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The KFXRS-42 II/A Precise Pool Constant Temp Heat Pump is a high-performance air-source heat pump engineered exclusively for constant temperature control in swimming pools. Leveraging advanced air-source heat pump technology and intelligent PID temperature regulation, this machine eliminates the flaws of traditional pool heating equipment—such as excessive energy consumption, unstable water temperatures, and frequent frost issues in low-temperature environments.

Designed to serve commercial swimming pools ranging from 100㎡ to 1000㎡—including 5-star hotel indoor pools, professional sports venue competition pools, and chain gym constant-temperature pools—the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump meets the rigorous temperature requirements of both guests and athletes. Its 43.2kW heating capacity (at 20/15℃ ambient temp, 25℃ input water temp) ensures rapid temperature stabilization, while the high energy efficiency ratio (COP 6.65) significantly reduces operational costs for hotels and venues. By replacing traditional gas-fired equipment, it also minimizes safety risks such as gas leaks, aligning with modern commercial operation standards. Additionally, it supports seamless integration with pool management systems, enabling intelligent operation and remote monitoring.
For public swimming pools (50-200㎡) like primary and secondary school indoor pools and community fitness pools, the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump excels in high-frequency usage scenarios. Its robust build and super-high stability withstand concentrated use during school breaks and weekend peaks, reducing downtime impacts. The precise temperature control (25℃-28℃ for competitive use, 30℃-32℃ for general fitness) prevents colds and discomfort caused by temperature fluctuations, enhancing user safety. With a water pressure drop of 75kPa and rated water flow of 7.4m³/h, it adapts to large water volume circulation, ensuring uniform heating throughout the pool.
For luxury villa courtyards and high-end private clubs with 10-50㎡ pools, the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump offers quiet operation (only 59dB(A)) that won’t disrupt daily life, even during nighttime use. It supports mobile APP remote control and scheduled heating, allowing users to pre-set temperatures for immediate comfort upon return. The IPX4 waterproof rating and anti-corrosion coil heat exchanger (heat exchange efficiency up to 95%) withstand outdoor wind and rain, reducing maintenance frequency for long-term reliable use.
Equipped with imported platinum resistance temperature sensors (±0.1℃ measurement accuracy) and PID intelligent adjustment technology, it captures real-time water temperature data and automatically adjusts compressor power and water flow.
Symmetrical heating design ensures uniform water temperature distribution, with dedicated temperature ranges for competitive (25℃-28℃), fitness (30℃-32℃), and rehabilitation (34℃-36℃) scenarios.
Proven in real-world applications: 8 units maintained 26.5℃±0.3℃ for 15 consecutive days at a Shanghai international swimming event center, meeting FINA standards.
Boasts an impressive COP of 6.65 (at 20/15℃ ambient temp), converting 1kW of electrical energy into 6.65kW of heat energy, reducing energy costs by 50%+ compared to traditional electric heaters.
Utilizes waste heat recovery technology to absorb free heat from the air, minimizing energy waste and lowering carbon emissions.
Supports time-based temperature settings, automatically reducing water temperature during non-use periods to optimize energy consumption.
Adopts updated anti-corrosion materials for key components, resisting pool water corrosion and extending service life in harsh environments.
Integrated intelligent protection system (overload, overheating, water shortage protection) prevents equipment damage and ensures safe operation.
Easy repair design with accessible components simplifies maintenance, reducing downtime and repair costs for commercial users.
As a professional system energy solution provider, we offer end-to-end customized services for the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump:
System integration: Tailor heating systems based on pool size, location, and usage frequency, compatible with commercial HVAC and building management systems.
Intelligent linkage: Support connection with IoT platforms for remote monitoring, data analysis, and automatic fault alerts.
Professional installation & commissioning: A team of certified technicians ensures proper setup and optimal performance.
Comprehensive after-sales support: 24/7 technical consultation, regular maintenance, and spare parts supply to guarantee long-term stable operation.
The KFXRS-42 II/A Precise Pool Constant Temp Heat Pump is a high-performance air-source heat pump engineered exclusively for constant temperature control in swimming pools. Leveraging advanced air-source heat pump technology and intelligent PID temperature regulation, this machine eliminates the flaws of traditional pool heating equipment—such as excessive energy consumption, unstable water temperatures, and frequent frost issues in low-temperature environments.

Designed to serve commercial swimming pools ranging from 100㎡ to 1000㎡—including 5-star hotel indoor pools, professional sports venue competition pools, and chain gym constant-temperature pools—the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump meets the rigorous temperature requirements of both guests and athletes. Its 43.2kW heating capacity (at 20/15℃ ambient temp, 25℃ input water temp) ensures rapid temperature stabilization, while the high energy efficiency ratio (COP 6.65) significantly reduces operational costs for hotels and venues. By replacing traditional gas-fired equipment, it also minimizes safety risks such as gas leaks, aligning with modern commercial operation standards. Additionally, it supports seamless integration with pool management systems, enabling intelligent operation and remote monitoring.
For public swimming pools (50-200㎡) like primary and secondary school indoor pools and community fitness pools, the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump excels in high-frequency usage scenarios. Its robust build and super-high stability withstand concentrated use during school breaks and weekend peaks, reducing downtime impacts. The precise temperature control (25℃-28℃ for competitive use, 30℃-32℃ for general fitness) prevents colds and discomfort caused by temperature fluctuations, enhancing user safety. With a water pressure drop of 75kPa and rated water flow of 7.4m³/h, it adapts to large water volume circulation, ensuring uniform heating throughout the pool.
For luxury villa courtyards and high-end private clubs with 10-50㎡ pools, the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump offers quiet operation (only 59dB(A)) that won’t disrupt daily life, even during nighttime use. It supports mobile APP remote control and scheduled heating, allowing users to pre-set temperatures for immediate comfort upon return. The IPX4 waterproof rating and anti-corrosion coil heat exchanger (heat exchange efficiency up to 95%) withstand outdoor wind and rain, reducing maintenance frequency for long-term reliable use.
Equipped with imported platinum resistance temperature sensors (±0.1℃ measurement accuracy) and PID intelligent adjustment technology, it captures real-time water temperature data and automatically adjusts compressor power and water flow.
Symmetrical heating design ensures uniform water temperature distribution, with dedicated temperature ranges for competitive (25℃-28℃), fitness (30℃-32℃), and rehabilitation (34℃-36℃) scenarios.
Proven in real-world applications: 8 units maintained 26.5℃±0.3℃ for 15 consecutive days at a Shanghai international swimming event center, meeting FINA standards.
Boasts an impressive COP of 6.65 (at 20/15℃ ambient temp), converting 1kW of electrical energy into 6.65kW of heat energy, reducing energy costs by 50%+ compared to traditional electric heaters.
Utilizes waste heat recovery technology to absorb free heat from the air, minimizing energy waste and lowering carbon emissions.
Supports time-based temperature settings, automatically reducing water temperature during non-use periods to optimize energy consumption.
Adopts updated anti-corrosion materials for key components, resisting pool water corrosion and extending service life in harsh environments.
Integrated intelligent protection system (overload, overheating, water shortage protection) prevents equipment damage and ensures safe operation.
Easy repair design with accessible components simplifies maintenance, reducing downtime and repair costs for commercial users.
As a professional system energy solution provider, we offer end-to-end customized services for the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump:
System integration: Tailor heating systems based on pool size, location, and usage frequency, compatible with commercial HVAC and building management systems.
Intelligent linkage: Support connection with IoT platforms for remote monitoring, data analysis, and automatic fault alerts.
Professional installation & commissioning: A team of certified technicians ensures proper setup and optimal performance.
Comprehensive after-sales support: 24/7 technical consultation, regular maintenance, and spare parts supply to guarantee long-term stable operation.
It precisely maintains pool water within a ±0.5℃ range, far exceeding the industry average of ±1℃, and operates efficiently across an ambient temperature range of -15℃ to 45℃. Whether for large-scale commercial venues or high-demand public facilities, the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump delivers reliable, energy-saving, and consistent temperature control to unlock year-round comfortable swimming experiences.
Model: KFXRS- | 21Ⅱ/C | 42Ⅱ/A | 55Ⅱ/A | 76Ⅱ/A | 95Ⅱ/A | |
| Ambient Temp.(DB/WB):20/15℃; Water Temp.(Input):25℃ | ||||||
Heating Capacity | kW | 22.50 | 43.2 | 59.6 | 85.0 | 103.0 |
Heating Power Input | kW | 3.45 | 6.50 | 8.90 | 12.80 | 15.50 |
COP | W/W | 6.52 | 6.65 | 6.70 | 6.64 | 6.65 |
Power Supply | 380V 3N~50Hz | |||||
Ambient Temp.(DB/WB):43/26℃; Water Temp.(Output):55℃ | ||||||
Max. Power Input/Current(Water Temp.(Out)55℃) | kW/A | 7.3/12.5 | 15.0/27.0 | 20.0/35.8 | 30.0/54.0 | 35.8/67.0 |
Max. Power Input/Current(Water Temp.(Out)45℃) | kW/A | 6.2/11.5 | 12.0/22.5 | 16.5/30.6 | 24.0/45.0 | 30.5/56.6 |
Rated Water Flow | m3/h | 3.9 | 7.4 | 10.2 | 14.6 | 17.7 |
Water Pressure Drop | kPa | 45 | 75 | 80 | 85 | 75 |
Operation Ambient Temperature | ℃ | -15~45 | ||||
Body size(L×W×H) | mm | 1153×480×1100 | 1450×850×1390 | 1900×950×2080 | 1900×950×2225 | |
Water-Proof Grade | IPX4 | |||||
Anti-Electric Shock Rate | Ⅰ | |||||
Noise | dB(A) | 60 | 59 | 65 | 67 | 68 |
Diameter of Pipe | mm | DN25 | DN40 | DN40 | DN50 | DN65 |
| Thread | ||||||
Net Weight | kg | 130 | 320 | 380 | 550 | 750 |
Refer to Standard JB/T11969-2014 Swimming Pool Air source Hot Water Heat Pump.
It precisely maintains pool water within a ±0.5℃ range, far exceeding the industry average of ±1℃, and operates efficiently across an ambient temperature range of -15℃ to 45℃. Whether for large-scale commercial venues or high-demand public facilities, the KFXRS-42 II/A Precise Pool Constant Temp Heat Pump delivers reliable, energy-saving, and consistent temperature control to unlock year-round comfortable swimming experiences.
Model: KFXRS- | 21Ⅱ/C | 42Ⅱ/A | 55Ⅱ/A | 76Ⅱ/A | 95Ⅱ/A | |
| Ambient Temp.(DB/WB):20/15℃; Water Temp.(Input):25℃ | ||||||
Heating Capacity | kW | 22.50 | 43.2 | 59.6 | 85.0 | 103.0 |
Heating Power Input | kW | 3.45 | 6.50 | 8.90 | 12.80 | 15.50 |
COP | W/W | 6.52 | 6.65 | 6.70 | 6.64 | 6.65 |
Power Supply | 380V 3N~50Hz | |||||
Ambient Temp.(DB/WB):43/26℃; Water Temp.(Output):55℃ | ||||||
Max. Power Input/Current(Water Temp.(Out)55℃) | kW/A | 7.3/12.5 | 15.0/27.0 | 20.0/35.8 | 30.0/54.0 | 35.8/67.0 |
Max. Power Input/Current(Water Temp.(Out)45℃) | kW/A | 6.2/11.5 | 12.0/22.5 | 16.5/30.6 | 24.0/45.0 | 30.5/56.6 |
Rated Water Flow | m3/h | 3.9 | 7.4 | 10.2 | 14.6 | 17.7 |
Water Pressure Drop | kPa | 45 | 75 | 80 | 85 | 75 |
Operation Ambient Temperature | ℃ | -15~45 | ||||
Body size(L×W×H) | mm | 1153×480×1100 | 1450×850×1390 | 1900×950×2080 | 1900×950×2225 | |
Water-Proof Grade | IPX4 | |||||
Anti-Electric Shock Rate | Ⅰ | |||||
Noise | dB(A) | 60 | 59 | 65 | 67 | 68 |
Diameter of Pipe | mm | DN25 | DN40 | DN40 | DN50 | DN65 |
| Thread | ||||||
Net Weight | kg | 130 | 320 | 380 | 550 | 750 |
Refer to Standard JB/T11969-2014 Swimming Pool Air source Hot Water Heat Pump.