R422D Refrigerant Gas

What R422D is and where it was used

R422D is a zeotropic blend of R125, R134a and R600a in proportions of 65.1 / 31.5 / 3.4 by mass. It is classed A1, non-flammable, despite the small isobutane share. It was designed as a retrofit refrigerant for R22 equipment that runs on mineral oil or alkylbenzene: split and packaged air conditioning, medium temperature cold rooms and display cases, and older condensing units. Its glide is about 5 K, so it is charged as liquid, and pressure readings use dew point for superheat and bubble point for subcooling. R422D is a different gas from R407F, and the two must not be mixed.

R422D status in 2026 under Regulation (EU) 2024/573

The AR4 GWP of R422D is 2,729, above the 2,500 threshold in Article 13. Since 1 January 2025, virgin F-gases at or above that GWP may not be used to service or maintain refrigeration equipment. From 1 January 2026, the 2,500 limit also applies to servicing air conditioning equipment and heat pumps. Article 13 sets narrow exceptions for reclaimed gas labelled under Article 12(7) and for recycled gas recovered from the same equipment.

Buying a cylinder does not make a servicing job lawful. Check the equipment category and the gas status against Article 13 before you plan any work with R422D. As an HFC, R422D also counts against the EU quota in tonnes CO2e.

Replacement paths for R422D and R22 systems

For an older air conditioning system, R407C (A1, GWP 1,774) is a common R22 retrofit gas, subject to an assessment of compressor, oil and expansion device. For medium temperature commercial refrigeration, R449A (A1, GWP 1,397) is a lower-GWP option, though it does not match R422D in every system. Where the plant is due for replacement, new air conditioners and heat pumps designed for R32 are the usual route; R32 is A2L and must never go into equipment not rated for it. Any retrofit needs the equipment maker's approval and a check of seals, filters, oil and charge.

Pack size and CO2e

R422D is listed as a single returnable cylinder with 10 kg of gas. That cylinder equals 27.29 t CO2e (2,729 x 10 / 1000), a high figure for a small quantity and one that shows why records and leak control matter for this gas. We do not offer multi-cylinder packs of R422D.

Availability, delivery and who may buy

R422D is out of stock at the moment. Use the contact page if you want to ask about availability or a lower-GWP alternative. When stock returns, it ships from Fréjus or Riga in 1-4 working days to France and 2-6 working days to other EU member states, and the empty cylinder goes back to the Riga warehouse.

Only certified F-gas technicians, companies employing certified staff and resellers can order. The checkout asks for the basis, the certificate number and the issuing country.