Heat pumps
All Heat pumps news
Three-source heat pump system for cold climates
Chinese and Spanish researchers have developed a multi-source heat pump system combining air, water, and ground heat sources for improved performance in cold climates. The hybrid system achieves coefficient of performance values of up to 2.74 and uses an adaptive control strategy to optimize heat source selection across seasonal conditions.
Jul 14, 2026
Study finds residential heat pumps offer flexibility potential even during coldest periods
An international research team found that residential air-to-water heat pumps retain significant operational flexibility even during extreme winter conditions, as they rarely operate at their maximum capacity. The study of 761 systems in southern Germany shows that intelligent control and thermal storage strategies could enable grid-friendly load shifting while reducing peak electricity demand.
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Germany plans to reduce subsidies for heat pumps
Germany is planning to reduce funding limits under its BEG efficient buildings subsidy scheme, while introducing stronger income-based support and new eligibility rules for heat pumps. The proposed changes include lower eligible costs and a planned “Made in Europe” incentive for heat pump production.
Haier launches propane air-to-water heat pump for commercial applications
The new monobloc heat pump range uses propane refrigerant and is available in four versions from 26 kW to 40 kW. Haier says the system is designed for commercial buildings, retrofit projects, and applications requiring high-temperature water supply.
How to retrofit residential air-source heat pumps to run on DC
U.S. researchers showed that standard residential air-source heat pumps can be retrofitted to operate directly on DC power with only minor modifications and no significant loss in performance. Their lab, field, and modeling work further indicates that DC nanogrids can improve system efficiency and reduce electricity costs by about 12.5–16.7%, mainly by reducing power conversion losses and improving integration with solar and storage systems.
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Daikin unveils residential heat pump combining air-to-air and hydronic heating
The X Series heat pump integraes cooling, hydronic heating, and domestic hot water via one outdoor unit with inverter-based load sharing. It uses R-32 refrigerant, supports 180–230 L hot water storage, and connects to HEMS via Onecta for centralized, PV-optimized energy management.
Panasonic launches CO₂ air-to-water heat pump with coefficient of performance of 6.1
Panasonic has launched a residential CO₂ (R744) air-to-water heat pump range designed for efficient hot water production, even in low ambient temperatures, using natural carbon dioxide refrigerant.
The system offers 4.0 kW or 6.0 kW outdoor units with 250–400 L tank options, up to COP 6.1 performance, around 37 dB(A) operation, PV integration, and a 10-year warranty.
Lower temperatures, higher heat pump efficiency
A large-scale study of UK heat pump installations has revealed a major gap between hypothetical performance and real-world data. Changes to commissioning could make all the difference. pv magazine caught up with Oxford University’s Jan Rosenow and Heat Pump Monitor’s Trystan Lea to hear how installers can achieve higher seasonal performance factor (SPF) ratings for their customers.
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