Isotherm products are high-quality yacht refrigeration and cooling solutions. They are used onboard boats and yachts to provide efficient and reliable cooling for perishables, beverages, and supplies, ensuring that sailors and boaters can enjoy fresh and chilled items during their voyages. These products are designed to fit various vessel sizes and layouts, making them a valuable addition to marine equipment for a comfortable and enjoyable sailing experience. Isotherm, under Indel Webasto Marine, a successful joint venture between the internationally known Indel B and the leading automotive supplier Webasto, extends its product range to include more specialized cooling solutions like the Isotherm Cruise 130 and Drawer 160 refrigerators. These units are known for their elegant design and efficient use of space, ideal for integration into the limited areas available on boats. The brand prioritizes energy-efficient operation, with systems like the water-cooled refrigeration options that consume an absolute minimum of battery power and operate noiselessly, ensuring they do not disrupt the onboard experience. These cooling units, from ice makers to wine cellars, are tailored to meet the demanding needs of the marine industry, offering customized solutions that combine luxurious comfort with thoroughly reliable and energy-saving engineering.
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1-2 weeks delivery time The Isotherm 3053CC2B00000 BI 53 F is a 53-liter built-in stainless-steel marine freezer operating on 12/24V DC and capable of maintaining temperatures from 0°C to -20°C. It includes interior lighting, a plastic bottom liner and a removable wire basket for structured storage. This SP version features an air-cooled Secop BD50F compressor that can be mounted remotely up to 1.5 meters away, and comes equipped with Click-On mounting hardware and X-couplings for quick and secure installation. The freezer measures 465 + 165 x 645 x 425 mm, weighs 26 kg and has an average energy consumption of approx. 260 Wh/24 h (ISO 15502:2005 / EN 153:2006).
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$ 4,121.25
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1-2 weeks delivery time The Isotherm 3053DC2B00000 BI 53 F is a 53-liter built-in marine freezer featuring a stainless-steel interior, LED lighting, a plastic bottom liner and a removable wire basket. Operating on 12/24V DC, it delivers temperatures from 0°C down to -20°C and is equipped with a Magnum sea water–cooled Secop BD50F compressor for enhanced cooling efficiency. The remote compressor can be mounted up to 1.5 meters away and comes supplied with Click-On mounting hardware and X-couplings. The freezer dimensions are 465 + 165 x 645 x 425 mm, weight 26 kg, and the average energy consumption is approx. 260 Wh/24 h (ISO 15502:2005 / EN 153:2006). A stainless-steel outer flange is optionally available.
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$ 5,322.70
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1-2 weeks delivery time The Isotherm 3135FA2B00000 YZG is a 135-liter built-in refrigeration box featuring top and side access, a white insulated design and a ventilated eutectic cooling system for stable temperature retention. Suitable for 12/24V installations, it provides efficient refrigeration performance in marine environments and is optimized for easy integration into built-in compartments.
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$ 3,400.26
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1-2 weeks delivery time The Isotherm 44901HE100000 ASU 4901 is a Magnum sea water–cooled refrigeration unit equipped with a large eutectic holding plate and ASU control, designed for cooling insulated boxes up to 500 liters. Operating on 12/24V DC, it provides high cooling capacity, reduced energy consumption and stable temperature retention, making it suitable for large marine refrigeration systems.
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$ 5,256.35
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1-2 weeks delivery time The Isotherm 45802HE100000 Magnum ASU uses a BD80F sea water–cooled compressor with a high-capacity ASU control system, designed for refrigerator boxes up to 325 liters or freezer boxes up to 105 liters. Operating on 12/24V DC, it provides strong cooling performance, reduced power consumption and reliable temperature stability for medium and large marine refrigeration installations.
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$ 4,728.96
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1-2 weeks delivery time The Isotherm 6D03A1DH00000 is a 12V marine air heater delivering 10 kW of heat output, equipped with four Ø60 mm outlets, an adjustable fan speed and a ductable air intake. Built with a stainless-steel housing and high-temperature-resistant components, it is designed for vessels up to 12 m and offers compact installation with 450 × 135 × 300 mm dimensions and a weight of 5.5 kg.
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$ 597.24
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1-2 weeks delivery time The Isotherm 6D03A1DHF0000 is a 12V marine air heater with a ferrite core for improved electrical stability, delivering 10 kW of heating power through four Ø60 mm outlets. It features an adjustable fan speed, a ductable air intake and a stainless-steel housing with high-temperature-resistant components. Compact at 450 × 135 × 300 mm and 5.5 kg, it is suitable for vessels up to 12 meters.
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$ 927.63
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1-2 weeks delivery time The Isotherm 6D04B1DH00000 is a 24V marine air heater delivering 10 kW of heat output through four Ø60 mm outlets, designed for vessels up to 12 meters. It features adjustable fan speed, a ductable air intake, a stainless-steel housing and high-temperature-resistant components. Compact and lightweight, it measures 450 × 135 × 300 mm and weighs 5.5 kg.
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$ 628.67
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1-2 weeks delivery time The Isotherm 6D04B1DHF0000 is a 24V marine air heater with a ferrite core for improved electrical stability, delivering 10 kW of heating power through four Ø60 mm outlets. It features adjustable fan speed, a ductable air intake, stainless-steel housing and high-temperature-resistant components. Compact at 450 × 135 × 300 mm and 5.5 kg, it suits vessels up to 12 meters.
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$ 927.63
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1-2 weeks delivery time The Isotherm B030TNAAB12111AA BI 30L is a 30-liter top-loading built-in fridge with a black IPX5 splash-proof digital display, powered by the compact Secop BD1.4F FSD micro compressor. It operates on 12/24V, offers a 0°C to +10°C range, consumes 265 Wh/24h and features internal baskets and a lightweight 449 × 724 × 240 mm construction weighing 18 kg.
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$ 1,644.17
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1-2 weeks delivery time The Isotherm B041TNAAP17111A1 BI 41(II) is a 41-liter built-in fridge/freezer with stainless-steel interior, plastic floor and storage basket, operating from +10°C to –12°C. Powered by a Secop BD35F air-cooled compressor that can be mounted up to 1.5 m away, it runs on 12/24V and offers a compact 450 × 496 × 340 mm footprint (plus 165 mm compressor height section) with a weight of 15.5 kg and 270 Wh/24h consumption.
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$ 1,578.65
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1-2 weeks delivery time The Isotherm B041TNAAP17111AR BI 41(II) is a 41-liter built-in marine fridge/freezer with stainless-steel interior, operating between +10°C and –12°C. It includes a remote Secop BD35F air-cooled compressor that can be installed up to 2 m away using X-couplings. The unit weighs 15.5 kg, consumes 270 Wh/24h and features compact dimensions of 380 × 395 × 395 mm plus a 165 mm compressor height section.
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$ 1,987.29
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1-2 weeks delivery time The Isotherm B041TNAAP17311AR BI 41(II)/SP is a 41-liter built-in fridge/freezer with stainless-steel interior and a remote SP air-cooled compressor installed at 2 + 1.2 meters via X-couplings. Operating from +10°C down to –12°C, it runs on 12/24V DC, weighs 15.5 kg, and features compact dimensions of 380 × 395 × 395 mm with an additional 165 mm compressor section. Average consumption is 270 Wh/24h.
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$ 2,591.50
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1-2 weeks delivery time The Isotherm B041TNAAP17411AR BI 41(II)/Magnum is a 41-liter built-in marine fridge/freezer featuring a remote Magnum sea-water–cooled compressor installed up to 2 meters away via X-couplings. The unit operates between +10°C and –12°C, uses 12/24V DC power, and offers compact dimensions of 380 × 395 × 395 mm plus a 165 mm compressor section, with a total weight of 15.5 kg and 270 Wh/24h average consumption.
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$ 2,912.82
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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.
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$ 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.
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$ 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.
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$ 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.
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$ 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.
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$ 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.
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$ 904.19
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Indel Webasto: How Is the Isotemp Basic 40 Typically Used on Watercraft?
Isotemp Basic 40 is typically used on watercraft for the purpose of providing hot water onboard. As a dependable Boat Hot Water Heater, it ensures a reliable supply of hot water for various applications, such as showering, dishwashing, and general domestic use on boats and yachts. This water heater is especially valuable for enhancing the comfort and convenience of passengers and crew during their maritime journeys.
In addition to water heating, Isotemp and Indel Isotherm products are high-quality yacht refrigeration and cooling solutions. They are used onboard boats and yachts to provide efficient and reliable cooling for perishables, beverages, and supplies, ensuring that sailors and boaters can enjoy fresh and chilled items during their voyages. These products are designed to fit various vessel sizes and layouts, making them a valuable addition to marine equipment for a comfortable and enjoyable sailing experience.
Isotherm, under Indel Webasto Marine, a successful joint venture between the internationally known Indel B and the leading automotive supplier Webasto, extends its product range to include more specialized cooling solutions like the Isotherm Cruise 130 and Drawer 160 refrigerators. These units are known for their elegant design and efficient use of space, ideal for integration into the limited areas available on boats. The brand prioritizes energy-efficient operation, with systems like the water-cooled refrigeration options that consume an absolute minimum of battery power and operate noiselessly, ensuring they do not disrupt the onboard experience. These cooling units, from ice makers to wine cellars, are tailored to meet the demanding needs of the marine industry, offering customized solutions that combine luxurious comfort with thoroughly reliable and energy-saving engineering. offer a wide array of refrigeration solutions to meet the diverse needs of watercraft. Products range from the compact Isotherm Cruise 42 refrigerators to the more spacious 130 liter models, all designed to operate efficiently with the lowest power consumption possible. These refrigerators and freezers, including specialized units like the clean touch stainless steel and low profile versions, are built to withstand the harsh marine environment, ensuring durability and reliability. The development of these systems involves careful research to ensure they not only provide convenience but also align with the stringent energy and space constraints typical on boats and yachts. This comprehensive approach to designing marine appliances underscores the commitment of Indel Webasto Marine to delivering high-quality, innovative solutions tailored specifically for marine applications.
What is Isotherm Cold Plate and how does it improve food storage conditions on a vessel?
Isotherm Cold Plate is a refrigeration system designed to enhance food storage conditions on vessels. It utilizes advanced technology to maintain a consistently low temperature, ensuring that perishables and provisions stay fresh for extended periods. By efficiently regulating the temperature within the refrigerator or freezer compartments, Isotherm Cold Plate contributes to preserving food quality and reducing waste during extended voyages on boats and yachts.
The Isotherm Cold Plate system is part of Indel Webasto
Marine's extensive range of cooling solutions tailored for the marine environment. This range includes classic refrigerator designs and innovative models like the Isotherm Cruise refrigerators, which are available in various sizes, including the practical 130-liter and space-saving 5.5 cubic feet models. Designed and manufactured in Sant'Agata Feltria, Italy, these refrigeration units, whether air-cooled or water-cooled, are engineered to meet the unique demands of marine applications. They are constructed to withstand the violent movements common in marine settings and offer features such as low profile designs for integration in tight spaces aboard cruisers and other large vessels. The collaboration between these two renowned companies highlights their commitment to providing high-quality, durable, and energy-efficient refrigeration solutions that enhance comfort on the water.
What maintenance and care recommendations are necessary for Isotherm and Isotemp products to ensure their long lifespan and optimal performance on marine vessels?
To ensure the long lifespan and optimal performance of Isotherm and Isotemp products on marine vessels, regular maintenance and care are essential. Here are some recommendations:
- Periodically clean the interior of Isotherm refrigeration units, including the Cold Plate and Cruise models, to prevent the buildup of ice and frost, which can affect cooling efficiency.
- Inspect the gaskets and seals on these products, such as Isotemp Basic 40 and Isotherm Freeline 115, to ensure they remain airtight, preventing cold air from escaping and warm air from entering the refrigerated compartments.
- Check and clean the condenser coils on units like Isotherm Magnum and Isotemp Slim 15 to remove dust and debris, as this can improve overall performance and energy efficiency.
By following these maintenance practices, boat and yacht owners can extend the lifespan and reliability of their Isotherm and Isotemp equipment, ensuring it continues to provide optimal cooling and storage solutions onboard.
Additionally, for Isotherm Marine refrigeration systems, it is crucial to regularly inspect and maintain the water cooling systems, especially in models like the Isotherm SP, which utilize water-cooled technology to enhance efficiency in warmer climates. These systems must be checked for scale build-up and proper water flow to prevent overheating and ensure efficient operation. The air-cooled models, suitable for less demanding environments, also require occasional airflow checks to keep them running smoothly. Utilizing travel boxes designed for the harsh marine environment can protect these units during off-season storage, further extending their service life. With Isotherm products being a prominent choice among 160 major boat manufacturers worldwide, adherence to these maintenance routines is vital for preserving the quality and performance expected from a brand renowned for its reliable and innovative marine solutions, all engineered and perfected in Sant'Agata Feltria, Germany.