Fast deliveries of yacht equipment, calculation, selection of analogues and spare parts. Send us your request and we will contact you ASAP with a solution. We deliver in Cyprus, throughout Europe and worldwide. More than 10 years of experience.
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1-2 weeks delivery time The Isotemp 601523S000003 Slim 15L marine water heater uses a 115V/750W immersion element and a stainless-steel 4-gallon tank with an integrated mixing valve. With the heater and heat exchanger positioned low in the cylinder, it delivers uniform water heating, while optimized inlet/outlet geometry reduces cold-water mixing for higher effective hot-water capacity in compact installations. |
$ 1,016.35
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1-2 weeks delivery time The Isotemp 601531S000003 Slim 15L marine water heater features a 4-gallon stainless steel tank, a 230V/750W immersion heater, and an integrated mixing valve for stable outlet temperature. The heat exchanger and heating element are positioned low in the tank for uniform heating, while dedicated inlet/outlet geometry minimizes cold-water mixing for maximum usable hot-water capacity in compact onboard installations. |
$ 854.34
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1-2 weeks delivery time The Isotemp 602023S000003 Slim 20L marine water heater features a 5.3-gallon stainless-steel tank with a 115V/750W immersion heater and an integrated mixing valve. With the heater and heat exchanger installed at the lowest point for even heat distribution, and optimized inlet/outlet geometry to reduce cold-water mixing, the unit delivers maximum usable hot-water capacity for compact onboard systems. |
$ 1,026.82
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1-2 weeks delivery time The Isotemp 602031S000003 Slim 20L marine water heater features a 5.3-gallon stainless-steel tank with a 230V/750W immersion heater and an integrated mixing valve. With the heating element and heat exchanger mounted low in the cylinder, the unit provides uniform heating, while optimized inlet/outlet geometry reduces cold-water mixing to deliver maximum usable hot-water volume in compact onboard installations. |
$ 918.92
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1-2 weeks delivery time The Isotemp 602423B000003 Basic 24L water heater features a 6.4-gallon stainless-steel tank, a 115V/750W immersion heater and an integrated mixing valve. With the heating element and heat exchanger installed low in the tank for uniform temperature distribution, and inlet/outlet geometry designed to reduce cold-water mixing, it provides high hot-water output in compact marine installations. |
$ 1,075.72
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1-2 weeks delivery time The Isotemp 602431B000003 Basic 24L marine water heater features a 6.4-gallon stainless-steel tank, a 230V/750W immersion heater, and a built-in thermostat-controlled mixing valve. With the heater and heat exchanger mounted at the tank’s lowest point for uniform heating, and optimized inlet/outlet geometry to reduce cold-water mixing, it delivers high hot-water output in a compact footprint. |
$ 904.19
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1-2 weeks delivery time The Isotemp 602431BD00003 Basic 24L water heater features a 6.4-gallon stainless-steel tank with a 230V/750W immersion heater, dual heat-exchange coils, a dual thermostat system and an integrated mixing valve. This configuration increases heating efficiency, supports multiple engine-circuit connections and ensures uniform water temperature with reduced cold-water mixing. |
$ 1,177.01
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1-2 weeks delivery time The Isotemp 602523S000003 Slim 25L marine water heater features a 6.5-gallon stainless-steel tank with a 115V/750W immersion heater and an integrated mixing valve. With low-mounted heating components for uniform temperature distribution and optimized inlet/outlet geometry to limit cold-water mixing, it provides maximum hot-water output in compact Slim-series installations. |
$ 1,093.19
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1-2 weeks delivery time The Isotemp 602531S000003 Slim 25L marine water heater features a 6.5-gallon stainless-steel tank with a 230V/750W immersion heater and an integrated mixing valve. With the heating element and heat exchanger mounted at the lowest tank point and optimized inlet/outlet design to reduce cold-water mixing, it delivers maximum usable hot-water capacity in a compact Slim-series footprint. |
$ 999.53
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1-2 weeks delivery time The Isotemp 602531S000026 Slim 25L deflagration-proof marine water heater features a 6.5-gallon stainless-steel tank, a 230V/750W immersion heater, and an integrated mixing valve. Designed for hazardous or enclosed onboard spaces, it provides explosion-resistant construction, uniform heating via a low-mounted element and heat exchanger, and optimized inlet/outlet geometry to reduce cold-water mixing. |
$ 2,326.06
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1-2 weeks delivery time The Isotemp 6025B1S000003 Slim 25L marine water heater features a 6.5-gallon stainless-steel tank with a high-output 230V/1200W immersion heater and an integrated mixing valve. Its low-mounted heating components and optimized inlet/outlet geometry ensure uniform water heating and reduced cold-water mixing, delivering maximum usable hot-water performance in compact marine installations. |
$ 1,236.38
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1-2 weeks delivery time The Isotemp 603023B000003 Basic 30L marine water heater offers an 8-gallon stainless-steel tank, a 115V/750W immersion heater and an integrated mixing valve. With both heating components positioned low in the tank and optimized inlet/outlet geometry to reduce cold-water mixing, it provides uniform heating and high-output performance for medium-size onboard hot-water systems. |
$ 1,173.51
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1-2 weeks delivery time The Isotemp 603031B000003 Basic 30L marine water heater offers an 8-gallon stainless-steel tank with a 230V/750W immersion heater and a built-in mixing valve. With low-mounted heating components and optimized inlet/outlet geometry that reduces cold-water mixing, it provides uniform heating and high effective hot-water output for medium-size onboard installations. |
$ 1,149.07
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1-2 weeks delivery time The Isotemp 604023B000003 Basic 40L marine water heater features an 11-gallon stainless-steel tank with a 115V/750W immersion heater and an integrated mixing valve. With low-mounted heating components for even temperature distribution and inlet/outlet geometry designed to reduce cold-water mixing, it provides reliable medium-capacity hot-water performance for onboard systems. |
$ 1,197.96
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1-2 weeks delivery time The Isotemp 604023BD00003 Basic 40L marine water heater features an 11-gallon stainless-steel tank with a 115V/750W immersion heater, dual heat-exchange coils and an integrated mixing valve. A low-mounted heater and double-coil layout ensure fast, uniform heating, while optimized inlet/outlet design limits cold-water mixing to maximize usable hot-water volume. |
$ 1,515.78
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1-2 weeks delivery time The Isotemp 604031B000003 Basic 40L marine water heater features an 11-gallon stainless-steel tank, a 230V/750W immersion heater and an integrated mixing valve. With heating components mounted at the lowest point for uniform temperature distribution and optimized inlet/outlet geometry that reduces cold-water mixing, it delivers high hot-water output for larger onboard systems. |
$ 1,008.78
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1-2 weeks delivery time The Isotemp 604031BD00003 Basic 40L marine water heater features an 11-gallon stainless-steel tank, a 230V/750W immersion heater, double heat-exchange coils, dual thermostats and an integrated mixing valve. With low-mounted components for uniform heating and optimized inlet/outlet geometry that reduces cold-water mixing, it delivers high hot-water output and multi-circuit compatibility for demanding marine systems. |
$ 1,484.35
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1-2 weeks delivery time The Isotemp 6040B1B000003 Basic 40L marine water heater features an 11-gallon stainless-steel tank with a high-output 230V/1200W immersion heater and an integrated mixing valve. With low-mounted heating components for uniform water temperature and inlet/outlet geometry that reduces cold-water mixing, it offers fast heat-up performance and high usable hot-water capacity for medium and large vessels. |
$ 1,264.32
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What are the primary features of the Isotemp marine water heater?
The Isotemp marine water heaters are specifically designed for use on yachts and boats, featuring a compact design like the Isotemp Slim and Isotemp Slim Square models, ideal for tight spaces. These water heaters come with high-quality components, including a heat exchanger that uses engine heat to warm the water in the tank. These Boat Hot Water Heater solutions come with high-quality components, including a heat exchanger that uses engine heat to warm the water in the tank. Available in various capacities, such as the 4.2-gallon (16L) or larger options like 25L and 40L, they also include a mixing valve to regulate water temperature, providing reliable performance onboard.
What are the key differences between the Isotemp Slim and Isotemp Basic water heaters?
The key differences between the Isotemp Slim and Isotemp Basic water heaters lie in their size and design. The Slim models, such as the Isotemp Slim 25L, are specifically designed for use in tight spaces on boats, featuring a compact design with high-quality components. In contrast, the Basic models, like the Basic 40L and Basic 75L, offer larger water tanks and come with standard features such as a mixing valve that regulates water temperature, providing additional protection and reliability for marine applications. Both lines can be effectively integrated into a Boat Heater system to ensure consistent hot water supply and onboard comfort.
What are the main safety features included in the Isotemp Spa water heater?
The Isotemp Spa Marine Water Heater is equipped with several key safety features, including a safety valve that helps regulate pressure and prevent overheating. It is designed with high-quality components, providing an additional layer of protection, and comes standard with a mixing valve to control water temperature. These features ensure reliable and safe operation for marine use, even in challenging conditions.
How does the Isotemp Slim Square water heater save space on boats and yachts?
The slim water heater utilizes a uniquely shallow, rectangular design that fits perfectly into narrow voids behind joinery or flat against bulkheads, spaces typically wasted on vessels. This efficient Slim Square profile unlocks installation possibilities in areas where conventional cylindrical heaters are impossible to place, directly preserving valuable cabin and storage room.
What role does the heating element play in maintaining consistent water temperature in Isotemp water heaters?
The electric heating element acts as the primary precision tool for raising and holding temperature. When the thermostat signals a drop, the 750w electric element activates to heat the water to the exact setpoint, ensuring the tank is always ready. For consistent warmth during use, the system seamlessly integrates multiple heat sources:
- The engine heat exchanger uses engine coolant from the coolant loop to heat the water while underway.
- The electrical immersion heater maintains temperature at the dock.
- A dedicated thermostat-controlled mixing valve then blends cold and hot water to deliver a safe, stable output.
How does the mixing valve in an Isotemp water heater enhance safety and comfort?
| Valve Mechanism | Safety Outcome | Comfort & Efficiency Gain |
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| Pre-Delivery Tempering | Eliminates the possibility of unmixed, stored water exiting the heater, preventing potential thermal injury at the tap. | Provides immediately usable water at a preselected temperature, removing the need for manual adjustment and reducing water waste. |
| Pressure-Balancing Spool | Instantly counteracts a drop in cold inlet pressure by proportionally restricting hot flow, averting a sudden temperature surge. | Maintains a stable shower temperature when other fixtures like washing machines or toilets are activated elsewhere in the system. |
| Fail-Safe Thermal Cutoff | A non-electrical wax actuator fully shuts off hot water outflow if the cold supply fails, ensuring a default safe state. | Operates automatically and independently, offering permanent protection without user maintenance or external power. |
| Factory-Set Limit Stop | Allows for a fixed maximum output temperature to be defined and mechanically locked, preventing accidental override. | Creates a uniform and predictable hot water experience across all household outlets, tailored to safe usage standards. |
What are the advantages of the 20L Isotemp water heater model for small vessels?
The compact Spa 20 model delivers a practical volume of hot water for its size, efficiently heated to 160 degrees using either the engine heat exchanger or its 750w electric element. Its smaller footprint and 11 gallon capacity make it the ideal balanced solution for galleys and heads on trailers, weekend sailboats, or any craft where space and weight are primary considerations.
How does the stainless steel water tank design improve durability in Isotemp and Isotherm systems?
The stainless steel inner tank is the foundational defense against corrosion and failure. Isotemp stainless steel marine water heaters are built to withstand the demanding marine environment for years. This robust material resists the corrosive effects of water heated and stored for long periods, unlike glass-lined or plastic tanks. The integrity of this hot water tank is backed by a strong 5-year limited warranty, reflecting trust in its longevity. Key protective features include:
- A brushed stainless steel cover for external protection.
- A safety mixing valve to prevent overheating.
- A pressure relief valve as a standard safety backup.