Calculate, validate, decide.
Ten free calculators for cold-chain decision-making, sized to ASHRAE Refrigeration Handbook Ch. 24 and cross-validated against eight industry tools (Heatcraft, Copeland, Coolselector, Bitzer, K-RP). Defaults match Pakistan ambient and Izhar PIR panel SKUs. New: ROI & Payback Calculator (Tool 10) and the 5-question Concept Wizard.
5-Question Concept Wizard
Not sure exactly what you need? Answer five questions about your product, capacity, location, timeline, and contact. The structured brief lands on an engineer's WhatsApp in seconds — sized concept and indicative budget back within 24 hours. No login. No email gate.
→ Tool · 10 ★ NEWCold Store ROI & Payback
What is spoilage costing you right now? What does a cold store cost? When does it pay back? Four inputs, three numbers, a 10-year cash chart. Math grounded in FAO postharvest losses, ASHRAE Ch. 24, and Pakistan + Saudi published tariffs. The payback number nobody else publishes.
→ Tool · 09Sandwich Panel Price
Indicative PKR per m² and per sqft for 4×8 ft FireSafe PIR sandwich panels in Pakistan. Pick thickness, facing, length, quantity, and city — get a defensible band in seconds. Q2 2026 market data.
→ Tool · 08 ★ NEWCold Store Cost Estimator
Sales-engineer tool. Rough cost estimate with editable Izhar margin line. Combines sizing engineering + civil + refrigeration + electrical + doors + controls. ±20% indicative band — exact cost will differ. Engineer validation required.
→ Project ShellMulti-System Project
Plan a multi-zone facility — chiller + freezer + dock + pharma — under one project file. Save and reload as .json. Aggregate roll-up across all systems.
→ Tool · 01Cold Room Heat Load
Size the refrigeration capacity for your cold room — by application, geometry, panels, product, and Pakistan ambient. Live 3D visualisation.
→ Tool · 02Energy Cost & Payback
Compare two panel-thickness scenarios. Annual PKR cost, savings, payback period, 10-year NPV. The ROI tool nobody else has.
→ Tool · 03A2L Min Room Area
Verify minimum floor area for A2L refrigerants per IEC 60335-2-89:2019. Leakable-charge method, ASHRAE 15 occupancy classes.
→ Tool · 04Refrigerant Charge
Estimate total system charge from line lengths, climate, and equipment. 12 refrigerants — R-449A, R-454C, R-290, R-717.
→ Tool · 05Condenser Sizing
Air-cooled condenser capacity from evaporator load + ambient + refrigerant. Pakistan ambient derate built in.
→ Tool · 06Capacity Planner
"I have 50 tonnes of mangoes" → "you need a 200 m³ room with 380 m² of panels." 24 Pakistan crops with stacking densities. For non-engineer buyers.
→ Tool · 07CA Atmosphere Designer
Controlled atmosphere O₂ / CO₂ / N₂ recipe + chamber sizing + N₂ generator. 12 CA-storeable crops per USDA Handbook 66.
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