Description
R290 Monoblock Heat Pump – High-Efficiency Air-to-Water System for Modern Heating
Why Choose an R290 Monoblock Heat Pump?
- Natural refrigerant R290 (propane) with a GWP100 of 0.02 under the current EU F-gas Regulation
- Monoblock design – no refrigerant handling on-site
- High efficiency (COP up to 5.3) at A7/W35
- Quiet operation suitable for residential environments
- Heating, cooling and domestic hot water from one system.
Monoblock vs Split Heat Pump: Why Monoblock?
A monoblock heat pump contains the refrigeration circuit within the outdoor unit. Standard installation connects water pipework and electrical power without on-site refrigerant connections. Installation must follow the manufacturer’s instructions and applicable local qualification and safety requirements.
Technical Highlights of Tongyi R290 Monoblock Units
- Heating capacity range: 7 kW – 20 kW
- Sound pressure: from 46 dB(A)
- Operating range: down to -25°C
- Smart control: IoT + HEMS-ready
- Compatible with PV and battery systems
R290 Heat Pump Applications
- Residential heating and cooling
- Gas-boiler replacement in existing homes, subject to heat-loss and heating-system assessment
- New-build low-energy homes
- Domestic hot water with a compatible hot-water cylinder
- PV-integrated smart energy systems
R290 Heat Pump Performance in Finland
Explore recorded operating conditions and heating-performance data from a Tongyi R290 installation in Helsinki. Read our R290 heat pump case study in Finland for the project details. Results reflect this installation and the conditions recorded.
Revolutionary and Innovative Features for Complete Control - Smart Control + Wifi
Supports Cascade System: Up to 8 units work together, sharing heating and hot water tasks.

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Tongyi heat pumps achieve the highest EU energy efficiency rating of A+++, saving you money on your energy bills.

FAQ – R290 Monoblock Heat Pump
Is an R290 monoblock heat pump safe?
Yes. Although R290 is flammable (A3), modern units are designed with strict safety standards and controlled refrigerant charge.
Who should install an R290 monoblock heat pump?
Use a suitably qualified installer familiar with R290 systems. Standard installation does not require opening the refrigerant circuit, but electrical, hydraulic and safety requirements still apply. Work on the refrigerant circuit must meet applicable training and certification requirements.
Is R290 better than R32?
R290 (propane) has an exceptionally low climate impact, with a GWP100 of 0.02 under the current EU F-gas Regulation. Older technical references may still show a GWP value of 3, based on earlier assessment methodologies.
Can it work with solar panels?
Yes. Tongyi systems are designed for PV integration and smart energy management.
Discover the unique advantages that set us apart.
From innovative solutions to unparalleled customer service, we take pride in offering you a unique experience that goes beyond the ordinary.
Explore the mechanism of an Air-to-water heat pump's operation.
An air-to-water heat pump functions by absorbing the latent thermal energy present in the air, which serves as the primary heat source. Through a refrigeration cycle, the heat pump employs a compressor to increase the captured heat’s temperature and transfers it to a water-based system. This heated water can then be utilized for space heating, as well as domestic hot water production.































