Mestic Coolbox MCC-18 AC/DC image 1 Mestic Coolbox MCC-18 AC/DC image 2 Mestic Coolbox MCC-18 AC/DC image 3 Mestic Coolbox MCC-18 AC/DC image 4 Mestic Coolbox MCC-18 AC/DC image 5 Mestic Coolbox MCC-18 AC/DC image 6 Mestic Coolbox MCC-18 AC/DC image 7 Mestic Coolbox MCC-18 AC/DC image 8

Mestic Coolbox MCC-18 AC/DC

£214.99(inc VAT) £259.99
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  Product Description
The Mestic MCC-18 is a compressor coolbox that genuinely freezes and cools between -18°C and +10°C, regardless of outside temperature. Unlike thermoelectric coolboxes that struggle in hot weather, this uses proper compressor technology - the same principle as your fridge at home. You can run it from your car's 12v or 24v socket using the included lead, or plug it into mains power with the 230v adaptor (also included). The 18-litre capacity holds 0.5-litre bottles upright and splits into two compartments, so you can keep milk separate from meat or drinks away from food.

Control happens through the touch LCD display on top, where you set your exact temperature, or via the Mestic smartphone app over Bluetooth or WiFi. The app lets you switch it on before you reach the vehicle, adjust settings from your awning, and monitor power consumption. There's a USB port built in for charging phones or tablets - useful when you're off-grid. Interior lighting means you're not fumbling around in the dark, and the recessed handles make it manageable to shift around despite weighing 11.9kg.

The main limitation is weight and size - at nearly 12kg empty and 61.5cm long, it needs dedicated floor space in your motorhome, caravan boot, or car. It's not a coolbox you'll carry to the beach. The compressor does make a faint hum when cycling (like any fridge), though it's quieter than older models. You're looking at something for longer trips where proper refrigeration matters - keeping insulin cold, freezing ice packs, storing fresh fish, or maintaining food safety in genuine heat. The eco mode reduces power draw when you're on hookup, and the two-year warranty covers the compressor unit itself.

SpecificationsColour: Black/Grey
  • Material: Aluminium
  • Capacity: 18Lt
  • Cooling and freezing from: -18°C to +10°C (AC/DC)
  • Digital display with USB connection
  • Easy operation via touch LCD display and Mestic smart App
  • Suitable for 0.5Lt bottles
  • Freezing function: Yes
  • Includes 230v adaptor
  • Weight: 11.9Kg
  • Dimensions (HxWxD): 28.9 x 61.5 x 33.5cm
  • Warranty: 2 years

Frequently Asked Questions

What's the difference between the Mestic MCC-18 compressor coolbox and a thermoelectric coolbox?
The MCC-18 uses compressor technology that actively refrigerates contents to a set temperature between -18°C and +10°C, regardless of outside temperature. Thermoelectric coolboxes only cool 15-20°C below ambient temperature, so they struggle in hot weather and cannot freeze. The compressor system works like a domestic fridge with refrigerant gas, whereas thermoelectric models use a Peltier element. This means the Mestic can maintain frozen food in 35°C heat, while a thermoelectric model would fail.
Can the Mestic MCC-18 run directly from a leisure battery in a motorhome or caravan?
Yes, the MCC-18 connects to 12v leisure battery systems using the included DC lead. It draws approximately 45 watts when the compressor is running and cycles on and off to maintain temperature. On a 100Ah leisure battery you can expect roughly 20-24 hours of runtime before the battery reaches 50 percent discharge, though this varies with ambient temperature and how often you open the lid. The eco mode reduces power consumption when connected to mains hookup by adjusting compressor cycling.
Does the Mestic app work without mobile signal or WiFi connection?
The Mestic smartphone app connects to the MCC-18 via Bluetooth, which works independently of mobile signal or internet connection. Bluetooth range is approximately 10 metres with clear line of sight, so you can control the coolbox from inside your caravan or motorhome while it sits in a locker or vehicle. The coolbox also has built-in WiFi capability that creates its own network, extending control range when you're on site without relying on campsite WiFi or mobile data.
How long does it take the Mestic MCC-18 to freeze items from room temperature?
Freezing time depends on ambient temperature, starting temperature of contents, and how full the coolbox is. In typical conditions with an ambient temperature around 20°C, the MCC-18 takes approximately 2-3 hours to pull the internal temperature down from room temperature to 0°C, and another 2-3 hours to reach -18°C when set to maximum. Pre-chilled items freeze faster. The compressor works harder in hot weather, so expect longer times if starting in a 30°C car boot.
Will the Mestic MCC-18 drain my car battery if left running with the engine off?
Yes, running any 12v coolbox from a car's starter battery with the engine off will eventually flatten the battery. The MCC-18 has a low voltage cut-off protection that disconnects power when battery voltage drops to protect the battery from complete discharge. Most car starter batteries provide 2-4 hours of runtime before reaching the cut-off point. For longer periods, connect to a separate leisure battery system or run the engine periodically, or switch to mains power using the 230v adaptor when parked on hookup.
What size bottles and cans fit in the Mestic MCC-18 dual compartments?
The MCC-18 is specified for 0.5 litre bottles standing upright in the main compartment, which also accommodates standard 330ml and 440ml drinks cans. The internal height of 24cm means 1 litre bottles need to lay flat. The two-compartment layout has one larger section and one smaller section divided by a removable basket, letting you separate frozen items from chilled goods or keep raw meat away from ready-to-eat food. Total usable capacity across both compartments is 18 litres.
Does the Mestic MCC-18 need to be level to work properly like an absorption fridge?
No, compressor coolboxes work at any angle because the refrigerant system uses a mechanical pump rather than gravity and heat exchange like absorption fridges. The MCC-18 functions normally tilted or on slopes, making it suitable for vehicles on uneven pitches or during transit. The only consideration is ensuring the lid stays shut during travel, as the latch needs to be properly engaged. This is a key advantage over three-way absorption fridges that require leveling within a few degrees to operate efficiently.
Is the 230v mains adaptor for the Mestic MCC-18 available separately if lost or damaged?
Yes, the 230v AC mains adaptor is sold as a separate spare part for the Mestic MCC series compressor coolboxes. The adaptor is the same unit included with the coolbox and converts household mains voltage to the DC voltage the compressor requires. Keeping a spare adaptor means you can leave one permanently connected at home and another in your caravan or motorhome. The adaptor has a standard three-pin UK plug and approximately 2 metres of cable.
EAN-13 : 8712757488117
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If you’ve changed your mind about keeping your purchase, please return it in its original condition with proof of purchase and we’ll exchange or refund it. Unless faulty, this should be within 100 days of receiving your order. By original condition, we’d expect this to mean that you’ve kept packaging and labels, and that the item is undamaged and unused.

For further information of how to return your item, please visit the "Returning an Unwanted/Faulty/Damaged Item" section on our Help Page.
  Did you know we have been established and have been in the caravan and motorhome industry for over 50 years?

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