The Chinese manufacturer said its new airMono indoor monoblock heat pump is tailor-made for urban renovations with limited space, providing heating, cooling and domestic hot water without an outdoor unit. The system’s coefficient of performance ranges from 2.5 to 4.1, while the seasonal coefficient of performance is 4.5 to 4.7.
Chinese heat pump manufacturer Phnix has launched airMono, an indoor monoblock heat pump designed for urban renovations with limited space and multi-storey residential buildings.
The system is built entirely indoors, so no outdoor unit is required. It provides heating, cooling and hot water for domestic use, addressing a major barrier to heat pump adoption in Europe, where dense urban layouts and historic building restrictions often limit installation options.
“As the EU’s ‘Renovation Wave’ aims to upgrade 35 million building units by 2030, and national programs such as the UK Boiler Upgrade Scheme (BUS) and Germany’s Building Energy Act (GEG) accelerate the phase-out of fossil fuel boilers, heat pumps have become the clear way forward. Yet many historic houses, townhouses and mid-terrace homes face a common obstacle: a lack of space for large outdoor units,” the company said in a statement statement.
The airMono features a three-way airflow design, allowing installers to adjust the direction of airflow to suit the building layout and maximize flexibility in tight spaces, the company said. It uses propane (R290) as a refrigerant and includes a gas separator and leak detector for greater safety.
The heat pump is offered in two versions, with nominal capacities ranging from 3.2 kW to 4.8 kW and a heating power from 820 W to 1.1 kW. The coefficient of performance (COP) ranges from 2.5 to 4.1, while the seasonal COP (SCOP) is 4.5 to 4.7.
In terms of dimensions, the smaller model measures 598 × 495 × 725 mm and weighs 73 kg, while the larger version measures 598 × 615 × 1,200 mm and weighs 124 kg. The operating noise level is between 58 dB and 61 dB, suitable for indoor installation.
Phnix said the system is designed for easy maintenance, with quick-access panels on the front, left and right sides that give technicians direct access to core piping and electrical components without moving the unit, reducing service time and costs. The airMono also integrates smart connectivity including built-in Wi-Fi, compatibility with the Hitemp smartphone app and seamless integration with IoT platforms for remote monitoring and management.
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