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41-72KW -25℃ EVI Air to Water Low Temperature Heat Pump Heating Cooling

1. High Cop: 3.34/3.36

2. Power Supply: 380V~415V/50Hz/3ph

3. Running temp: -25℃-45℃

4. Heating: 55℃ (Max Water Temp)

5. Cooling: 10℃(Min Water Temp)

6. Heating Capacity: 41/56/72KW

7. Cooling Capacity: 34.9/47.6/61.2KW
  • CGK/D-52(LHC) CGK/D-72(LHC) CGK/D-95(LHC)


Heat Pump Features

EVI Air to Water Low Temperature Heat Pumps

SPRSUN EVI air source heat pumps are designed for domestic/commercial house heating and cooling in cold areas where lowest air temperature is above -25℃.

● Efficient and Energy-saving 

Air source heat pumps absorb hot energy from the air freely, and the electricity is only used to drive the compressor to pump up the heat from the air. So, it consumes just a quarter of traditional electric heaters, saving a lot of electric costs for users.  

 Green and Environmental Protection

By using air hot energy and electric energy, there is no harmful gas being discharged during the operation of heat pumps. 

● Usable All-weather

All weather operation: stable operation without being influenced by any windy, rainy or snowy weather. 

● Endurable 

The Enhanced Vapor Injection (EVI) technology from Copeland compressor with crankcase heater for special cold area, Danfoss electronic expansion valve, Eaton AC contactor and thermal relay and other brand components of the heat pump guarantee high quality and a long lifespan. All of our screws and clips (both external and internal) are stainless steel. The cabinets we are using are made of GALVANIZED STEEL, making them more rust resistant, durable and affordable. 

● Multiple Protections

For example, if water flow is not enough in the system, the system will show high pressure protection and stop the heat pump automatically to protect the compressor from being damaged. Also, there is high current protection: if the power supply is not stable, the heat pump will show the high current error to stop the heat pump and avoid compressor damage.

● Linkage Function

External signal on/off function

● Guaranteed Safety

Complete isolation of water and electricity avoids electric shock, explosion and poisoning; LCD screen digital controller for automatic operation

● Convenient

The EVI heat pump is easy to install in many places, such as garage, balcony, kitchen, etc

Heat Pump Specification

Power supply V 380V~415V/50Hz/3ph
Refrigerant R407C R410A
Heating capacity KW 41 56 72
Input power of heating KW 12.28 16.67 21.43
3.34 3.36 3.36
Cooling capacity KW 34.9 47.6 61.2
Input power of cooling KW 12.67 17.37 22.25
2.75 2.74 2.75
Rated current A 23.3 31.7 40.7
Max current A 32.6 44.3 57.0
Fan motor power W 330 800 1100
Fan motor quantity Piece 2 2 2
Water flow L/h 7873 10700 13758
Water pressure drop Kpa ≤60 ≤62 ≤65
Net weight kg 380 482 580
Gross weight kg 400 506 612
Noise db 68 72 75
Classification of waterproof IPX4
Electric shock proof grade I
Pipe size (internal thread) mm 40 50 65
Dimension mm 1500*800*1515 1850*1000*1950 2000*1100*2080
Packing dimension mm 1580*880*1665 1940*1120*2180 2050*1150*2230
Compressor model/quantity ZW79KSE*2 ZW108KSE*2 PSH034*2
  • Rated working condition: 

- Heating: air temp (DB/WB): 7℃/6℃; water temp (inlet/outlet): 40℃/45℃;

- Cooling: air temp(DB/WB): 35℃/24℃, water temp (inlet/outlet): 12℃/7℃.

Heat Pump Application

EVI air source heat pumps are designed for house heating and cooling. User can change the working mode by operating the wired panel of the controller. Compressor starts/stops according to return water temperature. When all rooms reach preset temperature by room thermostat, the heat pump will be turned off through linkage switch.

Wide Range of Applications: these EVI low temperature heat pumps could meet the heating and cooling requirements of different places, such as villas, houses, schools, factories, hotels, hospitals, spa centers, sauna centers, greenhouses, flower gardens, farms, etc. 

Application of EVI Air to Water Heat Pumps

Why can SPRSUN EVI heat pumps work at -25℃? 

Because of the Enhanced Vapor Injection (EVI) technology from Copeland compressor with crankcase heater for special cold areas, SPRSUN designed EVI gas piping system and controlling system make EVI air source heat pumps work stably in the low temperature condition. 

Why Can EVI Heat Pumps Work in Cold Climate

Heat Pump Components

Our EVI air to water heat pumps adopt high quality components, such as Copeland enhanced vapour injection (EVI) technology compressor, Danfoss electronic expansion valve and Eaton AC contactor and thermal relay. 

Materials of EVI Air to Water Low Temperature Heat Pumps

Heat Pump Installation Diagram

It is easy to install SPRSUN EVI air to water heat pumps, shown as the following Installation Diagram:

 Installation Diagram of SPRSUN EVI Air to Water Low Temp Heat Pumps

Heat Pump COP

The COP of SPRSUN EVI Air Source Heat Pumps under Different Working Conditions:

Air temp ℃                                   Hot water temp ℃

W35  W45 W55
-25 2.21 1.85 1.50
-20 2.49 2.08 1.69
-12 2.89 2.41 1.97
-7 3.25 2.62 2.21
2 3.65 2.95 2.48
7 4.15 3.35 2.82
12 4.52 3.72 3.13
20 5.07 4.28


Heat Pump Workmanship


We care every detail on what you need!

Super Low Noise: Fitted cut clothes for compressor and strong pads to avoid vibration

Anti-corrosion: Aluminum edging                         

Exellent Welding Guarantee No Leakage: Four-way valve welding protection  

Low Noise EVI Air to Water Low Temp Heat Pumps

Energy Saving: 30mm thickness for insulation to prevent energy lost

User-friendly Design: Ram design using machine wire

Reliability of the Connection: Adopt automatic stamping machine from Taiwan

Energy Efficient EVI Air to Water Low Temp Heat Pumps

Heat Pump Models

Related models are as below:

Models of EVI Air Source Heating and Cooling Heat Pumps

Heat Pump Technical Support

Our experienced engineering team provides good support for any questions concerning the products and installation before, during and after products are sold. 

Before Selling

  • Set up customers file and arrange professional sales engineers to introduce company products and services to customers in details.

  • If customers are interested in our products, we will send professional technicians to survey the installation environment.

  • Provide solutions according to different customers' requirements.

During Selling

  • Machine installed and tested by QA engineers.

  • Ensure all the products we provide are qualified and new. The working life of the main engine is 15 years.

  • Construct and install the heat pump according to national relevant policies strictly and ensure high quality delivery on time.

  • Test and debug the equipments strictly to ensure the safety and stability.

  • During the delivery, provide comprehensive and professional technical training on instructions and maintenance to customers.

After Selling

  • We promise to offer free consulting call in 7×24 hours mode to solve the problems found in practice. The number is 86-20-82181867.

  • Sprsun offers 18-month long warranty. Within 18 months since the delivery date, if the product has any failure under normal usage, Sprsun will provide free assembly parts.

  • After the expiration of the warranty period, we will continue to provide lifelong maintenance services, with just a small amount of charges.

Contact Us

Guangzhou SPRSUN New Energy Technology Development Co., Ltd.

A Professional Heat Pump Manufacturer Since 1999
No.15 Tangxi Road, Yinsha lndustrial Park, Xintang, Zengcheng , Guangzhou, Guangdong, China, 511338

Contact SPRSUN. 7/24 Support. We Will Reply You ASAP!

Tel: 0086-20-82181867
Phone: 0086-18933985692