Ao Smith 100111020 K, Blocked Inlet Switch replaces 9006243015

Product Description

The AO Smith 100111020 is a blocked inlet switch designed as a critical safety component for high-efficiency Lochinvar boilers and A.O. Smith water heaters. This switch operates as a normally closed safety limit, verifying the integrity of the combustion air path. It detects air intake obstructions, preventing incomplete combustion and the dangerous accumulation of carbon monoxide. This component is essential for resolving common ignition failure codes and "Air Pressure SW" faults.

• Ensures precise HVAC safety switch operation by monitoring intake static pressure.
• Protects the heat exchanger from damage caused by poor air-to-fuel ratios.
• OEM compatibility ensures a direct fit for 100111020 blocked air switch replacements.

Product Highlights

Genuine OEM blocked inlet switch for water heaters and boilers, ensuring combustion air path integrity and preventing hazards.

Product Information

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100111020

Technical Specifications

• Manufacturer: AO Smith
• Brand: AO Smith
• Product Type: Water Heater Blocked Inlet Switch
• MPN: 100111020
• UPC: 020363156015
• Replaces Part Number: 9006243015
• Compatible Brand: A.O. Smith
• Compatible Model: BTH 400-104, BTH 500-100, BTR 500-101, BTH 500-104
• Cross Reference Number: NS2-0530-00