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You are here: Home » Products » Heat Pumps for Heating and Cooling » 20P -25℃ EVI Air to Water Low Temp Heat Pump Heating and Cooling
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20P -25℃ EVI Air to Water Low Temp Heat Pump Heating and Cooling

1. High Cop:3.36

2. Power Supply: 380V

3. Running Temp: -25℃-45℃

4. Heating: 50℃ (Max Water Temp)

5. Cooling: 8℃ (Min Water Temp)

6. Heating Capacity: 60KW

7. Cooling Capacity: 54KW

  • CGK/D-72(LHC)

Features of EVI Heat Pumps

EVI Air to Water Low Temperature Heat Pumps

EVI air source heat pumps (heating and cooling) are designed for house heating and cooling 

in cold climate 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. R407C refrigerant guarantees fluoride-free emission. 

● 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 Controller and Protection

High pressure, low pressure, overheating, overload anti-freezing, phase sequence, discharge temperature, suction temperature and so on.

Controlled by multiple controller or by computer (optional)

● 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.

EVI 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

Parts of EVI Air to Water Low Temperature Heat Pumps

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

Installing EVI Air to Water Low Temperature Heat Pumps

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

COP of SPRSUN EVI Air to Water Low Temp Heat Pumps

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

Air temp ℃                                   Hot water temp ℃

W35  W45
-25 1.71 1.52
-20 2.04 1.79
-15 2.43 2.13
-7 2.89 2.48
2 3.49 2.88
7 4.15 3.35
12 4.52 3.72
20 5.07 4.28

Workmanship of SPRSUN EVI Air to Water Low Temp Heat Pumps


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

Economic Analysis of EVI Air to Water Low Temp Heat Pumps

Energy Saving Up to 75%: Compared with solar water heaters, gas water heaters and electric water weaters, the energy cost saved by SPRSUN air source heat pump water heaters is shocking.

Item SPRSUN Heat Pump Solar water heater          Gas water heater Electric water heater
Heat source electicity Solar+electricity Natural gas Liquefield gas electricity
Heat Value 860kcal/kw/h 860kcal/kw/h 9000kcal/kg 1080kcal/kg 860kcal/kw/h
Efficiency 450% 1/3time use electric heater 90% 85% 90%
Energy consumption per day 2.07kw/h 3.45kw/h 0.99m³ 0.87m³ 10.34kw/h
Cost $0.11/kw.h 0.11$kw.h $0.42m³ $0.96m³ $0.11/kw.h
Cost per day $0.23 $0.38 $0.38 $0.42 $1.14
Annual cost $84 $139 $153 $350 $416

Related Models of SPRSUN EVI Air to Water Heat Pumps for Heating and Cooling

Related models are as below:

Similar Products of SPRSUN EVI Air to Water Heat Pumps for Heating and Cooling


▲Working Air Temperature Range: -25℃ to 45℃

▲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℃.

Power supply V 220V~240V/50Hz/1ph 380V~415V/50Hz/3ph
Heating capacity KW 8.2 14.5 29 9.2 16.2 32.5 60
Input power KW 2.45  4.34  8.68  2.75  4.85  9.73  17.86 
3.35  3.34  3.34  3.35  3.34  3.34  3.36 
Cooling capacity KW 7.38  13.05  26.10  8.28  14.58  29.25  54.55 
Input power of cooling KW 2.48  4.41  8.85  2.79  4.93  9.92  17.60 
2.97  2.96  2.95  2.97  2.96  2.95  3.10 
Rated current A 12.4  21.9  43.9  5.2  9.2  18.5  33.9 
Fan motor power W 90 90 250 90 90 250 800
Fan motor quantity Piece 1 2 2 1 2 2 2
Water flow L/h 1567  2771  5541  1758  3095  6210  11465 
Water pressure drop Kpa ≤30 ≤40 ≤66 ≤30 ≤40 ≤66 ≤70
Net weight kg 112 164 320 112 164 320 556
Gross weight kg 118 174 333 118 174 333 606
Noise db 52 56 65 52 56 65 75
Classification of waterproof
Electric shock proof grade
Pipe size (internal thread) mm 25 25 32 25 25 25 50
Dimention mm 830*490*1160 1090*480*1260 1450*740*1150 830*490*1160 1090*480*1260 1450*740*1150 1850*1000*1950
Packing dimension mm 910*500*1320 1160*500*1410 1540*820*1320 910*500*1320 1160*500*1410 1540*820*1320 1940*1120*2180
Compressor model/quantity ZW30KSE*1 ZW52KSE*1 ZW52KSE*2 ZW34KSE*1 ZW61KSE*1 ZW61KSE*2 ZW108KSE*2


Before Selling
Set up customers file, and arrange professional sale engineers to introduce company products and 

   services to customers in detail.

If customers are interested in our products, we will send professional techniciansto survey the 

   installation environment.

Make the solution according to different customers’ requirements.

 During Selling

Machine installs and test by qualification engineers.
Ensure all the products we provided are qualified and new. The working life of the  main engine is 15 


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 trainingon 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 products guarantee is 18months from ex-factory date.Within18months,if any components of 

    your products damaged because of quality, we supply new replacement for free.

After the expiration of the quality assurance,we will continue to provide lifelong maintenance services,

   with just charging some cost price.


Guangzhou Sprsun New Energy Technology Development Co., Ltd

 Add: No.15 Tangxi Road, Yinsha Industrial Park, Xintang, Zengcheng District, Guangzhou,511338, China
 Tel: 0086-20-82181867
 Phone: 0086-18933985223
 Skype: sprsun.sprsun
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