
Lochinvar & A.O. Smith 100188879 Fan Assembly
The Lochinvar 100188879 Fan Assembly is a critical OEM replacement component designed specifically for the FTX400 Knight XL heating boiler. Engineered to maintain precise air-to-fuel ratios, this kit ensures optimal combustion stability and heat exchanger efficiency. As a direct replacement for A.O. Smith 100188879 and legacy part number FAN30026, this high-performance blower assembly facilitates consistent static pressure within the venting system. The assembly includes the necessary blower motor and housing required to restore factory-spec airflow, mitigating issues such as flame instability or frequent ignition failures. Built for the rigorous demands of commercial hydronic applications, this condensing boiler fan kit is essential for maintaining the operational integrity of 400,000 BTU systems. Proper installation of this combustion blower motor ensures the modulating burner operates within its designed CO2 parameters, maximizing energy output while reducing thermal stress on the internal components.
- OEM Compatibility: Exact replacement for Lochinvar Knight XL FTX400 and equivalent A.O. Smith commercial units.
- High-Efficiency Performance: Specifically calibrated to handle the variable speed requirements of condensing hydronic boilers.
- Direct Bolt-on Installation: Reduces downtime for contractors by utilizing factory mounting points and electrical connections.
- Combustion Precision: Maintains the critical airflow velocity needed for clean combustion and lower nitrogen oxide (NOx) emissions.
Common Questions
Is this fan assembly compatible with smaller Knight boiler models?
No, the 100188879 is specifically sized for the FTX400 Knight XL series. Using this blower on lower BTU models will lead to incorrect air-fuel mixtures and potential safety shut-offs.
What are the signs that my current fan assembly is failing?
Common indicators include increased mechanical noise, frequent "no flame" error codes, or the boiler failing to pre-purge. Always check for debris or blockages in the intake before assuming the motor has failed.
Does this kit include the mounting gaskets?
While this kit provides the primary fan assembly, it is professional standard practice to inspect and replace the burner plate gasket and fan flange O-rings during any combustion component service to ensure an airtight seal.
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.
Original: $690.25
-65%$690.25
$241.59Lochinvar & A.O. Smith 100188879 Fan Assembly
The Lochinvar 100188879 Fan Assembly is a critical OEM replacement component designed specifically for the FTX400 Knight XL heating boiler. Engineered to maintain precise air-to-fuel ratios, this kit ensures optimal combustion stability and heat exchanger efficiency. As a direct replacement for A.O. Smith 100188879 and legacy part number FAN30026, this high-performance blower assembly facilitates consistent static pressure within the venting system. The assembly includes the necessary blower motor and housing required to restore factory-spec airflow, mitigating issues such as flame instability or frequent ignition failures. Built for the rigorous demands of commercial hydronic applications, this condensing boiler fan kit is essential for maintaining the operational integrity of 400,000 BTU systems. Proper installation of this combustion blower motor ensures the modulating burner operates within its designed CO2 parameters, maximizing energy output while reducing thermal stress on the internal components.
- OEM Compatibility: Exact replacement for Lochinvar Knight XL FTX400 and equivalent A.O. Smith commercial units.
- High-Efficiency Performance: Specifically calibrated to handle the variable speed requirements of condensing hydronic boilers.
- Direct Bolt-on Installation: Reduces downtime for contractors by utilizing factory mounting points and electrical connections.
- Combustion Precision: Maintains the critical airflow velocity needed for clean combustion and lower nitrogen oxide (NOx) emissions.
Common Questions
Is this fan assembly compatible with smaller Knight boiler models?
No, the 100188879 is specifically sized for the FTX400 Knight XL series. Using this blower on lower BTU models will lead to incorrect air-fuel mixtures and potential safety shut-offs.
What are the signs that my current fan assembly is failing?
Common indicators include increased mechanical noise, frequent "no flame" error codes, or the boiler failing to pre-purge. Always check for debris or blockages in the intake before assuming the motor has failed.
Does this kit include the mounting gaskets?
While this kit provides the primary fan assembly, it is professional standard practice to inspect and replace the burner plate gasket and fan flange O-rings during any combustion component service to ensure an airtight seal.
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
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lochinvar 100188879 Fan Assembly is a critical OEM replacement component designed specifically for the FTX400 Knight XL heating boiler. Engineered to maintain precise air-to-fuel ratios, this kit ensures optimal combustion stability and heat exchanger efficiency. As a direct replacement for A.O. Smith 100188879 and legacy part number FAN30026, this high-performance blower assembly facilitates consistent static pressure within the venting system. The assembly includes the necessary blower motor and housing required to restore factory-spec airflow, mitigating issues such as flame instability or frequent ignition failures. Built for the rigorous demands of commercial hydronic applications, this condensing boiler fan kit is essential for maintaining the operational integrity of 400,000 BTU systems. Proper installation of this combustion blower motor ensures the modulating burner operates within its designed CO2 parameters, maximizing energy output while reducing thermal stress on the internal components.
- OEM Compatibility: Exact replacement for Lochinvar Knight XL FTX400 and equivalent A.O. Smith commercial units.
- High-Efficiency Performance: Specifically calibrated to handle the variable speed requirements of condensing hydronic boilers.
- Direct Bolt-on Installation: Reduces downtime for contractors by utilizing factory mounting points and electrical connections.
- Combustion Precision: Maintains the critical airflow velocity needed for clean combustion and lower nitrogen oxide (NOx) emissions.
Common Questions
Is this fan assembly compatible with smaller Knight boiler models?
No, the 100188879 is specifically sized for the FTX400 Knight XL series. Using this blower on lower BTU models will lead to incorrect air-fuel mixtures and potential safety shut-offs.
What are the signs that my current fan assembly is failing?
Common indicators include increased mechanical noise, frequent "no flame" error codes, or the boiler failing to pre-purge. Always check for debris or blockages in the intake before assuming the motor has failed.
Does this kit include the mounting gaskets?
While this kit provides the primary fan assembly, it is professional standard practice to inspect and replace the burner plate gasket and fan flange O-rings during any combustion component service to ensure an airtight seal.
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.












