Common Technical Questions What is the difference between the Danfoss 060-113391 and the 060-113366

though the SP213670 is physically compatible if a titanium upgrade is preferred for both ports

it is fully compatible with modern high-pressure refrigerants including R-410A

maintaining the same form factor and electrical specifications for a drop-in furnace pressure switch replacement

heavy-duty spring

Aaon P91340 Limit Switch Els PW 17895 Common Technical Questions What isThe Aaon P91340 Limit Switch is a mission critical safety component designed for precise thermal regulation within high performance HVAC systems. This 190 220F auto limit switch features a 7 1 8 inch insertion depth, ensuring accurate sensing of heat exchanger or supply air temperatures. Engineered for Aaon rooftop units and air handlers, the P91340 functions as an automatic reset safety device that opens the electrical circuit when temperatures