🙅‍♂️ Say no to power vents

Using a power attic vent to cool your attic may seem like a good idea.

  • But they don’t work as advertised.

Why it matters: Attic ventilation depends on balanced intake and exhaust.

  • The air leaving the attic — through a power vent, a turbine, ridge vent — has to ENTER the attic from somewhere.

🥊 Reality check: When it comes to power vents, intake is the problem.

  • I routinely re-roof houses with turbines or ridge vent that need more soffit vents.
  • Power vents require DOUBLE the soffit vents as turbines.

🙋 What if there are enough soffit vents for a power vent to work?

  • Remember this —> physics wins.
  • Just like water finds the path of the least resistance, so does air.

😮 A power attic vent is 30 times more powerful than your average bathroom fan.

  • Unless your attic floor is tightly air sealed — especially recessed can lights — the power vent isn’t just pulling air from the soffit vents.
  • It’s pulling cold air from inside your house into the attic.

✅ For your Smart Homeowner list

  • If you already have power vents, you have two priorities —> make sure you have enough soffit vents and air seal your attic floor.
  • If you have other ventilation, focus on the same two priorities … and don’t waste money adding power vents.



P.S. Happy to help you with the calculations on intake. Just shoot me an email.

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