

Enamel Water Tank Brings You Healthier Water Quality
High pressure and fatigue resistance which pass 280,000 times pulse test.
High corrosion resistance because enamel coating makes the welding line of steel plate seperate with water, so with long working life.
Our Porcelain enamel tanks approved by CE, WATER MARK, ETL, WRAS, EN12977-3.
High efficient Micro-Channel Heat Exchanger


Library Level 40dB Silence
Centrifugal fan, smooth air intake
Double plate air guiding, optimizing air duct
Double layer soundproofing, reducing radiation
Double piece evaporator makes it more optimized
High Efficient Compressor
Being a compressor for heat pumps from a globally recognized brand, it operates more quietly and is more dependable when matched to the system.
Intelligent Defrosting
You can have a more comfortable winter thanks to its clever defrosting design, which can completely eliminate heat exchanger bottlenecks in cold weather like frosting and delayed heating.
1:1 Gold Ratio
The unit and water tank are matched with a gold ratio to eliminate the phenomenon of disharmony, so that it is more energy-saving and professional.


Intelligent Control Electric Expansion Valve
The electric expansion valve can control the refrigerant volume more accurately to ensure the unit stay in the best state.



Technical Parameters:
Model | KRS75A-250V | KRS75A-300V |
Tank Capacity | 250L | 300L |
Inner Tank Material | Enamelled Steel (Steel BTC340R, 2.5mm thickness) | Enamelled Steel (Steel BTC340R, 2.5mm thickness) |
Outer casing | Painted galvanized steel | Painted galvanized steel |
Tank Rated Working Pressure | 0.8MPa | 0.8MPa |
Waterproof grade | IPX4 | IPX4 |
Condenser | Micro-Channel Heat Exchanger | Micro-Channel Heat Exchanger |
Electric Element Power | 2500W | 2500W |
Heat Pump Rated Input | 827W | 827W |
Heat Pump Output | 3300W | 3300W |
Max. Input Power | 4000W | 4000W |
Heating Capacity | 75L/H | 75L/H |
Max. Water Temperature | 75℃ | 75℃ |
Voltage | ~220-240V / 50Hz | ~220-240V / 50Hz |
Refrigerant | R134a | R134a |
Cop | 4.08 | 4.08 |
Inlet / Outlet size | ¾” | ¾” |
Control Method | Remote display | Remote display |
Noise Level | 40dB(A) | 40dB(A) |
Dimensions | Ø650×1765mm | Ø650×1950mm |
How It Works:
All in one heat pump water heaters are solutions where the domestic hot water is heated by an integrated heat pump
- The fan inhales ambient air transferring its energy to the refrigerant agent in the evaporator thus changing from liquid to gas.
- The gas is further heated by compression.
- In the condenser the gas transfers its accumulated heat to the water tank. As it gets colder it transforms back to fluid. The pressure of the fluid is further reduced by the expansion valve.
- The electric back-up heating starts only when required during insufficient heat pump working conditions.

What is an all-in-one heat pump?
An HVAC system that combines heating and/or air conditioning and has all of its parts installed in one cabinet is known as an all-in-one system. The conventional indoor-outdoor separation arrangement stands in stark contrast to this.
What are the pitfalls of a heat pump water heater?
High upfront costs and complex installation. For many homes, the initial investment in heat pump water heaters can be a significant hurdle: Price tag: Despite the long-term savings, the initial cost of these devices is higher compared to traditional electric water heaters, making them more energy efficient.
all in one heat pump Youtube guide
