Generally speaking, the heating effect of air conditioning is not good, partly because there is too much dust in the air filter, and the air outlets of internal and external machines are blocked by foreign objects. The function of the filter screen is to absorb the dust in the air.
If there is too much dust, and it is not cleaned up in time, it will block the air circulation, resulting in a decrease in the air volume at the air outlet, resulting in insufficient heating. This is not a fault, but a maintenance problem of the air conditioner. As long as the air filter is removed and cleaned regularly, it will return to normal.
Second, fluorine deficiency.
Fluorine deficiency may also be one of the factors leading to failure. At present, most people use heat pump or heat pump plus auxiliary electric heating air conditioning. The working principle of these two air conditioners is to absorb heat from outdoor air when Freon evaporates.
When the outdoor temperature is low, the temperature difference with the evaporation temperature of Freon is small, the heat exchange effect becomes worse and there is less hot air. Therefore, if it is an old model with a long service life, the compressor will be more worn. When the outdoor temperature is lower than 0℃, the heating effect of air conditioner will be difficult to meet.
Extended data:
Air conditioning heating is the principle of inverse Carnot cycle. Simply put, it absorbs heat from the outdoor air, so the indoor heating effect is closely related to the outdoor temperature. Air conditioning has a certain temperature working range, beyond which the heating effect of air conditioning will be attenuated. This temperature range is the standard rated working condition stipulated by the national standard.
If the temperature is a little lower, as low as MINUS 7 degrees, then the air conditioner may not start, let alone the heating effect, which is determined by the principle of air conditioning, and all air conditioners are like this. Therefore, in the north, especially in the northeast and northwest regions, urban central heating is still used in winter, rather than air conditioning central heating. ?
Secondly, the comfortable temperature for most people is around 25 degrees. If the outdoor temperature is 35 degrees in summer, you only need to reduce 10 degrees to reach the comfortable temperature of human body, while if the outdoor temperature is 5 degrees in winter, you need to increase it by 20 degrees, which is very difficult according to the air conditioning principle.