An international research team has developed a novel solar-air dual-source heat pump (SAHP) for water heating applications. The system's innovation lies in using a blower fan that enables forced ...

it automatically switches from the heat pump to the furnace.” Johnson Controls-Hitachi Air Conditioning offers three versions of the dual fuel system, weighing from 30.6 kg to 38.1 kg.

the maximum air volume is 62 CFM, the maximum static pressure is 2.5 mmH2O, the fan noise is 8 to 27 dBA, and the fan life (MTTF) is 160,000 hours. The pump size is 79.9mm wide, 76mm deep ...