FitCheckrCompatibility verdict
Does AO-US-200-R fit AO-US-200?
Model: AO-US-200
Part: AO-US-200-R
Fit summary
AO-US-200 replacement filters should be matched to the AO-US-200 system rather than other A. O. Smith cartridge families.
AO-US-200-R compatibility details for A. O. Smith AO-US-200
Compatibility verdict
Yes, this replacement is marked as a confirmed fit.
Compatible model
A. O. Smith AO-US-200 · A. O. Smith AO-US-200 Under Sink Water Filter
OEM status and part number
AO-US-200-R is marked as OEM in the replacement data.
Replacement interval
About every 6 months or based on flow and water quality
Source confidence explanation
FitCheckr shows this compatibility check with a 86% confidence score based on 3 source signals. Higher confidence means more consistent source evidence, not lab testing.
A. O. Smith under-sink cartridges are system-specific. Match AO-US-200 rather than only filter count.
- Marketplace title says universal fit but does not mention AO-US-200.
- The old part number on your device does not match AO-US-200-R or its known family.
- The listing photo looks close, but the latch, seal, bag type, or frame shape differs.
Does AO-US-200-R fit A. O. Smith AO-US-200?
Yes, this replacement is marked as a confirmed fit.
Which model is AO-US-200-R listed for?
AO-US-200-R is shown on FitCheckr for A. O. Smith AO-US-200 Under Sink Water Filter (AO-US-200). Always confirm the exact model number on your device before choosing a replacement.
Is AO-US-200-R an OEM part?
AO-US-200-R is marked as OEM in the current FitCheckr data. Use the official source page when warranty or certification matters.
What should I check before choosing a replacement?
Check your exact device model, the existing part number, manufacturer instructions, replacement interval, and any latch, seal, chip, bag, cartridge, or frame differences.
What is this confidence score based on?
3 public source signals are currently reflected in this fit check. FitCheckr combines official pages, manuals, support documents, retailer listings, and public discussion summaries where available.
3 public source signals checked. FitCheckr weighs official pages, manuals, support docs, retailer listings, and public discussion summaries before showing a fit verdict.