Refrigerant Selection in UK Commercial Refrigeration
Commercial refrigeration encompasses a wide range of applications — from small under-counter cabinets to large industrial cold stores. The right refrigerant depends on the application temperature range, system size, energy efficiency targets and F-Gas compliance requirements.
Common UK Commercial Refrigeration Refrigerants
R404A — Legacy Medium and Low Temperature
R404A has historically been the standard for medium-temperature display cabinets and low-temperature freezers in supermarkets, convenience stores and cold stores. Its GWP of 3922 makes it subject to F-Gas phase-down restrictions, and alternatives are strongly recommended for new installations.
R448A and R449A — Lower-GWP Replacements
R448A (GWP ~1387) and R449A (GWP ~1282) are the primary drop-in replacements for R404A in commercial refrigeration. Compatible with existing equipment, they offer significant GWP reductions without requiring complete system redesign.
R134a — Medium Temperature
R134a is used in medium-temperature commercial applications including drinks coolers, wine cabinets and server room cooling. GWP 1430.
R744 (CO2) — Future-Proof Low GWP
CO2 transcritical systems are increasingly used in supermarket refrigeration due to their ultra-low GWP (1) and energy efficiency at low temperatures. However, they require purpose-built high-pressure equipment and specialist commissioning.
R290 (Propane) — Small Commercial Equipment
Self-contained commercial equipment (ice cream cabinets, small display coolers) increasingly uses R290 propane. GWP of 3 makes it future-proof, but A3 flammability classification limits application scope.
Sourcing Commercial Refrigeration Refrigerant in the UK
We supply commercial refrigeration engineers across the UK with R404A, R134a and full product ranges. Browse our refrigerant gas range for current stock and pricing.