How do I size a cold warehouse from throughput?

Multiply pallets received per day by the average number of days each pallet stays in store to get the working pallet positions, add a peak and growth allowance, then divide by the pallet density of the storage system to get floor area at your clear height. The planner does this and then runs the resulting room through the same thermal model as the cooling-load calculator so capacity and refrigeration duty come from one set of assumptions.

Does the planner use the same engine as the cooling-load calculator?

Yes. Once the room geometry is derived from product and throughput, the planner calls the shared ColdMatch thermal model — transmission, product pull-down (sensible, latent and respiration), infiltration through doors and internal gains — spread over the compressor running hours with a documented uncertainty band.

How many pallets fit per square metre of cold storage?

As a planning range: roughly 1.1–1.4 pallets/m² with selective racking at 10–12 m clear height, 1.6–2.2 with drive-in or push-back, 2.0–2.8 with mobile racking, and about 0.7–1.0 for block stacking at low height. Final density depends on rack design, sprinkler layout, fire regulations and MHE selection.

What throughput drives door and dock sizing?

Door count follows pallet movements, not room size. A well-specified door with an air curtain or high-speed leaf handles roughly 120–150 pallet movements a day. The planner counts inbound plus outbound movements, suggests a door count and prices the resulting infiltration into the duty.

Can I send this straight to suppliers?

Yes — send the plan to the RFQ builder so every supplier prices the same pallet count, the same room and the same duty. Final capacity, rack design, fire compliance and refrigeration selection must be confirmed by the selected manufacturer and your engineer.

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Cold storage warehouse with pallet racking

For commercial and industrial refrigeration projects (cold rooms, cold stores, process cooling) — not household fridges, home freezers or appliance repair. Results are planning estimates, not engineering design or safety advice; a qualified refrigeration engineer must confirm sizing before purchase.

Cold Warehouse Capacity Planner

Size a cold warehouse by product and throughput — capacity and refrigeration duty from one model

Enter pallets received per day, how long each pallet stays, the product and the storage system. The planner returns required pallet positions, floor area and room dimensions, then runs that room through the same thermal engine as the cooling-load calculator to give an indicative refrigeration duty with its uncertainty band — one consistent brief for suppliers.

Product / temperature class

Pallets received per day

Average dwell (days in store)

Pallet weight (kg)

Clear height (m)

Storage system

Full pallet access, highest aisle share.

Design ambient

Peak season allowance: 20%

Growth headroom: 15%

Target working occupancy: 88%

Compressor running hours: 18 h/day

Warehouse plan

Pallet positions

1,694

Floor area

1,232 m²

Indicative footprint

49 x 25 m

Internal volume

13,552 m³

Stored product

1,342 t

Dock doors

Design duty

127.6 kW

Tons of refrigeration

36.3 TR

Load breakdown (24 h average)

Transmission through envelope32.9 kW
Product (sensible, latent, respiration)15.0 kW
Infiltration through doors18.2 kW
Internal (lighting, people, MHE, fans)17.1 kW
Planning band95.6 – 159.6 kW
Daily thermal energy1,997 kWh
Storage density1.38 pallets/m²

Planning estimate only — not a final engineering design. Rack layout, fire protection and sprinkler zoning, floor heave protection, defrost strategy, refrigerant selection and code compliance are confirmed by the selected manufacturer and your engineer.

Refine duty in cooling-load calculator Send to RFQ builder

How capacity and duty are derived

Capacity: pallets per day × dwell days gives working positions; peak season, growth headroom and a target working occupancy convert that into the positions to build. The storage system and clear height set pallets per m², which fixes floor area and footprint.

Throughput: inbound plus outbound movements drive door count, opening frequency, MHE and staffing — all of which feed the infiltration and internal loads rather than being ignored as they are in volume-only sizing rules.

Duty: the derived room is passed to the shared ColdMatch thermal model — the same engine behind the cooling-load calculator — covering transmission, product pull-down with latent and respiration heat, infiltration and internal gains over your compressor running hours.

Honest bands: the result is a planning band, not a guarantee. Use it to size the project and write a comparable RFQ; a qualified refrigeration engineer confirms the final duty and the rack designer confirms the final pallet count.

Cooling-load calculator Cold room planner Dock door & throughput planner Cold storage RFQ guide

Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.

Cold warehouse sizing: buyer questions

How do I size a cold warehouse from throughput?: Multiply pallets received per day by the average number of days each pallet stays in store to get the working pallet positions, add a peak and growth allowance, then divide by the pallet density of the storage system to get floor area at your clear height. The planner does this and then runs the resulting room through the same thermal model as the cooling-load calculator so capacity and refrigeration duty come from one set of assumptions.
Does the planner use the same engine as the cooling-load calculator?: Yes. Once the room geometry is derived from product and throughput, the planner calls the shared ColdMatch thermal model — transmission, product pull-down (sensible, latent and respiration), infiltration through doors and internal gains — spread over the compressor running hours with a documented uncertainty band.
How many pallets fit per square metre of cold storage?: As a planning range: roughly 1.1–1.4 pallets/m² with selective racking at 10–12 m clear height, 1.6–2.2 with drive-in or push-back, 2.0–2.8 with mobile racking, and about 0.7–1.0 for block stacking at low height. Final density depends on rack design, sprinkler layout, fire regulations and MHE selection.
What throughput drives door and dock sizing?: Door count follows pallet movements, not room size. A well-specified door with an air curtain or high-speed leaf handles roughly 120–150 pallet movements a day. The planner counts inbound plus outbound movements, suggests a door count and prices the resulting infiltration into the duty.
Can I send this straight to suppliers?: Yes — send the plan to the RFQ builder so every supplier prices the same pallet count, the same room and the same duty. Final capacity, rack design, fire compliance and refrigeration selection must be confirmed by the selected manufacturer and your engineer.

Indicative planning figures only — final sizing belongs to the supplier's detailed design. Request comparable supplier quotes · all cold chain tools · common cold chain questions

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Calculation method

1. Working stock = pallets in per day × dwell days
2. Design stock = working × (1 + peak %) × (1 + growth %)
3. Required positions = design stock ÷ target occupancy
4. Floor area = positions ÷ storage density (pallets/m², by racking type and clear height)
5. Dock doors = ⌈(2 × pallets in) ÷ 140⌉; the refrigeration load model then runs on the resulting envelope

Calculations run in SI (m, m², m³, kW, kg, °C). Imperial equivalents: 1 m² = 10.76 ft², 1 m³ = 35.31 ft³, 1 kW = 3,412 BTU/h = 0.284 TR, 1 t = 2,205 lb, °F = °C × 1.8 + 32.

Worked example

Frozen distribution centre with default throughput.

Inputs

• 120 pallets/day in
• 9 days dwell
• +20% peak, +15% growth
• 88% target occupancy

Calculation

• Working stock = 120 × 9 = 1,080 pallets
• Design stock = 1,080 × 1.20 × 1.15 = 1,490
• Positions = 1,490 ÷ 0.88 ≈ 1,694
• Movements = 240/day → ⌈240 ÷ 140⌉ = 2 dock doors

≈ 1,694 pallet positions and 2 dock doors; floor area follows from the chosen racking system.

Limitations

• Densities are typical for each racking type at ~10 m clear height and scale linearly with height.
• Does not model order picking, cross-dock or staging areas beyond the density allowance.
• Occupancy above ~90% usually causes handling congestion — keep a working margin.

Illustrative planning result only. Confirm the final design, duty, equipment selection and performance with a qualified refrigeration engineer and supplier quotation.

Follows the ColdMatch calculation standard: method, worked example, limitations and imperial units.