What Size Solar Attic Fan Do I Need? How to Match a Fan to Your Attic, Shed or Container
Measure the space, divide by CFM, and size the intake first. Here's how to pick the right solar fan for an attic, shed or shipping container.
Free US shipping on orders over $144.98 to the lower 48 states*.
Practical expert guides on attic ventilation, mold prevention, energy savings, and solar-powered ventilation for homes, sheds, containers, and warehouses.
Measure the space, divide by CFM, and size the intake first. Here's how to pick the right solar fan for an attic, shed or shipping container.
The shingle almost never fails first. The attic does. A roofer with forty years of tear-offs explains why modern, tightly sealed homes have made attic ventilation harder, why the high-CFM...
In 2013, every solar attic fan on the market was competing on one number: CFM. Dan Rheaume argued the opposite — multiple small fans, spread across the roof, working with...
Most homeowners think of attic ventilation as a summer thing — something that keeps the house cool when the roof is baking. That's half the story. In winter your attic...
Bigger motor, higher CFM, one giant fan to cool the whole attic — it's the pitch in every hardware store, and it's usually wrong. Here's why balanced, distributed solar ventilation...
New windows. New insulation. A new HVAC system. All of them promised to cut your energy bills — and none of them fix the actual problem. On a sunny summer...
Every time you take a hot shower, moisture doesn't just fog your mirror — most of it migrates upward through your ceiling and into your attic. Learn why your bathroom...
More airflow doesn't always mean better airflow. Discover why the roofing industry is shifting away from single high-CFM fans and toward distributed solar ventilation — and what that means for...
Your insulation's R-value was tested in a lab — zero moisture, zero wind. The moment moisture enters your attic, that number starts dropping. Here's what's really happening up there, and...