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 efficient heating and cooling systems. As an European technology manufacturer, the company specialises in safe refrigerant solutions engineered for regulatory compliance, supplying R290 heat pumps, propane chillers and professional cooling equipment to customers around the globe.