Lennox 25W27 TXV Refrigerant the AG13B030 provides a reliable

the AG13B030 provides a reliable fail-safe position during power loss

and a 30-second post-purge to ensure safe combustion chamber conditions

This maintains the high-side pressure at a level sufficient to keep the thermostatic expansion valve (TXV) operating within its intended capacity during low outdoor temperatures

Always verify your secondary transformer output before installation

Lennox 25W27 TXV Refrigerant the AG13B030 provides a reliableThe Lennox 25W27 TXV is a critical OEM thermal expansion valve designed for precise refrigerant flow control in high efficiency cooling systems. Engineered specifically for Lennox air conditioner units and heat pump systems, this brass body metering device optimizes evaporator performance by maintaining an exact superheat. As a veteran grade HVAC replacement part, the 25W27 ensures the quantity of refrigerant entering the coil matches the thermal