What does the cold room planner calculate?

It converts room dimensions, target temperature, insulation panel thickness, door openings per day and daily product intake into a room plan: internal volume, envelope panel area, recommended insulation, pallet capacity, indicative cooling duty split by transmission, infiltration, product and internal loads, and a suggested number of doors.

How is it different from the cooling-load calculator?

The planner sizes the room itself — geometry, envelope, capacity and door strategy — and gives an indicative duty so you can sanity-check the layout. The cooling-load calculator is the detailed duty step, with optimistic, base and pessimistic scenarios. Plan the room first, then refine the duty.

What insulation thickness does a cold room need?

As a planning rule: about 80–100 mm PIR/PUR for chilled rooms near +2 °C, 120–150 mm around 0 to −5 °C, 150–180 mm for −18 °C frozen storage and 180–200 mm or more for blast freezing and −25 °C or colder. Hot ambients, thin floors and high door traffic push the thickness up.

How many doors should a cold room have?

Doors are driven by throughput, not by room size alone. As a planning figure, one well-specified door with an air curtain or high-speed leaf handles roughly 120–150 pallet movements a day; beyond that, add doors or a dock airlock. Every extra door adds infiltration load and cost.

Can I use this output in a supplier RFQ?

Yes — the plan is a starting brief. Send it to the RFQ builder so every supplier prices the same room, the same duty and the same exclusions. Final sizing, refrigerant selection and code compliance must be confirmed by the selected manufacturer and your engineer.

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Insulated industrial cold room with refrigeration units

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 Room Planner

Cold room planner: dimensions, insulation, doors and product load in one room plan

Set the room geometry, temperature class, panel thickness, door traffic and daily product intake. The planner returns the insulated envelope area, pallet capacity, door count and an indicative cooling duty broken into transmission, infiltration, product and internal load — ready to refine in the cooling-load calculator and send to suppliers as one comparable brief.

Length (m)

Width (m)

Height (m)

Temperature class

Design ambient

Insulation panel thickness: 150 mm

Door openings per day: 160

Intake (t/day)

Product in (°C)

Pull-down (h)

Indicative room plan

43.9 kW

12.5 TR · -18 °C room · ΔT 53 K · incl. 15% margin

Internal volume

4,800 m³

Floor area

600 m²

Insulated panel area

2,000 m²

Recommended panel

160 mm

Pallet positions

~1,566

Doors suggested

Load breakdown

Transmission (envelope)17.5 kW
Infiltration (door openings)0.7 kW
Product pull-down17.3 kW
Internal (lighting, fans, MHE)2.7 kW

Planning estimate only — not a final engineering design. Defrost strategy, floor build-up and heave protection, refrigerant selection, humidity control and code compliance are confirmed by the selected manufacturer and your engineer.

Refine in cooling-load calculator Send to RFQ builder

How the room plan is built

Envelope: walls, roof and floor panel areas are derived from the dimensions, then a U-value is scaled from the panel thickness for the temperature class. Transmission load is U × area × ΔT with a 10% allowance for thermal bridging at joints, corners and door frames.

Doors: each opening exchanges warm air with the room. The planner converts openings per day into an average infiltration load and suggests a door count from pallet movements — the trigger for air curtains, high-speed doors or a dock airlock.

Product: daily intake, arrival temperature and the pull-down window produce the product load, usually the largest single item in food and blast applications.

Capacity: usable volume after aisles and clearances is converted into pallet positions so layout and duty are planned against the same room, not two different rooms.

Cooling-load calculator Warehouse capacity planner Cold room size calculator 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 room planning: buyer questions

What does the cold room planner calculate?: It converts room dimensions, target temperature, insulation panel thickness, door openings per day and daily product intake into a room plan: internal volume, envelope panel area, recommended insulation, pallet capacity, indicative cooling duty split by transmission, infiltration, product and internal loads, and a suggested number of doors.
How is it different from the cooling-load calculator?: The planner sizes the room itself — geometry, envelope, capacity and door strategy — and gives an indicative duty so you can sanity-check the layout. The cooling-load calculator is the detailed duty step, with optimistic, base and pessimistic scenarios. Plan the room first, then refine the duty.
What insulation thickness does a cold room need?: As a planning rule: about 80–100 mm PIR/PUR for chilled rooms near +2 °C, 120–150 mm around 0 to −5 °C, 150–180 mm for −18 °C frozen storage and 180–200 mm or more for blast freezing and −25 °C or colder. Hot ambients, thin floors and high door traffic push the thickness up.
How many doors should a cold room have?: Doors are driven by throughput, not by room size alone. As a planning figure, one well-specified door with an air curtain or high-speed leaf handles roughly 120–150 pallet movements a day; beyond that, add doors or a dock airlock. Every extra door adds infiltration load and cost.
Can I use this output in a supplier RFQ?: Yes — the plan is a starting brief. Send it to the RFQ builder so every supplier prices the same room, the same duty and the same exclusions. Final sizing, refrigerant selection and code compliance 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

Next steps for your project

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Free for buyers, no obligation. These figures are estimates, not quotes — our team reviews your request and contacts suitable suppliers on your behalf.

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Calculation method

1. Floor (m²) = length × width; volume (m³) = floor × height
2. Insulated envelope (m²) = 2 × (L + W) × H + 2 × floor (walls, roof, floor)
3. Transmission (kW) = U × envelope × ΔT × 1.1 ÷ 1000, with U scaled by panel thickness
4. Infiltration from door openings × 6.24 m² door × 0.9; product = intake × cp × ΔT ÷ pull-down time
5. Duty = (transmission + infiltration + product + 4.5 W/m² internal) × 1.15; pallets ≈ volume × 0.62 ÷ 1.9

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

Default room: 30 × 20 × 8 m chilled/frozen store receiving 20 t/day.

Inputs

• 30 × 20 × 8 m (98 × 66 × 26 ft)
• 150 mm panel (5.9 in)
• 160 door openings/day
• 20 t/day intake at 10 °C (50 °F)

Calculation

• Floor = 600 m² (6,458 ft²); volume = 4,800 m³ (169,500 ft³)
• Envelope = 2 × 50 × 8 + 2 × 600 = 2,000 m² (21,530 ft²)
• Pallets ≈ 4,800 × 0.62 ÷ 1.9 ≈ 1,566 positions
• Pallet movements ≈ 20,000 kg ÷ 700 kg ≈ 29/day → 1 dock door

≈ 1,566 pallet positions behind 2,000 m² of insulated panel; the duty figure on the page then depends on the selected temperature and ambient.

Limitations

• Single-room model; multi-zone stores, anterooms and docks need a separate load per zone.
• Door model assumes a 2.4 × 2.6 m door with no curtain — use the door infiltration calculator for protected doors.
• Product load assumes the stated pull-down time; fast freezing belongs in the blast/IQF calculators.

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.