Your Professional DHW Heat Pump Supplier
Zhejiang CEN New Energy Stock Co., Ltd. was established in 2001 and specializes in heat pump water heating solutions. With integrated R&D, manufacturing, and sales, we provide reliable heat pump controllers, water heaters, and tanks for residential and engineering markets worldwide.
Proven Industry Experience
With over 20 years of experience in thermal control and heat pump technology, we have long ranked among the top suppliers of solar water heater controllers in China, ensuring stable quality and mature engineering capability.
Complete In-House Manufacturing System
We operate our own heat pump, control system, and water tank production lines, supported by a 50,000 m² factory. This vertical integration allows consistent quality control, reliable delivery, and flexible project support.
Certified Products and Professional Testing
Our heat pump products are CE certified by TUV and tested in a GMP-certified laboratory, covering 1HP–30HP units under extreme temperatures from -30°C to 52°C, meeting the performance and safety expectations of global markets.
Parameter
|
Model |
CKXRS-3.5 IH |
CKXRS-5.0 IH |
CKXRS-7.0 IH |
CKXRS-9.0 IH |
|
|
Rated Heating capacity (KW) |
3.5 |
4.8 |
6.8 |
8.4 |
|
|
Rated outlet hot water quantity (L/H) |
75 |
108 |
150 |
193 |
|
|
Outlet water rated temp (℃) |
55 |
||||
|
Outlet water max. temp (℃) |
60 |
||||
|
Electricity parameter |
Rated power (KW) |
0.9 |
1.24 |
1.71 |
2.13 |
|
Rated current (A) |
4.1 |
5.6 |
7.8 |
11.4 |
|
|
Power supply |
1N 220V~/50HZ |
||||
|
Max power (KW) |
1.28 |
1.63 |
2.26 |
3.01 |
|
|
Max current (A) |
5.7 |
7.4 |
10.4 |
14.6 |
|
|
Refrigerant |
R410a |
||||
|
Dimensions mm |
783*286*684 |
823*356*684 |
|||
|
Weight KG |
43 |
51 |
65 |
68 |
|
|
Waterproof grade |
IPX4 |
||||
|
Defend electric shock grade |
GRADE 1 |
||||
|
Noise Db |
≦53Db |
≦55Db |
|||
|
Compressor |
GMCC Rotor type |
||||
Advantages of DHW Heat Pump
High Energy Efficiency
DHW heat pumps are the most efficient type of electric water heater, with the potential to reduce water heating costs by up to 73%. Because they transfer energy rather than useelectricity to create heat, they use around a quarter of the energy of conventional water heaters.
Long Lifespan
The stainless steel heating elements present in many DHW heat pumps can last up to three times longer than standard copper elements. Depending on the type of heat pump you choose, a system can last from 10-20 years - a relatively long life expectancy, especially when considering the savings each year.
Lower Running Costs
Compared to standard electric water heaters, DHW heat pumps use a quarter of the electricity. According to the Department of Energy, water heating accounts for 18% of energy used. This could result in savings of up to $600 a year.
Simple Installation
As long as you choose the right space to account for adequate airflow, surrounding environment temperatures, and potential electrical work, installing a heat pump is no more complex than a standard electric system.
Environmental Benefits and Carbon Footprint Reduction
DHW heat pumps use 70% less electricity than traditional electric models. This reduced energy consumption lowers your household's environmental impact. You'll save money on utility bills while using more efficient technology.
Reduced Noise Output
These units run much quieter than most people think they will. While you'll hear some sound from the fan and compressor, it's typically no louder than your refrigerator or dishwasher running. Many homeowners are pleasantly surprised by how quiet these units are, especially when installed in a basement or garage.

Efficiency/Economy: Often means using the heat pump only to heat water to maximize energy efficiency and savings.
Auto/Hybrid: Often the default setting – ideal for daily use, providing sustained heat for energy-efficient water heating.
Electric/Heater: Often means using only the electric resistance element to heat water – this setting can heat water the fastest but is the least energy-efficient setting.
Vacation & Timer: Some models allow the unit to be placed in “sleep” mode when away from the building.
Temperature
The air temperature around the water heater shouldn’t drop below freezing. Generally, heat pump heaters will deliver hot water most efficiently in temperatures above 37°F. Check your unit’s product specifications for more information about operation in low temperatures.
Space
You’ll need some space. Your new heat pump water heater will most likely be taller than the unit you’re replacing and, unlike conventional electric water heaters, it will require at least 450 cubic feet (about 8′ x 8′) of surrounding air space to operate effectively.
Comfort
If you are installing a heat pump water heater in your home’s living space, be aware that it will produce noise similar to a dishwasher when the compressor is running and it will exhaust cool air a few feet from the fan.

Precautions for Using DHW Heat Pumps
Regularly Check and Clean Air Filters
Your heat pump water heater has an air filter, which works to prevent dust and debris from accumulating on the coils. By checking these filters regularly (we’re talking monthly, set a calendar reminder!) and cleaning them out, you’ll maintain optimal airflow.
Inspect and Clean Condenser and Evaporator Coils
Heat is transferred in your water heater via the condenser and evaporator coils, and if dust and dirt build up on them, it will reduce your water heater’s efficiency. By inspecting the coils on your heat pump water heater, you can ensure they’re clean and efficient.
Maintain Adequate Clearance
When your heat pump water heater is installed, we make sure it has adequate clearance surrounding it to allow for proper airflow. It’s up to you to keep it up – remove any obstructions like boxes, furniture, or debris that can block and restrict airflow to the unit.
Check the Anode Rod
The anode rod for your heat pump water heater is a sacrificial component that helps prevent corrosion inside the water heater tank. Inspect the anode rod annually and replace it if it’s corroded or worn out.
Monitor Temperature and Pressure
Regularly check the temperature and pressure relief valve on your heat pump water heater to ensure it’s functioning correctly. Test the valve by lifting the lever briefly to release a small amount of water.
Flush the Tank Annually
Over time, sediment and mineral deposits can accumulate at the bottom of the heat pump water heater tank, reducing its efficiency and lifespan. By draining and flushing the tank annually, you’ll remove these deposits and maintain optimal performance.
Insulate Hot Water Pipes
Insulating the hot water pipes connected to your heat pump water heater can help reduce heat loss and improve overall efficiency. Use foam pipe insulation sleeves to cover exposed pipes, especially in unheated areas such as basements or crawl spaces.
Packaging and Shipping
|
Packaging |
Corrugated Box |
|
Shipping |
Shipping by sea, by air, by express are acceptable. According to your requirements. |
Our Factory
Zhejiang CEN New Energy Stock Co., Ltd. was established in year 2001, in the early time, the company mainly produces solar water heater controllers and other related products.In 2009,General Manager Xia Qing decided to transform the product,especially set up the heat pump department.


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As one of the most professional dhw heat pump manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale cheap dhw heat pump from our factory. For custom service, contact us now.
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