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 dependable heating and cooling technology. As an established European producer, the company specialises in safe refrigerant solutions engineered for F-Gas requirements, supplying R290-based heating systems, propane chillers and professional cooling equipment to customers worldwide.