Besides air conditioning, what else can cool down?

Yes, there is an air cooler now, which is about 200-500 yuan. You can search on Taobao Mall, and many styles are also sold in supermarkets. This kind of air cooler is very energy-saving, small in size, easy to store and does not take up space. It's better than air conditioning and worth a try. After maintaining and repairing the air cooler system for a period of time, dust will accumulate on the filter screen, which will increase the air resistance and cause the air volume to be reduced or blocked, so it needs to be cleaned regularly. After long-term operation, the second-hand air conditioner will loose and fall off the connector due to the heating of wires and components, resulting in poor contact and phase loss, which needs regular inspection and treatment. Accidents caused by failure of water flow switch, high and low voltage switches, safety valves and other protection devices shall be replaced in time. Note: When repairing the air cooler, it is necessary to turn off the power supply, preferably for a period of time, because static electricity will be generated after long-term use, and it will not disappear immediately after power failure, so the maintenance will be carried out after ensuring safety.