We use cookies - Find out more
Telephone: 01502 716993
Part Identifier ?
Vertical Water Heater 27 Litre
Hotpot Logo

Hotpot Twin Coil Vertical Mount Calorifier (27 Litres)

Part No. 520227

£380.32 You pay £380.32 Incl VAT You pay £316.93 Excl VAT

RRP £422.57 £352.14

Save £42.25 (10.0%) Save £35.21 (10.0%)


Add to Wishlist
Brand Hotpot
Country of Origin United Kingdom
Construction Copper Calorifier, Stainless Steel Mounting Brackets, Polyurethane Jacket
Calorifier Coil Twin
Capacity 27 Litres of Fresh Water
Voltage Immersion: 240V AC
Height Overall: 455mm (18")
Diameter Overall: 375mm (14-3/4")
Connections Water: 1/2" BSP, Immersion: 2-1/4" BSP
Dimensions The Insulation Measures 1" Thick.
Certification / Approvals CE

This Hotpot twin coil calorifier is a simple and efficient means of heating water in your domestic system for use with showers, taps, galley and washing uses. Comparable to a domestic boiler, this calorifier has an inlet for cold water but then uses a link from the engine cooling system to heat the inner coil and therefore the water. It also has an aperture for an immersion heater which should be ordered separately. This calorifier can therefore provide you with free hot water while motoring or charging batteries. There is also another coil which can be used with a secondary water heater source.

The boiler is made entirely from copper, designed with performance and health benefits in mind. Copper features excellent anti-bacterial qualities, especially when compared to stainless steel and plastic materials, so gives clean sanitary water throughout your boat. It also heats quickly and the drop coil technology ensures quick transfer of heat from the coil to the water. The outside of the calorifier is insulated in a polyurethane jacket designed to retain heat for up to 24 hours after the engine is switched off. Each calorifier is rigorously tested to ensure the quality and reliability promised.

Water stored in the calorifier reaches the same temperature as the engine, generally about 85°C. The calorifier can be used with a thermostatic mixing valve to combine this water with cold water to give the required water temperature when hot water is demanded.

The calorifier is designed to be installed in a vertical position to replace existing calorifiers, although can be used for new build if required. It is not supplied with fittings, valves or the immersion, so this gives flexibility in your installation choices. It is however supplied with stainless steel mounting feet.

You may also need

FAQ & Technical Information

  • How do I install the Hotpot Vertical Calorifer? +

    Please see attached installation instructions.

    Hotpot Vertical Calorifier Installation InstructionsDownload
  • Technical Article - Domestic Water Systems +

    The technical article for domestic water systems is here:

    Technical Article - Domestic Water SystemsDownload
  • Will a Copper Calorifier React with my Aluminium Heat Exchanger? +

    No, provided that you use a good quality anti-freeze which contains corrosion inhibitors in your cooling system. Corrosion inhibitors will prevent corrosion of your Aluminium heat exchanger.

This product has been added to your basket.