To reduce carbon emissions and address global warming, Dentwiton has developed an R290 full DCinverter air-to-water heat pump solution.

Compared with conventional refrigerants, R290 offers significant environmental advantages. 

While R410A has a GWP of around 2100 and R32 approximately 675, R290 features an ultra-low 

GWP of just 3. With minimal environmental impact and excellent thermodynamic performance, 

R290 is widely recognized as one of the most promising and environmentally friendly natural refrigerants.

R290 Monobloc Series – Key Features Summary 

The R290 Monobloc Series residential heat pump is designed for high efficiency, reliable operation, a

nd smart energy management, making it ideal for both new buildings and retrofit applications.

Performance & Efficiency

♙ Reliable operation in extreme climates, functioning stably down to –28°C ambient temperature

♙ Powerful heating performance with hot water outlet temperature up to 75°C

♙ Full DC inverter technology for precise control and high efficiency

♙ SCOP up to 4.70 and ErP energy class A+++, delivering 50–75% energy savings compared to 

conventional heating systems

♙ Dual electronic expansion valve(EEV)  design for enhanced refrigerant control and stable operation under varying load conditions

♙ High-efficiencydouble-tube heat exchanger to increase heating capacity and improve  overall system efficiency

Acoustic & Comfort

♙ Ultra-low noise operation, with sound pressure levels below 43 dB(A)

♙ Intergrated noise-reduction design, including DC fan motor and optimized air duct system

Installation & System Design

♙ Monobloc design for fast and easy installation with water-side connection only

♙ Supports cascade connection of up to 8 units, suitable for larger residential or light commercial 

applications

Smart Control & Connectivity

♙ Integrated Wi-Fi and RS485 communication support

♙ IoT-based remote monitoring system for real-time data access, reducing maintenance time and 

service costs

♙ 5-inch LCD controller with SG-Ready and PV-Ready functions for smart grid and photovoltaic 

integration, further reducing heating costs

Safety & Compliance

♙ Equipped with a ventilation valve to ensure enhanced operational safety

♙Certified  in accordance with major European standards,inclding CE, ErP A+++, SG-Ready, Keymark, and MCS

♙ Officially listed on the German BAFA subsidy list, supporting eligibility for government incentives

Customization Options

♙   Customizable appearance options, including color selection, to support customer branding requirements

Preferred Components

High-Efficiency Finned Heat Exchanger

Hydrophilic coating version. It offers excellent drainage, greater resistance to salt spray and oxidation, and is less prone to frost formation in winter.

Plate Heat Exchanger
Counter-current heat exchange between refrigerant and water for better heat exchange performance.

Brushless DC Inverter Motor
Stepless frequency conversion, low noise, smoother operation, and lower power consumption; can operate continuously for approximately 20,000 hours.

DC Inverter Water Pump:
Compact size, high water flow rate, low power consumption, low noise, DC voltage power supply, no leakage risk, and longer service life than ordinary pumps.

High-Voltage DC Inverter 
Compressor: Compared to ordinary compressors, under ultra-low temperature conditions, the inverter compressor increases capacity by 10%-30% and energy efficiency by 10%-20%.

Multi-Layer Noise Reduction Technology
Through an independent compressor chamber design and dedicated three-layer sound insulation cotton, noise reduction is significantly improved.