For contractors servicing Lennox air conditioner units

For contractors performing HVAC service valve replacement

technicians should inspect the heat exchanger cells for corrosion

Durable Construction: Built to withstand commercial-grade cycle counts and varying inlet pressures common in municipal gas lines

Seamless Retrofit: Engineered to replace obsolete Barber Colman 2264 and Invensys pneumatic controllers without requiring major system modification

Bard HVAC MC4002 Controller R-410A For contractors servicing Lennox airThe Bard MC4002 is a high performance dual unit lead lag controller specifically engineered to manage two Bard wall mount HVAC systems in mission critical environments like telecom shelters and equipment rooms. As a rugged solid state HVAC controller, it facilitates automated sequencing to balance equipment runtime and provides redundant cooling capacity when high heat loads or system faults occur. This Bard MC4002 controller serves as the direct OEM