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| 7.5kW–9.5kW R290 DC Inverter All In One Heat Pump NULITE R290 DC Inverter All In One Heat Pump is an integrated solution designed for heating, cooling and domestic hot water applications. With 7.5kW and 9.5kW heating capacity options, the series is suitable for villas, apartments, energy-efficient homes and modern residential projects. Powered by full DC inverter technology and Panasonic R290 inverter compressor, the system intelligently adjusts output according to actual demand, achieving efficient operation, stable comfort and lower energy consumption. With reliable operation down to -25°C and hot water temperature up to 75°C, it provides stable heating and hot water performance in cold climates. Featuring an integrated 90L stainless steel water tank, 2kW auxiliary electric heater and high-efficiency components, the all-in-one design simplifies installation and saves space. Supporting heating, cooling and DHW functions, it can be flexibly connected with floor heating, radiators and fan coil systems. With Wi-Fi, RS485 and smart control functions, NULITE R290 Polar X Series provides convenient operation and an energy-saving solution for modern residential comfort. Key Features - 7.5kW & 9.5kW Heating Capacity Options - Natural R290 Refrigerant - Panasonic DC Inverter Compressor - 75°C High Temperature Hot Water - -25°C Low Temperature Operation - Integrated 90L Stainless Steel Water Tank - Heating, Cooling & DHW Function - Wi-Fi, RS485 & Smart Control | |||||||||
NL-B245II/R290
Nulite New Energy
The NULITE R290 DC Inverter Monoblock Heat Pump is a high-efficiency, all-in-one solution for residential and light commercial use, combining heating, cooling and domestic hot water. Using eco-friendly R290 refrigerant, it features DC inverter and EVI compressor technology for stable, efficient operation down to -25°C, with hot water up to 75–80°C. It supports WiFi control, SG Ready integration, and works with underfloor heating, fan coils, radiators and DHW tanks. Its monoblock design and integrated hydraulics offer efficiency, comfort, intelligent control and cold-climate performance for modern heating applications.
All-in-One Heating, Cooling & DHW Solution
The R290 Polar X Series combines space heating, cooling and domestic hot water in one compact household unit. It can serve floor heating, radiators, fan coil units and shower hot water, helping homeowners reduce separate equipment, save installation space and enjoy year-round comfort from one integrated system.
Eco-Friendly R290 Refrigerant
Using natural R290 refrigerant, this heat pump offers a more environmentally friendly solution for modern low-carbon homes. R290 has excellent thermodynamic performance and helps the system deliver efficient heating and hot water output while meeting growing market demand for greener, future-ready heating and cooling products.
Panasonic DC Inverter EVI Compressor
The unit is equipped with a Panasonic DC inverter EVI compressor, designed for stable operation and strong low-temperature heating performance. The inverter technology adjusts output according to real demand, helping reduce energy waste, improve comfort, lower running noise and maintain reliable performance even in cold climates.
Smart Control & SG Ready Function
The heat pump supports Wi-Fi control, touch screen control, RS485 communication, 3-way valve signal connection and SG Ready function. Users can manage heating, cooling and hot water more conveniently, while SG Ready makes the system better prepared for smart grid and energy-saving residential applications.
CE & DOC Certified Quality
The NULITE R290 Polar X Series complies with European market requirements through CE certification and Declaration of Conformity (DOC). These certifications demonstrate the product’s focus on safety, reliability and quality control, providing customers with greater confidence for residential heating, cooling and domestic hot water applications.
Third-party thermostats can be applied to operate the heat pump. Based on the Nulite controller configuration, one or multiple zones can be controlled by third-party thermostats, giving clients the ability to easily turn the unit on/off or switch operating modes.
Built with high-quality galvanized sheet metal, the unit features excellent corrosion resistance and structural durability for long-term outdoor operation. The robust housing helps protect internal components from harsh weather conditions, reducing maintenance needs and ensuring reliable performance throughout the product lifetime.
Equipped with EVI technology, the heat pump improves heating capacity and operational stability in low-temperature environments. By enhancing refrigerant circulation under cold conditions, it helps maintain reliable heating performance during winter, providing homeowners with consistent indoor comfort even when outdoor temperatures drop.
Low tariff signal: The unit activates boost mode to store heat in the DHW tank.
Normal tariff signal: High-efficiency operation to balance heating capacity output and power input.
High tariff signal: Limited operating time; space heating only.
Equipped with Modbus RTU protocol, the unit integrates seamlessly with building automation and energy management systems. It enables real-time monitoring of key operating data—water temperatures, compressor status, operating mode, fault codes, and energy consumption—plus remote control of on/off, mode switching, temperature setpoints, and special functions like quiet mode and legionella disinfection. Multi-unit networking supports centralized management of multiple heat pumps.Clients can integrate heat pumps into their own control systems for remote monitoring and control.
Equipped with a built-in 90L buffer tank and 2 kW electric heater, the heat pump provides a more compact and convenient system solution. The integrated design helps simplify installation, improve system stability, and ensure reliable heating performance during peak demand periods, offering homeowners greater comfort and flexibility.
The advanced touchscreen controller supports multiple languages, enabling easy operation for global users. With a clear interface and smart temperature management, it provides convenient control of heating, cooling, and domestic hot water functions for a comfortable living environment.
Site Preparation & Unit Placement
Choose a well-ventilated outdoor location with enough space for air inlet, air outlet and maintenance access. Place the R290 inverter air source heat pump on a flat concrete base or anti-vibration bracket. Keep the unit stable, level and away from enclosed or poorly ventilated areas.
Water Pipe Connection
Connect the heat pump to the buffer tank, domestic hot water tank, floor heating, radiators or fan coil system according to the project design. Make sure the water inlet and outlet are connected correctly. Pipe insulation is recommended to reduce heat loss and improve heating efficiency.
Residential Houses
Cold Climate Regions
Villas and Large Homes
Small Hotels and Guesthouses
Light Commercial Buildings
R290 DC Inverter Air-Source Heat Pump – Installation Case Studies
The NULITE R290 DC Inverter Air Source Heat Pump has been successfully installed in over 80 countries worldwide, supporting a wide range of residential and commercial applications. With proven projects across European markets such as Slovakia, Hungary, Czech Republic, Austria, Spain, and Italy, these systems provide reliable heating, cooling, and domestic hot water solutions tailored to different climate conditions. NULITE continues to deliver efficient and flexible heat pump solutions worldwide with advanced technology and dependable performance.
Interested in installation cases from your region? Contact us for localized project references and professional solution support.
Can this R290 air source heat pump provide heating, cooling and domestic hot water?
Yes. The R290 Polar X Series is an all-in-one heat pump designed for space heating, cooling and domestic hot water. It can provide year-round comfort for residential homes and reduce the need for separate heating, cooling and water heating equipment.
What is the maximum hot water temperature of this heat pump?
Can it connect to existing heating and cooling systems?
Is this heat pump suitable for cold climates?
Does it support smart control and energy-saving functions?
