MONO PLUS 090 1PH is the optimal solution for medium-sized single-family houses with an area of approximately 110-150 m2. This model is equipped with a premium Mitsubishi inverter compressor with EVI technology , which ensures reliable operation at extremely low outdoor temperatures and a stable heat capacity of 9.40 kW in standard mode A7/W35. The balance between power, efficiency and quiet operation makes it one of the most sought-after single-phase models in the series.
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Operation in heating and cooling modes
Built-in
Wi-Fi module
Efficient operation thanks to high COP
Effective operation
down to -25°C
SG Ready function
SUNSYSTEM MONO PLUS is a new generation of air-to-water inverter monoblock heat pumps, developed with the environmentally friendly refrigerant R32 (with low global warming potential). The series is designed to fully cover the heating , cooling and domestic hot water (DHW) needs of single-family houses and residential buildings, using renewable energy from the outside air.
The heart of the heat pump is a highly efficient inverter compressor with EVI technology (Enhanced Vapour Injection – direct injection of steam into the compressor), which guarantees stable and efficient operation even at extremely low outdoor temperatures – down to -25°C . This makes MONO PLUS a suitable solution for all climate zones in Bulgaria and Europe.
► Energy class: A+++ (at A7 / W35)
► Operating range of external temperature: from -25°C to +43°C
► Refrigerant: R32 (environmentally friendly, low GWP)
► Technology: full DC inverter + EVI compressor
► Power supply: single-phase 220-240V ~ / 50Hz
► Maximum coolant temperature: 60°C
► DHW production: up to 55°C
► Built-in Wi-Fi module – full control via smartphone from anywhere
► SG Ready function – compatibility with Smart Grid and photovoltaic systems to optimize self-consumption
► 4-inch color touch screen display with intuitive navigation
► Built-in energy-saving circulation pump – no need for an external
► Built-in expansion tank – 2 liters
► Additional electric heater: 3 kW (built-in)
► Protection class: IPX4
► Heat transfer fluid connections: G 1 1/4″
► Freon – water heat exchanger: plate
► Evaporator: finned heat exchanger

► Double-sided operation in heating and cooling mode
► High COP – low operating costs and quick payback
► Efficient operation in extreme temperatures down to -25°C thanks to EVI
► Smart Grid (SG Ready) and photovoltaic installations readiness
► Wi-Fi control via mobile app
► Quiet operation – suitable for densely built-up residential areas
► Compatible with underfloor heating , radiators and fan coils
► Simultaneous heating, cooling and DHW production
The MONO PLUS single-phase models are designed for objects with domestic single-phase power supply - single-family houses, apartments with autonomous heating, small offices, villas, etc. The choice of a specific model depends on the heated area, the level of thermal insulation and the type of heating installation (underfloor, radiators or combined).
| Characteristics | |
| Approximate surface (m²) | 150 |
| Connections | G 1 1/4″ |
| Flow rate (m³/h) | 1.6 m³/h |
| Volume of the built-in expansion tank [L] | 2 |
| Тегло (kg) | 107.0000 |
| Protection class | IPX4 |
| Dimensions [mm] | 1263х440х875 |
| Nominal thermal power (kW) | 9.4 |
| Energy efficiency class | A+++ |
| Circulation pump included | Yes |
| Operating temperature range (°C) | от -25°C до +43°C |
| Voltage [V] | 220-240V ~ / 50Hz |
| Refrigerant | R32 |
| Compressor | Mitsubishi |
| Sound pressure dB(A) | 50 |
| Type | File Information |
| Heat_Pump_Sunsystem_Manual_EN.pdf File size 4.28MB |