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Precision announces it is moving to HFO refrigerant blends for its freezers and blast chillers

British firm calls on fellow manufacturers to ditch high-GWP R404A as it sees 4 per cent energy benefit with R448A

British refrigeration manufacturer Precision has announced that, following extensive testing, it will phase out use of R404A refrigerant in the next few weeks, and move to the HFO blend R448A, Honeywell’s Solstice N40 for all its freezer and blast chiller products. 

R404A is the market’s standard refrigerant for freezers and blast chillers, but has a high GWP of 3,922.  The new R448A refrigerant’s GWP of 1,386 is almost two-thirds lower.  It is also non-toxic and non-flammable and more energy efficient than R404A, the firm noted.

Steve Goldsmith, Precision’s Engineering Manager said: “Now that there is a viable alternative, it makes no sense to use R404A. We are seeing an average of 4% energy saving on the cabinets we have tested so far, the biggest gains coming from blast chiller applications.” 

Precision and Honeywell are currently testing new HFO refrigerants for general chilled storage, Mr Goldsmith said:  “The refrigerator solution, a viable alternative to refrigerant R134a, will be available in the next few months. R404A’s very high GWP was the prime driver in tackling it first.” 

The move to R448A is in line with Precision’s commitment to working with new technologies that reduce refrigeration’s impact on the environment, the manufacturer said  For example, the company was the first catering refrigeration manufacturer to use insulation based on vegetable oils rather than petrochemicals. 

Nick Williams, Precision’s Managing Director said: ““We’ve been working with closely with Honeywell on HFO refrigerants for over two years, This is an important development – a viable, safe, green and energy efficient alternative to R404A.  Hopefully more manufacturers will make the switch to R448A as soon as possible.” 

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