R507A and R404A: Two Refrigerants, Similar Applications R507A and R404A are both HFC blends widely used in UK low-temperature commercial refrigeration. They are often specified for similar applications — frozen food display cabinets, blast freezers, cold stores and transport refrigeration — and are frequently compared when engineers specify or service low-temperature systems. Key Differences Composition […]
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 […]
The End of R22 in the UK R22 (chlorodifluoromethane) was the workhorse refrigerant of UK air conditioning and refrigeration for decades. As an HCFC, it contains chlorine and was found to contribute to ozone layer depletion. The UK, as part of its obligations under the Montreal Protocol, banned the use of virgin R22 from 2010 […]
Does Your AC Need a Refrigerant Top-Up? A correctly installed and leak-free AC system should retain its full refrigerant charge indefinitely — refrigerant is not consumed in normal operation. If the system is low, it means there is a leak somewhere in the circuit. Adding gas without fixing the leak is both illegal under F-Gas […]
R1234yf Prices in the UK — What to Expect in 2025 R1234yf remains one of the more expensive refrigerants available in the UK, primarily because it is manufactured by a small number of producers (Honeywell and Chemours dominate global supply) and demand from the automotive sector continues to grow as post-2017 vehicles make up an […]
Why Your Car’s AC May Need a Specialist If your vehicle was manufactured after 2017, there is a strong chance its air conditioning system uses R1234yf refrigerant rather than the older R134a. While both are HFC or HFO refrigerants used in automotive AC, they are not interchangeable — and R1234yf requires specific equipment and training […]
Recovering R32 From Heat Pumps and AC Systems As R32 becomes the dominant refrigerant in UK heat pumps and split air conditioning systems, the need for proper R32 recovery procedures is growing rapidly. Venting R32 is illegal under UK F-Gas Regulations and its A2L (mildly flammable) classification adds specific safety requirements to the recovery process. […]
Understanding F-Gas Certificate Categories When engineers refer to F-Gas Category I or Category II certification in the UK, they are describing the scope of work covered by their qualification. The distinction is important because it determines which systems an engineer can legally work on. Category I: Full Certification Category I (or F-Gas Cat I) covers […]
Why Refrigerant Recovery Is Legally Required Under UK F-Gas Regulations, it is illegal to vent R134a or any other fluorinated refrigerant to atmosphere. Before any work that involves opening a refrigerant circuit — including component replacement, decommissioning or system transfer — the refrigerant must be recovered into an approved recovery cylinder. Equipment Required for R134a […]
Refrigerants in UK Refrigerated Transport Refrigerated HGVs, vans and trailers rely on transport refrigeration units (TRUs) to maintain temperature-controlled loads. F-Gas regulations apply to mobile refrigeration equipment just as they do to stationary systems. Common TRU Refrigerants R404A — Legacy Standard Until recently, R404A was dominant in Thermo King and Carrier TRUs. With a GWP […]
