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Guide
How to find your air purifier or vacuum model number
Buying a compatible part goes wrong in exactly one place: the model number. Get it right and the match is certain; guess it and you own a filter that doesn't seal. Here's where each brand prints it.
Where to look
- Air purifiers — a sticker on the base or back, and printed inside the filter door. Levoit uses "Core 300S / LAP-C301S"; Winix prints "5500-2" on the back; Coway uses "AP-1512HH".
- Robot vacuums — under the dustbin or on the underside. Roomba shows "i7", "675", etc. The filter generation (i/e/j vs 600 vs 800/900) is what matters, not the trailing letters.
- Toothbrushes — on the handle base or the box. What matters is the fitting: Sonicare click-on vs Oral-B push-on vs Oral-B iO (magnetic, different heads).
Don't confuse these
The filter part number (e.g. "Core 300-RF", "115115", "HRF-R3") is not the device model — it's what you're replacing. Both help; the device model is the safest input to our checker.
Still unsure? Run the model-match checker — it accepts the common aliases, or email us a photo of the label.
Find the part for your model →
FAQ
Is the filter number the same as the model number?
No. The device model (like Levoit Core 300) tells you which filter fits; the filter number (like Core 300-RF) is the part you replace. Either works in our checker, but the device model is safest.
My purifier has two numbers — which one?
Use the one on the base sticker that matches the brand's product name (Core 300S, 5500-2, AP-1512HH). The other is usually a manufacturing or SKU code.