Lennox 38M64 - Pressure Switch 1.95" WC
Lennox 38M64 – Pressure Switch, 1.95" WC
OEM Part #: 38M6401
OEM Part #: 38M6401
The Lennox 38M64 Pressure Switch is a factory-calibrated, single-function air pressure switch engineered to monitor differential pressure within a furnace system. With a precise actuation point of 1.95 inches of water column (WC), this switch helps maintain critical airflow conditions required for safe ignition and combustion in gas heating equipment.
Product Overview:
This switch is a vital component in modern high-efficiency Lennox furnaces. It works by detecting the presence or absence of a pressure differential between the induced draft motor and the burner compartment. If correct pressure is not detected, the switch opens the control circuit, preventing ignition and ensuring the furnace does not operate under unsafe conditions.
Key Features:
- Precise Actuation Pressure: Activates at 1.95" WC, ensuring consistent performance tailored to specific system requirements.
- Safety-Critical Operation: Prevents ignition if proper venting or airflow is not established, protecting the system from overheating or incomplete combustion.
- OEM Compatibility: Genuine Lennox part ensures correct operation with select Lennox furnaces, without the need for modifications or calibration.
- Sturdy and Long-Lasting: Built to withstand temperature fluctuations, pressure cycles, and long-term use in harsh HVAC environments.
- Compact Form Factor: Designed for easy installation in tight furnace cabinets, with built-in mounting features for hassle-free replacement.
Technical Specifications:
- Pressure Rating: 1.95" WC (inches of water column)
- Electrical Rating: Typically 24 VAC, low voltage
- Switch Type: SPST (Single Pole Single Throw), normally open
- Connection Type: Male quick-connect terminals for fast wiring
- Tubing Ports: Dual barb-style hose connectors for easy connection to pressure lines
Common Applications:
- Used in Lennox high-efficiency gas furnaces
- Monitors induced draft pressure to verify blower operation
- Ensures safe startup and shutdown sequences
- Helps meet HVAC safety and efficiency standards
Installation Notes:
Always verify proper hose routing and orientation during replacement. A clogged condensate drain or vent pipe may cause false pressure switch lockouts—ensure system cleanliness before installation.
Availability:
The Lennox 38M64 Pressure Switch is available now at Beenimax, your trusted source for genuine Lennox replacement parts. Order today for fast processing, reliable service, and technical support.
The Lennox 38M64 Pressure Switch is available now at Beenimax, your trusted source for genuine Lennox replacement parts. Order today for fast processing, reliable service, and technical support.
| Package Quantity | 1 Item |
|---|---|
| Item Returns | This item can be returned |
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