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 U100X035A17161AA (ITC 3201) is a compact air-cooled refrigeration unit with a 2L holding plate and digital Intelligent Temperature Control (ITC+). It supports up to 100 liters (3.5 cu.ft.) of refrigeration or 35 liters (1.2 cu.ft.) of freezing capacity, operating on 12/24V DC. Equipped with Eco, ITC, and Overcooling modes, along with adjustable battery protection, it provides energy-efficient and reliable performance for marine and RV installations. Replacing the earlier model 43201EE100000, this upgraded unit ensures precise control, long-lasting cooling, and optimized power management. |
$ 2,308.61
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1-2 weeks delivery time The Isotherm U150X050A17161AA is an Air Cooled Refrigeration Unit with ITC+ (3701) digital control and a 3-liter holding plate. It provides 150 liters of fridge capacity and 50 liters of freezer capacity, operating on 12/24V. Reliable and efficient, it replaces the previous model 43701EE100000. |
$ 2,608.97
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1-2 weeks delivery time The Isotherm B016TNAAB12111AA BI 16 is a compact 16-liter built-in refrigerator with a black door, digital temperature display and splash-proof IPX5 front. It operates on 12/24V using a space-saving Secop BD1.4F microprocessor-controlled compressor and offers a 0°C to +10°C range. The unit measures 557 × 384 × 240 mm and weighs 11.9 kg. |
$ 1,270.49
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1-2 weeks delivery time The Isotherm Built-In 29 Dual is a compact fridge/freezer compressor cooler designed for yachts and motorhomes. With 0.92 cu.ft. capacity, dual-mode operation (fridge or deep-freezer to -12°C), and ultra-low power consumption, it combines stainless steel inner walls with a plastic base. Powered by the Secop BD1.4F Micro or Danfoss BD35F compressor (quiet 25 dBA), the unit features low-voltage protection, removable compressor up to 1.5 m, and optional rail system. Dimensions: H 12.8" x W 13.4" x D 25.7", Weight: 18–26 lbs. |
$ 1,861.55
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1-2 weeks delivery time The Isotherm B029TNBAW17111AB Dual 29(II) is a 12/24V built-in fridge or freezer module equipped with long 400 mm stainless-steel guides for full-extension drawer access. Designed for flexible refrigeration or freezing use, it offers compact installation, smooth drawer movement and reliable temperature control for marine environments. |
$ 2,518.16
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1-2 weeks delivery time The Isotherm B029TNBAW17111AR Dual 29(II) is a 12/24V built-in fridge or freezer system supplied with a remote refrigeration unit positioned up to 2 meters away via X-couplings. It features a compact drawer construction, smooth stainless-steel slides and flexible installation for marine galley or cockpit modules. |
$ 2,570.54
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1-2 weeks delivery time Compact 29-liter built-in refrigerator/freezer with Magnum Dual seawater cooling and quick X-Couplings QND, offering high efficiency and stable performance on 12/24V systems in demanding marine environments. |
$ 3,852.33
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1-2 weeks delivery time The Isotherm B029TNBAW17411AR Dual 29(II) Magnum is a 12/24V built-in fridge or freezer system featuring a high-capacity Magnum remote refrigeration unit that can be installed up to 2 meters away using X-couplings. Its drawer-based design with stainless-steel guides offers smooth access and flexible integration into marine galley or cockpit furniture. |
$ 3,852.33
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1-2 weeks delivery time The Isotherm B029WNAAP17111A1 Dual 29(II) is a compact built-in fridge or freezer module with a custom volume of approx. 0.92 / 0.91 cu ft, designed for 12/24V DC systems. It features a new, easy-to-use integrated control panel, flexible installation options with a compressor that can be relocated up to 3 ft as standard, and a cabinet-sized design measuring 12.8 × 13.4 × 25.7 inches and weighing approx. 26 / 25 lbs (custom version). |
$ 1,665.97
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1-2 weeks delivery time The Isotherm BI 36 (B036TNACP12111AA) is a compact 36-liter top-loading built-in refrigerator, powered by the Secop BD1.4F Micro compressor. Lightweight, efficient, and customizable with a top cover, it’s an ideal choice for marine and RV installations where space and performance are critical. |
$ 1,516.48
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1-2 weeks delivery time The Isotherm BI 41 Dual (3041BA2A00000) is a versatile 41-liter built-in refrigerator/freezer designed for marine and RV use. Powered by the Secop BD Micro compressor, it combines compact dimensions, flexible installation, and dual-mode operation as either fridge or freezer. With its stainless steel interior, wire basket, and the option to mount the compressor up to 1.5m away, it offers robust cooling performance and reliability in demanding environments. |
$ 1,443.43
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1-2 weeks delivery time The Isotherm BI 41 SP is a 41-liter built-in refrigerator/freezer featuring efficient SP self-pumping seawater cooling for silent, power-saving operation, designed for 12/24V systems and ideal for compact marine installations. |
$ 2,593.24
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1-2 weeks delivery time The Isotherm BI 41 Magnum is a 41-liter built-in refrigerator/freezer equipped with a high-performance Magnum seawater cooling system and QND quick couplings, offering powerful cooling capacity for 12/24V installations on vessels operating in warm climates. |
$ 3,925.67
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1-2 weeks delivery time The Isotherm BI-172 (B172YNAAA14111AA) is a modular built-in refrigerator/freezer that can function either as a 130-liter fridge with a 38-liter freezer or as a full 172-liter refrigerator. Featuring top and side openings, air-cooled technology, and a remote-mounted Secop BD50F compressor, it is available in DC-only or AC/DC versions. Compact yet versatile, it is designed for yachts, boats, and RVs requiring large-capacity, flexible cooling solutions. |
$ 4,655.62
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1-2 weeks delivery time The Isotherm BI 40 (3040BA2A00000) is a compact 40-liter built-in refrigerator designed for boats, RVs, and off-grid applications. It features an L-shaped evaporator and a fan-cooled Secop BD35F compressor mounted remotely up to 1.5 m away, ensuring efficient cooling and flexible installation. Operating exclusively on 12/24V DC, the BI 40 offers low power consumption (~270 W/24h at 12V), durable construction, and reliable performance in demanding environments. |
$ 1,362.11
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1-2 weeks delivery time The Isotherm BI 40 (3040FA2A00000) is a 40-liter built-in refrigerator featuring an integrated cold accumulator (Kältespeicher / cold plate) for enhanced temperature stability and energy savings. Like the base model, it uses a fan-cooled Secop BD35F compressor mounted remotely up to 1.5 m away, and runs on 12/24V DC power. The cold plate function allows the unit to maintain low temperatures for longer periods, reducing compressor runtime and improving efficiency, making it ideal for marine and off-grid installations where energy management is critical. |
$ 1,309.55
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1-2 weeks delivery time The Isotherm BI 40 is a 40-liter built-in marine refrigerator featuring a side-mounted air-cooled BD35F compressor, L-shaped condenser, quick Click-On QND mounting and preinstalled couplings, offering efficient 12/24V operation with optional ASU and seawater-cooled configurations. |
$ 1,753.28
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1-2 weeks delivery time The Isotherm BI 40 Freezer is a compact 40-liter built-in marine freezer with an air-cooled BD35F compressor, efficient evaporator design, and 12/24V DC operation, offering stable low-temperature performance for integrated installations. |
$ 1,466.89
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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.
