World News

Industry news and insights from Europe and around the World

UK News

Latest news and developments in the United Kingdom

Products

Keep up-to-date with the latest new products and technology

Features

General articles, applications and industry analysis

Honeywell releases low GWP R404A option


honeywell-solsticeBELGIUM: Honeywell has announced the availability of Solstice L40X, aka R455A, its low GWP replacement for R404A.

The refrigerant, which blends an HFO and an HFC with CO2, is designed for medium- and low-temperature stand-alone applications such as hermetically sealed systems in refrigerated plug-in-type cabinets. In these applications, Solstice L40X is said to provide up to 3% higher capacity and up to 6% better efficiency at low temperature than R404A.

A blend of 75.5% HFO R1234yf, 21.5% R32 and 3% CO2, it is an A2L gas with a low GWP of 146. It is said to match the capacity of R404A and has the same or better efficiency.

With the European F-gas regulations putting pressure on the use of high GWP refrigerants, Julien Soulet, managing director for Honeywell Fluorine Products EMEA and India, said: “Solstice L40X is available now and meets the demands of these regulations, while providing similar or even better performance compared to solutions that are being phased out. As companies evaluate the range of options that are available for medium- and low-temperature standalone applications, we expect that Solstice L40X will be an ideal solution that helps them meet environmental targets to reduce greenhouse gas emissions.”

Solstice L40X is rated A2L by ASHRAE. Leading hermetic compressor manufacturers have validated the performance of L40X in tests over the last 18 months and are said to have reported similar capacity and discharge temperatures, but with improved efficiency, when compared to R404A.

Honeywell says that Solstice L40X can be used across many segments of the HVACR industry, including small charge, plug-in type cabinets, condensing units and monoblocks for cold rooms and freezer rooms, small chillers, heat pumps, and chillers.

Related stories:

https://www.coolingpost.com/world-news/hfohfcco2-hybrid-on-its-way/

https://www.coolingpost.com/world-news/r404a-replacement-blends-hfcs-with-co2/

Latest News

30th April 2026

Danfoss backs new IOR Lego refrigeration kits

UK: Building on the success of its Lego refrigeration plant kit, the Institute of Refrigeration (IOR) has announced the launch of even more Lego kits in collaboration with Danfoss. 
30th April 2026

Carrier expands liquid cooling interest

USA: Carrier has increased its investment in ZutaCore, the US direct-to-chip, waterless liquid cooling solutions company that first attracted its interest last year.
30th April 2026

Danfoss builds oil-free capabilities

DENMARK: Danfoss is expanding its Extended Oil-Free (EXO) programme to optimise oil-free HVAC systems, centred on its Turbocor compressors to increase energy efficiency, reduce noise, and minimise maintenance.
30th April 2026

Gregory-Miles heads Tefcold UK sales

UK: Danish commercial refrigeration equipment wholesaler Tefcold has announced the appointment of Dan Gregory-Miles as head of sales for the UK & Ireland.
29th April 2026

Heat pumps earn their stripes at Chester Zoo

UK: In its ongoing partnership with Chester Zoo, Mitsubishi Electric is now supplying air-source heat pumps for the zebra, ostrich, and roan antelope habitats at the zoo’s Heart of Africa…
29th April 2026

Lawton looks to bridge the skills gap

UK: Copper tube and fittings manufacturer Lawton Tubes is appealing to businesses to help bridge the growing skills gap between younger and older generations of traders.