A world about solar powered attic ventilation
Why should you consider having a Solar Attic vent installed in your roof?
As we rely more and more on fossil fuels and electricity, perhaps there are some simple ways in which homeowners can be less dependent on expensive and non-environmentally friendly forms of energy. We think you will agree that solar powered attic ventilation is one of them.
Our climate is changing dramatically, winters are not as cold as they once were and summers tend to be extremely hot for longer periods of time. With these temperature fluctuations, your roof and attic are exposed to extreme punishment. On a hot summer day an attic can reach temperatures as high as 74 degrees Celsius.
Most of our attics use a “passive” ventilation system, which in theory is adequate but in reality is highly ineffi- cient. With passive ventilation, cool air enters the attic through the soffit areas around the house and pushes hot air out through the passive rooftop vents. Unfortunately, hot air is retained inside the attic until it reaches expan- sion (about 72 degrees Celsius) at which point it radiates heat throughout the attic and into the house as well. In older homes this problem is more severe due to the lack of soffit vents (in some cases there are none).
Another form of attic ventilation is “active”, relying on a powered device whether electric or solar. Electric devices, while they are effective, need electricity to perform. Solar devices, on the other hand, are an environmentally friendly active alternative that you should consider.
Solar Attic Vents powered by the sun will remove air from your attic with even minimal sunlight. Solar cells power a small motor that rotates a blade removing as much as 300 to 1650 cfm (cubic feet of air per minute) on a clear day. By removing the air by force the attic temperature is reduced, in some cases dramatically.
During the summer, cooling down the attic will mean longer lasting shingles and will improve the efficiency of your air conditioning system. During the winter, the attic will be less likely to store humidity, preserving the attic’s wooded components, especially plywood and reducing the risk of mould.
We are confident that the advantage of solar technology in this type of application will offer you great savings and better performance in your home.