It can supply domestic hot water and house heating with underfloor heating, fan coil units or radiators in cold area.
Features Technical Parameters Working principle

-25℃ Low temp air source EVI  heat pump electric heating

For house heating & hot water:
DAISHIBA EVI heat pump is specially designed for house heating and hot water of chilly climate areas, which can operate very well at even -25℃ ambient temperature with high efficiency. Adopting most advanced low-temperature enhanced vapors injection technology, DAISHIBA EVI heat pumps delivers higher heating capacity at low evaporation temperature thereby better respondidng to heating requrements than normal air source heat pumps. It can provide hot life water and space heating, widely used in hosuehold, hotels, restaurants, hospitals,schools, bath center, residential central heating etc.


Product Features:

1. Environmental friendly and safe
Electric parts and water system is completely cut off, ensuring security water use, no pollution to the atmosphere and free of greenhouse effect and it is the safest water heater.
2. Hot water (60°C) an be provided constantly even ambient temperature down to -25°C.
3. DAISHIBA use EVI special compressor, relibale quality and high performance.
4. Auxiliary eletric heater, insulation materials used for compressor protection.
5. Convenient: intelligent microprocessor with touch screen display. trouble shoot shows on display board automatically. 
6. World famous brand compressor, 4-way valve, motor, pcb, heat exchanger, emerson alco expansion valve used.
7.  Multiple protection function: high pressure, low pressur, overheating, overload anti-freezing, phase sequence, 
discharge temperature, suction temperature and so on. 
8.  All weather operation: stable operation without being influenced by weather. 
9.  Anti-corrosion: plastic case, coated steel or sus304# stainless steel case are available. 
10. Refrigerant of R22, R407C, are for optional. 
11. Automatically defrosting function included.

 3heat pump application scheme-Daishiba

 Installation Diagram:

1. the outdoor unit extracts latent heat from the air and compressor it to amplify then the hot gas exchanges heat with water in condensor. 2018 Upgraded low temperature type cold area dedicated EVI heat pump electric heating and bathroom hot water with water pump

2. the hot water is then uesd to heat the water in a storage cylinder to be used for hot water and heat the water in coil to be used for heating.
3. the hot water used as a normal part of your heating system is seperated from the domestic water.

The product price does not include a water tank, you can tell us according to your needs, we will provide a specific water tank offer

Stainless steel water tank selection
heat pump Applicable SS water tank Water tank liner dimension(mm) water tank dimension (mm)
3HP 1Ton ∅850*1700 ∅970*1800
2Ton ∅1080*2100 ∅81230*2200



2Ton ∅1080*2100 ∅81230*2200
3Ton ∅1230*2270 ∅1360*3270
4Ton ∅1600*1920 ∅1700*2020
Pressured water tank selection
100L(1~2 People) 150L(1~3 People) 200L(3~4 People) 250L(4~5 People) 300L(5~9 People)




Q1: Are you a factory or trading company?
A: We are the factory, and especially R&D, manufacturer and sell various heat pump euipment. We have engaged in the heat pump R&D and production over 10 years.

Q2: How to find a heat pump suitable for my product?
A: a. Tell us about your product details;

b. What functional heat pump products do you need;

c. Tell us your local minimum ambient temperature and maximum ambient temperature to recommend products that meet your needs;
d. Power supply specifications and special requirements used in your country. 

Q3: Is engineer available to serve oversea?
A: Yes, but the travel fee is paid by you. So actually to save your cost, We provide installation instructions and 24-hour online service and assist you till the end.

Q4: What is the payment term?

A: 30% T/T deposit and 70% T/T balance payment before shipping (If you purchase a sample that requires 100% payment, In order to avoid second payment, bank deduction fees will be generated again). Online trade assurance order, L/C, or as negotiated terms with clients.


Q5: How long is the warranty time?
A: 1 years of warranty. In guarantee period, if spare part broken, we will send you the parts free and we will pay the express fee. And please send us the spare parts back. when machine is out of guarantee period, we will provide you the spare parts by charge.

Q6: How can we make sure about the machine quality after we put the order?
A: Before delivery, we will send you the pictures for you to check the quality, and also you can arrange for quality checking by yourself or by your contacts in China.

Q7: We are afraid you won't send us the machine after we send you the money?
A: Please note our above business license and certificate. And if you don't trust us, then we can use Alibaba trade assurance service, guarantee your money, and guarantee your machine's on-time delivery and machine quality..

Q8: Why we should choose your company?
A: We are a professional heat pump manufacturer over 10 years, and we provide better after-sales service. We guarantee no risk for our deal.

Model Unit DRSES-10H DRSES-15H DRSES-18H/3 DRSES-21H/3
3 4.5 5 6
Heating area m2 50~75 75~110 75~110 110~150
Heating capacity kW 11.6 14.5 17.8 21.7
COP W/W 4.42 4.42 4.44 4.1
*Heating capacity  kW 8.9 13.2 15.5 17.6
*COP W/W 4.1 4.12 4.1 4.01
**Heating capacity kW 8.6 11.6 15 16.5
**COP W/W 3.23 3.27 3.24 3.07
Power supply V/Hz/Ph 220-240V/50Hz/1Ph 380-415V/50Hz/3Ph
Compressor type / Scroll (Copeland)
Number of compressors / 1 1 1 1
Fan discharging / Horizontal
Fan quantity / 1 2 2 2
Ambient temperture -25℃~43℃
Refrigerant / R22/R407C
Noise dB(A) 59 62 63 63
Dimension mm 800*400*1220 1000*470*1180 1110*530*1260 1110*530*1260
Net weight  kg 115 135 160 165
Testing condition: Hot water: Ambient temp.(DB/WB)=20℃/15℃, Water temp.=15℃~55℃
*Heating:Ambient temp.(DB/WB)=7℃/6℃, Water temp.(In/Out)=30℃~35℃
**Heating:Ambient temp.(DB/WB)=7℃/6℃, Water temp.(In/Out)=40℃~45℃

How does a heat pump work?

Heat pump uses electrical energy and take low grade heat energy from the outdoor air to heat refrigerant which in turn heats water for domestic use and space heating. The efficiency of a heat pump is known as the coefficient of performance or COP. This is a ration of the heat delivered to power consumed.

At the beginning of the first phase the refrigerant is cold low pressure liquid.

1. The refrigerant passes into the evaporator and heat energy from the outside air passes over the evaporator causing the refrigerant to increase in pressure and change to warm vapor.

2. This warm vapor then enters the compressor as it passed across one side of a plate heat exchanger, and this is transferred via the pimary water circuit to heat up the water tank.

3. The hot refrigerant gas is the temperature, the cool vapor still has a high pressure and to reduce this pressure the vapor passes through an expansion valve. This cause the pressure to drop and the temperature lowers, returning the refrigerant to its initial state of cool low pressure liquid.

This process is repeated.

It is only the refrigerant that passes through this cycle; the water is heated as it travels tthrough the plate heat exchanger. The heat energy from the refrigerant passes through the plate heat exchanger to the cooler water which increase in temperature. This heated water enters the home heating circuit and also be used to provide domestic hot water via a hot water tank.