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ODS Pilot Assembly Guide: What It Is and When to Replace It
By Fireplace Choice March 19, 2026 | Empire gas fireplace ODS oxygen depletion sensor pilot assembly replacement safety Superior vent-free | 0 comments
If you own a vent-free (ventless) gas fireplace, gas log set, or wall heater, your unit almost certainly uses an ODS pilot assembly. ODS stands for Oxygen Depletion Sensor — a critical safety device that shuts off the gas if oxygen levels in the room drop below a safe threshold....
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