Eberspacher HS3 Heater Only

New generation Eberspacher Hydronic S3 heater (12V).  The S3 heater is fitted with a brushless variable speed combustion air motor which improves efficiency and service life. The new fuel pump and circulation pump are mounted externally to the heater, and design improvements have resulted in less noise output, greater efficiency and make the heater easier to service. This version of heater is compatible with existing S+ diagnostic testers, and can only replace the older S1 Hydronic heaters if new mount brackets, control panel, wiring, circulation pump and fuel pump are used.