Designed for minimalist architecture, the Built-in Wall Hybrid ACO delivers efficient low-temperature heating and gentle, non-condensing cooling — all discreetly recessed into the wall. With only a slim grille visible, it preserves clean interior lines while providing year-round comfort.

Engineered to work seamlessly with modern heat pumps, the Hybrid ACO operates at very low water temperatures, improving seasonal system efficiency and reducing energy consumption. When cooling is available, the unit automatically switches between heating and light cooling using intelligent room and water temperature sensors — no manual intervention required.

Developed by the designers of the first low-temperature heater, the Hybrid ACO combines quiet performance, smart control, and architectural integration in one compact solution.

• Wall-recessed design for a clean, minimal aesthetic

• Low-temperature heating optimised for heat pump systems

• Energy-efficient, non-condensing cooling when supplied with cooling water

• Automatic changeover (ACO) between heating, cooling, and standby

• Improves seasonal efficiency of heat pumps and boilers

• Ultra-quiet operation

  • Bedroom mode: max. 26 dB(A)

  • Comfort mode: max. 30 dB(A)

• Three operating positions:

  • Bedroom (silent)

  • Comfort (balanced performance)

  • Maximum (rapid heating or cooling)

• Integrated room and water temperature sensors — no user input required

• Breeze function: fan-assisted air movement without chilled water

• Discreet grille-only visibility once installed