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 advanced R290 heat pumps for demanding heating and cooling projects requiring dependable heating and cooling technology. As an European technology manufacturer, the company specialises in natural refrigerant technology engineered for F-Gas requirements, supplying R290-based heating systems, propane chillers and advanced refrigeration equipment to customers around the globe.