A clean filter is light. As it traps impurities, it darkens. EyeOnFilter reads that color change and tells you the moment it's time to replace — from anywhere.
Most water filters sit in a basement corner or under a sink. You're supposed to inspect the color regularly to catch when it's spent — but who actually trudges down there to eyeball a cartridge?
So filters get changed late (bad-tasting, less-pure water) or blindly on a schedule (money wasted on cartridges with life left). Neither is right.
As impurities accumulate, the cartridge darkens. EyeOnFilter maps that exact color to a status and alerts you at the threshold.
The sensor sits against the clear or transparent area of a compatible whole-house water filter housing. Its LEDs shine onto the cartridge; the color sensor reads the reflected light through a lens.
Open the app, enter your home Wi-Fi during a one-time setup, and the sensor registers itself. No hub, no wiring — it joins your network directly.
The sensor sleeps to conserve power, then wakes about once daily, captures the filter's color, and reports dirty / not-dirty over Wi-Fi. That's why the batteries last years.
When the color crosses the dirty threshold, the app notifies you — wherever you are. Tap through to order a replacement cartridge on the spot.
Whole-house water filtration systems with a clear or transparent filter housing. Catch a darkening cartridge before water quality drops.
Monitor a filter at your vacation place or a tenant's unit remotely. Get alerted from across the country, arrange a swap before anyone notices.
The same color logic flags an empty soap dispenser or a low birdfeeder. One method, many jobs — wherever a color change tells the story.
A clean/watch/replace indicator for each filter, named by location. "Summer House" filter dirty? You'll know.
Toggle day / week / month / year to see how fast each filter loads up and predict the next change.
When a filter hits dirty, the right cartridge is one tap away — no hunting for the model number.