![Dr Jan Rosenow on Twitter: "Excellent data from @ETH_en shows how increasing market maturity has hugely increased heat pump efficiency in Switzerland. https://t.co/0vz30ms0Nq" / Twitter Dr Jan Rosenow on Twitter: "Excellent data from @ETH_en shows how increasing market maturity has hugely increased heat pump efficiency in Switzerland. https://t.co/0vz30ms0Nq" / Twitter](https://pbs.twimg.com/media/Eapdc8jWsAISMv8.png)
Dr Jan Rosenow on Twitter: "Excellent data from @ETH_en shows how increasing market maturity has hugely increased heat pump efficiency in Switzerland. https://t.co/0vz30ms0Nq" / Twitter
Heat pumps efficiency of air source compare to ground source. Source:... | Download Scientific Diagram
![Air-Source Heat Pump or Air-to-Air Heat Pump | EGEE 102: Energy Conservation and Environmental Protection Air-Source Heat Pump or Air-to-Air Heat Pump | EGEE 102: Energy Conservation and Environmental Protection](https://www.e-education.psu.edu/egee102/sites/www.e-education.psu.edu.egee102/files/images/Lesson_08/BalancePoint.jpg)