Heat pump Kahawa is the leading brand in the heat pump industry with outstanding quality and technology manufactured for the Japanese and exported to the EU and ASEAN markets. Heat pump Kahawa is a central water heater that replaces direct-fired water heaters that are both energy-consuming and unsafe. The Kahawa water heater will provide a large amount of hot water for many uses and is safe, energy-saving and convenient. Heat pumps are installed on the attic or roof of villas, castles or roofs of hotel buildings. Kahawa Vietnam is the representative of the company in Vietnam, importing genuine products in original packaging, with full import certificates to introduce products, distribute and sell and after-sales in the Vietnamese market.

Comparing using a heat pump with using a water heater, a villa with 5 bathrooms (bathrooms) when using a water heater heated by direct electric resistance will need 5 water heaters (each heater has an electric capacity of 2.5 KW x 5 heaters = 12 KW when in use + 5 switches, 5 circuit breakers, electric cables + installation labor). When using a heat pump (total hot water), only 1 heat pump is needed installed on the roof with an electric capacity of 1.2 KW when using a heat pump, the electric capacity is much less than using a water heater and is safe (because the heat pump operates indirectly like an air conditioner), in terms of convenience when using a heat pump, hot water is always available and provides a large amount of hot water to meet all usage needs.

So using a heat pump to heat the oven is much more energy-saving and safe than using a direct electric water heater.

Kahawa total hot water system installed on the roof of family houses

Kahawa heat pump

Kahawa heat pump structure

Heat pump consists of 4 main components: compressor, expansion valve, evaporator and condenser.

Evaporator: Absorbs heat from the environment (has thick and double fins for high heat exchange efficiency and is coated with anti-corrosion and anti-rust layer for acidic and salty environments)

Compressor: Compresses refrigerant (gas) to increase temperature and pressure (Copeland and Panasonic compressors)

Condenser: Transfers heat from refrigerant to water.

Expansion valve: Reduces refrigerant pressure before returning to the evaporator.

–Heat pump is imported in its entirety with full import certificate.

-The tank is made of pressure-resistant, antibacterial, heat-retaining enamel-coated steel (the enamel layer ensures heat retention and antibacterial properties).

-50mm thick polyurethane insulation layer in the middle

-Powder coated steel shell (Safe for equipment and users)

-The hot water tank has an integrated backup resistor that automatically turns on periodically to disinfect the system when the heat exchanger is being maintained or when there is a problem with the condenser, hot water still runs.

-Heat exchanger condenser with powder-coated steel shell is safe and can withstand outdoor weather

-Double heat exchanger with anti-corrosion and anti-rust coating for salty or acidic environments

-Wilo-Germany brand circulation pump runs smoothly and durably

-Panasonic Japan compressor

-High heating coefficient high COP heats water quickly

- Production system on modern Japanese technology line ensures compliance with EU export standards

- Kahawa Heatpump central water heater is a smart choice for everyone and every family.

Video comparing the structure of Kahawa heat pump with other brands of heat pump

How heat pump works

Heat pump also known as "central water heater" is a machine that uses the principle of thermodynamics, using a small amount of energy to operate the system, taking heat from the environment, transporting heat from the environment. The air is heated indirectly through the gas medium to heat the water in a cycle, including 4 cycles (the operating principle is similar to the operating principle of the air conditioner).

-Evaporation stage (the heat carrier absorbs the ambient air temperature and heats up, evaporating into a warm gaseous heat carrier. The air loses heat and condenses into water on the evaporator.

-The compressor heats up the heatsink when a compressor force is applied to it.

– Condensing stage (the heat carrier when leaving the compressor is heated up to 100 degrees Celsius and enters the condenser, where it will transfer heat to the water to heat it up to the required temperature of 55 to 65 degrees Celsius and is led to the insulation tank to keep the temperature.

-Expansion valve (after the heat carrier transfers heat to the hot water, it continues to pass through the expansion valve to form a closed loop.

Therefore, heat pump water heaters are the optimal solution to save energy for hot water needs of families or production facilities in hot and humid climates, such as Vietnam.

Kahawa heat pump schematic diagram

Heat pump application in family life

Applying heat pump machines to projects of apartment buildings, villas, castles, hotels, with a team of engineers and experts with rich experience to calculate and provide the most optimal clean water and hot water solution for the project and bring convenience with a large amount of hot water always available and safe without worrying about electric shock, saving electricity compared to using direct resistance water heaters (calculating the amount of clean water and hot water supplied to the equipment to ensure enough pressure and flow for optimal safe use...

Video review of actual clean water and hot water systems for families

Heat pump application for hotels

The heat pump hot water solution for family hotels is much more economical in terms of investment costs and electricity costs. Using a heat pump heat pump provides safety and a continuous supply of hot water and a large amount of hot water to meet the needs of use and safety. When using a heat pump with low power capacity, it heats up quickly (large and large heat generation efficiency, saving energy) compared to using a direct water heater which is not safe and has a large power capacity, consuming electricity, and high installation costs (large electrical cable materials because of large power capacity, the cost of installing many water heaters requires a lot of work, many materials, and a lot of investment costs and electricity).

Comparing when using a heat pump with using a water heater, a 60-room hotel with 60 bathrooms (bathrooms) when using a water heater heated by a direct electric resistance will need 60 water heaters (each heater has an electric capacity of 2.5 KW x 60 heaters = 150 KW of electricity when in use + 60 switches, 60 atomats, electric cables for 60 water heaters). When using a heat pump (total hot water), only 1 heat pump is needed installed on the roof with an electric capacity of 4-6 KW. When using a heat pump, the electric capacity is much less than using a water heater and is safe (because the heat pump operates indirectly like an air conditioner). In terms of convenience, when using a heat pump, hot water is always available and provides a large amount of hot water to meet all usage needs.

Thus, using heat pump hot water solution saves investment costs in materials, installation labor, saves energy and is safe and meets the need for a large amount of hot water and is safe and convenient.

Total hot water solution for hotels

Comprehensive optimal solution when combining the source clean water treatment system (source filter) with the total hot water system for villa, castle and hotel projects:

Clack total filtration system – USA