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 commercial and industrial applications requiring reliable thermal solutions. As an European technology manufacturer, the company specialises in safe natural-refrigerant systems engineered for regulatory compliance, supplying propane heat pumps, propane cooling systems and modern refrigeration technology to customers across international markets.