Heat pumps are literally the hottest trend in keeping our homes comfortable during the winter. Already much more climate-friendly than gas boilers or oil burners, heat pumps are set to become even more ecological. Markus Sundbrandt of Bosch Home Comfort talks about his search for a refrigerant that has a lower impact on the climate than what’s circulating in most heat pumps today. The new refrigerant has a global warming potential of only 3, compared to about 2,000 for traditional refrigerants. What these numbers mean, what this new substance is and why it has its downsides, too: all of that and more in this cozy episode, warmly hosted by Melena and Geoff.

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