If the burner stays off while the system is cold and you have continuity issues across the switch terminals after a manual reset attempt

25 inches in length

8-ton systems

This general service valve is specifically rated for gas applications up to 150

This is a standard OEM-equivalent replacement for technicians seeking reliable condenser fan propellers

Lochinvar & A.O. Smith 100111901 Burner Assembly Els PW 17895 If the burner stays offAs a field technician, you know that a reliable ignition sequence is the backbone of any high efficiency heating system. The Lochinvar & A. O. Smith 100111901 Burner Assembly is a critical OEM replacement part designed specifically for Intermittent Ignition Device (IID) systems. This pilot burner assembly is engineered to withstand the thermal stresses of gas fired water heaters and boilers, ensuring a consistent flame pattern that properly envelopes