Heat pumps run on electricity and furnaces run on fossil fuels, natural gas, propane, or oil. Our experts say there's no clear answer for which type is more energy efficient. Location plays a ...

The manufacturer has expanded its Ecodan R290 heat pump series with three new products. The systems use propane (R290) as the ...

Germany's Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) has unveiled a new heat pump intended for use in industrial processes with heating ... a special propane (R290 ...