs Whole House Fan
|Attic fans||Whole house fan|
|Location||In attic||In ceiling of home|
You can also get detailed information through our attic fan vs whole house fan review.
Solar Attic Fan vs Electric
|Solar attic fan||Electric attic fan|
|Price||More expensive||Less expensive|
|Power||Less powerful||More powerful|
If you intend to get more detailed information on the comparison between the two types, please read our review on solar attic fan vs electric type.
Attic Fan Gable vs Roof Mount
|Gable attic fan||Roof mounted attic fan|
Actually the difference between gable attic fan and roof mounted attic fan is on their installation method. If intended for using it in garage or greenhouse, then you can choose gable attic fan. For daily home use, install it on your roof can be a perfect choice.
Attic Fan Installation Cost
Once searching on Amazon, you will find that attic fan units price range from $80 to $400, based on their performance and quality level. However, in terms of attic fan costs, the most frequently concern is about installation costs, adds on costs and also using costs.
The installation cost is also diverse for installation place,
Roof mounted attic fan — $80-$500
Some factors such as size and airflow affect installation costs a lot, though being a bit more expensive than gable types, but the installation difficulty is quite easy.
Gable attic fan — $80-$300
If there are existing gable vent, then installing it can be quite easy, and thus the installation costs are reduced to large extent. As it is equipped on vertical vent, it is less likely to leak.
In most occasions, gable attic fans are made large enough for larger cooling capacity.
Solar attic fan —$200-$500
The reason for high costs on installing solar attic fan is for its solar panel, which is used to accumulate heat and serves as main power for fans.
It produces no carbon dioxide or other negative pressure like electric attic fan do.