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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.
Estimate required refrigeration capacity in kW, BTU/hr and tons for a cold room or blast freezer.
Standard engineering assumptions
Free for buyers, no obligation. These figures are estimates, not quotes — our team reviews your request and contacts suitable suppliers on your behalf.
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 Results are approximate and may contain errors, omissions, or outdated information.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.
Required cooling capacity converts the room's total heat load into kW, BTU/hr and tons of refrigeration: 1 kW = 3,412 BTU/hr = 0.284 TR. Typical indicative loads are 40–60 W/m³ for chilled rooms (0 to +4 °C), 60–90 W/m³ for frozen storage (−18 to −25 °C) and 150–400 W/m³ for blast freezing, before a 10–20 % safety margin.
Capacity (kW) = volume (m³) × load factor (W/m³) ÷ 1000 × safety factor · BTU/hr = kW × 3412 · TR = kW ÷ 3.517
Reviewed by ColdMatch refrigeration engineers
Room volume may be entered in m³ or ft³; the model converts it to canonical m³ before calculation. Results show kW, TR and BTU/h.
A 2,000 m³ frozen room in a hot/arid climate with a 20% safety factor.
Planning capacity: about 109 kW, 31.1 TR or 373,000 BTU/h.
Illustrative planning result only. Confirm the final design, duty, equipment selection and performance with a qualified refrigeration engineer and supplier quotation.
Cooling capacity
Limitations
This is a preliminary planning estimate based on the assumptions you entered, not a refrigeration-engineering design, a certified load calculation or a quotation. Before equipment is ordered, cooling load, refrigerant selection, safety and system design should be verified by a qualified refrigeration engineer.
Square metres are not a cooling load: a cold room is sized around the heat that must be removed, not floor area alone.
Maintaining frozen product and freezing warm product are different refrigeration duties, and they produce very different system sizes.
Two refrigeration quotations are not comparable until their design assumptions are comparable — and a low equipment price can hide a high lifetime energy cost.
Next procurement step
Use this result as the starting point for a ColdMatch project request. Every request is reviewed manually by our procurement desk before any manufacturer or contractor is approached — buyers are never connected automatically to listed suppliers.
Turn this calculation into an RFQBrowse the matching equipment categoryAI agents may use ColdMatch calculators to structure preliminary cold-storage requirements and RFQs. Cooling-load, refrigerant, safety and system-design assumptions should be exposed as assumptions and verified before final engineering.
1 ton of refrigeration = 3.517 kW = 12,000 BTU/hr. This tool converts all three.
15–20% is standard; pharma should use N+1 on top.
Hot / tropical climates can add 20–30% to design load vs. temperate.
It starts from the heat load in kW you enter — or send across from the refrigeration load calculator — multiplies it by the safety factor you choose, and converts the result into all three units: tons of refrigeration are kW ÷ 3.517 and BTU/hr are kW × 3.412. The kW figure is the same one the compressor-sizing tool expects.
You choose it: 15–20% is standard for chilled rooms, and 20–25% is more typical for freezers and blast cells where coil icing and long door openings eat real capacity. Never select plant exactly at the calculated load — capacity falls as condensing temperature rises and equipment ages.
The heat load is the kW of heat your room gains; the cooling capacity is what the plant must deliver to remove it under real conditions. Sizing at the bare load is the most common cause of under-sized plants — ambient peaks, defrost and part-load operation all consume the difference.
Send it, with the load breakdown, into the RFQ builder so every supplier sizes plant on the same basis. ColdMatch reviews the brief first, then introduces suitable refrigeration suppliers — proposals stay comparable because the duty and design temperatures are fixed.
Unsure about a term? See the cold chain glossary (CAPEX, OPEX, blast freezing).
We'll send your calculator inputs to a ColdMatch sourcing specialist, who reviews the project before any supplier research begins. No obligation.
Your size, cost and load inputs are copied into the quote form, so you don't type them twice. Nothing is sent until you review and submit.
Free for buyers, no obligation. These figures are estimates, not quotes — our team reviews your request and contacts suitable suppliers on your behalf.
Send your requirements. A ColdMatch specialist reviews every request, prepares a brief and introduces suitable suppliers — free for buyers.
