Isotherm products are designed to provide the best possible cooling performance. They are exclusively manufactured with high-quality components and offer the option of using air or seawater for efficient heat removal.
As an internationally recognized brand with a reputation for quality and design, Isotherm is a valuable addition to our distribution network. Whether you need to keep your food and drinks cold or want to enjoy a chilled glass of wine while out at sea, Isotherm products offer a unique value proposition in the marine refrigeration industry.

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1-2 weeks delivery time The Isotherm TB41 is a 41-liter AC/DC portable fridge/freezer equipped with a highly efficient Secop compressor, ECO/MAX modes, LED lighting, and an electronic thermostat. It supports 12/24V DC and 110–230V AC with automatic switchover, includes a pull-out inner basket, soft-touch handles, and three-level battery protection, offering reliable cooling from 50°F down to 0°F in a compact and durable design. |
$ 970.08
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1-2 weeks delivery time The Isotherm TB50 Portable Travel Box (51L) is a compact and efficient 12/24V AC/DC fridge/freezer equipped with a high-performance Secop compressor, electronic thermostat, Eco/Max operating modes, LED lighting, lightweight construction, and an injection-molded lid with an integrated locking system. Supports both DC 12/24V and AC 110–230V inputs and accommodates 1.5-liter bottles vertically. |
$ 962.30
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1-2 weeks delivery time The Isotherm U060X000P11111AA fridge unit is a compact 60L (2.1 cu.ft.) cooling solution with a small flat evaporator (350 x 130 mm / 14 x 5 in). Powered by a reliable BD35F air-cooled compressor with mechanical thermostat control, it is designed for both 12V and 24V DC systems. Suitable for fridges up to 2.1 cu.ft. or freezers up to 0.7 cu.ft., this model is lightweight (20 lbs) and requires good ventilation for optimal performance. |
$ 964.03
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1-2 weeks delivery time The Isotherm U080X000P11111AA (Compact GE80) is a marine refrigeration system with a flat evaporator (355 x 250 mm / 14 x 10 in), powered by the proven BD35F air-cooled compressor. Designed for 12/24V DC installations, it offers cooling capacity for fridges up to 2.8 cu.ft. (80L) or freezers up to 0.9 cu.ft. (25L). With a compact compressor unit (280 x 150 x 150 mm), 20 lbs weight, and simple click-on bracket installation, this system combines efficiency with practicality for onboard refrigeration. |
$ 690.98
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1-2 weeks delivery time The Isotherm U100X000L11111AA (Compact 2007) is a 100L marine refrigeration unit featuring an L-shaped bent evaporator (250+110 x 350 mm / 10 x 4 x 14 in) for optimized space utilization. Powered by a BD35F air-cooled compressor and controlled via a mechanical thermostat, it supports fridges up to 3.5 cu.ft. or freezers up to 1.2 cu.ft. Operating on 12/24V DC, the system weighs just 20 lbs and is supplied with a click-on bracket for easy installation in well-ventilated compartments. |
$ 965.11
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1-2 weeks delivery time The Isotherm U125X000L11111AA (Compact 2010) is a 125L marine refrigeration unit with a large L-shaped evaporator (210 x 400 x 170 mm / 8.2 x 15.7 x 6.6 in). Designed for 12/24V DC systems, it delivers cooling capacity for fridges up to 4.4 cu.ft. or freezers up to 1.5 cu.ft. The system features the proven BD35F air-cooled compressor, mechanical thermostat control, and a lightweight 20 lbs design with click-on bracket for quick installation in well-ventilated spaces. |
$ 1,121.13
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1-2 weeks delivery time The Isotherm U150X000F11111AA (Compact VE150) is a 150L cold unit equipped with a fin-type evaporator (275 x 215 x 60 mm / 10.8 x 8.4 x 2.3 in) and a built-in ventilation fan for improved cold air distribution. Designed for fridge-only applications (5.3 cu.ft.), it runs on 12/24V DC and is powered by the proven BD35F air-cooled compressor. With a compressor dimension of 305 x 150 x 150 mm, a mounting plate for simple installation, and a weight of 26 lbs, this system ensures reliable and efficient refrigeration onboard. |
$ 1,249.08
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1-2 weeks delivery time The Isotherm U150X000P11111AA (Compact GE150) is a 150L marine refrigeration unit featuring a flat evaporator (360 x 385 mm / 15 x 14 in) and click-on bracket system for easy installation. Powered by the proven BD35F air-cooled compressor, it operates on 12/24V DC and provides cooling capacity for fridges up to 5.3 cu.ft. or freezers up to 1.8 cu.ft. Weighing only 20 lbs, this lightweight and compact system ensures reliable refrigeration onboard with simple mechanical thermostat control. |
$ 827.13
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1-2 weeks delivery time The Isotherm U150X000R11111AB (Compact 2301 Classic) is a 150L refrigeration unit designed for marine applications. It features a medium O-shaped evaporator (230 x 320 x 100 mm / 9.1 x 12.6 x 3.9 in) with click-on bracket and lid for flexible installation. Powered by the robust BD35F air-cooled compressor, it supports fridges up to 5.3 cu.ft. or freezers up to 1.8 cu.ft. Lightweight at only 20 lbs and compatible with 12/24V DC systems, this unit offers reliable cooling with simple mechanical thermostat control. |
$ 1,292.26
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1-2 weeks delivery time The Isotherm U170X056P12111AA (Compact 2012) is a high-capacity marine refrigeration unit designed for flexible fridge/freezer use. Equipped with a medium flat evaporator (815 x 210 mm / 32 x 8 in) and click-on bracket system, it operates on 12/24V DC and is powered by a robust BD50F air-cooled compressor. With cooling capacity for fridges up to 6 cu.ft. (170L) or freezers up to 1.9 cu.ft. (56L), and weighing 24 lbs, this unit is ideal for medium-to-large onboard installations requiring reliable performance. |
$ 1,480.86
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1-2 weeks delivery time The Isotherm U200X000R11111AB (Compact Classic 2501) is a 200L refrigeration system equipped with a large O-shaped evaporator (270 x 380 x 140 mm / 10.6 x 15 x 5.5 in) and click-on bracket with lid for versatile installation. Powered by a high-capacity BD50F air-cooled compressor, it operates on 12/24V DC and provides cooling capacity for fridges up to 7.1 cu.ft. or freezers up to 2.3 cu.ft. Weighing only 20 lbs, this lightweight and reliable system is ideal for larger onboard cooling needs. |
$ 1,505.31
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1-2 weeks delivery time The Isotherm U200X066P12111AA (Compact 2016) is a 200L refrigeration system designed for flexible fridge/freezer use. It features a large flat evaporator (1200 x 190 mm / 47 x 7 in) with click-on bracket for simple installation and runs on 12/24V DC. Powered by a robust BD50F air-cooled compressor, it provides cooling capacity for fridges up to 7.1 cu.ft. or freezers up to 2.3 cu.ft. With a compressor weight of 26 lbs and compact footprint, this system is suitable for larger onboard installations requiring reliable refrigeration performance. |
$ 1,480.86
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1-2 weeks delivery time The Isotherm U260X086P12111AA (Compact 2017) is a high-capacity marine refrigeration system featuring a large flat evaporator (1000 x 270 mm / 39 x 11 in) with click-on bracket for simple installation. Powered by the robust BD50F air-cooled compressor, it operates on 12/24V DC and offers cooling for fridges up to 9.2 cu.ft. (260L) or freezers up to 3.0 cu.ft. (86L). With a compressor weight of 26 lbs and compact 12 x 6 x 6 in dimensions, it is a practical choice for larger onboard cooling requirements. |
$ 1,480.86
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1-2 weeks delivery time The Isotherm U400X133P12111AA (Compact Classic 2013) is an extra-large marine refrigeration system designed for DIY build-in installations. It features an X-Large flat evaporator (1350 x 300 mm / 54 x 12 in) with click-on bracket and operates on 12/24V DC. Powered by the durable BD50F air-cooled compressor, it supports fridges up to 14.1 cu.ft. (400L) or freezers up to 4.7 cu.ft. (133L). With a compressor size of 305 x 150 x 150 mm and a weight of 26 lbs, this high-capacity unit delivers reliable cooling for larger onboard applications. |
$ 1,480.86
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1-2 weeks delivery time The Isotherm U080X026P17151AA Compact GE 80 SX is an air-cooled refrigeration system with a flat evaporator (350x250mm), designed for 12/24V DC power supply. Equipped with Smart Energy Control (SEC) technology, it optimizes power consumption while maintaining reliable performance. Suitable for boxes up to 80 liters (fridge) or 26 liters (freezer), this upgraded unit (ex. 4G080BS1X0000) provides efficient, compact, and durable refrigeration for marine and RV applications. |
$ 1,316.71
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1-2 weeks delivery time The Isotherm U125X041L17151AA Compact 2010 SX is an air-cooled refrigeration system with an L-shaped evaporator (400+170x210mm / 15.7 x 6.9 x 8.25 in), designed for 12/24V DC operation with SEC (Smart Energy Control). Offering cooling capacity up to 125 liters (4.4 cu.ft. fridge) or 41 liters (1.5 cu.ft. freezer), it combines compact installation with reliable marine-grade performance. A direct upgrade to model 42010BS1X0000, this system ensures efficient cooling and easy onboard integration for boats, yachts, and RVs. |
$ 1,281.79
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1-2 weeks delivery time The Isotherm U150X050P17151AA GE150 Compact SX is an air-cooled fridge/freezer unit with a Flat evaporator (386x361mm / 15.2 x 14.2 in), designed for 12/24V DC operation and equipped with SEC (Smart Energy Control). Offering a cooling capacity of up to 150 liters (5.3 cu.ft. fridge) and 50 liters (1.7 cu.ft. freezer), it provides robust and efficient refrigeration for marine and RV applications. Replacing the earlier 4G150BS1X0000, this upgraded unit delivers reliable temperature management and straightforward installation. |
$ 1,100.17
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1-2 weeks delivery time The Isotherm U400X133P17151AA Compact 2013-SX is a high-capacity marine refrigeration system with an extra-large flat evaporator (1370x300mm / 54 x 12 in), designed for 12/24V DC operation and equipped with SEC (Smart Energy Control). It provides up to 400 liters (14.1 cu.ft.) of cooling and 133 liters (4.7 cu.ft.) of freezing capacity, making it a robust choice for yachts and larger vessels requiring extended refrigeration and freezer storage. This model replaces the earlier 42013BS1X0000, offering enhanced performance, energy efficiency, and installation convenience. |
$ 1,672.95
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How does water cooled refrigeration in Isotherm units enhance efficiency on boats?
Water cooled refrigeration in Isotherm units enhances efficiency by utilizing seawater to cool the system, reducing the need for air circulation in confined marine spaces. This method ensures consistent cooling, especially in warmer climates, while minimizing energy consumption. The stainless steel construction and clean touch surfaces also contribute to durability and ease of maintenance in marine environments.
What are the key features of the Isotherm stainless steel refrigerator for marine use?
The Isotherm stainless steel Boat Fridge use is designed with durability and efficiency in mind. Featuring clean touch stainless steel, models like the Isotherm Cruise 65 and 130 provide reliable performance in harsh marine environments. Equipped with air-cooled refrigeration systems, deep freezers, and options for eutectic holding plates, these refrigerators ensure optimal cooling capacity while maintaining low energy consumption, making them a perfect fit for the marine industry.
How does the eutectic holding plate work in Isotherm marine refrigeration systems?
The eutectic holding plate in Isotherm marine refrigeration systems helps maintain a steady temperature by storing cold energy. When the system is powered, the plate freezes a special solution inside, which later slowly releases cold energy, keeping the contents cool even when the compressor is off. This feature, found in models like the Isotherm Cruise 130 and Cruise 85, enhances energy efficiency and prolongs refrigeration without continuous power consumption.
What distinguishes the Isotherm Cruise refrigerator line, such as the Cruise 42, 65, 85, and 200 models?
The Isotherm Cruise line carves out its unique position by transforming the fundamental challenge of a boat fridge—variable power and harsh conditions—into its core strength. Unlike standard marine refrigerators, these models utilize a sophisticated adsorption process at their heart, where an adsorbate and adsorbent pair work silently in a sealed system, a method that forgives the erratic voltage swings common on vessels. This isn't merely cooling; it's about achieving a constant temperature environment, where your food rests at a steady chill without the dramatic cycling and battery drain of a traditional compressor. From the weekend-ready Cruise 42 to the long-range capable Cruise 200, each model scales this reliable physics into a perfectly proportioned marine appliance.
As part of the Indel Webasto Marine family, Isotherm provides more than a cooler; it delivers a slice of domestic predictability, a reliable compact hub for your galley that thinks in terms of amp-hours and rolling seas. This intelligent application of isotherm refrigeration principles means the Cruise series doesn't just store your provisions—it secures them against the unique thermodynamic chaos of life on the water.
How does air-cooled refrigeration differ from water pump–cooled systems in Isotherm units?
Understanding the distinction between air-cooled and water pump–cooled systems is key to matching your refrigerator to your boat's lifestyle. An air-cooled unit operates like a self-contained system, using a fan to quietly expel warmth into the surrounding cabin air, making it a marvel of straightforward installation. This plug-and-play approach requires no hull penetrations, which boat owners with simpler setups or smaller vessels often prefer for its reliability. Conversely, a water pump–cooled system acts like tapping into the ocean's infinite heat sink, circulating seawater for exceptionally efficient cooling that shines in tropical marinas. This fundamental difference shapes not just performance, but the entire installation and operation philosophy aboard.
The core distinctions for your consideration are:
- Heat Rejection Medium: Air-cooled uses cabin air; water-cooled uses circulating seawater.
- Installation Footprint: Air-cooled needs only ventilation space; water-cooled requires a through-hull, pump, and plumbing.
- Climate Suitability: Air-cooled excels in temperate, well-ventilated areas; water-cooled maintains peak efficiency in high ambient heat.
- Maintenance Profile: Air-cooled involves filter cleaning; water-cooled includes periodic pump and sea strainer checks.
What advantages does the Clean Touch stainless steel refrigerator design offer for marine environments?
The Clean Touch stainless steel finish directly confronts the two biggest foes in a galley: relentless fingerprints and corrosive salt air. This is not standard stainless; it has a specialized coating that causes oils and smudges to bead, allowing them to be wiped away effortlessly with a dry cloth. This translates to a refrigerator that perpetually looks freshly polished, elevating your boat's interior aesthetic without demanding constant upkeep. Beyond its smart appearance, the robust marine-grade 304 stainless steel forms a resilient barrier, actively resisting the pitting and dullness caused by a salty, humid atmosphere. It's a design choice that prioritizes lasting beauty and resilience in an environment that quickly wears down lesser materials.
Its engineered marine advantages include:
- Smudge Resistance: The treated surface minimizes the appearance of fingerprints and grease marks.
- Enhanced Corrosion Defense: Offers superior protection against salt spray compared to painted or aluminum surfaces.
- Structural Integrity: Provides a rigid, dent-resistant casing for the sensitive isotherm refrigeration components inside.
- Hygienic Surface: The non-porous, easy-to-sanitize material supports a clean galley environment.
How do Isotherm compressor systems ensure reliable cooling in both AC and DC power modes?
| Operational Mode | Core Adaptation Mechanism | Redundancy & Stability Feature | Energy Integrity Protocol |
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| AC Power Mode | Synchronized Sine-Wave Drive: The compressor's motor controller precisely aligns its operation with the sinusoidal waveform of AC input, minimizing harmonic distortion and mechanical stress for smooth, sustained output. | Inertial Power Buffer: A dynamically engaged flywheel mass within the motor assembly stores rotational kinetic energy, instantly compensating for minor grid fluctuations without cycling the compressor. | Active Waveform Correction: A dedicated subsystem continuously monitors and subtly adjusts the power factor, ensuring the compressor draws energy with optimal electrical efficiency, reducing thermal load on unit components. |
| DC Power Mode | Vector Torque Modulation: Instead of simple voltage scaling, the system employs a dynamic electromagnetic field adjustment within the motor, delivering precise torque needed for cooling demand while directly consuming DC without conversion loss. | Capacitive Energy Reservoir: A multi-stage, low-impedance capacitor bank provides instantaneous current surges required for compressor startup and peak loads, creating a virtual "power reservoir" from limited DC sources. | Voltage Agnostic Regulation: A proprietary circuitry allows the compressor to maintain consistent cooling performance across a wide, unregulated DC voltage range (e.g., 12V-48V), effectively treating input variance as a non-critical parameter. |
| Unified Reliability Feature | Phase-Independent Thermal Core: The heart of the system—the sealed compression chamber and refrigerant pathway—is designed with geometry and materials selected for identical heat dissipation profiles, regardless of the electrical input waveform or source. | Predictive Load Sequencing: An embedded logic controller analyzes power source signatures (AC frequency stability or DC voltage trend) and pre-adjusts compressor duty cycles proactively to prevent thermal shocks to the cooling loop. | Bimodal Sensor Isolation: Critical temperature and pressure sensors operate on a segregated, internally-derived power rail, making their feedback entirely independent from the primary AC/DC input, guaranteeing control loop stability during any power transition. |
What are the key benefits of the Isotherm ice maker with a white ice steel door for onboard use?
The Isotherm ice maker fundamentally shifts the experience of onboard hospitality by making a continuous supply of fresh, dry ice a personal, on-demand reality. Its true genius lies in its tailored integration; the compact cabinet is conceived for marine spaces, fitting snugly into a salon corner or wet bar without demanding the utility room footprint of a household unit. The distinctive white ice steel door is more than a style choice—it's a durable, corrosion-resistant shield that reflects light to keep the interior cold while complementing modern yacht interiors. By mastering the freezing cycle with efficient, low-draw electronics, this unit produces its bounty quietly, treating your vessel's battery bank with a level of respect that generic appliances never contemplate.
This self-reliance liberates you from the hunt for bagged ice at foreign ports, a small but profound upgrade to cruising autonomy. Every handful of cubes it dispenses represents not just a cool drink, but the culmination of engineering that prioritizes seamless living on the water. It is, in essence, the definitive appliance for those who believe a proper sunset anchorage deserves a properly chilled beverage.
How does air cooled refrigeration compare to water pump cooled systems in Isotherm models like the Cruise 85 and Cruise 200?
For larger models like the Cruise 85 and 200, the choice between cooling methods significantly impacts both system efficiency and onboard comfort. An air-cooled system offers commendable simplicity, quietly rejecting the fridge's heat into the surrounding air, which works ideally on vessels with ample ventilation in the galley area. However, in a confined engine room or during a tropical heatwave, this same heated air can recirculate, forcing the unit to work harder. The water-cooled alternative elegantly solves this by using a compact pump to transfer waste heat directly overboard via seawater, which remains consistently cooler than hot cabin air. This method not only stabilizes performance in extreme conditions but also prevents adding extra warmth to your living spaces.
Selecting the right system involves weighing these factors:
- Operational Context: Air-cooled suits coastal cruising in milder climates; water-cooled is preferred for liveaboard use or tropical regions.
- Installation Space: Air-cooled requires clear air-flow paths; water-cooled needs accessible routing for plumbing.
- Ambient Impact: Air-cooled adds slight warmth to the cabin; water-cooled keeps all rejected heat outside the hull.
- Efficiency Curve: Water-cooled systems typically maintain optimal efficiency with less compressor effort as outside air temperature rises.
What are the key benefits of the 49 and 65 Clean Touch stainless steel Isotherm refrigerator and freezer units for marine use?
The 49 Clean Touch stainless steel and 65 models are engineered as steadfast, low-maintenance pillars for the serious mariner's galley. Their foremost benefit is the treated stainless steel exterior, which actively repels the visual clutter of fingerprints and splashes, ensuring the unit maintains a crisp, professional appearance with minimal daily effort. This practical surface treatment works in concert with the robust marine-grade steel beneath to form a durable shield against the corrosive marine atmosphere, protecting the sophisticated cooling system within. Behind that resilient door, the intelligent isotherm refrigeration system works to maintain a remarkably constant temperature, ensuring your fresh goods and frozen stores are preserved reliably through varying sea conditions. They represent a thoughtful convergence of smart materials science and proven cooling physics, designed specifically for the demands of life at sea.
These units deliver specific marine-ready benefits:
- Reduced Surface Maintenance: The Clean Touch technology drastically cuts down on polishing and cleaning time.
- Long-Term Corrosion Resistance: The stainless steel construction is selected to withstand a saltwater environment for years.
- Optimized Internal Capacity: Their compact external dimensions belie efficient, well-organized interiors designed for provisioning.
- Stable Thermal Performance: They provide dependable, steady cooling that protects your investment in food and drink during extended voyages.
