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

NBK-20426-2 – Air Filter Assembly – American Water Heater / AO Smith Maintain optimal airflow and combustion efficiency in your water heater system with the NBK-20426-2 Air Filter Assembly. This OEM-equivalent replacement part directly replaces American Water Heater part number 323629-000 and AO Smith part numbers 100111226 and 9006477005 — specifically designed for models without the brush attachment. It helps prevent dust, lint, and debris from entering the combustion system, protecting internal components and ensuring long-term performance. Key Features: • OEM-Compatible Fit – Direct replacement for American Water Heater 323629-000 and AO Smith 100111226, 9006477005 (non-brush models) • Debris Protection – Prevents lint and dust buildup in air intake pathways • Critical Maintenance Component – Maintains clean airflow for efficient burner and fan operation • Durable Construction – Built for long-lasting use in high-efficiency water heater systems 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 (No Brush) • UPC: 810069184487 • Application: Compatible with select American Water Heater and AO Smith water heater models Equivalent To: • American Water Heater: 323629-000 • AO Smith: 100111226 (No Brush), 9006477005 (No Brush) Why Choose the NBK-20426-2? The NBK-20426-2 Air Filter Assembly is a vital replacement part that ensures clean airflow and consistent combustion in your gas water heater. Designed for OEM-level compatibility, it delivers reliable performance, simple installation, and long-lasting efficiency. Keep your system running smoothly—replace your worn or clogged air filter today with the NBK-20426-2 for dependable operation and improved energy performance.