All Heat pumps news

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Technology & Products
Trane unveils cold-climate heat pump operating down to -29 C Trane has launched a residential cold-climate air-source heat pump that operates at temperatures from -29 C to 46 C and is available in 3-ton, 4-ton and 5-ton versions using R-454B refrigerant. The system can deliver up to 107% of its rated heating capacity at -15 C and retain up to 85% at -29 C.
Emiliano Bellini
Sep 25, 2026
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Research & Development
Ventilator exhaust air, evaporative cooling boost residential heat pump efficiency South Korean researchers have developed a residential air-source heat pump concept that combines energy recovery ventilator exhaust air with direct evaporative cooling. The system improved COP by 7.3% to 15.2% under hot and humid conditions and could be suitable for retrofitting existing heat pumps.
Lior Kahana
Sep 24, 2026
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Technology & Products
Daikin unveils air-to-air heat pumps for highly insulated homes The Japanese manufacturer has introduced a new generation of its Ururu Sarara X reversible air conditioners, featuring heating capacities from 2.2 kW to 8.0 kW and a new compressor designed to improve efficiency under low-load operation.
Emiliano Bellini
Sep 24, 2026
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Research & Development
Negative electricity prices could favor thermal storage over industrial heat pumps Researchers compared the two technologies under varying negative-price frequencies, price levels and equipment costs. Their model found that the preferred option depended strongly on the required heat temperature, with storage gaining an advantage for steam production.
Lior Kahana
Sep 23, 2026
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Research & Development
Augmented reality helps heat pump installers cut workload, installation time Fraunhofer ISE has developed a manufacturer-neutral app that uses 3D scanning, augmented reality and automated planning to streamline heat pump installations. The software can optimize component placement and piping, estimate installation times, and generate bills of materials for installers.
Emiliano Bellini
Sep 23, 2026
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Research & Development
Cost-effective pathways for hybrid heat pump retrofits German researchers have developed a framework for integrating the simulation of a hybrid heat pump system into the techno-economic assessment of sequencing and bundling of building retrofits. A case study shows that the timing of building retrofit measures can significantly affect heating demand and the economics of the overall retrofit.
Lior Kahana
Sep 22, 2026
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Technology & Products
Carrier launches rooftop heat pump for commercial buildings Carrier has launched the WeatherFlex 50FC, a reversible air-to-air rooftop heat pump for commercial and industrial buildings, offering heating capacities of 22 kW to 50 kW and using R-454C refrigerant. The system operates at outdoor temperatures from -18 C to 50 C and features variable-speed scroll compressors.
Emiliano Bellini
Sep 22, 2026
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Markets & Policy
Slovakia slashes residential solar subsidy, shifts support toward heat pumps Slovakia’s state energy agency is overhauling its household renewable-energy subsidy program, cutting the maximum grant for rooftop solar by more than 70% while increasing support for heat pumps and biomass boilers.
Brian Publicover
Sep 21, 2026
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Research & Development
Predictive control cuts costs in buildings combining PV, heat pumps, EVs, thermal storage Researchers have developed a predictive rule-based control strategy for building energy systems integrating PV, heat pumps, thermal storage, and electric vehicles. Simulations show it can approach model predictive control performance while substantially reducing computational requirements and operating costs compared with conventional rule-based control.
Lior Kahana
Sep 21, 2026