Solar Power Attic Fan
Solution to Attic Overheating

A solar power attic fan can be an excellent way to end your problems with an over heated attic.

If you are new to the concept and want to understand the basic problem this type of fan can solve, as well as the advantages and disadvantages of these fans when compared to other types of attic fans, you'll want to read the page I've recently finished on these fans.

Here we'll move beyond these considerations to discuss how you can choose the best fan, and what the most important considerations are when making your decision.

Solar Power Attic Fan
Know Your Facts

There are several items you'll need to know before you can choose the best solar powered attic fan for your home. All of this information will be used to help you get a big enough fan, or fans, to be sure your attic has enough ventilation. So, before you get ready to buy a fan, get the answers to the following questions:
  1. What color are your shingles? -Although you might not think this has anything to do with the matter at hand, if your shingles are dark, they will absorb more heat. So you'll probably need to add on 15% of your roof's area to your square feet calculations, in order to accurately estimate how many fans you'll need, to be sure you get enough ventilation.


  2. What direction does your roof face? Once again the connection to getting the right attic fan may not make sense to you, but to get the best sun exposure for the solar panel, it should face the south, if you're in the northern hemisphere, or if you're in the southern hemisphere, it should face the north.

    If your house faces east/west, as mine does, you will need to get a fan with a detachable solar panel. If the house faces north/south, the panel can come attached to the fan. So this is necessary information.

    If you're still lost, let me explain it a different way. If the ridge of your roof runs north/south, then the orientation is east/west. If the ridge runs east/west, then the orientation is north/south.

    If you still don't understand this concept, think about which direction the windows on the long side of your house face. If you can see the sun come up, or set from those windows, your house has an east/west orientation. If you can't see the sun come up or set from the windows that run the length of your house, then it is more likely your house has a north/south orientation.

    The solar panel must face south for maximum exposure in the northern hemisphere.

  3. How many square feet do you have on your roof? -If you have a one story house this should be the same as the square feet in your home. If you have a two story home, divide the home's square feet in half to get the square feet of the roof.
  4. What is the pitch of your roof? The pitch of your roof will determine the volume of air in your attic, as well as the type of fan that will best fit on your roof.
  5. Which color, or finish will best fit your decor? Some companies may only provide one or two different choices, but many will provide several. You need to decide whether you can go with a basic black, white, or tan, or whether you need something else.

Solar Power Attic Fan
Choose Wisely

Once you have the answers to the above questions, you're ready to begin selecting the solar power attic fan, or fans, that will best cool your attic. When comparing manufacturers, there are some additional things to consider:

  • What is the fan made of?
  • How efficient is the solar panel?
  • What is the wind rating on the unit?
  • What does the warranty cover?
  • For how long does it last?
  • What is the company's history? (The warranty is only as valuable as the stability and integrity of the company behind it. If the company goes out of business, the warranty will be worthless!)
  • Does the company make the type of fan you need? (If they only make a fan with the solar panel attached, and you need to mount the solar panel separately, that company won't work for your needs.)
  • Will they allow you to install the fan yourself, or do you need to have a professional installation? If they require professional installation, Why?
  • Will they provide anyone who has previously installed their product you could talk to? (Customers can frequently give you the best idea of a products value)
  • Will an available finish fit your decor, and how important is decor in your thinking? Do designer colors cost more?
  • Why are their fans better than the competition?

Solar Power Attic Fan
The Best for You

Once you have the answers to these questions, you'll be ready to get the best solar power attic fan, or fans, for your home.

If you've considered their advantages and disadvantages, and decided a solar power attic fan will be best for your home, using the answers to these questions will enable you to get a fan that will cool your attic effectively, lower your utility bills consistently, and reduce your carbon footprint as well.

I wish I could tell you "choose model XYZ", it will be best for you, but as you can tell by the information on this page, there are far too many variables for the decision to be that cut and dried.

Each variable can deliver a different "best" result, so each individual reader must plug in his own specifics to find what will be best for him.

I trust this information will help you find the best solar power attic fan for your home.

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