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| The commercial low-temperature air source heat pump is designed for large-scale heating projects in cold-climate regions. It absorbs heat from outdoor air and transfers it to a central water system, providing stable space heating, and domestic hot water for hotels, schools, factories, office buildings and other commercial facilities. With EVI technology, high-efficiency heat exchange and intelligent control, the unit can operate reliably even under low ambient temperatures. It can be connected with fan coil units, floor heating, radiators, air handling units or water tanks, helping users improve indoor comfort while reducing energy consumption and long-term operating costs. | |||||||||
NL-PG90Y/R32
Nulite New Energy
The NULITE R32 Full Inverter Pool Heat Pump is a high-efficiency heating and cooling solution designed for residential and commercial swimming pools. Using eco-friendly R32 refrigerant, it features full inverter technology and a twin-rotary DC inverter compressor for stable, energy-saving operation and precise temperature control. Equipped with WiFi control, it allows convenient remote management and a smarter user experience. With a wide operating range from -12°C to 43°C, plus a spiral titanium tube heat exchanger in PVC for reliable pool water heating, the PGY series delivers efficient performance, long-term durability, and year-round swimming pool comfort.
This heat pump features PV DC direct-drive technology. The photovoltaic system’s DC output drives the compressor directly without inverters or batteries for optimal solar utilisation. It delivers up to 90% energy savings under ample daytime sunlight, with an overall saving of around 60%. Grid and PV power switch seamlessly: PV power is used first, and grid power automatically supplements any PV power deficit.
- Low tariff signal: Unit triggers boost mode to bank heat in the DHW tank.
- Normal tariff signal: High‑efficiency operation for balanced heating capacity and power use.
- High tariff signal: Limited runtime; space heating function only.
The PGY R32 pool heat pump uses full inverter technology to automatically adjust compressor and fan speed according to actual pool demand. This helps reduce unnecessary energy consumption, maintain stable water temperature and improve overall operating efficiency.
Designed for year-round swimming pool temperature control, the PGY series supports both heating and cooling functions. It can operate reliably in ambient temperatures from -12°C to 43°C, helping maintain comfortable pool water conditions across different seasons.
The PGY series uses R32 refrigerant, offering good thermodynamic performance and lower environmental impact compared with many traditional refrigerants. It supports efficient heat transfer while helping meet modern energy-saving and environmental requirements.
Equipped with a twin-rotary DC inverter compressor, the heat pump delivers smooth and stable operation under changing load conditions. This helps reduce frequent start-stop cycles, improve temperature control and support long-term reliable performance.
The unit uses a spiral titanium tube heat exchanger in PVC, specially designed for swimming pool water circulation. Titanium provides excellent corrosion resistance and dependable heat transfer performance, making it suitable for long-term pool heating and cooling applications.
Built-in WiFi control allows users to monitor and manage pool temperature remotely through a compatible smart control system. It makes daily operation more convenient and provides flexible temperature management for residential and commercial swimming pool projects.
The unit is fitted with Modbus RTU protocol for seamless integration with building automation and energy management systems. Real-time monitoring covers key operating data such as water temperatures, compressor status, operating mode, fault codes, and energy consumption, and remote control covers on/off, mode switching, temperature setpoints, and special functions including quiet mode and legionella disinfection. Multi-unit networking enables several heat pumps to be centrally managed, and Modbus connectivity allows optimized operation in response to electricity price or PV signals. The manufacturer's register map defines which data points are available.
The NULITE PGY R32 Full Inverter Pool Heat Pump is developed with strict attention to product safety, performance, and quality control. The series is designed to meet international market requirements and supports relevant certifications and compliance standards for overseas projects.
From electrical safety and energy efficiency to product reliability and manufacturing quality, each unit is produced under standardized quality management procedures. This helps ensure stable operation, dependable long-term performance, and greater confidence for distributors, installers, and project customers.
With full inverter technology, R32 refrigerant, durable components, and professional manufacturing standards, the PGY series provides a reliable pool heating and cooling solution for residential and commercial swimming pool applications.
Experience smarter pool temperature management with the NULITE PGY R32 Full Inverter Pool Heat Pump featuring built-in WiFi control. Users can remotely monitor operating status, adjust water temperature, and manage heating or cooling settings through a compatible mobile smart control system anytime and anywhere.
Remote access makes daily pool management more convenient while reducing the need for frequent on-site adjustment. For residential pools, hotels, resorts, clubs, and other commercial swimming pool projects, WiFi control helps operators maintain a stable and comfortable water temperature with greater flexibility.
Combined with full inverter technology and efficient pool heating and cooling performance, the PGY series delivers intelligent control, convenient operation, and a better year-round swimming pool experience.
The NULITE PGY R32 Full Inverter Pool Heat Pump is engineered with a spiral titanium tube heat exchanger housed in PVC, specially designed for swimming pool water applications. Titanium offers excellent corrosion resistance, helping the heat exchanger withstand long-term exposure to treated pool water while maintaining reliable heat transfer performance.
Combined with full inverter technology and a durable outdoor design, the PGY series delivers stable and efficient heating and cooling for swimming pools throughout the year. From private residential pools to hotels, resorts, and commercial facilities, it provides a dependable solution built for long-term operation and consistent pool comfort.
The PGY R32 Full Inverter Pool Heat Pump features an optimized airflow design that supports smooth air circulation and efficient heat exchange. The carefully designed air passage helps maintain stable airflow across the heat exchanger, improving heat transfer efficiency while reducing unnecessary airflow resistance.
Combined with full inverter technology, the system can intelligently adjust compressor and fan operation according to actual pool heating and cooling demand. This helps maintain stable performance, reduce energy consumption and support quieter operation, delivering reliable year-round comfort for residential and commercial swimming pools.
PGY R32 Full Inverter Pool Heat Pump – Front & Rear View
Front View
Top Fan: Draws in ambient air and supports efficient heat exchange, helping the unit maintain stable heating and cooling performance.
Controller: Provides convenient local operation and allows users to check operating status and adjust temperature settings.
Air Heat Exchanger: The large-area finned heat exchanger improves air-side heat transfer efficiency and supports stable inverter operation.
Rear View
Water Outlet: Connects to the swimming pool circulation system and returns heated or cooled water to the pool.
Water Inlet: Allows pool water to enter the heat pump for heat exchange.
Drain Port: Helps discharge residual water during maintenance or servicing.
Power Connection Area: Provides the electrical connection point for safe and organized installation.
Service Panel: Offers convenient access to internal components for inspection and maintenance.
Ventilation Openings: Support airflow and internal heat dissipation, helping ensure reliable long-term operation.
Easy & Reliable Pool System Integration
The NULITE PGY R32 Full Inverter Pool Heat Pump is designed for easy integration into residential and commercial swimming pool circulation systems. The unit is typically installed after the circulation pump and sand filter, allowing filtered pool water to enter the heat pump for efficient heating or cooling before returning to the pool.
A properly designed water circulation system helps maintain stable flow, improve heat exchange efficiency, and support consistent pool water temperature. An optional bypass valve set can be added for more flexible flow adjustment and easier maintenance.
For best performance, the heat pump should be installed in a well-ventilated location with sufficient service clearance. Correct water inlet and outlet connection, stable circulation flow, and professional installation are recommended to ensure reliable long-term operation.
Typical System Flow
Swimming Pool → Skimmer / Main Drain → Circulation Pump → Sand Filter → PGY Pool Heat Pump → Water Treatment → Return to Pool
Private Swimming Pools
Villa & Luxury Pool Projects
Hotels & Resorts
Small Hotels and Guesthouses
Light Commercial Buildings
R32 Inverter Swimming Pool Heat Pump – Installation Case Studies
The NULITE PGY R32 Inverter Swimming Pool Heat Pump is designed for a wide range of residential and commercial swimming pool applications, delivering reliable heating and cooling performance throughout the year. With applications ranging from private residential pools and luxury villas to hotels, resorts, and commercial swimming facilities, the PGY series provides flexible solutions for different pool environments.
Featuring full inverter technology, R32 refrigerant, a titanium heat exchanger and smart WiFi control, the PGY series combines efficient operation, stable pool temperature management and convenient remote control. Its robust design and dependable performance make it a practical choice for modern swimming pool projects.
Interested in PGY installation cases or pool heating solutions for your region? Contact us for project references and professional solution consultation.
What is a commercial low-temperature air source heat pump?
A commercial low-temperature air source heat pump is designed for large heating projects in cold-climate areas. It absorbs heat from outdoor air and transfers it to a water system, providing stable space heating, and domestic hot water for hotels, schools, offices and commercial buildings.
What is the maximum outlet water temperature?
Can the heat pump operate in very cold weather?
What systems can the heat pump connect with?
How does DC inverter technology improve energy efficiency?
