Lochinvar & A.O. Smith 100189054 Collar 30067439-890 One port typically monitors the

One port typically monitors the positive pressure from the blower while the other senses the negative pressure (vacuum) in the combustion box

The Copeland 023-0039-10 Unloading Valve Coil is a critical OEM component designed for precise capacity control in refrigeration and air conditioning systems

and fan functions from a single interface

Enhanced Filtration: The MERV 11 rating ensures the removal of over 85% of particles between 3

Common Questions: What is the primary function of the C12-2001 in a heat pump system

Lochinvar & A.O. Smith 100189054 Collar 30067439-890 One port typically monitors theThe Lochinvar & A. O. Smith 100189054 Collar is a precision engineered 4" flue collar essential for maintaining the structural integrity of high efficiency venting systems. As an OEM component, this kit provides a secure, gas tight transition between the appliance and the exhaust infrastructure, preventing hazardous leaks and ensuring optimal draft performance. This specific part is a direct replacement for legacy units, as 100189054 is identical to