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 Isotherm SFE00016AA is a 9×13 mm stainless-steel flexible tube with 1/2" threaded ends and a 215 mm length. Designed for Isotemp Basic and Slim-B heaters, it provides a durable, corrosion-resistant connection section that absorbs vibration, supports compact routing and ensures a secure, leak-free link within marine hot-water circuits. |
$ 30.63
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1-2 weeks delivery time The Isotherm SFE00020AA is a stainless-steel flexible tube with 1/2" female–female threaded ends and a 200 mm length, designed for Isotemp Basic Double-Coil water heaters. It offers a corrosion-resistant, vibration-absorbing connection section that ensures secure sealing and compact routing in marine hot-water circuits. |
$ 42.12
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1-2 weeks delivery time The Isotherm SFE00021AA is a stainless-steel flexible tube with 1/2" female–female threaded ends and a 250 mm length. Suitable for Isotemp Basic, Slim, SPA and Square heaters, it provides a corrosion-resistant, vibration-absorbing connection that ensures secure sealing and optimal routing in marine hot-water plumbing systems. |
$ 42.12
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1-2 weeks delivery time The Isotherm SGB00047AA is a two-piece fixing bracket kit designed for securing Isotemp Basic water heaters in 24, 30, 40, 50 and 75 L capacities. The brackets provide rigid mounting support, vibration resistance and correct positioning in marine technical compartments, ensuring safe and stable installation under dynamic vessel conditions. |
$ 229.73
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1-2 weeks delivery time The Isotherm SGB00049AA is a two-piece fixing foot kit designed for securing Isotemp Slim water heaters in 15, 20 and 25 L capacities. These corrosion-resistant mounting feet provide stable floor or platform support, reduce vibration transfer and ensure safe, rigid installation in compact marine technical spaces. |
$ 122.52
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1-2 weeks delivery time The Isotemp SGB00074AA fixing bracket kit is designed for secure mounting of Slim Square 16L water heaters. It provides stable support for wall or compartment installation, using corrosion-resistant hardware suitable for marine environments. Compatible with all Isotemp Slim Square 16L models. |
$ 126.36
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1-2 weeks delivery time The Isotherm SGB00165AA is a two-piece fixing bracket kit designed for SPA 30, 40 and 50 L marine water heaters. These corrosion-resistant brackets provide secure mounting to bulkheads or platforms, ensuring stable positioning, vibration resistance and safe installation in technical compartments. |
$ 195.27
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1-2 weeks delivery time The Isotherm SGB00166AA is a two-piece fixing bracket kit designed for SPA water heaters in 15, 20 and 25 L capacities. These corrosion-resistant brackets provide secure bulkhead or platform mounting, ensuring stable positioning, reduced vibration transfer and reliable installation in marine technical spaces. |
$ 149.33
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1-2 weeks delivery time The Isotherm SGH00010AA is a cut-out display panel designed for the Isotemp Slim 20L water heater, featuring integrated controls and a built-in mixing valve interface. It provides temperature adjustment, system status indication, and accurate regulation of mixed water output, ensuring stable performance in compact marine installations. |
$ 1,359.22
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1-2 weeks delivery time The Isotherm SGH00016AA is a recessed cut-out display panel for the Slim/B 15L marine water heater, providing temperature control, system status indication, and a dedicated interface for the built-in mixing valve. Designed for compact marine setups, it ensures accurate mixed-water regulation and stable heater performance. |
$ 1,140.97
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1-2 weeks delivery time The Isotherm SGH00026AA SPA Water Heater is a 30/40-liter 230V, 750W marine heating unit equipped with a safety valve and an integrated mixing valve. Designed for compact onboard installations, it provides stable hot-water output, controlled temperature delivery, and reliable pressure protection for small to mid-size vessels. |
$ 2,749.06
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1-2 weeks delivery time The Osculati 50.291.01 Isotemp Indel Webasto Slim marine boiler is a compact 25-litre water heater designed for reliable onboard hot water production in yachts, sailboats, and recreational vessels where installation space is limited. Manufactured with a stainless steel internal tank, heat exchanger coil, and external casing, the boiler provides excellent corrosion resistance and long-term durability in marine environments. The unit operates either through a 750W 220V nickel-plated copper heating element or via a heat exchanger connected to the engine cooling circuit. Designed for both vertical and horizontal installation, the slim-profile boiler features polyurethane insulation, double thermostat protection, integrated magnesium anode protection, and a 7-bar safety valve for dependable marine operation. |
$ 999.53
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1-2 weeks delivery time The Osculati 50.291.04 Isotemp Indel Webasto Basic marine boiler is a high-capacity 75-litre water heater designed for reliable onboard hot water production in yachts, motorboats, and recreational vessels. Manufactured with a stainless steel internal tank, heat exchanger coil, and external casing, the boiler provides excellent corrosion resistance and long-term durability in marine environments. The unit operates either through a 750W 220V nickel-plated copper heating element or via a heat exchanger connected to the engine cooling circuit. Designed for both vertical and horizontal installation, the boiler features polyurethane insulation, double thermostat protection, integrated magnesium anode protection, and a 7-bar safety valve for dependable marine operation. |
$ 1,798.48
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1-2 weeks delivery time The Osculati 50.291.20 Isotemp Indel Webasto Slim marine boiler is a compact 20-litre water heater designed for reliable onboard hot water production in yachts, sailboats, and recreational vessels where installation space is limited. Manufactured with a stainless steel internal tank, heat exchanger coil, and external casing, the boiler provides excellent corrosion resistance and long-term durability in marine environments. The unit operates either through a 750W 220V nickel-plated copper heating element or via a heat exchanger connected to the engine cooling circuit. Designed for both vertical and horizontal installation, the slim-profile boiler features polyurethane insulation, double thermostat protection, integrated magnesium anode protection, and a 7-bar safety valve for dependable marine operation. |
$ 918.92
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1-2 weeks delivery time The Osculati 50.292.06 Isotemp SPA50 marine boiler is a compact onboard water heater designed for efficient hot water production in yachts, motorboats, and recreational vessels. The unit features an AISI 316 stainless steel internal tank and corrugated heat exchanger coil for superior corrosion resistance and durability in marine environments. The grey polypropylene external casing reduces weight while maintaining protection and durability. The boiler operates with a 750W 220V nickel-plated copper heating element and includes CFC-free polyurethane insulation, integrated magnesium anode protection, and a 6-bar safety valve. Stainless steel AISI 304 mounting brackets provide secure installation onboard. |
$ 970.94
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1-2 weeks delivery time The Osculati 50.292.07 Isotemp SPA60 marine boiler is a compact onboard water heater designed for efficient hot water production in yachts, motorboats, and recreational vessels. The unit features an AISI 316 stainless steel internal tank and corrugated heat exchanger coil for superior corrosion resistance and durability in marine environments. The grey polypropylene external casing reduces weight while maintaining protection and durability. The boiler operates with a 750W 220V nickel-plated copper heating element and includes CFC-free polyurethane insulation, integrated magnesium anode protection, and a 6-bar safety valve. Stainless steel AISI 304 mounting brackets provide secure installation onboard. |
$ 988.41
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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.