Lennox 19V97 Reversing Valve

The Lennox 19V97 Reversing Valve is a critical 4-way component engineered for heat pump refrigerant flow control in residential and light commercial HVAC systems. This heavy-duty valve features a 1/2 x 7/8 ODF connection size, facilitating a precise fit for standard copper line sets. Operating on a 24V reversing valve solenoid, it provides the low-voltage reliability required for seamless switching between heating and cooling cycles. As a genuine OEM Lennox replacement part (catalog number 19V97, also identified by model 100145-12), it ensures factory-spec pressure drops and slide-valve alignment, which is vital for maintaining compressor longevity. Designed to handle modern high-pressure refrigerants like R-410A, this 1/2 inch by 7/8 inch reversing valve is the professional choice for restoring HVAC system efficiency. In some applications, this unit serves as a direct replacement for legacy part number 73W84, making it a versatile addition to a technician’s truck stock for emergency heat pump repairs.

Key Benefits:

• OEM Compatibility: Exact fit for Lennox heat pump models, eliminating the need for extensive line set modifications.
• Precision Switching: The 24V actuator interface ensures immediate response to thermostat calls for mode changes.
• Durable Construction: Built to withstand high-cycle rates and thermal stress in both condenser and evaporator modes.
• Optimized Flow: Minimal pressure drop across the 1/2 x 7/8 ports maximizes seasonal energy efficiency ratings (SEER).

Common Questions:

• What are the port sizes for the Lennox 19V97? This valve features a 1/2" suction line connection and a 7/8" discharge/manifold connection (ODF).
• Does this valve include the 24V solenoid coil? This catalog number typically refers to the valve body; always verify if your existing solenoid matches the 24V requirements or if a new coil is needed for the 100145-12 body.
• Can this be used on non-Lennox equipment? While designed as a Lennox 19V97 replacement, it may function in other systems if the 1/2 x 7/8 physical dimensions and 24V voltage requirements are met.

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.