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End date:
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Participating countries

Austria, France, Germany, Japan, Italy, South Korea, Sweden, USA

Heat pump systems with low GWP refrigerants

This annex aims at promoting low GWP refrigerant application to accelerate phase down of high-GWP HFCs by developing design guidelines of optimized heat pump components and system for low-GWP refrigerants through the review of available low-GWP refrigerants, their properties and applicable standards, safety and flammability of refrigerants, and safe use of flammable refrigerants:

• Optimization of heat pump components and system for low-GWP refrigerants;

• Analysis of the LCCP impact by the current design and optimized design with low-GWP refrigerants;

• Market opportunity study for heat pumps with
low-GWP refrigerants and low-GWP refrigerants availability for 2030. Target applications are air-conditioning and heat pump systems for residential and commercial buildings.

Annex 54 aligns with IEA’s vision and mission by targeting clean, low-carbon energy systems’ design and applications. It will assist IEA to achieve its strategic goals by promoting new, alternative or natural refrigerants with low-GWP for heat pumps. By engaging experts world-wide, the annex will promote environmental awareness to policy makers.