Air Filter Assembly | American Water Heater / AO Smith | NBK-20426-2

NBK-20426-2 – Air Filter Assembly – American Water Heater / AO Smith – Special Order

The NBK-20426-2 Air Filter Assembly is an OEM-equivalent replacement part designed to maintain proper airflow and combustion efficiency in water heater systems. This air filter is a direct replacement for American Water Heater part number 323629-000, and AO Smith part numbers 100111226 and 9006477005—specifically the versions without the brush attachment. It helps protect internal components from dust, lint, and debris, ensuring long-term system reliability.

⚠️ SPECIAL ORDER NOTICE: This is a special order item sourced from NBK. Please allow 1–2 business days for processing.

Key Features

✅ OEM-Compatible Fit: Replaces American Water Heater 323629-000 and AO Smith 100111226, 9006477005 (non-brush versions)
✅ Debris Protection: Prevents lint and dirt buildup in air intake pathways
✅ Critical Maintenance Component: Helps maintain clean airflow for optimal burner and fan operation

Specifications

📌 SKU: 20426-2
📌 Category: Water Heater Parts / Air Filters
📌 OEM Brands: American Water Heater, AO Smith
📌 Replaces OEM Parts: 323629-000, 100111226 (No Brush), 9006477005 (Not Brush)
📌 UPC: 810069184487
📌 Application: For use in compatible American Water Heater and AO Smith models

Equivalent To

American Water Heater: 323629-000
AO Smith: 100111226 (No Brush), 9006477005 (Not Brush)

Why Choose the NBK-20426-2?

The NBK-20426-2 Air Filter Assembly is a critical maintenance component that supports safe and efficient operation of your water heater. With OEM-level compatibility and easy installation, it's a smart choice for maintaining airflow and preventing premature wear on your system.

Shipping & Availability

🚚 Special order from NBK. Please expect a 1–2 business day processing delay.