Ensure accurate water levels with this pressure switch, part number 100110820, for select AO Smith Water Heater models.
Grid is 1 inch square
AO Smith Water Heater Pressure Switch 100110820
AO Smith Water Heater Pressure Switch 100110820
AO Smith Water Heater Pressure Switch 100110820
AO Smith Water Heater Pressure Switch 100110820
Manufacturer Part

AO Smith Water Heater Pressure Switch 100110820

Genuine OEM Part # 100110820RC Item # 4894908Alternative Part Number(s)
Manufacturer Part
Ensure accurate water levels with this pressure switch, part number 100110820, for select AO Smith Water Heater models.
Grid is 1 inch square
AO Smith Water Heater Pressure Switch 100110820
AO Smith Water Heater Pressure Switch 100110820
AO Smith Water Heater Pressure Switch 100110820
AO Smith Water Heater Pressure Switch 100110820
$123.87
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Ensure accurate water levels with this pressure switch, part number 100110820, for select AO Smith Water Heater models.
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$123.87
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This part 100110820 is compatible with:

Product Type:
Water Heater
Brands:
AO Smith

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Pressure Switch Customer Reviews

Common Problems Fixed by the Pressure Switch

Based on customer reports and repair data, this part commonly fixes these issues:

About the Pressure Switch

The pressure switch closes when the proper airflow is achieved, signaling the control board to continue the ignition process. If the pressure switch is defective, the ignition process will stall, and the water heater will not light.

Popular models

Repair Help by Brands and Product Type

Alternative Part Number(s)

Replaces Part Number 9006017015