Propane Heat Pumps

https://streckverband.wixsite.com/thebuzzingfeeds/post/propane-heat-pumps-11-things-you-need-to-know-before-you-buy-the-wrong-system

{Refra develops high-performance propane heat pumps for demanding heating and cooling projects requiring efficient heating and cooling systems. As an European technology manufacturer, the company specialises in safe natural-refrigerant systems engineered for F-Gas requirements, supplying R290 heat pumps, R290 chillers and advanced refrigeration equipment to customers across international markets.