FiltersDex

What replacement filters fit a A.O. Smith AORO-50?

The A.O. Smith AORO-50 reverse osmosis system uses 1 filter stage.

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Key takeaways

  • Reverse Osmosis system by A.O. Smith.
  • 1 filter stage: S1448RS.
  • NSF certified to reduce arsenic (pentavalent), barium, cadmium, chromium (hexavalent), and more.
  • A cheaper compatible filter set can fit the same housings - confirm its own certification before buying.
Reverse Osmosis SystemAORO-50A.O. Smith
Removes Lead

Buy the replacement filters for your AORO-50

Genuine A.O. Smith filter setThe exact replacement cartridges for the A.O. Smith AORO-50.Shop the filter set Cheaper filters that fitCompatible cartridges fit the same housings for less - confirm any NSF certification claim independently before you buy.Shop compatible filters

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Filter stages

Stage 1
S1448RS

What the AORO-50 removes

The AORO-50 is NSF/ANSI certified to reduce the following, grouped by the standard it was tested to:

NSF/ANSI 58 - Arsenic (Pentavalent)

Arsenic (Pentavalent), Barium, Cadmium, Chromium (Hexavalent), Chromium (Trivalent), Copper, Fluoride, Lead, Nitrate/Nitrite, Radium 226/228, Selenium, TDS

Filters for the rest of your home

FiltersDex covers the exact replacement filter - and what it removes - across every appliance:

Refrigerator filterswater + air, by fridge modelAir purifier filtersLevoit, Coway, Honeywell, WinixVacuum filtersShark & Dyson, HEPA + foamHumidifier filterswicks + furnace padsWater pitcher filtersBrita, PUR, ZeroWater - NSF

Frequently asked

What replacement filters fit a A.O. Smith AORO-50?

The A.O. Smith AORO-50 uses 1 filter stage: S1448RS.

Is the A.O. Smith AORO-50 NSF certified?

Yes - the A.O. Smith AORO-50 itself is listed in the NSF Drinking Water Treatment Units (DWTU) database, certified to reduce arsenic (pentavalent), barium, cadmium, chromium (hexavalent), and more.

Does the A.O. Smith AORO-50 remove lead?

Yes - the A.O. Smith AORO-50 is NSF certified to reduce lead.

Should I buy the genuine filter set or an aftermarket one?

The genuine A.O. Smith cartridges are the safe, exact-fit choice. A cheaper compatible set can fit the same housings too - just confirm it carries its own independent certification for the contaminants you care about before buying.