All Heat pumps news

View article
Technology & Products
Linuo Ritter launches 24-32 kW propane heat pumps for commercial, large residential buildings The Chinese manufacturer has introduced three air-to-water propane heat pumps for commercial and large residential applications. The new units have nominal heating capacities of 24 kW, 28 kW and 32 kW, with a maximum leaving water temperature of 75 C.
Emiliano Bellini
Sep 21, 2026
View article
Technology & Products
Johnson Controls unveils industrial heat pump with 122 C output The Sabroe HitemHP uses butane or isobutane as its refrigerant and delivers between 100 kW and 1 MW of heating capacity. Johnson Controls says the single-stage system can operate at loads as low as 18% of its rated capacity.
Emiliano Bellini
Sep 18, 2026
View article
Research & Development
Shower wastewater heat pump achieves year-round COP of up to 4.1 Chinese researchers tested a hybrid shower wastewater- and air-source heat pump at university dormitories, recording a stable monthly COP of 3.4 to 4.1 over one year. The system cut annual carbon dioxide emissions by up to 77.77% and offered lower life-cycle costs than conventional boilers under typical market conditions.
Lior Kahana
Sep 18, 2026
View article
Technology & Products
Trane releases vertical-stack heat pumps for multi-story buildings Trane has updated its 0.75-ton to 3-ton Axiom vertical-stack water-source heat pumps with an optional factory-installed energy-recovery ventilator and a new 1.65-meter cabinet. The R-454B units deliver efficiencies of up to 16 EER and feature a backward-compatible, removable chassis for easier replacement and servicing.
Emiliano Bellini
Sep 17, 2026
View article
Research & Development
LG tests heat pumps with P2H hot-water system in apartment building LG Electronics is testing apartment heat pumps alongside a centralized power-to-heat hot-water system at an occupied residential building on South Korea’s Jeju Island. The pilot will use surplus renewable electricity to produce and store heat, with operational testing scheduled to begin in December.
Emiliano Bellini
Sep 16, 2026
View article
Technology & Products
Rheem launches air-to-water heat pumps for multifamily houses Rheem’s Torin commercial air-to-water heat pumps achieve a COP of up to 4.5. The units can also deliver outlet-water temperatures of up to 65.6 C.
Emiliano Bellini
Sep 15, 2026
View article
Research & Development
Photovoltaic-thermal heat pump based on bio-based surface coating achieves 77.32% overall efficiency Iraqi researchers have developed a PVT heat pump featuring a bio-based TiO₂–linseed-oil coating and three alternative refrigerants. The system achieved up to 77.32% overall efficiency and reduced PV module temperatures by as much as 34 C.
Lior Kahana
Sep 14, 2026
View article
Technology & Products
Whspr launches 4 kW propane heat pump for space-constrained homes The Dutch startup’s new 4 kW R290 monobloc heat pump is designed for terraced houses and can operate on a standard 230 V electrical supply. The unit has a SCOP of 4.51 and a stated sound power level of 50.8 dB(A).
Emiliano Bellini
Sep 09, 2026
View article
Research & Development
New optimization method improves heat pump sizing by accounting for part-load efficiency Austrian researchers have developed an optimization framework that accounts for part-load efficiency when sizing and operating heat pumps, enabling more realistic system planning. A case study in Innsbruck found the approach could cut electricity consumption by 4.5% and annual costs by 2.9%, while relaxed formulations significantly reduced computation times.
Lior Kahana
Sep 08, 2026