Whale Water Systems S1100 11 Gallon Marine Water Heater with Heat Exchanger

The Whale Water Systems S1100 Seaward is a compact 11-gallon marine water heater designed for reliable hot water production on boats and RVs. This dual-function heater features both 120V AC electric heating and a rear-mounted heat exchanger that can utilize engine coolant for efficient water heating while underway.

Key Features:

• 11-gallon capacity aluminum tank for corrosion resistance in marine environments
• 1800-watt 120V AC electric heating element for shore power operation
• Rear-mounted dual-wall heat exchanger allows engine heat recovery
• Durable galvanized steel exterior case protects against harsh marine conditions
• Integrated aluminum hold-down brackets welded directly to tank for secure mounting
• Ignition protection design meets safety standards for marine installations
• UL certified for quality and safety compliance

The dual-wall heat exchanger design provides an extra layer of safety by preventing contamination between the engine cooling system and potable water supply. The combination of electric and heat exchanger heating options provides flexibility for hot water production whether docked at the marina or cruising offshore.