Compact Classic Large Capacity Kitset Fridge ≤ 425L OR Freezer ≤ 180L
Isotherm Large Capacity Kitset (12/24V DC Air-Cooled)
Engineered to convert any large, well-insulated compartment into a high-efficiency refrigerator or deep freezer, this heavy-duty system brings residential-grade cooling performance right to your adventures.
Operating on versatile 12/24 Volt DC power, it gives you the absolute freedom to preserve fresh food and frozen goods for extended trips without excessive battery drain.
At the heart of this high-performance kit is the powerful Secop BD80 Air-Cooled Compressor. Recognized across the industry for its rugged reliability and exceptional efficiency under heavy thermal loads, the BD80 is paired with an expansive Large-Flat Evaporator plate. The flat design maximises cold air distribution across large volumes and can be seamlessly installed along the interior wall of your cooling box.
Designed as a complete, user-friendly package, the kit comes pre-charged and includes everything required for a professional-grade DIY installation. With integrated mounting spacers, specialized screws, and a dedicated mechanical thermostat control, setting up your custom large-scale fridge or freezer has never been more straightforward.
Features:
Massive Volume Capacity: Unmatched performance that effortlessly handles larger compartments—cooling up to 425 liters for refrigerators or freezing up to 180 liters.
Premium Secop BD80 Compressor: Features a heavy-duty, highly efficient air-cooled compressor engineered to maintain stable temperatures even in harsh marine or tropical conditions.
Ultra-Slim Flat Evaporator: The large flat cold plate delivers uniform, rapid cooling throughout the entire box without taking up valuable storage space.
DIY-Friendly Design: Complete installation kit supplied with mounting spacers, screws, and a pre-wired thermostat control box for easy, hassle-free integration.
Off-Grid Optimised (12/24V DC): Connects directly to your deep-cycle battery systems, ideal for boats, campers, caravans, and remote cabins.
Precise Temperature Management: Includes a heavy-duty mechanical thermostat knob allowing you to fine-tune your settings from standard refrigeration down to deep-freeze levels.
Specifications:
Power Input: 12 / 24 Volt DC
Compressor Model: Secop BD80 (Air-Cooled with Fan Condenser)
Evaporator Type: Large-Flat Cold Plate
Max. Box Volume (Refrigerator): Up to 425 Litres
Max. Box Volume (Freezer): Up to 180 Litres
Evaporator Dimensions (mm): 1370H x 300W
Compressor Dimensions (mm): 390L x 200W x 200H
Kit Contents: Thermostat Control, Mounting Spacers & Screws, Large Flat Evaporator Plate, Secop BD80 Compressor Base Assembly
Installation Pro-Tips:
Ventilation: To achieve maximum cooling efficiency and the lowest power consumption, ensure the compressor compartment is well-ventilated, allowing cool air to cycle from below and warm air to escape freely from the top.
Insulation: For optimal performance (especially when configured as a freezer), a minimum of 50mm–100mm of high-quality polyurethane insulation is highly recommended for the cooling compartment.
| Fridge capacity | Max 425L |
|---|---|
| Freezer capacity | Max 180L |
| Input voltage options | 12/24V |
FREIGHT / SHIPPING FEE*
The freight cost is displayed in both the Cart and Checkout.
* We reserve the right to revise the freight charge on some bulky items (for example, a large fridge travelling to Te Anau). In this case, we will contact before processing the order and still endeavour to offer a subsidised freight cost. If the delivery address is outside the North and South Islands (e.g. Waiheke, Great Barrier, Stewart Islands), please contact us for a freight quote.
WE ONLY SEND ORDERS WITHIN NEW ZEALAND. If the delivery address is outside the North or South Islands (e.g. Waiheke, Great Barrier, Stewart Islands), please contact us for a freight quote. Our automated online freight pricing only applies to North & South Island locations.
DELIVERY TIMES
The below estimates are general guidelines and may be extended by factors outside our control.
North Island (2-4 working days)
North Island Rural (3-5 working days)
South Island (2-5 working days)
South Island Rural (3-6 working days)


