heat pump

Designed for commercial and multi-residential buildings, the Aqua‑G EVO heat pump can replace gas boilers, cascade up to eight units, and integrate with Panasonic’s complete HVAC ecosystem.

The Chinese manufacturer has unveiled a hybrid photovoltaic–geothermal heat pump system that uses solar electricity to directly power the unit, boosting efficiency and self-consumption. The 8–112 kW ground- and water-source system delivers heating, cooling, and domestic hot water with coefficients of performance often exceeding 4–5, while smart controls and the ground loop act as a thermal battery to optimize year-round performance.

Researchers in China demonstrated that integrating energy tower heat pumps with evaporator-side boilers, air-source heat pumps, or solar-assisted systems can significantly improve winter heating efficiency and economic performance in commercial buildings. Among the four configurations tested, the evaporator-side boiler and solar-assisted systems delivered the highest performance and energy savings, offering a sustainable, low-carbon alternative to conventional heating.

The Danish company said its configurable CO2 system delivers up to 4.8 MW per unit and is scalable to 50 MW for large industrial and commercial projects. The units offer hot water output of up to 95 C and compatibility with complex installations such as food processing, district heating, and commercial buildings.

The Italian heating solutions provider said its new Nuos Plus S2 Wi-Fi heat pump system offers up to 80% energy savings and a coefficient of performance of up to 3.51.

Lithuania-based Refra has launched its Oasis series of water-to-water heat pumps and chillers, offering capacities from 34 kW to 600 kW for small to large commercial and industrial applications. Featuring propane refrigerant, inverter-controlled compressors, and modular multi-circuit design, the units can reach a coefficient of performance of up to 5.1.

The Korean manufacturer has expanded its Therma V R290 heat pump line with three indoor unit options to improve installation flexibility. The new products are designed to deliver heating performance at ambient temperatures as low as -28 C and domestic hot water output of up to 75 C.

Heat pumps are increasingly used for domestic hot water in Europe due to their efficiency and compatibility with solar power, but their lower operating temperatures can create conditions where Legionella pneumophila may grow if systems are poorly designed. Proper hydraulic design, temperature control, and periodic thermal disinfection ensure both high efficiency and safe, hygienic operation.

The new product line covers 124–644 kW in heating and 128–632 kW in cooling, operates down to -15 C, and supports various configurations with R454B or R410a refrigerants.

Daikin has introduced two new propane heat pump lines for industrial and district heating applications, combining monobloc units from 20 kW to 85 kW with modular systems scalable up to 2 MW.