First, the larger the water tank capacity, the larger the volume of the air energy water heater. The bigger the volume, the more space the device occupies. At a time when everyone is pursuing a big house and a large space, we have installed a huge air energy water heater, wasting home space, which is obviously very inappropriate.
Second, the water tank capacity is large, and there is a lot of water that can be stored, but correspondingly, the heating time of the air energy water heater will also become longer. Originally, if you choose a 120L air energy water heater, you may only need to heat it for 15 minutes. If you switch to a 200-liter air-energy water heater, you may need to heat it up for 25 minutes. It doesn't make sense to add 10 minutes of heating time for no reason, but you don't need this part of the hot water.
Thirdly, the increase in heating time will also lead to an increase in the power consumption of air energy water heater equipment. Air energy water heaters follow the "reverse Carnot principle" heating, and the equipment itself is energy-saving, but it is not used to heat so much hot water every day, which will form a vicious circle - causing a certain amount of electrical energy loss every day, which will increase electricity costs.
What are the disadvantages of choosing a tank with an excessive capacity, it has been clearly stated above. Next, Henan Yin Suisheng Business will tell you how to determine the capacity of water heater equipment. The method is very simple, countless cases have proved that a person needs 50L of hot water to take a bath, which can be calculated according to the number of people in the family. 150L for three people and 200L for four people. Looking at the air energy water heaters on the market, there are basically very few models that exceed 200L, because most families have no more than four permanent residents. Even in the winter when the demand for hot water is further increased, the 200L air energy water heater is enough to meet the hot water bathing needs of a family.