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EVI 28KW 80℃ Hot Water High Temperature Air Source Heat Pump Heating

1. High Cop: 2.85

2. Max Water Temp: 80℃

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

4. Running Temp: -10℃~45℃

5. Heating Capacity: 28KW
  • CGK/D-36(LH)


Features of Heat Pumps

EVI High Temperature Heat Pumps


SPRSUN EVI High Temperature Air Source Heat Pumps are designed for commercial/industrial hot water heating with lowest air temperature above -10℃.


  • Efficient and Energy-saving 

Heat pump absorbs 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 water heater, saving lot of power for the user.  


  • Green and Environmental Protection

By using air energy and electric energy, there is no harmful gas being discharged during the work of heat pump. R134A 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, 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 cabinet we are using is made of  GALVANIZED STEEL, making them more rust resistant and durable.


  • 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. 



Heat Pump Specifications


  • Rated working condition: dry-bulb temp: 20℃, wet-bulb temp: 15℃, cool water temp: 15℃, hot water temp: 75℃.

Power Supply V 380V~415V/50Hz/3ph
Heating Capacity KW 28
Input Power KW 9.82
Rated Current A 18.7
Max Current A 25.2
Fan Motor Power W 250
Fan Motor Quantity Piece 2
Water Rate L/h 401
Water Flow L/h 8025
Water Pressure Drop Kpa ≤60
Net Weight kg 320
Gross Weight kg 333
Noise db 60
Waterproof Classification
Electric Shock Proof Grade
Pipe Size (Internal Thread) mm 32
Dimension mm 1450*740*1150
Packing Dimension mm 1540*820*1320
Compressor Model/Quantity




Heat Pump Components


SPRSUN EVI High Temperature Heat Pumps use high quality components, such as Copeland Enhanced vapour injection (EVI) technologh compressor, Danfoss Electronic expansion valve and Eaton AC contactor and thermal relay. 

EVI High Temp Heat Pump Materials



installing heat pumps


It is easy to install SPRSUN air source high temp heat pump as below:

EVI High Temp Heat Pump Installation Diagram



COP of heat pumps


SPRSUN High Temperature Air source Heat pump Cop at different temp conditions:

Air Temp ℃                                                 Water Temp ℃

15-40 15-50 15-60 15-70 15-75
-7 2.44 2.32 2.21 2.12 2.06
2 3.05 2.90 2.76 2.65 2.57
7 3.09 2.93 2.79 2.68 2.60
10 3.15 2.99 2.84 2.73 2.65
15 3.25 3.08 2.93 2.82 2.74
20 3.38 3.21 3.05 2.94 2.85
25 3.55 3.37 3.21 3.08 2.99
30 3.73 3.53 3.37 3.24 3.14



workmanship of 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 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 saving heat pumps



economic analysis of 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.



Heat Pump


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/m⊃3; 1080kcal/kg 860kcal/kw/h
Efficiency 450%

1/3 time use of

electric heater

90% 85% 90%

Energy consumption 

per day

2.07kw/h 3.45kw/h 0.99m⊃3; 0.87kg 10.34kw/h
Cost $0.11/kw.h $0.11/kw.h $0.42/m⊃3; $1.1/kg $0.11/kw.h
Cost per day $0.23 $0.38 $0.42 $0.96 $1.14
Annual cost $84 $139 $153 $350 $416


Heat Pump Models


Related models are as below:

EVI High Temp Heat Pump Models



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