Suburban 233229 Nautilus IW60/IW60A Air Pressure Switch

Suburban part 233229 is the combustion-air pressure switch used on compatible Nautilus on-demand water heaters. The heater checks the pressure-switch circuit once its blower starts; this is the switch rather than the blower motor or control board.

Part identification and compatibility

• Part number: 233229
• Component: Air-pressure / low-airflow switch
• Manufacturer-manual fitment: Nautilus IW60 and IW60A water heaters
• IW60 parts diagram: Item 60 — one air-pressure switch
• Additional supplier-listed model: IW60RL; verify the specific heater version before ordering
• Existing store warranty information: No Supplier Warranty; any manufacturer coverage is governed by its own terms

Before ordering

Compare the existing switch and nameplate before ordering. Problems in the airflow safety circuit can also be caused by venting or blower issues. Have a qualified technician test the cause and do not bypass an airflow protection device.