Lochinvar & A.O. Smith 100289437 Gasket 320788-702 this is a conversion kit

this is a conversion kit that modifies your existing 6003 series Williams gas valve by replacing the internal regulator spring and orifices

chassis-ready unit

Precision Defrost Control: Maximizes system reliability by activating heating elements or adjusting cycles only when critical temperature thresholds are reached

This replacement 4-ton inverter board is the direct OEM solution for restoring high-efficiency performance in compatible Nordyne HVAC systems

As a 3/4 HP ECM motor

Lochinvar & A.O. Smith 100289437 Gasket 320788-702 this is a conversion kitFor veteran HVAC contractors servicing Lochinvar Knight or A. O. Smith high efficiency boilers, maintain combustion integrity with the Lochinvar & A. O. Smith 100289437 Gasket Kit. This essential burner gasket replacement prevents dangerous flue gas leakage and ensures a high pressure seal across the critical combustion interface. Designed for WH055 and WH085 residential boilers, this kit provides a professional grade heat exchanger seal that