First 9-in-1 heat pump transforms load into an energy hub

Differ Power will introduce its D1 Series at Intersolar Europe 2026 in Munich, positioning the residential heat pump as a power management hub rather than only a heating and cooling appliance.

The D1 Series is described as the world’s first 9-in-1 integrated solar-storage air-to-water heat pump system, combining space heating, cooling, domestic hot water, PV inversion, battery management, PCS, backup power, home energy management, and gateway control into one platform. It uses the low-GWP refrigerant R290 and is designed for European residential heating, cooling, and domestic hot water, including new-build homes, retrofit projects, and properties with existing or planned rooftop PV.

Conventionally one of the largest electrical loads in an electrified home, the heat pump here becomes the point where rooftop PV, battery storage, thermal demand, backup power, and household supply are coordinated. Rather than installing a separate heat pump, solar inverter, battery controller, and energy manager side by side, the D1 Series brings these functions into a single platform. The integrated hybrid solar inverter handles PV inversion and battery charge and discharge, works with stackable externally connected battery storage and can also recover waste heat from its power electronics to raise the heat pump’s COP.

A single app brings the thermal and electrical sides of the system together as a single interface for setup, operation, monitoring, and maintenance.

With hybrid solar inversion integrated at the architecture level, the heat pump can work directly with PV and battery power, reducing some of the repeated AC/DC and DC/AC conversion stages associated with separate PV, storage, and heat pump installations. The platform can potentially improve overall system efficiency by more than 10%, through direct-drive operation, combined battery and thermal storage control, and energy-management algorithms. The system also follows available solar output, responding to PV generation rather than relying only on fixed schedules or basic external control signals.

The integrated emergency power supply function switches selected household loads to backup power during outages in a 0 ms transition, with backup duration depending on connected battery capacity and site configuration. Consolidating energy conversion, storage control, power management, and system control into one platform can reduce installation time by up to an estimated 50% versus conventional multi-vendor setups.

Grid connection support is expected to cover major European standards, starting with UK’s G98/G99 and Italy’s CEI 0-21. The first range offers 12 kW, 14 kW and 16 kW heating capacities with 6 kW output, covering more than 90% of heating and power-use scenarios, with further versions planned for other residential and C&I (commercial and industrial) applications.

Differ Power will present the D1 Series at Intersolar Europe 2026, Hall C2, Booth 655.

Contact Differ Power for more information.