What's the right temperature to turn on the air conditioner?

Under normal circumstances, the air conditioner can be turned on above 33 degrees. There is no fixed standard for this. Depends on personal feelings. If you feel hot, you can open it.

The most suitable air conditioning temperature for human body should be between 24℃ and 27℃, the lowest temperature should not be lower than 22℃, the indoor and outdoor temperature difference should not be greater than 5℃, and the air conditioning at night should not be lower than 24℃. If the air conditioner is turned on too much and the indoor temperature is too low, it is easy to suffer from "air conditioning diseases", such as colds, coughs, fever and listlessness. Han analyzed that there are several main reasons for "air conditioning disease":

The temperature difference between indoor and outdoor is too large. If people come in and out frequently, it will easily lead to the dysfunction of the balance regulation system in the body. At first glance, when entering and leaving the air-conditioned room, sweat pores suddenly open and close, sweating function is abnormal, perspiration is reduced, and waste in the body is not easy to discharge. Sweating is the most important function of the human body to maintain normal health in summer, and people can't help sweating in summer.

Air-conditioned rooms are closed, indoor and outdoor air cannot be exchanged, harmful microorganisms such as bacteria and viruses in indoor air are easy to breed, and the air quality is low. In the long run, it is easy to reduce the body's own immune function, and it is also easy to get sick due to bacterial infection. Because the air in the air-conditioned room is not ventilated, people sneeze less, and sneezing is a normal defense function of the respiratory tract, which can eliminate germs and secretions hidden in the nasal cavity and prevent these bacteria from spreading downwards, making people suffer from pharyngitis and chronic tracheitis. Staying in an air-conditioned environment for a long time, some people will have allergic reactions and runny noses.

Generally, central air conditioning can only cool down but not dehumidify. With the arrival of summer weather in July and August, it is not only high temperature, but also high humidity and low pressure. For example, if there are two days with the same high temperature of 39℃, one day the humidity is 40%, and the other day the humidity is 32%, then people will feel more sultry on that day with high humidity. Turning on the air conditioner at this time will make more people feel unwell, backache, loss of appetite and fatigue.