low temp DC inverter split heat pump
low temp DC inverter split heat pump
This series can supply heating and cooling, sanitary hot water by connections with fan coils and under-floor pipes and radiators.
Features Technical Parameters Working principle

Main features:

Type: Both Monobloc and Split DC Inverter Heat Pump are avaliable,
 (1) House heating & cooling; 
 (2) House heating & hot water; 
 (3) House heating & cooling & hot water; 
◆ Models: 3HP (11kw), 5HP (18kw), 6HP (21kw).
◆ Refrigerant: R410A environment friendly 
◆ Working condition: -25℃ ~ 43℃
★ DC Inverter Air to Water Heat Pump adopt DC Inverter compressor,When the system start,the compressor is running rapidly to make the room temperature reach the setting temperature,When the room reach its setting temperature,the system will keep its setting temperature effectively and accurately by controlling the compressor running speed,no need use more electricity. 
★ DC Inverter technique achieve the machine's big power and high energy efficiency rate,COP 30% Higher than Normal heat pump,Green Environment,High-Efficiency,Providing Wonderful Performance and Reliability,It has features of good running economy and work stability.
Recommendation of Product Selection
House heating
House cooling


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 need;
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.

 Models   Unit  DAO-11HAS  DAO-14HAS  DAO-18HAS/3
 Hot water   Nominal capacity  kW 11 15.8 17.5 
 COP W/W  4.30  4.30  4.40 
 Heating  Nominal capacity   kW  10.1  15.1 16.8 
 EER W/W  3.5 3.5  3.6 
 Cooling  Nominal capacity    kW  7.9   11.8 13.1 
 COP  W/W  3 3.1 
 Power supply   V/Ph/Hz  220-240/1/50  380-415/3/50 
Max. leaving water temperature   ºC  55  
Max. heating temperature   ºC 45   
 Max. cooling temperature  ºC  7  
Compressor   Brand  / Copeland-Scroll Type   
Quantity  1   
 Fan discharging  /  Side wind  
Fan quantity    /  1  2
 Ambient temperature   ºC   -25ºC~43ºC  
 Refrigerant   /  R22  
Noise level   dB(A)
 56 57  58 
 Dimensions  Indoor  mm  743*455*924  743*455*924   743*455*924
 Outdoor mm   1071*450*963 1071*450*1263  1071*450*1463 
Net weight   Indoor   kg  45  50 53 
 Outdoor  kg  82  115 120
Testing condition:
Capacities and power inputs based on the following conditions:
- Heating: Outdoor air dry bulb/wet bulb temperature 7℃/6℃, Water Inlet/Outlet temperature 40℃/45℃.
- Cooling: Outdoor air dry bulb/wet bulb temperature 35℃/24℃, Water Inlet/Outlet temperature 12℃/7℃.
 Container loading       20'  GP 34 27
40'  GP  72 57
  40'  HQ   72 57

How Does a Heat Pump Work?


Heat pumps use 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 where its temperature increase as a result of the compression process and turns into a hot gas.

3. The hot refrigerant gas is then condensed as it passes across one side of a plate heat exchanger, and this is transferred via the primary water circuit to heat up the water tank.

4. Despite dropping in 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 through 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.