Chest or upright freezer: which one is really worth it
A chest freezer uses less than an upright only because it is bigger: at equal volume the two formats are equivalent, 87.8 against 89.8 kWh per 100 litres between 200 and 300 litres. We split 9,588 freezers from the European registry by shape and found that the real difference is measured in square metres of floor, in defrosting and in energy class.
In this guide (7)
The chest freezer has a precise reputation: it holds more and uses less. The second half of that sentence has been going around for twenty years and it does not survive the numbers. The first half does, but at a price paid in square metres of floor.
We at PortosEunostos downloaded the European EPREL registry on 29 October 2026, 56,567 records, and isolated the 9,588 real freezers, meaning the machines with frozen compartments only. Split by shape: 2,306 chest and 7,282 upright. From here on these are figures declared by the suppliers, not impressions.
Does a chest freezer use less? Only because it is bigger
Across the whole registry the chest does look more frugal: 83.0 kWh a year per 100 litres against 121.1 kWh for the upright. Then you look at volume and the trick shows up: the median chest declares 290 litres, the median upright 168. A large appliance loses less in proportion to what it holds, always, whatever its shape. The honest comparison is made at equal volume, and there the advantage evaporates.
100 to 200 litres: 103.7 against 127.9 kWh per 100 litres, the chest wins by 19.0%.
200 to 300 litres: 87.8 against 89.8, a 2.2% gap.
300 to 400 litres: 75.2 against 73.2, and here the upright wins.
Above 400 litres: 65.8 against 64.0, again in favour of the upright.
In three bands out of four the two formats are equivalent, and at the top of the scale they are almost perfectly equivalent: the most efficient chest freezer in the registry above 300 litres declares 95 kWh a year for 300 litres, that is 31.7 kWh per 100 litres in class A, and the best upright in the same band, a 359 litre Liebherr, declares 114 kWh, that is 31.8. Same class, same efficiency index, same consumption per litre. Shape has nothing to do with it. To read class and index without being misled, the scale is rebuilt in how to read the energy label.
How much floor every litre costs
This is where the real difference sits, and nobody writes it on a spec sheet because it has to be calculated: width by depth, and litres divided by the area taken up. In the 300 to 400 litre band, where the two formats actually meet:
Chest: a median 354 litres on 0.911 square metres of floor, that is 393 litres per square metre.
Upright: a median 333 litres on 0.396 square metres, that is 831 litres per square metre.
At equal capacity the chest takes more than twice the floor space. In exchange it stays low: median height 850 millimetres, with 94.7% below 900, while the median upright reaches 1,420 and climbs to 1,860 in the large band. Translated: the chest wants free surface in a garage, a basement or a utility room and leaves you the top; the upright wants half a metre of wall and goes up.
The built-in figure follows from this: built-in chest freezers in the registry are 22 out of 2,306, or 0.95%, uprights 830, or 11.40%. If the freezer has to fit a kitchen column, the choice is already made and it is not a chest.
No Frost barely exists on chest freezers
This is the number that changes daily life more than consumption does. Among chest freezers with a four star compartment, those with automatic defrosting are 82 out of 2,225, or 3.69%. Among uprights they are 2,702 out of 7,164, or 37.72%.
In practice, whoever buys a chest buys manual defrosting: empty it, unplug it, wait, dry it, load it back, once or twice a year. Method and frequency are in how often to defrost and clean the refrigerator. It is not a hidden flaw, it is a design choice, and it is also one of the reasons the chest copes better with cold rooms: 72.3% declare they can work down to 10 degrees ambient, against 64.2% of uprights.
On freezing capacity the difference is apparent again. In absolute terms the chest declares 14.5 kg in 24 hours against 7.8 for the upright, but related to volume you get 4.85 kg per 100 litres against 4.87. Identical, and very close to the legal minimum: 3.5 kg per 100 litres taken from 25 degrees to 18 below zero in no more than 18.5 hours.
Why the label never tells you which format you are looking at
The reason we had to measure width and height is simple: the format is not a declared figure. Regulation (EU) 2019/2016 defines the chest freezer only in its professional version, and otherwise speaks of a "freezer" as an appliance with four star compartments only, without distinguishing top opening from front opening.
The consequence weighs on the energy class. In the calculation of the reference consumption, Annex IV provides compensation factors for defrosting (1.00 if manual, 1.10 if automatic), for built-in installation (1.05) and for the number of doors. For shape, no coefficient at all. So No Frost is granted ten percentage points of extra consumption from the start and the chest, manual in 96% of cases, does not get them: that is why chest freezers in class F are 39.9% against 26.5% of uprights, while using the same energy per litre. It is the same mechanism described in why almost every fridge is class E.
When a chest makes sense and when an upright does
A chest makes sense if you have an unlived-in space to give it, if you genuinely need more than 300 litres (42.5% of chests go beyond that, against 10.1% of uprights), if you freeze harvests, stockpiles or meat in large batches a few times a year and you accept manual defrosting.
An upright makes sense in every other case: space inside the home, several openings a day, wanting to see what is there without digging, a column to fill or a fridge to stand beside, No Frost. On noise nothing significant changes, a median 41 dB against 40, and the declared guarantee is 24 months for both.
The market, meanwhile, has already chosen. In the OpportunityCommerce catalogue the 157 entries in the Freezers category contain 85 actual freezers and no chest model, and on the Bosch site the two formats listed in Italy are freestanding single door and built-in single door. Neither of them is a chest.
PortosEunostos tips
What to check on the product. Measure the floor, not the wall: that is where the chest wins or loses. Then, in order: four stars and not three, freezing capacity in kilos per 24 hours set against how much you actually load at once, defrosting type written in black and white, minimum ambient temperature if the room is cold, door open alarm. Look at the energy class last and together with the annual kWh, because on its own it says less than it seems; to turn kilowatt hours into euros the arithmetic is in how much a refrigerator consumes in a year.
How to judge the seller. Ask whether delivery is to the floor: a 400 litre chest is heavy and does not fit through every door. Check that the listing carries the exact model code and not the family, because one letter changes volume and defrosting. On price, SniffaPrezzi puts the offers side by side, while sheets and availability of the uprights sit in the OpportunityCommerce Freezers category: the Liebherr FNc 7227, for instance, declares 363 litres, class C, 178 kWh a year and automatic defrosting, at 1,481.31 euro recorded on 29 October 2026.
The right question is not which format uses less energy, because at equal litres the answer is neither. It is where you put it and how many times a year you are willing to empty it. Once that is settled, temperature and storage times are the same for both, and they are set out in freezer temperature and how long food lasts.
Sources
European EPREL registry, refrigerating appliances group: 56,567 records downloaded on 29 October 2026, 53,692 unique by brand and model, 9,588 freezers with frozen compartments only and declared dimensions. The split between chest and upright is ours and is based on comparing width with height, because the format is not a field of the registry.
Regulation (EU) 2019/2016: Article 2 for the definitions of freezer and professional chest freezer, Annex IV point 1 for specific freezing capacity, tables 4 and 5 for the modelling parameters and the compensation factors used in the standard annual energy consumption.
Official Bosch site and freezers section, for the formats actually listed in Italy.
OpportunityCommerce catalogue and prices recorded on 29 October 2026: 157 entries in the Freezers category, 85 freezers net of accessories, frames and panels, no chest model.
