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AO Smith Water Heater Parts

You can find AO Smith replacement parts anytime your water heater needs repairs, from commonly replaced parts like spark ignition switches and thermocouples to more complicated repairs that include changing the gas valve. Is the water too hot or too cold, leaking from the bottom of the tank? Nothing is worse than waking up in the morning to no hot water for coffee, a morning tea, or for a shower. We ensure each and every replacement part on our site is a genuine manufacturer replacement part, and you can be sure you’ll never have to worry about taking a cold shower again.

AO Smith Water Heater Thermostat

RepairClinic Item # 3317284

Upper thermostat - AO Smith Electric Water Heater

OEM Part - Manufacturer #9001954045

$24.65

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365 Day Return Policy

AO Smith Water Heater Thermocouple

RepairClinic Item # 3317002

Grid is 1 inch square
Thermocouple - Part # 3317002 Mfg Part # 9000056045

Kit 24" thermocouple

OEM Part - Manufacturer #9000056045

AO Smith Water Heater Heating Element

RepairClinic Item # 3317011

Heating element 4500 Watt 240 Volt

OEM Part - Manufacturer #9000092045

$23.99

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365 Day Return Policy

AO Smith Water Heater Thermocouple

RepairClinic Item # 2633226

Grid is 1 inch square
Thermocouple - Part # 2633226 Mfg Part # Q340A1090

Thermocouple, 36 inches

Manufacturer #Q340A1090

$9.99

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365 Day Return Policy

AO Smith Water Heater Igniter

RepairClinic Item # 2636709

Grid is 1 inch square
Igniter - Part # 2636709 Mfg Part # 9003626005

Igniter/sensor assembly

OEM Part - Manufacturer #9003626005

$109.51

Order by 8:00 PM ET, this part ships TODAY!

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365 Day Return Policy

AO Smith Water Heater Igniter

RepairClinic Item # 4454390

Hot surface igniter/sensor assembly

OEM Part - Manufacturer #100110771

$110.48

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365 Day Return Policy

AO Smith Water Heater Pilot

RepairClinic Item # 3015137

Grid is 1 inch square
Pilot - Part # 3015137 Mfg Part # 9003542005

Pilot 190 degree c natural

OEM Part - Manufacturer #9003542005

$76.75

Order by 8:00 PM ET, this part ships TODAY!

Add to Cart

365 Day Return Policy

AO Smith Water Heater Thermostat

RepairClinic Item # 4451587

Lower thermostat - AO Smith Electric Water Heater

OEM Part - Manufacturer #100108422

AO Smith Water Heater Spark Ignition Switch

RepairClinic Item # 4546404

Grid is 1 inch square
Spark Ignition Switch - Part # 4546404 Mfg Part # 100109222

Piezo igniter and bracket

OEM Part - Manufacturer #100109222

$13.00

Order by 8:00 PM ET, this part ships TODAY!

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365 Day Return Policy

AO Smith Water Heater Anode Rod

RepairClinic Item # 2636726

16 " Aluminum Anode

OEM Part - Manufacturer #9003944005

$23.35

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365 Day Return Policy

AO Smith Water Heater Temperature and Pressure Relief Valve

RepairClinic Item # 2997696

Temperature and pressure valve

OEM Part - Manufacturer #9000071005

$21.60

Order by 8:00 PM ET, this part ships TODAY!

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365 Day Return Policy

AO Smith Water Heater Gas Burner

RepairClinic Item # 2637071

A.O. Smith gas water heater burner assembly

OEM Part - Manufacturer #9005938005

$126.92

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365 Day Return Policy

AO Smith Water Heater Pilot

RepairClinic Item # 4591607

Grid is 1 inch square
Pilot - Part # 4591607 Mfg Part # 100111380

Natural gas pilot assembly

OEM Part - Manufacturer #100111380

$40.20

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365 Day Return Policy

AO Smith Water Heater Igniter

RepairClinic Item # 2636966

Grid is 1 inch square
Igniter - Part # 2636966 Mfg Part # 9005256015

Flame sensor/igniter

OEM Part - Manufacturer #9005256015

AO Smith Water Heater Temperature and Pressure Relief Valve

RepairClinic Item # 3317118

Temperature and pressure relief valve 2" shank

OEM Part - Manufacturer #9000728045

$24.65

Order by 8:00 PM ET, this part ships TODAY!

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365 Day Return Policy