Engineering tools

Calculate, validate, decide.

Six free calculators for walk-in cooler and freezer decision-making, sized to ASHRAE Refrigeration Handbook Ch. 24, IEC 60335-2-89:2019, and NIST REFPROP. Built in Hudson, NY — grounded in U.S. metro ambient conditions, Foster panel U-values, and the EPA AIM Act refrigerant transition.

Tool · 01

Cold Room / Walk-In Heat Load

Size the refrigeration capacity for your walk-in — by application, geometry, panels, product, and U.S. metro ambient.

ASHRAE Ch. 24 17 presets
Tool · 02

Energy Cost & Payback

Compare two panel-thickness scenarios. Annual USD cost, savings, payback period, 10-year NPV.

USD / kWh EIA tariff data
Tool · 03 · EPA AIM Act

A2L Min Room Area

Verify minimum floor area for A2L refrigerants per IEC 60335-2-89:2019 — the calculation behind the 2026 low-GWP refrigerant transition.

IEC 60335-2-89 5 A2L refrigerants
Tool · 04

Refrigerant Charge

Estimate total system charge from line lengths, climate, and equipment. 12 refrigerants — R-449A, R-454C, R-290, R-717.

12 refrigerants NIST REFPROP
Tool · 05

Condenser Sizing

Air-cooled condenser capacity from evaporator load, ambient, and refrigerant. Hot-climate ambient derate built in.

THR factor ASHRAE Ch. 35
Tool · 06

Cold Storage ROI & Payback

What is spoilage costing you right now? What does a walk-in cost? When does it pay back? Four inputs, three numbers, a 10-year cash chart.

USD ±20% band 10-year cash chart
Build & Quote · Live 3D

Ready to build? Configure & price your walk-in

Sized your load, checked your refrigerant — now configure the real thing. Live 3D, ASHRAE heat-load math, PDF spec sheet, price in 60 seconds.

Three.js · WebGL PDF spec sheet
Methodology

Engineering you can defend in front of a regulator.

ASHRAE Handbook — Refrigeration 2022, Chapter 24 "Refrigerated-Facility Loads" IEC 60335-2-89:2019 — A2L charge limits, leakable-charge method ISO 5149-1 — Refrigerating systems and heat pumps, safety NIST REFPROP 10.0 — Refrigerant thermodynamic properties EPA AIM Act 40 CFR Part 84 — U.S. HFC/GWP transition Cross-validated within ±20% of Heatcraft NROES, Copeland AE-103, Danfoss Coolselector®2, Bitzer Software
Get in touch

Tell us your product and your temperature — we'll quote it in 24 hours.

Computed a load, sized a room, picked a refrigerant — now let our engineers verify and quote.

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