If the angle of the sun is not high enough the fan will spin more slowly.
Solar attic vents pros cons.
First the air in the attic is generally warmer than in the rest of the house owing to the fact that hot air rises.
On the cons this attic fan may be too loud for some users.
It will only function when direct sunlight falls on the panel.
Solar attic fan cons.
Cons of solar attic fans there are also a number of negative points to keep in mind when you re considering installing a solar attic fan in your home.
Ad the infrared rays from the sun are powerful.
The solar fan does have its downsides.
The solar panel.
While attic fans provide the same kind of ventilation of roof vents there are a few downsides.
In some regions of the country that get a lot of rain and snow they aren t as reliable.
The most significant benefit of solar attic fans is that they operate using renewable energy.
When sunlight is blocked for whatever reason the fan comes to a halt immediately.
Solar powered attic fans use the energy from the sun to power the fan.
It will make a home become more energy efficient.
While a solar attic fan generally costs a little more than a basic electric model they do use less power.
However in arizona there s 299 days of sun on average in the phoenix valley.
My fan only works when it is getting direct sunlight on the solar panel if a cloud drifts through the sky blocking out the sun the fan stops spinning immediately as the sun sets the attic is still hot and my solar fan stops spinning.
List of the pros of solar attic fans.
If you are blowing the hot air out of your attic during the.
This option runs on a renewable energy resource.
Still it is your dependable choice if you are looking for many years of use.
The thermostat is adjustable by the homeowner and.
The solar attic fans all moved less than 1 000 cubic feet of air per minute cfm and they did nothing to lower the temperature inside my own attic.
Cons of solar attic fans.
Also if the house is leaky the fan could actively be pulling warmer air from the home or other areas of the roof.
Almost all attic fans except turbine and solar are controlled by a thermostat.
But after seeing my solar powered attic fan work i have a long list of cons.
If a solar powered fan won t work for your location you ll need to hard wire one in.
What are attic ventilation fans.
It is also more expensive versus other choices on the market are.
Cons of attic ventilation unfortunately most homes are improperly ventilated which can result in mold wasted energy ice dams premature roof system degradation rotting decks peeling paint and ceiling stains.