Fanno
An air purifier makes one of the plainest sounds in a house: a soft, even hush of air drawn through a filter, with no rhythm in it at all. Some people keep one running in the bedroom as much for the sound as for the air. This page plays Fanno’s air purifier live in your browser, and it never loops.
No blades, no pulse
In a real purifier the fan is tucked inside a case, behind the filter, so you don’t hear blades sweeping past. What reaches you is the air itself, evened out on its way through. Fanno’s air purifier works the same way. It’s the only one of its four fans with no blade rhythm and no motor hum: just a steady wash of air with a little room around it. In the app’s Settings drawer, its display calls it a soft, even hush.
For people who hear the beat
Every bladed fan has a pulse, the soft wub of each blade going by. Most people stop noticing it. Some can’t: once they hear the beat, they keep following it. If that’s you, the purifier is the one to try. There’s nothing in it to count, so it slips into the background the way a fridge does, noticed only when it stops.
The same smoothness makes it easy to share a room with. A steady hush softens a partner getting up early, a dog shaking its collar or footsteps on the stairs, and it has no pulse of its own for anyone to pick up on.
Setting the purifier
This page plays it at speed 6 on Pink, which keeps the hush soft and full. A real purifier might have three or four fan settings; Fanno’s dial has ten click-stops, so in the app you can find the level in between. Turning it up adds air and opens the sound out. Turning it down brings it to a quiet hush you’d barely notice from across the room.
The tones work here too:
- Pink, where this page starts, is the gentlest balance.
- White gives a crisper, cleaner hiss, closer to air pouring out of a vent.
- Brown turns it into a low, deep rush, like a big unit running in the next room.
The smoothest setting in Fanno
In the app, the Blade texture fader brings a fan’s blade rhythm forward or smooths it away. The purifier has no blades to hear, so the fader leaves it as it is: it’s already as smooth as Fanno gets. If you like a bladed fan but want it closer to this, pick the box fan or the desk fan and slide Blade texture down toward 0.
Because Fanno makes the sound as it plays, the hush shifts very slightly over time instead of repeating a clip. That matters most with a sound this plain, where a loop would be easy to hear.
All night, in the app
On iPhone, a web page goes quiet when the screen locks. The free Fanno app keeps the purifier running with the phone locked, with play and pause on the Lock Screen. Its timer knob fades the sound out after 15, 30 or 45 minutes, or after 1 or 2 hours, and night mode darkens the panel for a dark room. All four fans and all three tones are in it. No ads, no account and no data collected; it works offline, on iPhone and iPad.