Description
R407C Refrigerant Gas – 10 kg Cylinder | R22 Retrofit | UK Supplier
Refrigerant Gas Supplies Ltd, based in Wakefield, Yorkshire, supplies R407C in 10 kg refillable cylinders for HVAC engineers servicing legacy R22 air conditioning, heat pump and chiller systems across the UK. R407C (GWP 1,774) is the closest HFC retrofit for R22 equipment and remains widely used for maintaining the large installed base of converted R22 systems. F-Gas Category I certification is required to purchase. Next-day mainland UK delivery available.
Key Specifications
- Net weight: 10 kg per cylinder
- Composition: R32 (23%) / R125 (25%) / R134a (52%) — zeotropic HFC blend
- GWP: 1,774 | ODP: 0
- Safety rating: A1 (non-flammable, non-toxic)
- Temperature glide: ~7°C (charge as liquid)
- Primary use: R22 retrofit in legacy AC, heat pump and chiller systems
- Oil: POE oil required (mineral oil must be flushed before conversion)
- Certification: F-Gas Category I required
- Delivery: Next-day mainland UK delivery available
R407C as an R22 Retrofit
R22 (a hydrochlorofluorocarbon, HCFC) was banned from new equipment in 2004 and from service use in 2015 under EU/UK ozone legislation. The large installed base of R22 air conditioning systems across UK commercial buildings, hotels, hospitals and industrial sites required a retrofit solution. R407C became the standard HFC retrofit owing to its thermodynamic similarity to R22 and A1 safety rating.
Conversion from R22 to R407C requires: complete recovery of existing R22 charge, oil change from mineral oil to POE oil, replacement of filter-drier, inspection of seals and gaskets, and recharging with R407C as liquid (to preserve blend composition). Always follow the compressor manufacturer’s specific retrofit guidance.
F-Gas Status and Alternatives
R407C has a GWP of 1,774 and is subject to the UK F-Gas phase-down quota system. While not facing the same supply pressure as R404A (GWP 3,922), R407C availability will tighten over time. For all new installations, R32 is the current standard for AC and heat pump systems. Browse our full refrigerant gas range including R32, R410A, R404A and R134a.
Frequently Asked Questions
Is R407C a direct replacement for R22?
R407C is the closest HFC retrofit for legacy R22 systems, but is not a drop-in replacement. The system must be converted (oil change to POE, filter-drier replaced, seals checked) before charging with R407C. Always follow the equipment manufacturer’s retrofit guidance.
What is the GWP of R407C?
R407C has a GWP of 1,774 — mid-range among HFCs. Higher than R32 (675) but lower than R404A (3,922). R407C is subject to UK F-Gas phase-down quota restrictions.
Do I need F-Gas certification to buy R407C?
Yes. R407C is a regulated F-Gas. Valid F-Gas Category I certification is required to purchase and handle R407C. Refrigerant Gas Supplies Ltd supplies exclusively to F-Gas certified engineers and registered companies.
What temperature glide does R407C have?
R407C has a temperature glide of approximately 7°C. Always charge R407C as a liquid (not gas) to maintain correct blend composition and system performance.
