Espar S3 D5E Hydronic 12V 17100 BTU Diesel Marine Heater

The S3 D5E Hydronic Heater is part of the latest generation of Espar hydronic heaters.  It will output up to 17100 BTU of heat by pumping hot coolant throughout the boat which will in turn be converted to hot air by local fan blowers.

The heater comes with fuel pump and coolant pump.  

Please consider also purchasing our Roton D5E Marine Install Kit.

New Features of the D5E Include;

• Stepless heating performance control.  This allows for a more dynamic heat output, that modulates from 1.3kW up to 5kW depending on requirement. Making the HS3 more fuel efficient and quieter than previous Hydronic models.
• More Power for Size. Retaining the usual Hydronic 5 power output the Hydronic S3 still has 5kW of heating to hand although its dimensions are smaller at 215 x 91 x 144 mm.
• Noise levels optimised. The new HS3 Vehicle Kit also includes the new, almost silent Eberspacher digital fuel dosing pump. No more “ticking” sounds! Not only have Eberspacher developed a silent running fuel pump, the Hydronic S3 also includes a newly developed vehicle exhaust silencer and combustion air silencer to quieten down the exhaust and combustion air noise.
• Low maintenance. The Hydronic S3 Economy has a service life of 3000 hours. That’s just over 8 hours a day for 365 days of the year!