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A.O. Smith part numbers

9 A.O. Smith part numbers have pages on HVAC Fitter, in 4 part types: hot surface igniters (4), flame sensors (3), furnace pressure switches (1) and thermocouples and thermopiles (1).

Each page shows the specs from the maker's and parts sellers' listings for that number. Match them with the label on your old part.

A.O. Smith part types

9 part numbers

Part numberPartPart typeListed facts
100074673Flame SensorFlame sensors3 specs
100108267ThermocoupleThermocouples and thermopiles3 specs
100109908Flame SensorFlame sensors3 specs
100110899Water Heater 100110899 IgniterHot surface igniters5 specs
100112456IgniterHot surface igniters3 specs
100113151Water Heater 100113151 Flame Sensor GuideFlame sensors3 specs
100191120IgniterHot surface igniters4 specs
100217965Pressure Switch ReferenceFurnace pressure switches3 specs
100271888Igniter GuideHot surface igniters3 specs

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