Solar Ventilation vs. Wind-driven Ventilation: Which Is Better?

Suppose you own a business and you have a choice between two employees: One who shows up for work on a regular basis and provides consistent, reliable results, and one who shows up now and then and works only occasionally, with highly variable results. Of course, you’d pick the first employee who offers the most benefits for your business – and the least amount of frustration and disappointment.

Believe it or not, choosing between a solar-powered fan ventilation system and a wind-powered vent is somewhat similar: Wind vents are only effective when the wind is moving; occasional gentle breezes, as enjoyable as they may be while you’re spending time outside, aren’t going to do much for moving the hot air and humidity out of your home.

On the other hand, Solatube’s Solar Star roof ventilation system uses a solar-powered fan that’s designed to move large amounts of air any time the sun is shining – even on partly cloudy days and days when there’s no wind at all. In fact, in the heat of midday when barely a breath of air is moving, your solar-powered fan will be hard at work, cranking out the heat and humidity from your home to help make every floor of your home more comfortable. It will also ease the burden of your air conditioning system, so it doesn’t have to work as hard or use as much electricity.

Solar Powered Roof Ventilation

Solar Powered Roof Ventilation

Why is consistent air movement important?

In the hottest months of the year, your attic space can reach temperatures of as high as 60 degrees Celsius, and although hot air wants to rise, when it’s trapped by your roof, it winds up heating the air on the lower floors instead. All that trapped heat can create significant problems with your roof, causing extreme heat damage to shingles and underlay. Plus, if the weather turns humid, the air inside your attic can become damp, providing an ideal place for mould and mildew growth.

Keeping the air in your attic moving and giving it some place to escape is critical to helping maintain the integrity of your roof, as well as maintaining comfort in your home. In addition, by removing damp, humid air and encouraging air movement, a Solar Star ventilation system can be a powerful ally in preventing damaging and unhealthy mould growth.

Just how good is a Solar Star ventilation system?

Very good. In fact, comparison testing of the Solar Star and traditional wind vents using Australian Standards has shown on relatively calm, sunny days, the Solar Star can remove hot, humid air at rates from 1080m3/hour to 1800m3/hour – or about the same amount as 10 to 15 wind vents! That means you’d need to cover your roof with wind vents to achieve the same effect as just one Solar Start unit. By comparison, a popular “off-the-shelf” wind vent ventilator would move just 90m3/hour based on an 8 km/hour wind speed.

If you’re considering an economical way to keep your home cooler, drier and healthier, the Solar Star roof ventilation should be at the top of your list. To learn more about the Solar Star and how it can help you keep your home cooler and drier, contact Solatube to find a dealer near you.