Cold storage is the backbone of every food supply chain — from frozen french fries leaving the factory to fresh strawberries arriving at a supermarket shelf. Yet cold storage warehouses operate under fundamentally different rules than ambient warehouses, and the specifications that matter most are ones many tenants overlook until they're already locked into a lease.
This guide covers the two main temperature regimes, the technical specs that drive operating costs, and what to evaluate before signing a cold storage lease in Latvia.
Two Temperature Regimes, Two Different Worlds
Cold storage broadly splits into two categories, each with distinct infrastructure, energy costs, and operational requirements.
Frozen Storage (–18 °C to –25 °C)
The standard frozen regime operates at –18 °C — the internationally accepted temperature for long-term preservation of frozen goods. Some products require even colder conditions: ice cream, for instance, is typically stored at –22 °C to –25 °C to maintain texture and prevent ice crystal formation.
Frozen warehouses are the most capital-intensive cold storage type. The insulation panels are thicker (typically 150–200 mm polyurethane), the refrigeration plant is larger, and the energy consumption is substantially higher. Floor heating systems are mandatory to prevent ground frost heave — without them, the sub-zero temperatures would freeze the soil beneath the slab, causing it to expand and crack the floor.
Typical products stored at –18 °C to –25 °C: frozen foods, ice cream, seafood, meat, ready meals, frozen dough, pharmaceutical products requiring deep freeze.
Chilled Storage (+2 °C to +8 °C)
The chilled regime maintains temperatures between +2 °C and +8 °C, with the most common setpoint being +4 °C to +6 °C for fresh produce and dairy. This range slows bacterial growth without freezing the product, preserving texture and nutritional value.
Chilled warehouses are less expensive to build and operate than frozen facilities, but they present a different challenge: product turnover is fast and dock activity is high. Fresh goods have short shelf lives, so chilled warehouses need efficient loading infrastructure — rapid-cycling dock doors, dock seals to maintain the cold chain during loading, and often dedicated temperature-controlled staging areas.
Typical products stored at +2 °C to +8 °C: dairy, fresh fruits and vegetables, flowers, beverages, pharmaceuticals, fresh meat and fish.
Key Technical Specifications for Cold Storage
Beyond temperature, several specifications separate a well-designed cold storage facility from one that will drain your operating budget.
Insulation and Envelope
| Parameter | Frozen (–18 °C to –25 °C) | Chilled (+2 °C to +8 °C) |
|---|---|---|
| Panel thickness | 150–200 mm PUR/PIR | 80–120 mm PUR/PIR |
| Floor insulation | Required + floor heating | Required, no floor heating |
| Vapor barrier | Critical (both sides) | Standard |
| Air locks / strip curtains | Mandatory at every transition | Recommended |
The insulation panel thickness directly affects energy costs. Underspecified insulation might save on construction, but the refrigeration plant works harder year-round to compensate — a cost that compounds over a 5–10 year lease.
Refrigeration Systems
Modern cold storage facilities in Latvia typically use ammonia (NH₃) or CO₂-based refrigeration systems. Ammonia is highly efficient and has zero global warming potential, but requires safety infrastructure (detection systems, ventilation, emergency protocols). Smaller facilities may use HFC-based systems, though these face increasing regulatory pressure under EU F-gas regulations.
For tenants, the key question isn't which refrigerant the landlord uses — it's who pays for the energy. Refrigeration is the single largest operating cost in cold storage, often accounting for 50–70% of total energy consumption. Clarify whether electricity for refrigeration is included in the service charge or billed separately, and whether you pay for shared plant capacity or your own metered zone.
Loading Infrastructure
Cold chain integrity breaks at the dock. Every time a door opens, warm air infiltrates and the refrigeration system works overtime to recover. In a well-designed cold storage warehouse, look for:
- Dock shelters or dock seals — inflatable seals that close the gap between the truck and the building, minimizing thermal bridging
- Rapid-cycling doors — high-speed doors between temperature zones that limit air exchange
- Temperature-controlled staging areas — buffer zones at +10 °C to +12 °C between the dock and the main storage area, reducing thermal shock
- Ante-chambers — particularly important for frozen facilities, where the temperature differential between outside air and storage can exceed 40 °C in summer
Floor Load Capacity
Cold storage floors take a beating. Racking systems in frozen warehouses are often taller (to maximize expensive cooled volume), which means heavier point loads on the slab. Standard ambient warehouse floors rated at 5 t/m² may not be sufficient for high-bay cold storage racking. Verify the floor load specification — and check whether the floor heating system (in frozen facilities) has been designed to handle the planned load.
Ceiling Height and Storage Density
In cold storage, every cubic meter of cooled volume costs money to maintain. This makes ceiling height and storage density even more critical than in ambient warehouses. A frozen warehouse with 12 m clear height can accommodate 5–6 racking levels, while 8 m limits you to 3–4 levels — yet the refrigeration cost per square meter doesn't drop proportionally with lower ceilings. The result: cost-per-pallet-position is significantly lower in taller cold storage buildings.
Multi-Temperature Facilities
Many modern logistics parks in Latvia offer multi-temperature warehouses — a single building with separate zones for frozen, chilled, and ambient storage. These are particularly attractive for food distributors and 3PL operators who handle diverse product ranges.
The advantage is operational: one receiving dock, one inventory system, one location. The risk is shared infrastructure — if the refrigeration plant serving multiple zones has a single point of failure, all zones are affected. Ask about redundancy: backup compressors, dual power feeds, and generator capacity.
What to Check Before Signing a Cold Storage Lease
Cold storage leases in Latvia carry considerations that don't exist in ambient warehouse agreements. Before committing:
- Energy cost structure — Is refrigeration energy included in rent, in OPEX, or billed separately? What's the historical consumption per m² or per pallet position?
- Temperature guarantee — Does the lease specify the temperature range the landlord must maintain? What happens if there's a deviation?
- Backup power — Is there a diesel generator? How many hours of autonomy does it provide? In frozen storage, a 24-hour power outage without backup can mean total product loss.
- Maintenance responsibility — Who maintains the refrigeration plant? Who pays for compressor replacement?
- Insurance requirements — Cold storage goods insurance can be significantly more expensive. Some landlords require specific coverage levels.
- Expansion flexibility — Can you add temperature zones or convert between chilled and frozen if your product mix changes?
Use the lease calculator on Rentful to model your total occupancy cost including energy, OPEX, and fit-out amortization — the headline rent in cold storage can be misleading without accounting for the full cost stack.
*Explore cold storage and warehouse options across Latvia at rentful.eu — compare properties side-by-side, calculate pallet positions, and model your real costs before you commit.*