Pro account Request a quote
Negative technology · −18 / −25 °C

Walk-in freezer rooms for long-term frozen storage

A temperature range of −18 / −25 °C, down to −30 °C on high-capacity options. Built for long-term frozen storage: meat, fish, dressed game, ready meals, ice cream and frozen goods. Delivered empty with on-site charging by a certified F-Gas engineer (R290 or R744 depending on volume).

−18 / −25 °C Empty + engineer charge R744 CO₂ available
Walk-in freezer room · −22 °C

A walk-in freezer drops below 0 °C to freeze for the long term. Standard range: −18 °C for long-term storage of frozen goods (the food-safety norm). Strong range: −25 °C for rapid freezing of products brought in fresh. Extreme range: −30 °C for premium ice cream or laboratories. A freezer room consumes 2 to 2.5 times more than a chiller of the same volume — that is the price of performance.

Why freezer rooms are delivered empty

A walk-in freezer needs a refrigerant charge 2 to 3 times larger than a chiller of the same volume to reach those low temperatures. That charge exceeds the R290 ATEX threshold in an enclosed space from around 15-20 m³. The solution: systematic empty delivery, then on-site charging by a certified F-Gas (Cat. I) engineer following the ATEX procedure (zoning, transient forced ventilation, leak detector). R744 (transcritical CO₂) is an alternative above 30 m³ — heavier to install but free of ATEX constraints.

R290 vs R744 on a freezer — the technical call

R290 freezer up to 30 m³: fine, charge around 2.5-3.5 kg. R290 freezer above 30 m³: forced ventilation of the room becomes mandatory (a thermal loop managed by the engineer). R744 transcritical: no ATEX constraint at all (GWP = 1, non-flammable), but high pressure (110 bar on the HP side) and a more expensive dedicated unit (+20-30% on investment). For an industrial freezer above 40 m³, R744 is usually the right choice: no room-conversion cost plus long-term compliance.

Reinforced floors and materials

A freezer room imposes demands on materials. The floor must resist frost: reinforced aluminium T-floor (800 kg/m² load) with 120 mm PIR sub-insulation. No bare concrete floor (freeze-thaw cracks it). Walls and ceiling in 120 mm panels minimum (vs 100 mm on a chiller). The door has an embedded heating element to stop the seal frosting up. All of this is standard on our freezer models.

Technical specs

What you get

Temperature range −18 / −25 °C standard · −30 °C optional
Refrigerant R290 delivered empty ≤ 30 m³ · R744 (CO₂) above
Gas charging Certified F-Gas (Cat. I) engineer, quoted separately
Insulation 120 mm PIR panels (walls) · 120 mm (floor) · 150 mm (ceiling)
Floor Reinforced aluminium T-floor, 120 mm sub-insulation
Door Sliding or hinged with 230 V heated seal
Defrost Programmable electric, adjustable frequency (6-12 h)
Typical use, 20 m³ 450-550 kWh/month
By volume

Models in this range

10m3 Cold Room — Compact, Movable R290 Unit
Compact format · 10 m³

10m3 Cold Room — Compact, Movable R290 Unit

The 10 m³ (roughly 350 cu ft) is our entry point: the most compact small cold room that still works as a genuine professional unit. It arrives pre-charged with R290, runs on a standard 230 V single-phase supply, and can be sited almost anywhere without a heavy concrete slab. A best-seller for game-hunting groups, small butchers, florists and restaurants on temporary premises.

From 5,800 € ex VAT

View details
20m3 Cold Room — The R290 Core of the Range
Core of the range · 20 m³

20m3 Cold Room — The R290 Core of the Range

The 20 m³ (roughly 700 cu ft) is our best-seller. It has the capacity for a wholesale butcher, an active hunting syndicate, a mid-sized restaurant or a market garden handling post-harvest stock. Pre-charged with R290, 100 mm PIR insulation, 400 V three-phase. This is the format where the cost per m³ is at its best.

From 8,200 € ex VAT

View details
30m3 Cold Room — The Limit of R290 Pre-Charge
R290 pre-charge limit · 30 m³

30m3 Cold Room — The Limit of R290 Pre-Charge

30 m³ (roughly 1,060 cu ft) is the boundary of our pre-charged R290 catalogue. It is the format for farms handling post-harvest stock, caterers with large seasonal volumes, wholesale butchers and shared hunting estates. Above this point we switch to empty delivery, with the unit charged on site by a certified F-Gas engineer.

From 11,500 € ex VAT

View details
40m3 Cold Room — Industrial Reefer, Delivered Empty
Industrial reefer · 40 m³

40m3 Cold Room — Industrial Reefer, Delivered Empty

40 m³ of usable space (roughly 1,410 cu ft) on an ISO 40-foot frame. Aimed at food manufacturers, large producers and logistics platforms. Always delivered empty, then charged on site by a certified, Category I F-Gas engineer (R290 or R744, depending on the specification).

From 17,800 € ex VAT

View details
By industry

Configured for your trade

Cold rooms for hunting and game Cold rooms for butchery and charcuterie Cold rooms for the fishmonger Cold rooms for restaurants, caterers and institutional kitchens

Questions fréquentes

How long does a walk-in freezer take to reach −20 °C after start-up?

An empty 20 m³ freezer takes 6 to 10 hours to drop from +25 °C to −20 °C. With product inside (the real-world case after loading), allow 12 to 24 hours. Our advice: pre-cool the empty room for 12 h before loading, then load in batches of no more than 30% so you do not overwhelm the unit. For rapid freezing (game, warm meat), fit a dedicated blast chiller — that is separate equipment.

Can a freezer room also run as a chiller if I raise the set-point?

Technically yes, but it is sub-optimal. A freezer's refrigeration unit is oversized for chiller duty (it consumes more and the short cycle is ill-suited), and the 120 mm insulation plus heated door are wasted above zero. If you anticipate both uses, choose a dual-temperature cold room (two zones with a removable insulated partition) — it is designed for exactly that.

How much does the engineer's gas-charging service cost?

Quoted separately by the partner engineer and paid directly to them. Range: from around €1,200 + VAT for R290 charging of a 20 m³ freezer on an accessible site, up to €3,500 + VAT for transcritical R744 on a 60 m³ unit with ATEX room conversion. Included: call-out, vacuum pull-down, controlled charge, commissioning, leak test, 1 h user training and an F-Gas intervention certificate. Excludes any room-ventilation works if required.

What size walk-in freezers do you offer, and where do you deliver?

From 10 m³ up to 40 m³ as standard, plus bespoke configurations. Prices run from around €8,400 + VAT to €38,000 + VAT ex VAT, depending on volume, refrigerant and unit power. We deliver to France, Germany, Italy and Spain, by crane lorry (HIAB), with a detailed quote within 48 working hours.

Do I need a concrete slab for a walk-in freezer?

Yes. A freezer room must sit on a level reinforced concrete slab — typically 15 cm for a 20 m³ unit, 18 cm for dense storage at 30 m³ and above. The aluminium T-floor with 120 mm sub-insulation prevents frost reaching the slab and keeps the structure stable. We supply the foundation drawings with your quote.

Un projet précis ? Devis sous 48 h.

Indiquez votre usage, votre volume cible et votre adresse de livraison. Notre équipe technique répond avec une fiche dimensionnée et un prix HT clair, dans les 2 jours ouvrés.

Demander un devis Voir le catalogue →