Lennox 18M63 Pressure Switch
The Lennox 18M63 Pressure Switch is a high-precision, two-stage OEM furnace part specifically engineered for compatible Lennox, Armstrong, and Ducane heating systems. This dual-action component provides critical monitoring of combustion air pressure, ensuring the inducer fan maintains the proper venting required for safe ignition and continuous high-efficiency operation. With fixed set points of 0.20" WC and 0.45" WC, this switch accurately validates airflow differentials across both low and high heat cycles, protecting your equipment from hazardous conditions such as blocked vents or manifold pressure failures.
Designed for professional-grade reliability, the Lennox 18M63 (also identified as 18M6301) features a SPST-N.O. contact configuration rated for 24 VAC systems. For a veteran technician, this is a standard drop-in pressure switch replacement that eliminates the guesswork associated with universal parts. Integrating this genuine Lennox HVAC part ensures the system’s sequences of operation remain within factory specifications, maximizing performance while preventing nuisance trips or premature component wear in multi-stage furnaces.
Key Benefits- OEM Precision: Calibrated with dual set points of 0.20" and 0.45" WC for exact two-stage furnace pressure switch performance.
- Enhanced Safety: Acts as a primary safety limit by detecting inducer motor failure or restricted flue venting.
- Broad Compatibility: Direct replacement for Lennox 18M6301 and compatible with select G60 series models from Lennox and Allied brands.
- Durable Construction: Built to withstand high-cycle operations in demanding residential and light commercial HVAC environments.
What are the set points for the Lennox 18M63?
This Lennox pressure switch features a low-stage set point of 0.20" WC and a high-stage set point of 0.45" WC to accommodate two-stage heating requirements.
Will this work with Armstrong or Ducane furnaces?
Yes, the Lennox 18M63 is a cross-compatible part used across several Allied Air brands, including Armstrong and Ducane, provided the part numbers match.
How do I troubleshoot a pressure switch open error?
If you detect an open circuit, first inspect for blocked exhaust vents, cracked collector boxes, or faulty tubing before replacing the 18M63 pressure switch.
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: $135.05
-65%$135.05
$47.27Lennox 18M63 Pressure Switch
The Lennox 18M63 Pressure Switch is a high-precision, two-stage OEM furnace part specifically engineered for compatible Lennox, Armstrong, and Ducane heating systems. This dual-action component provides critical monitoring of combustion air pressure, ensuring the inducer fan maintains the proper venting required for safe ignition and continuous high-efficiency operation. With fixed set points of 0.20" WC and 0.45" WC, this switch accurately validates airflow differentials across both low and high heat cycles, protecting your equipment from hazardous conditions such as blocked vents or manifold pressure failures.
Designed for professional-grade reliability, the Lennox 18M63 (also identified as 18M6301) features a SPST-N.O. contact configuration rated for 24 VAC systems. For a veteran technician, this is a standard drop-in pressure switch replacement that eliminates the guesswork associated with universal parts. Integrating this genuine Lennox HVAC part ensures the system’s sequences of operation remain within factory specifications, maximizing performance while preventing nuisance trips or premature component wear in multi-stage furnaces.
Key Benefits- OEM Precision: Calibrated with dual set points of 0.20" and 0.45" WC for exact two-stage furnace pressure switch performance.
- Enhanced Safety: Acts as a primary safety limit by detecting inducer motor failure or restricted flue venting.
- Broad Compatibility: Direct replacement for Lennox 18M6301 and compatible with select G60 series models from Lennox and Allied brands.
- Durable Construction: Built to withstand high-cycle operations in demanding residential and light commercial HVAC environments.
What are the set points for the Lennox 18M63?
This Lennox pressure switch features a low-stage set point of 0.20" WC and a high-stage set point of 0.45" WC to accommodate two-stage heating requirements.
Will this work with Armstrong or Ducane furnaces?
Yes, the Lennox 18M63 is a cross-compatible part used across several Allied Air brands, including Armstrong and Ducane, provided the part numbers match.
How do I troubleshoot a pressure switch open error?
If you detect an open circuit, first inspect for blocked exhaust vents, cracked collector boxes, or faulty tubing before replacing the 18M63 pressure switch.
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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Description
The Lennox 18M63 Pressure Switch is a high-precision, two-stage OEM furnace part specifically engineered for compatible Lennox, Armstrong, and Ducane heating systems. This dual-action component provides critical monitoring of combustion air pressure, ensuring the inducer fan maintains the proper venting required for safe ignition and continuous high-efficiency operation. With fixed set points of 0.20" WC and 0.45" WC, this switch accurately validates airflow differentials across both low and high heat cycles, protecting your equipment from hazardous conditions such as blocked vents or manifold pressure failures.
Designed for professional-grade reliability, the Lennox 18M63 (also identified as 18M6301) features a SPST-N.O. contact configuration rated for 24 VAC systems. For a veteran technician, this is a standard drop-in pressure switch replacement that eliminates the guesswork associated with universal parts. Integrating this genuine Lennox HVAC part ensures the system’s sequences of operation remain within factory specifications, maximizing performance while preventing nuisance trips or premature component wear in multi-stage furnaces.
Key Benefits- OEM Precision: Calibrated with dual set points of 0.20" and 0.45" WC for exact two-stage furnace pressure switch performance.
- Enhanced Safety: Acts as a primary safety limit by detecting inducer motor failure or restricted flue venting.
- Broad Compatibility: Direct replacement for Lennox 18M6301 and compatible with select G60 series models from Lennox and Allied brands.
- Durable Construction: Built to withstand high-cycle operations in demanding residential and light commercial HVAC environments.
What are the set points for the Lennox 18M63?
This Lennox pressure switch features a low-stage set point of 0.20" WC and a high-stage set point of 0.45" WC to accommodate two-stage heating requirements.
Will this work with Armstrong or Ducane furnaces?
Yes, the Lennox 18M63 is a cross-compatible part used across several Allied Air brands, including Armstrong and Ducane, provided the part numbers match.
How do I troubleshoot a pressure switch open error?
If you detect an open circuit, first inspect for blocked exhaust vents, cracked collector boxes, or faulty tubing before replacing the 18M63 pressure switch.
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.
