Eberspacher Hydronic D5WSC Heater to Hydronic S3 D5L 24V Upgrade Kit inc EasyStart PRO Timer

The Eberspacher Espar Hydronic S3 24V 5kW Water Heater Changeover Kit upgrades the Hydronic D5WSC for marine or vehicle use. This genuine HS3 D5E 5.0kW heater includes water and fuel pumps, a 7-day programmable timer with onboard fault code readout for easy diagnostics, and diesel-fired heating ideal for cabin interior warmth and engine pre-heating. When paired with a plate heat exchanger, hydroplate, or calorifier, it can also deliver domestic hot water. Specifically designed for 24V systems, this kit enables seamless switchovers and reliable performance across yachts and rugged vehicles. Upgrade benefits include improved efficiency, flexible scheduling, and simplified maintenance while preserving diesel-fueled warmth even in extreme conditions.