Lochinvar & A.O. Smith 100166057 Pressure Switch
As a seasoned technician, you know that a failing Lochinvar & A.O. Smith 100166057 Pressure Switch is often the silent culprit behind "no-ignition" service calls. This OEM replacement air pressure switch is a critical safety component designed to verify proper inducer motor operation and flue venting before allowing the ignition sequence to proceed. Engineered for high-recovery commercial water heaters and boilers, it features a precise 0.95" WC (Water Column) trip point, ensuring the system only fires when the combustion air pressure and venting conditions meet stringent factory parameters. This genuine Lochinvar 100166057 switch is a direct replacement for various Copper-Fin II and A.O. Smith Cyclone series models. When troubleshooting, always use your multimeter to check for 24V AC continuity across the terminals once the inducer reaches full speed. A stuck-open switch or a ruptured internal diaphragm will halt the Smart System control, resulting in a blocked flue or low air fault. By choosing this factory-authorized part, you ensure HVAC system compatibility and maintain the high-efficiency performance your clients expect without the risks associated with generic alternatives.
Key Benefits- OEM Precision: Calibrated to a specific 0.95" WC setting to prevent short-cycling and ensure safe exhaust drafting.
- Direct Compatibility: Exact fit for Lochinvar Copper-Fin II (CF/CH) and A.O. Smith commercial water heaters, eliminating mounting bracket field modifications.
- Durable Construction: Features a high-integrity silicone diaphragm and robust electrical contacts designed for high-cycle commercial environments.
- Technical Reliability: Essential for resolving blocked flue and inducer fan pressure fault codes in modern "Smart System" HVAC controllers.
How do I verify if the 100166057 pressure switch has failed?
Using a manometer, measure the actual vacuum pressure from the inducer port. If the pressure exceeds 0.95" WC but the switch fails to show continuity with a multimeter, the internal diaphragm or electrical contacts are faulty and require replacement.
Can I use a generic air pressure switch with a similar range?
It is not recommended. Lochinvar and A.O. Smith systems rely on specific pressure switch activation points for safety. Using a non-OEM part with an incorrect set point can lead to dangerous CO buildup or frequent nuisance lockouts.
What causes these switches to fail prematurely?
While the switch itself is robust, moisture or "gunk" in the pressure switch tubing can lead to diaphragm failure. Always inspect the sampling lines for cracks or blockages when replacing the 100166057.
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: $11,800.00
-65%$11,800.00
$4,130.00Lochinvar & A.O. Smith 100166057 Pressure Switch
As a seasoned technician, you know that a failing Lochinvar & A.O. Smith 100166057 Pressure Switch is often the silent culprit behind "no-ignition" service calls. This OEM replacement air pressure switch is a critical safety component designed to verify proper inducer motor operation and flue venting before allowing the ignition sequence to proceed. Engineered for high-recovery commercial water heaters and boilers, it features a precise 0.95" WC (Water Column) trip point, ensuring the system only fires when the combustion air pressure and venting conditions meet stringent factory parameters. This genuine Lochinvar 100166057 switch is a direct replacement for various Copper-Fin II and A.O. Smith Cyclone series models. When troubleshooting, always use your multimeter to check for 24V AC continuity across the terminals once the inducer reaches full speed. A stuck-open switch or a ruptured internal diaphragm will halt the Smart System control, resulting in a blocked flue or low air fault. By choosing this factory-authorized part, you ensure HVAC system compatibility and maintain the high-efficiency performance your clients expect without the risks associated with generic alternatives.
Key Benefits- OEM Precision: Calibrated to a specific 0.95" WC setting to prevent short-cycling and ensure safe exhaust drafting.
- Direct Compatibility: Exact fit for Lochinvar Copper-Fin II (CF/CH) and A.O. Smith commercial water heaters, eliminating mounting bracket field modifications.
- Durable Construction: Features a high-integrity silicone diaphragm and robust electrical contacts designed for high-cycle commercial environments.
- Technical Reliability: Essential for resolving blocked flue and inducer fan pressure fault codes in modern "Smart System" HVAC controllers.
How do I verify if the 100166057 pressure switch has failed?
Using a manometer, measure the actual vacuum pressure from the inducer port. If the pressure exceeds 0.95" WC but the switch fails to show continuity with a multimeter, the internal diaphragm or electrical contacts are faulty and require replacement.
Can I use a generic air pressure switch with a similar range?
It is not recommended. Lochinvar and A.O. Smith systems rely on specific pressure switch activation points for safety. Using a non-OEM part with an incorrect set point can lead to dangerous CO buildup or frequent nuisance lockouts.
What causes these switches to fail prematurely?
While the switch itself is robust, moisture or "gunk" in the pressure switch tubing can lead to diaphragm failure. Always inspect the sampling lines for cracks or blockages when replacing the 100166057.
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
As a seasoned technician, you know that a failing Lochinvar & A.O. Smith 100166057 Pressure Switch is often the silent culprit behind "no-ignition" service calls. This OEM replacement air pressure switch is a critical safety component designed to verify proper inducer motor operation and flue venting before allowing the ignition sequence to proceed. Engineered for high-recovery commercial water heaters and boilers, it features a precise 0.95" WC (Water Column) trip point, ensuring the system only fires when the combustion air pressure and venting conditions meet stringent factory parameters. This genuine Lochinvar 100166057 switch is a direct replacement for various Copper-Fin II and A.O. Smith Cyclone series models. When troubleshooting, always use your multimeter to check for 24V AC continuity across the terminals once the inducer reaches full speed. A stuck-open switch or a ruptured internal diaphragm will halt the Smart System control, resulting in a blocked flue or low air fault. By choosing this factory-authorized part, you ensure HVAC system compatibility and maintain the high-efficiency performance your clients expect without the risks associated with generic alternatives.
Key Benefits- OEM Precision: Calibrated to a specific 0.95" WC setting to prevent short-cycling and ensure safe exhaust drafting.
- Direct Compatibility: Exact fit for Lochinvar Copper-Fin II (CF/CH) and A.O. Smith commercial water heaters, eliminating mounting bracket field modifications.
- Durable Construction: Features a high-integrity silicone diaphragm and robust electrical contacts designed for high-cycle commercial environments.
- Technical Reliability: Essential for resolving blocked flue and inducer fan pressure fault codes in modern "Smart System" HVAC controllers.
How do I verify if the 100166057 pressure switch has failed?
Using a manometer, measure the actual vacuum pressure from the inducer port. If the pressure exceeds 0.95" WC but the switch fails to show continuity with a multimeter, the internal diaphragm or electrical contacts are faulty and require replacement.
Can I use a generic air pressure switch with a similar range?
It is not recommended. Lochinvar and A.O. Smith systems rely on specific pressure switch activation points for safety. Using a non-OEM part with an incorrect set point can lead to dangerous CO buildup or frequent nuisance lockouts.
What causes these switches to fail prematurely?
While the switch itself is robust, moisture or "gunk" in the pressure switch tubing can lead to diaphragm failure. Always inspect the sampling lines for cracks or blockages when replacing the 100166057.
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.
