The purchase price is only part of the cost – over several years of use it is energy that decides what your refrigeration really costs. We explain what drives a monobloc's electricity consumption and how to calculate it before you buy.
What does energy consumption depend on?
A monobloc's consumption is not fixed – it depends on several factors worth knowing when selecting a unit:
- the volume and insulation of the room – the larger and less well insulated, the more energy,
- the temperature range – freezing (LT) uses noticeably more than chilling (MT),
- the ambient temperature – in hot weather the system works harder,
- how often the door is opened and the heat load of the goods,
- the class of components – EC fans and inverter compressors cut consumption significantly.
How do I estimate the annual cost?
A simplified calculation: the unit's average power draw (kW) × the estimated compressor run time per day (h) × 365 days × the price of electricity per kWh. The compressor does not run non-stop – it cycles, so what matters is the actual run time, not the peak power.
That is why two units of similar capacity can produce different bills – what decides is efficiency and how long they have to run to hold the temperature. A well-sized monobloc with some capacity in reserve runs for less time and, as a result, uses less.
How to genuinely lower the bills
The biggest savings come from: sizing the capacity correctly for the room, energy-efficient components (EC fans, inverter), good insulation and well-sealed doors, and – in buildings with many units – heat recovery via the Waterloop system.
Frequently asked questions
Does a more powerful monobloc use more electricity?
Not necessarily. A unit with capacity in reserve reaches temperature faster and runs for less time, which can be more economical than a weaker unit running constantly. What counts is matching the unit to the room, not raw capacity.
How much does a freezer monobloc use compared with a chiller?
Freezing (LT) means holding a much lower temperature, so it uses noticeably more energy than chilling (MT) – for the same room the difference can be substantial.
Is an inverter compressor worth it?
In most applications yes – it matches output smoothly to demand, reduces on/off cycling and lowers both energy use and noise. We will help you assess the payback in your case.
We will calculate the consumption for your cold room.
Find your monobloc
