2, air water heater tank volume selection: this should be selected according to the amount of water consumption, bathing is generally a person once by 40 liters, then if there are five people bathing every day, then the amount of hot water for 5x40 = 200 liters. Because the air water heater can circulate heating, all-weather water supply, unlike solar water heaters can only heat a tank of hot water a day, so the capacity does not have to increase, 5 people to choose 150 to 200 liters of capacity can be, but if the hot water is more places, you can increase the capacity appropriately.
3, air water heater insulation: air source water heater is a storage water heater, the water temperature is generally set at 55 degrees to 60 degrees. Most air energy water heaters have a temperature holding function. Good air energy water heater insulation is usually more than 50mm.
4, the location of the air water heater installation: air water heater has a whole, split, wall-mounted three, for the outdoor space is more generous, you can choose the whole (tank and host as a whole). For outdoor space is not much, you can choose the split, the host is placed outdoors, the tank is placed indoors.
5, the compressor of the air water heater: as the core driver of the air water heater, choose the air source water heater, be sure to pay attention to the brand of the compressor used. Try to buy the use of imported heat pump special compressor.