Lochinvar & A.O. Smith 100318771 Inducer Assembly
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Lochinvar & A.O. Smith 100318771 Inducer Assembly

Lochinvar & A.O. Smith 100318771 Inducer Assembly

The Lochinvar 100318771 Inducer Assembly is a critical OEM replacement fan assembly engineered to maintain precise combustion airflow in high-efficiency Lochinvar NKC and NKB199 fire tube boilers. As a veteran technician knows, the inducer is the first component to activate in the ignition sequence, purging the heat exchanger of residual gases and creating the negative pressure required to close the boiler pressure switch. This 100318771 blower motor features a robust fan housing and includes the necessary inducer gasket to ensure a gas-tight seal against the combustion chamber. Replacing a seized or noisy Lochinvar 100318771 assembly is essential for preventing "failure to ignite" codes and ensuring the exhaust system effectively vents flue gases. Designed for broad compatibility, this unit also replaces legacy part number 100275531 and serves multiple Knight and Noble series models, including the KHB199, KHN199, and WHB199, providing a reliable drop-in solution for HVAC contractors.

Key Benefits:

  • Direct OEM Fit: Guaranteed compatibility with Lochinvar NKC199N, NKB199, and various Knight series models for rapid field replacement.
  • Full Kit: Includes the fan assembly with gasket to facilitate a proper seal and prevent CO leakage during operation.
  • Optimized Combustion: Restores factory-spec RPMs to maintain the correct air-to-fuel ratio, preventing soot buildup and efficiency loss.
  • Durable Construction: Built by Lochinvar & A.O. Smith to withstand the high-temperature environment of modern condensing boilers.

Common Questions:

Does this assembly include the replacement gasket?
Yes, the 100318771 assembly comes with the required gasket to ensure an airtight seal during the installation process.

What are the signs that my Lochinvar inducer motor is failing?
Typical symptoms include a high-pitched screeching (bearing failure), repeated pressure switch lockout errors, or the motor failing to spin up despite receiving 120V from the control board.

Is this part compatible with Knight KHB models?
Yes, this 100318771 fan is the correct exhaust inducer for several Knight models, including the KHB199N and KHB285N, as well as the Noble fire tube series.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

$155.61

Original: $444.59

-65%
Lochinvar & A.O. Smith 100318771 Inducer Assembly

$444.59

$155.61

Lochinvar & A.O. Smith 100318771 Inducer Assembly

The Lochinvar 100318771 Inducer Assembly is a critical OEM replacement fan assembly engineered to maintain precise combustion airflow in high-efficiency Lochinvar NKC and NKB199 fire tube boilers. As a veteran technician knows, the inducer is the first component to activate in the ignition sequence, purging the heat exchanger of residual gases and creating the negative pressure required to close the boiler pressure switch. This 100318771 blower motor features a robust fan housing and includes the necessary inducer gasket to ensure a gas-tight seal against the combustion chamber. Replacing a seized or noisy Lochinvar 100318771 assembly is essential for preventing "failure to ignite" codes and ensuring the exhaust system effectively vents flue gases. Designed for broad compatibility, this unit also replaces legacy part number 100275531 and serves multiple Knight and Noble series models, including the KHB199, KHN199, and WHB199, providing a reliable drop-in solution for HVAC contractors.

Key Benefits:

  • Direct OEM Fit: Guaranteed compatibility with Lochinvar NKC199N, NKB199, and various Knight series models for rapid field replacement.
  • Full Kit: Includes the fan assembly with gasket to facilitate a proper seal and prevent CO leakage during operation.
  • Optimized Combustion: Restores factory-spec RPMs to maintain the correct air-to-fuel ratio, preventing soot buildup and efficiency loss.
  • Durable Construction: Built by Lochinvar & A.O. Smith to withstand the high-temperature environment of modern condensing boilers.

Common Questions:

Does this assembly include the replacement gasket?
Yes, the 100318771 assembly comes with the required gasket to ensure an airtight seal during the installation process.

What are the signs that my Lochinvar inducer motor is failing?
Typical symptoms include a high-pitched screeching (bearing failure), repeated pressure switch lockout errors, or the motor failing to spin up despite receiving 120V from the control board.

Is this part compatible with Knight KHB models?
Yes, this 100318771 fan is the correct exhaust inducer for several Knight models, including the KHB199N and KHB285N, as well as the Noble fire tube series.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

Product Information

Shipping & Returns

Description

The Lochinvar 100318771 Inducer Assembly is a critical OEM replacement fan assembly engineered to maintain precise combustion airflow in high-efficiency Lochinvar NKC and NKB199 fire tube boilers. As a veteran technician knows, the inducer is the first component to activate in the ignition sequence, purging the heat exchanger of residual gases and creating the negative pressure required to close the boiler pressure switch. This 100318771 blower motor features a robust fan housing and includes the necessary inducer gasket to ensure a gas-tight seal against the combustion chamber. Replacing a seized or noisy Lochinvar 100318771 assembly is essential for preventing "failure to ignite" codes and ensuring the exhaust system effectively vents flue gases. Designed for broad compatibility, this unit also replaces legacy part number 100275531 and serves multiple Knight and Noble series models, including the KHB199, KHN199, and WHB199, providing a reliable drop-in solution for HVAC contractors.

Key Benefits:

  • Direct OEM Fit: Guaranteed compatibility with Lochinvar NKC199N, NKB199, and various Knight series models for rapid field replacement.
  • Full Kit: Includes the fan assembly with gasket to facilitate a proper seal and prevent CO leakage during operation.
  • Optimized Combustion: Restores factory-spec RPMs to maintain the correct air-to-fuel ratio, preventing soot buildup and efficiency loss.
  • Durable Construction: Built by Lochinvar & A.O. Smith to withstand the high-temperature environment of modern condensing boilers.

Common Questions:

Does this assembly include the replacement gasket?
Yes, the 100318771 assembly comes with the required gasket to ensure an airtight seal during the installation process.

What are the signs that my Lochinvar inducer motor is failing?
Typical symptoms include a high-pitched screeching (bearing failure), repeated pressure switch lockout errors, or the motor failing to spin up despite receiving 120V from the control board.

Is this part compatible with Knight KHB models?
Yes, this 100318771 fan is the correct exhaust inducer for several Knight models, including the KHB199N and KHB285N, as well as the Noble fire tube series.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

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