Description
Lochinvar & A.O. Smith 100166230 SPDT Pressure Switch Overview
The Lochinvar & A.O. Smith 100166230 is a factory-specified Single Pole Double Throw (SPDT) pressure switch designed as a direct OEM replacement for Lochinvar and A.O. Smith water heater and boiler applications. With a calibrated set point of 1.35″ water column (“wc), this pressure switch monitors combustion air or venting system pressure to verify safe operating conditions before allowing burner operation — a critical safety function in modern high-efficiency heating equipment.
Key Features
- OEM part number 100166230 — direct factory replacement
- 1.35″ water column (“wc) pressure set point
- SPDT (Single Pole Double Throw) switching action for versatile circuit control
- Designed for use with Lochinvar and A.O. Smith boilers and water heaters
- Monitors draft inducer or combustion air pressure for safe burner sequencing
- Helps prevent unsafe operation under blocked flue or inducer failure conditions
- Drop-in replacement for fast, straightforward installation
Application
This pressure switch is a key safety component in the combustion air proving circuit of compatible Lochinvar and A.O. Smith heating equipment. It confirms that the draft inducer is operating at the correct pressure differential before the ignition sequence is permitted to proceed. Using the correct OEM-specified part ensures proper calibration and reliable safety performance.
Why Choose OEM Replacement Parts?
Using genuine OEM-specified components like the 100166230 pressure switch ensures your equipment operates within factory safety parameters, maintains warranty compliance, and reduces the risk of nuisance lockouts caused by improperly calibrated aftermarket parts. Trust Jackson Systems for authentic replacement parts sourced from authorized distributors.
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