Technical Reliability: Engineered to withstand the thermal and vibrational stresses typical of high-performance air conditioning environments

including hot surface ignition (HSI) and direct spark ignition (DSI) setups

Is the SP20170A compatible with LP (Propane) systems

making it compatible with a wide range of residential and commercial HVAC units

When performing a condenser fan motor replacement

Lochinvar & A.O. Smith 100275508 Board 30067439-890 Technical Reliability: Engineered to withstandWhen you're out in the field and a boiler stops firing due to a communication error, you need the reliable Lochinvar & A. O. Smith 100275508 NKC150 Main Board to restore full system logic. This OEM Lochinvar replacement part is the primary HVAC control module designed to manage the high efficiency performance of NKC150N and NKC150P heating systems. By integrating advanced SMART SYSTEM boiler control circuitry, this board processes inputs from sensors