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Johnson Controls-Hitachi Air Conditioning has developed a residential dual fuel heat pump system that combines an air source heat pump and a gas boiler. The manufacturer claims that the boiler is designed to ensure that heating performance is not compromised, even when temperatures are extremely low. Johnson Controls-Hitachi Air Conditioning has launched a new residential heat pump system that combines an air source heat pump (ASHP) and a gas boiler. “When temperatures are extremely low, most heat pumps rely on energy-intensive electrical resistance heating, which can significantly increase utility costs and overload the electrical grid,” said the refrigeration specialist. and heating based in the United States. “To maximize efficiency and not compromise heating performance, it is often more sustainable to use the boiler as a backup heat source during the coldest days of the year.” The company said the new air365 Hybrid system uses a Hitachi Mini VRF electric heat pump as the primary heating and cooling source. “When the air365 Hybrid system is in heating mode, a smart sensor monitors the outside temperature,” the company explained. “If it reaches a temperature where the heat pump cannot efficiently meet the indoor heating demand, it automatically switches from the heat pump to the boiler.” Johnson Controls-Hitachi Air Conditioning offers three versions of the dual fuel system, ranging in weight from 30.6 kg to 38.1 kg. The smallest system has a nominal cooling capacity of 36,000 British Thermal Units (BTU)/h and a nominal heating capacity of 40,000 BTU/h. The largest system has a cooling capacity of 60,000 BTU/h and a heating capacity of 66,000 BTU/h. “The Mini VRF heat pump offers reliable performance over a wide range of temperatures, from -5ºC outdoor ambient temperature in cooling mode to -20ºC in heating mode,” says the manufacturer. “All models incorporate night switching, which allows the outdoor unit to operate very quietly, with just 44 decibels, or 10 decibels less than the average domestic refrigerator.” The dual fuel system also incorporates the Affinity gas boiler from the American manufacturer York, a subsidiary of Johnson Controls. |
