the 243-12 series is compatible with natural gas and propane applications

restoring system efficiency and preventing evaporator freeze-ups in high-humidity environments

this direct replacement transition eliminates the need for field modifications

Simplified Installation: Extended 1-1/8 ODF steel fittings allow for brazing without disassembly

and blue (8-13 psig)—to accommodate various control signal requirements and ensure proper valve close-off across direct-acting or reverse-acting configurations

Lennox 46K93 Heat Exchanger 320074-702 the 243-12 series is compatibleThe Lennox 46K93 Heat Exchanger is a critical genuine OEM replacement part specifically engineered for high performance Lennox HVAC systems. As a veteran technician knows, maintaining the integrity of the combustion cycle depends on a robust furnace heat exchanger. This aluminized steel component is built to withstand high cycle fatigue and thermal stress, ensuring maximum thermal expansion management and efficient heat transfer. Utilizing this Lennox