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.

Email us: info@yacht-supply24.com or fill our Feedback form.
You can also fill out the "Ask a question" form on the right or at the bottom of the page.
|
1-2 weeks delivery time The Isotherm Safe 10 (7F10000A00000) is a compact galvanized steel marine safe with powder-coated finish, programmable digital keypad, mechanical security key, magnetic key, and bolt-through mounting, measuring 6.5 × 11.8 × 9 inches and weighing 13 lbs. |
$ 461.02
-
+
| |
|
1-2 weeks delivery time The Isotherm Safe 30 (7F30000A00000) is a large galvanized steel marine safe with corrosion-resistant powder coating, a programmable electronic keypad, mechanical key, magnetic key, and internal bolt-down mounting, sized 8.6 × 17 × 13.8 inches and weighing 27 lbs. |
$ 495.95
-
+
| |
|
1-2 weeks delivery time The Isotherm U060X020P17151AA (ISEC 2005) is a compact and energy-efficient air-cooled fridge/freezer unit with a 60 L refrigeration compartment and 20 L freezer capacity. Equipped with a flat evaporator (350 × 130 mm) and the advanced Smart Energy Control (SEC) system, it automatically adjusts compressor speed and cooling cycles for maximum energy savings. Operating on 12/24 V DC, this lightweight (~9 kg) unit is ideal for boats, RVs, and off-grid installations, providing reliable performance in marine environments where space and power efficiency are critical. |
$ 1,383.06
-
+
| |
|
1-2 weeks delivery time The Isotherm U060X020P17161AA is a compact and efficient fridge/freezer unit with a 60 L refrigeration compartment and 20 L freezer section, making it ideal for marine, RV, and off-grid applications. Equipped with a flat evaporator (350 × 130 mm) and a reliable Secop BD35F compressor, it ensures excellent cooling performance in tight spaces. Powered by 12/24 V DC with optional AC/DC kit, the system features the Intelligent Temperature Control (ITC) panel with digital modes including Eco, Over-Cool, and Battery Protection, optimizing performance and energy use. Lightweight (~9 kg) and easy to install, it offers reliable food preservation in demanding environments. |
$ 1,320.20
-
+
| |
|
1-2 weeks delivery time The Isotherm U170X056P12411AA Magnum “2511” is a seawater-cooled refrigeration unit with a BD50F compressor, medium flat evaporator (8.2 x 32 in), and capacity for a 6 cu.ft. fridge or 2 cu.ft. freezer, delivering high cooling efficiency in warm-water environments. Its integrated self-priming seawater pump and copper-nickel heat exchanger with zinc anode ensure strong thermal performance and corrosion resistance, while the mechanical thermostat provides simple and reliable temperature control for heavy-duty onboard refrigeration. |
$ 3,143.33
-
+
| |
|
1-2 weeks delivery time The Isotherm U200X066P12411AA Magnum “2512” is a seawater-cooled refrigeration system with a BD50F compressor and a large flat evaporator (7.5 × 47.5 in), supporting up to 7 cu.ft. of refrigeration or 2.3 cu.ft. of freezer volume for high-demand marine installations. An integrated self-priming seawater pump ensures high thermal efficiency in warm climates, while the copper-nickel heat exchanger with zinc anode provides long-term corrosion protection. A mechanical thermostat delivers simple and reliable temperature control, making this system ideal for vessels requiring strong cooling output and stable performance in tropical environments. |
$ 3,143.33
-
+
| |
|
1-2 weeks delivery time The Isotherm U200X066R12411AA Magnum “2505” is a seawater-cooled BD50F refrigeration system with a large oval evaporator (15 × 6 × 11 in) and evaporator door, supporting up to 7.1 cu.ft. fridge or 2.3 cu.ft. freezer volume. A mechanical thermostat provides simple control, while the seawater pump and copper-nickel heat exchanger with zinc anode deliver high cooling efficiency and durability for warm-climate marine installations. |
$ 3,783.58
-
+
| |
|
1-2 weeks delivery time The Isotherm U260X086P12411AA Magnum “2513” is a seawater-cooled refrigeration unit with a BD50F compressor and a large flat evaporator (10.6 × 39.4 in), supporting up to 9.2 cu.ft. of refrigeration or 3 cu.ft. of freezer volume, providing strong cooling output for warm-water marine installations. Its integrated self-priming seawater pump and copper-nickel heat exchanger with zinc anode deliver high thermal efficiency and corrosion resistance, while the mechanical thermostat ensures simple, reliable temperature control for vessels requiring powerful and stable onboard cooling performance. |
$ 3,143.33
-
+
| |
|
1-2 weeks delivery time The Isotherm U400X133P12411AA Magnum “2507” is a seawater-cooled refrigeration unit with a BD50F compressor and an XL flat evaporator (11.8 × 54 in), supporting up to 14.1 cu.ft. as a refrigerator or 4.7 cu.ft. as a freezer for high-capacity marine installations. An integrated self-priming seawater pump provides strong thermal efficiency in warm climates, while the copper-nickel heat exchanger with zinc anode ensures excellent corrosion resistance. A mechanical thermostat offers simple and reliable temperature regulation, making the Magnum 2507 ideal for yachts requiring maximum cooling output and stable performance under heavy thermal loads. |
$ 3,143.33
-
+
| |
|
1-2 weeks delivery time The Isotherm U000X141P13411AA Magnum “2607” is a seawater-cooled 5 cu.ft. freezer system with a BD80F compressor and an oversized 11.8 x 54 in flat evaporator, providing high cooling efficiency for warm-water marine environments. The integrated self-priming seawater pump and copper-nickel heat exchanger with zinc anode ensure strong thermal performance and corrosion resistance, while the mechanical thermostat offers simple, reliable temperature control for heavy-duty onboard refrigeration. |
$ 3,241.12
-
+
| |
|
1-2 weeks delivery time The Isotherm U150X050A17461AA Magnum ITC+ “4201” is a seawater-cooled BD50F refrigeration unit with a 3-liter holding plate (14 × 11 × 2.4 in), providing capacity for 5.3 cu.ft. fridge or 1.8 cu.ft. freezer. ITC+ control manages battery load by charging the plate at high battery levels and releasing stored cooling during low-power operation, while the seawater pump and copper-nickel heat exchanger ensure high efficiency in warm-climate marine installations. |
$ 3,866.30
-
+
| |
|
1-2 weeks delivery time The Isotherm U200X065A17461AA Magnum ITC+ “4701” is a seawater-cooled BD50F refrigeration unit with a 3.6-inch-thick holding plate (14 × 11 in), supporting up to 7 cu.ft. fridge or 2.3 cu.ft. freezer capacity. The ITC digital controller charges the plate at high battery levels and releases stored cooling to minimize power draw, while the seawater pump and copper-nickel heat exchanger ensure efficient operation in warm-water marine environments. |
$ 4,246.98
-
+
| |
|
1-2 weeks delivery time The Isotherm U060X000P11311AA SP “2055” is a self-pumping seawater-cooled BD35F refrigeration unit with a compact flat evaporator (14 × 5 in), supporting up to 2.1 cu.ft. fridge or 0.7 cu.ft. freezer capacity. Designed around a passive seawater heat-exchange system with no pumps or fans, it provides high cooling efficiency, very low power consumption, and quiet operation for 60 L marine iceboxes. |
$ 1,686.92
-
+
| |
|
1-2 weeks delivery time The Isotherm U100X000L11311AA SP “2057” is a self-pumping seawater-cooled BD35F refrigeration system with a compact L-shaped evaporator (10 × 4 × 14 in), providing 3.5 cu.ft. fridge or 1.2 cu.ft. freezer performance for 100 L iceboxes. Its passive seawater heat exchanger requires no pumps or fans, ensuring high efficiency, low noise, and minimal battery consumption. |
$ 1,686.92
-
+
| |
|
1-2 weeks delivery time The Isotherm U125X000L11311AA SP “2050” is a self-pumping seawater-cooled BD35F refrigeration system with a large L-shaped evaporator (16 × 7 × 8 in), supporting 4.4 cu.ft. fridge or 1.5 cu.ft. freezer capacity for 125 L marine iceboxes. Its passive seawater condenser provides high cooling efficiency, silent operation, and low battery consumption without pumps or fans. |
$ 1,686.92
-
+
| |
|
Isotherm U125X000R11311AA – SP 2051 Water-Cooled Refrigeration Unit, Small O-Evaporator 9" × 3" × 8"
1-2 weeks delivery time The Isotherm U125X000R11311AA SP “2051” is a seawater-cooled BD35F refrigeration unit with a compact O-shaped evaporator (9 × 3 × 8 in), suitable for 4.4 cu.ft. fridge or 1.5 cu.ft. freezer volumes up to 125 L. Its self-pumping SP system ensures high cooling efficiency, silent operation and low power draw without pumps or fans, while the click-on bracket and lid simplify installation. |
$ 1,686.92
-
+
| |
|
1-2 weeks delivery time The Isotherm U150X000R11311AA SP “2351” is a seawater-cooled BD35F refrigeration unit with a Medium O-evaporator (13 × 4 × 9 in), supporting up to 150 L fridge or 50 L freezer volume. Its SP self-pumping seawater system ensures high cooling efficiency with silent, low-power operation, while the click-on bracket and lid allow quick installation. |
$ 1,739.31
-
+
| |
|
Isotherm U170X056P12311AA – SP 2553 Water-Cooled Refrigeration Unit, Medium Flat Evaporator 32" × 8"
1-2 weeks delivery time The Isotherm U170X056P12311AA SP “2553” is a seawater-cooled refrigeration unit with a Medium flat evaporator (32 × 8 in) and BD50F compressor, suitable for boxes up to 170 L refrigeration / 56 L freezing. The SP self-pumping system ensures high cooling efficiency, silent operation and reduced power consumption. |
$ 2,008.24
-
+
| |
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 |
|---|---|---|---|
| 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.
