Replacement Filter Size O, 1712-0100-00 Compatible with Wini

The Verdict

Air purifiers are only as good as their filters, and if you’ve owned a Winix for more than a year, you know the replacement cost sneaks up on you. The Replacement Filter Size O (model 1712-0100-00) is the direct swap for Winix units like the A230 and several 5300-series models. After digging through the spec sheet and what 240+ buyers are saying, here’s the real picture.

What’s Actually in the Box

You get a single all-in-one filter cartridge that combines a fine mesh pre-filter, a true HEPA layer rated for 99.97% particle capture at 0.3 microns, and an activated carbon pellet layer for odor neutralization. The dimensions match the Winix OEM part exactly — roughly 15.4 x 12.6 x 1.2 inches depending on your specific model — so it drops in without forcing or shimming.

What’s notably absent: a separate washable AOC carbon filter. Some Winix models use a two-piece system where the carbon filter is replaceable independently. This Size O unit is the integrated design, so when the carbon is spent, the whole cartridge goes. That’s not a flaw — it’s just how this particular filter generation works.

Real-World Performance and Lifespan

Buyers consistently report the filter lasts the full 12-month rated cycle when running their purifier 8-10 hours daily. That’s the number Winix quotes, and it’s refreshing to see a compatible filter actually hit it rather than degrading at month eight like some generics do.

One buyer noted, “I compared this side-by-side with the Winix brand filter I took out — same weight, same carbon fill, same pleat density. I couldn’t tell them apart.” That’s the kind of feedback that matters because it speaks to manufacturing consistency, not just a one-off good batch.

The carbon pellet layer deserves special mention. It’s packed densely enough that you can smell the difference in a room with pets or cooking odors within the first week. Odor control is where cheap filters fail — they use a thin carbon coating that’s exhausted in 30 days. This one holds up closer to the full year.

Where It Falls Short

The honest downsides are modest but worth knowing. First, there’s no pre-filter included in the box. If you’re coming from a Winix unit with a washable pre-filter, you’ll need to reuse your old one or buy it separately. That’s an extra $10-15 some shoppers don’t budget for.

Second, the price sits above the no-name generics by a noticeable margin. Is it worth it? Most buyers say yes — the 4.8-star average across 240 ratings suggests people aren’t returning these for quality issues. But if you’re the type to replace filters every 6 months regardless, a cheaper option might serve you fine.

Who Should Buy This

• Winix owners who want OEM-matched performance without paying the full brand markup — this is the sweet spot.
• Households with pets or smokers — the carbon layer actually pulls odors, and buyers with multiple pets consistently rate it highest.
• Anyone who’s been burned by generic filters that fit loosely or whistle — the tolerances here are tight.

Skip it if you’re on a bare-bones budget and your air purifier is in a low-traffic room with minimal odor concerns. A generic will technically work — it just won’t last as long or filter as effectively near the end of its life.

FAQ

Q: Will this fit my Winix 5300-2? A: Check your model number against the Size O compatibility list. This filter works with the A230, 5300-2, 5300-3, and several HR900 series units. If your manual calls for part 1712-0100-00, you’re good.

Q: How often should I actually replace it? A: Winix says 12 months. If you run the purifier 24/7 in a dusty or high-pollen area, plan on 9-10 months. Watch for reduced airflow or a stale smell returning — that’s your cue.

Q: Can I wash this filter to extend its life? A: No. This is a disposable HEPA/carbon composite. Vacuum the outside surface monthly to remove surface dust, but never run water through it — you’ll destroy the HEPA media.

The Verdict

Rating: 4.6/5 — Buy it if you want Winix-grade filtration performance without paying the full OEM markup for the brand name. It fits correctly, lasts the full rated year, and the carbon layer genuinely handles odors. The missing pre-filter and slightly higher price than generics are the only real tradeoffs.

Skip it if you’re pairing it with a bargain-basement purifier you’re not sure you’ll keep for another year. But if you’re committed to your Winix, this is the replacement filter to get.

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.