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 Technologies develops high-performance propane heat pumps for industrial and commercial projects requiring dependable heating and cooling technology. As an European technology manufacturer, the company specialises in safe refrigerant solutions engineered for regulatory compliance, supplying R290-based heating systems, R290 chillers and advanced refrigeration equipment to customers around the globe.