Meet the Kuuma Water Heater -23L Side Mounts, a purpose-built marine hot-water solution designed for boats where space is as precious as heat. With a capacity of 22.7 L (6 gal) and a side-mount configuration, this heater brings reliable hot water to cabins, galleys, heads, and showers without dominating the deck space.

Why this Kuuma model stands out

• Efficient heat exchange and rapid warm water: A high-performance heat exchanger paired with a 1500 W AC element (230 V) delivers steady hot water for everyday sailing needs, from dawn coffee to post-sail showers.
• Robust, marine-ready construction: TIG-welded aluminium tank and a stainless steel outer case resist the corrosive marine environment while staying lightweight and durable.
• Flexible mounting options: Side mounts and multiple installation configurations make it easy to fit into tight engine rooms, flybridge lockers, or cockpit spaces without compromising access for maintenance.
• Space-conscious footprint: Chassis measures 345 mm (W) x 408 mm (D) x 345 mm (H), with a total depth of 490 mm including plumbing—designed to maximize cabin space without sacrificing capacity.
• Trusted certifications for peace of mind: Tested and certified to AS/NZS 60335.2.21-2002 (ESO Approval No. Q080349), UL and CE certified, with marine-specific ignition protection for onboard safety.
• Legacy and reliability: Built on the lineage of Force 10 marine heaters, Kuuma combines proven performance with modern materials and compliance for long-term use at sea.

Key specifications at a glance

• Capacity: 22.7 L / 6 gallons
• Heating element: Electric, 1500 W
• Electrical: 230 V standard
• Tank: TIG-welded aluminium
• Case: Stainless steel
• Mounting: Side mounts with multiple installation options
• Chassis dimensions: Width 345 mm, Depth 408 mm, Height 345 mm
• With plumbing: Up to 490 mm depth
• Certifications: AS/NZS 60335.2.21-2002 (ESO No. Q080349), UL, CE; ignition protected

Who is this ideal for?

• Boat owners prioritizing dependable hot water for galleys, heads, and cabins on sailboats and motor yachts.
• Owners needing a compact, side-mountable heater that fits into tight engine rooms or under cockpit lockers.
• Mariners seeking third-party certifications and marine-grade construction for added reliability and safety at sea.

Use cases and practical advantages

• Offshore cruising: enjoy warm showers and hot water while docked or underway with shore power or a generator supplying 230 V.
• Dockside comfort: reliably heats water for dishwashing and galley tasks during long harbour stays.
• Retrofits and upgrades: the side-mount design simplifies installation in boats with limited vertical space or complex internal layouts.

Installation and maintenance tips

• Plan for a side-mount layout that keeps plumbing runs short to minimize heat loss and simplify service access.
• Ensure a proper 230 V power source and appropriate circuit protection to maximize heating performance and safety.
• Schedule regular inspections of the stainless-steel case and aluminium tank connections to maintain corrosion resistance and seal integrity.
• Respect the certified safety guidelines and marine-application provisions to maintain warranty and reliability.

Designed for sailors who demand dependable hot water without compromising space, the Kuuma Water Heater -23L Side Mounts delivers efficient performance, durable construction, and marine-grade certification in a compact, adaptable package. Whether you’re upgrading an older system or equipping a new vessel, this heater is built to deliver comfort and reliability where it matters most.