Isotherm® Stainless Water Heater
Isotherm® Stainless Water Heater
Isotherm® Stainless Water Heater
Isotherm® Stainless Water Heater

Isotherm® Stainless Water Heater

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Smart finish in a brushed stainless steel exterior, the quality of the Isotemp Basic by Isotherm®, is not just skin deep. Optimal water heating is achieved in two ways, firstly by an immersed electric heating element (immersion heater) and secondly by utilising the boat’s engine water heat (heat exchange). Isotemp water heaters may be used with freshwater or saltwater cooled engine systems. The immersion heater and heat exchanger are positioned in the lowest part of the tank, providing even thermostatic cycle heating of the water in the system. The engine water heat exchanger coil is extra long for faster heating, especially handy on sailing yachts which may run their engine for short periods only. The water inlets and outlets are positioned to minimise mixing of cold water into the hot, by the incoming water.

The immersion heater has been designed to enable easy removal to allow for inspection and cleaning of the tank. The materials used in the construction of the tank are of the highest quality. Acid resistant stainless steel AISI 316 is used for all parts of the tank that are in contact with water. The internal tank is insulated with expanded polyurethane insulation ensuring low temperature loss. The outer cover and mounting feet have been crafted from non-magnetic stainless steel AISI 304. The fixing feet are adjustable to 360°, allowing the tank to be mounted horizontally or vertically.

An optional accessory to the range is the thermostatic mixing valve, (controls the maximum temperature of water at the tap) which adds to safety, particularly important if having young children on board. The Isotemp range of water heaters by Isotherm® have a two year full warranty and a five year limited warranty on the tank.


  • Volume: 24L
  • Length: 460mm
  • Diameter: 395mm
  • Weight: 11kg
  • Max Pressure: 5.0
  • Immersion Heater: 240V
  • Watt: 750

After ordering online, you will receive an automated email confirmation containing your order details. Your order will then be confirmed within a few minutes of placing your order.

It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example, chain may come by road, some electronic equipment by air.

Most orders are shipped within 2 - 5 Days

Shipping rates

Orders delivered to Australian Post Codes attract an $18.00 Flat Rate Shipping Charge* This excludes Bulky or Dangerous Goods

For Bulky Goods, Dangerous Goods and Remote areas.

If the cost to send is vastly different to our standard delivery costs, someone from our team will contact you prior to dispatch to arrange further payment or to issue a refund if you are not happy with the additional charges.

International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

Should you have any queries or concerns about shipping, please don't hesitate to get in touch by clicking the support button on bottom right of the page.

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