March 20, 2026 The My Mestic Team

Cool Box for Campervan Under £150: What You Get

Cool Box for Campervan Under £150: What You Get is a practical question for anyone deciding between cool box options. Understanding the real costs helps you choose a unit that fits both your needs and your budget without unpleasant surprises.

Purchase Price Breakdown

The Mestic cool box range spans from budget thermoelectric models to full-featured compressor units:

MTEC-25 (25L thermoelectric): £74.99 — cools 20°C below ambient, lightweight at 4kg
MTEC-28 (28L thermoelectric): £78.99 — slightly larger capacity, same cooling performance
MCC-18 (18L compressor): £221.99 — freezes to -18°C, LCD display, Mestic App control
MCC-25 (25L compressor): £232.99 — mid-size with full compressor performance
MCC-35 (35L compressor): £248.99 — largest capacity with all features

Running Cost Comparison

Thermoelectric cool boxes draw a steady 3-5 amps at 12V whenever powered on. They have no compressor to cycle, so the draw is constant. Over 24 hours at 4 amps, that is 96Ah — enough to flatten a 100Ah battery in a single day. On hook-up this is fine, but on battery power they are surprisingly hungry.

Compressor cool boxes draw 3-5 amps only when the compressor is active, which is typically 30-50% of the time depending on ambient temperature and how often you open the lid. A Mestic MCC-25 might consume 30-40Ah over 24 hours in moderate conditions, making it more efficient than a thermoelectric box despite the higher purchase price.

Value Over Time

A compressor cool box lasts significantly longer than a thermoelectric model. Compressor units from reputable brands routinely deliver 10-15 years of service. Thermoelectric Peltier elements can fail after 3-5 years of regular use. Factoring in replacement costs, a compressor box often costs less over a decade of camping.

The ability to freeze also saves money on ice purchases and reduces food waste by keeping perishables at proper food-safe temperatures for longer. On a two-week European holiday, the food savings alone can be significant.

Final Thoughts

Budget thermoelectric boxes are a fine starting point for occasional UK camping. For regular use, especially in warm conditions, a compressor cool box delivers better value over time.

Whatever cool box you choose, remember that good habits make as much difference as good hardware. Pre-cool your box before loading it, chill food and drinks in a domestic fridge first, minimise lid openings, and keep the box out of direct sunlight. A well-managed thermoelectric box can outperform a poorly managed compressor model in practice. The Mestic range gives you the tools for reliable food storage on the road, but how you use them determines the results you get.