Lennox 27W48 TXV Assembly

The Lennox 27W48 TXV Assembly is a precision-engineered thermostatic expansion valve (TXV) designed for high-efficiency refrigerant metering in residential and light commercial Lennox HVAC systems. As an OEM Lennox part (Catalog Number 27W48, Model R100264-06), this assembly regulates the flow of liquid refrigerant into the indoor evaporator coil, maintaining the optimal superheat required for system stability. This indoor TXV kit is built to withstand high-pressure environments, effectively preventing liquid slugging and protecting the compressor from damage. For service technicians performing refrigerant flow control adjustments or coil repairs, the 27W48 offers exact HVAC part compatibility for a streamlined installation. Utilizing this bypass-integrated valve ensures the cooling cycle remains balanced, even during fluctuating ambient temperatures or varying load conditions. Replacing a restricted or failing valve with this genuine assembly restores thermal performance and energy efficiency to factory specifications.

• Ensures precise refrigerant metering for consistent evaporator coil temperature across various load demands.
• Protects the compressor by maintaining accurate superheat levels to prevent liquid refrigerant floodback.
• Compatible with Lennox R-410A systems, meeting modern environmental and performance standards for cooling equipment.
• Features a durable, high-grade construction designed for the rapid cycling and thermal stresses of HVAC refrigeration.
• Direct OEM replacement simplifies the brazing and mounting process during field repairs.

Is the Lennox 27W48 compatible with R-22 systems?
This TXV assembly is specifically calibrated for R-410A refrigerant. Using it with R-22 will result in improper superheat and potential system failure.

Does this assembly include the sensing bulb and mounting hardware?
Yes, the 27W48 typically includes the thermostatic element, sensing bulb, and the necessary fittings for a standard indoor coil installation.

How can I tell if my current TXV needs to be replaced?
Indications of a failing thermostatic expansion valve include high superheat, low suction pressure, or frost buildup on the evaporator inlet with a full refrigerant charge.

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.