Cookies

The cookie settings on this website are set to ‘allow all cookies’. Leaving your settings to ‘allow all cookies’ means you consent to a website remembering your preferences and generally enhancing the user experience. If you prefer a website to not remember your preferences, you can change your settings at any time by changing the privacy settings of your browser.

Find out more about cookies >

Water Heater - 23 ltr (6 US Gal), Rear Heat Exchanger

Water Heater - 23 ltr (6 US Gal), Rear Heat Exchanger

A Wide Range Of Water Heaters Suitable For Harsh Marine Conditions. Available in The Americas only (with exception of S360EW 12 V Water heater which is available worldwide).

Whale Electric Water Heaters includes model with the very latest technology. All heaters are manufactured from the highest quality materials and designed to specifically withstand harsh marine conditions.


3 material options available:

The Marine Galvanized Steel Cover offers corrosion resistance at an affordable price. This material weighs more than the other case options but is made from a strong and robust material  

Water Heaters with a Stainless Steel cover offer high levels of corrosion resistance with a modern stainless steel finish. These heaters are a bit lighter than those wearing the galvanized outer cover and heavier than the epoxy coated versions.

The White Epoxy Coated Aluminium cases are well-suited to installation in many of today’s engine rooms. Their white appearance blends in well with existing equipment and the coated aluminium material offers corrosion resistance.

Features and Benefits

• Multiple versions to suit your installation

- Combination electric/heat exchanger or electric 

only models available

- Available for 120V and 240V

- Horizontal Mounting only

• Robust Manufacturing

- Hold down brackets welded to inner tank

- Double wall heat exchangers

• Safety controls

- Integrated pressure relief valve

- Temperature and pressure drain tube included

• Magnesium anodes available separately

- Recommended to prevent corrosion and ensure a 

longer Water Heater life

• Sturdy, robust exteriors

- Material options - marine galvanized steel, 

stainless steel or epoxy coated

• Ignition protected

Also see Front Heat Exchanger and Electric Only Models.

Available in The Americas only.

    Available in The Americas only.
    CodeNameOrientationElectric and Heat ExchangerCapacity (gal)Voltage RatingPSIExterior Material
    S600Seaward by Whale 6 Gal Water HeaterHorizontalRear6120 V150 psiGalvanized Steel
    S600WSeaward by Whale 6 Gal Water HeaterHorizontalRear6120 V150 psiWhite Epoxy
    S650Seaward by Whale 6 Gal Water HeaterHorizontalRear6240 V150 psiGalvanized Steel
    S700Seaward by Whale 6 Gal Water HeaterHorizontalRear6120 V150 psiStainless Steel
    S750Seaward by Whale 6 Gal Water HeaterHorizontalRear6240 V150 psiStainless Steel
    • 80335 Image
      80335 Water Heater Conversion Kit 240v To 120v
    • 80336 Image
      80336 Water Heater Conversion Kit 120v To 240v
    • 74556 Image
      74556 Magnesium Anodes
    • WX1599 Image
      WX1599 Thermostatic Mixer Valve

    There are currently no spares for Water Heater - 23 ltr (6 US Gal), Rear Heat Exchanger.

    • Whale Marine Brochure (English v12)
    • Whale Marine Brochure (French v2)

    Whale products and services are available worldwide.
    First choose a region, then select the country below for a list of distributors ( for trade/ retail customers) and retailers ( for consumers).

    Or Company Name