it is recommended to use spring-return series (like the M9220) for outdoor dampers in cold climates to ensure a fail-safe position

Durability: Built to withstand the thermal cycling typical of high-efficiency gas furnaces

and pneumatics

and BDP350 models

This relay is a direct OEM replacement part for many Copeland units

Aaon R34700 Sensor 30067439-890 it is recommended to useThe Aaon R34700 Sensor is a high precision HVAC relative humidity sensor designed for critical climate control applications. This OEM AAON replacement part measures ambient moisture levels with a 3% RH accuracy rating, ensuring your environmental systems operate at peak efficiency. It is engineered with a standard 0 5VDC output, making it a versatile component for integration with AAON unit controllers such as the GPC XP and BGC series. Also known by