Johnson Controls A19AAF-21 Temperature Control 30067439-890 and industrial process heaters

and industrial process heaters

suitable for heavy-duty commercial HVAC pressure switch replacements

Durable Construction: Built to withstand the high-cycle demands of peak winter operation in A

reducing labor time during evaporator coil repair or system overhauls where maintaining specific subcooling levels is paramount for compressor longevity

This component is essential for maintaining HVAC safety standards and protecting the unit from catastrophic overheating

Johnson Controls A19AAF-21 Temperature Control 30067439-890 and industrial process heatersFor contractors servicing HVACR systems, the Johnson Controls A19AAF 21 Temperature Control provides a dependable mechanical solution for high accuracy thermal regulation. This single stage, remote bulb temperature control is specifically engineered for precision in heating or cooling applications, featuring a 40 to 90 degree F setpoint range and a tight 1. 5 degree F fixed differential. As the A19AGF 23 direct replacement, this unit integrates