Johnson Controls A19AAC-4 Temperature Control 30067439-890 Key Benefits: Anti-Foul Seat Design:

Key Benefits: Anti-Foul Seat Design: The raised seat prevents mineral buildup and sediment trapping

Common Questions Does this cover block airflow to the thermostat sensor

Durable Teflon Diaphragm: High-performance material specifically selected to withstand the rigors of steam service and high-temperature water

This technical construction ensures significantly faster response times and improved calibration stability compared to older bulk-polymer sensors

Johnson Controls A19AAC-4 Temperature Control 30067439-890 Key Benefits: Anti-Foul Seat Design:The Johnson Controls A19AAC 4 is a heavy duty, mechanical temperature control engineered for precision in HVACR applications. Built with a Single Pole Double Throw (SPDT) switch, this line voltage controller acts as a versatile solution for both heating and cooling equipment setups. The unit features a setpoint range of 0 to 80? F, specifically designed for low to medium temperature monitoring where a 5 degree F fixed differential is required for