Did You Know? This Hidden Feature Helps Prevent Moisture in Your Dryer Vent
At first, it caught us off guard — customer after customer telling us:
“I’m getting moisture buildup in my dryer, especially during humid weather.”
The dryer wasn’t even running. So why was water showing up?
After a few calls, we dug deeper. The issue? Trapped pressure in the vent line. When the dryer shuts off — or when indoor air pressure shifts (like when you open the front door) — air can get stuck. That trapped air holds moisture, and without a way out, it cools and condenses inside the dryer or duct.
So We Engineered a Simple Solution.
We designed The One Flap™ with a lightweight, pressure-regulating damper that flutters open and closed in response to changes in the system — even mild shifts like opening a nearby door. That slight flutter? It's not a flaw.
It's your system breathing.
This soft-opening feature:
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Releases trapped pressure after the dryer shuts off
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Helps prevent moisture buildup during high-humidity days
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Keeps air moving so stale or damp air doesn’t sit inside your vent
Instead of forcing a sealed system to stay closed 24/7, The One Flap™ reacts to your environment — giving just enough movement to keep things dry, but staying sealed when it matters.
A Vent Cover That Listens to Your House
It's not just a flap. It’s a built-in pressure relief system that helps extend the life of your dryer, reduce mold risk, and keep your vent system healthier.
Got moisture issues in your vent? You might not need a new dryer —
you might just need The One Flap™.