• It saves the energy in making hot water and able to heat the water in same amount as an electric heater but consumes the electric power 3-4 times less (depending on the design) because it exchanging the heat of the refrigerant in the gas form making the water hot which is different from an electric heater which directly changes the electric power to the heat.

** The graph showing the expenses in making hot water from different ways by setting the average cost of the bunker oil at 16 Baht per liter with the capability of 79%, diesel  at 29 Baht per liter with capability of 89%, LPG gas at 16.8 Baht per kilogram with the capability of 85%, electricity bill at 2.80 Baht per unit.

• It is a clean energy because it is a standard Heat Pump using R134a refrigerant which is the tomorrow’s refrigerant and does not pollute the environment unlike CFC which causes pollution and makes the world warmer. Besides, R134a still has high heat rate which is suitable for making hot water.
  
• It has cool air as the by-product from exchanging of the heat between the refrigerant in the gas form to the water resulting in getting the cool air as the by-product when the refrigerant exchanges the heat with the air in the liquid form. The cool air received from this process can be used with the air conditioner in a workshop or a common room for free.
  
• It is safe and free from electric short. No worries about electric short while using the hot water because the hot water is from the central system not directly from any electric appliances.

Heat Pump uses a device functioning the same way with other air conditioning system which has 4 main parts of the heat pump including Compressor, Condenser, Expansion Valve, and Evaporator.
The Heat Pumps functions by exchanging the heat of the refrigerant with the medium—water and air just like in the air conditioning system. When the refrigerant absorbs the heat from the air, it will evaporate in the Evaporator. Then the refrigerant will move to the Compressor where it will be compressed to have high temperature and pressure. After that, the refrigerant will flow to the the Condenser to release the heat to the water. Once it loses its heat, the refrigerant will condense into a liquid form and flows into the Expansion Valve. There, it will decrease the pressure and temperature of the refrigerant. The refrigerant which has been through the expansion Valve will be in the form of liquid compound which will later go to absorb the heat the Evaporator. The Heat Pump’s process will keep on functioning in a circle like this until it obtains the hot water as desired.