Is it better for the air conditioner to have a single cooling or a cold or warm one

Good air conditioning and heating. To put it simply, a single-cooling air conditioner is an air conditioner that only has a cooling effect, and usually such an air conditioner is only used in summer. The air conditioner of the cooling and heating type can not only play the role of refrigeration, but also achieve the effect of heating and heating.

Therefore, this kind of air conditioner is generally used in winter and summer. In the southern part of China, most cities do not have heating design, unlike northern China, because the cold in winter is unbearable, so all kinds of heating facilities are designed and laid at home. For example, floor heating, electric heating, etc.

And in the southern cities of our country, most urban families have chosen heating and cooling air conditioners. In the north, because of the winter heating facilities, such families usually choose single cooling air conditioning to help tide over the heat in summer. In addition, the naming standards for cold air conditioners and cold and warm air conditioners are also different.

We can find that the professional identifier of air conditioning and heating has the letter "R" in it. However, there is no "R" letter in the single-cooling type of air conditioner. Under normal circumstances, ordinary air conditioning models are "KFR-20GW" as the beginning of the logo.

If it is a single-cooling air conditioner, it will only be "KF-20GW", so in this regard, you can also distinguish the difference between the two air conditioners.

From the perspective of comfort, air conditioning and heating are better. For example, when there is no central heating and the weather is relatively cold, you can use air conditioning to heat up; However, in Southeast Asia and other regions, there is no need to use air conditioning for heating, so for these areas, it must be better to have a single cooling.

Purely from the working principle of air conditioning, the refrigeration capacity of the single-cooling air conditioner will be better than that of the cold-warm type, because the single-cooling air conditioner lacks a four-way reversing valve, and the loss of refrigerant flow resistance becomes smaller.

It's better to choose an air conditioner or a heater. It can be used in freezing summer. The price is not much more expensive than a single cooler.

The single refrigeration of the air conditioner has relatively few chances of failure (there is no need for cold and heat conversion, there is no four-way valve, this component is easy to fail), but it lacks the function of heating! It was said.

Single refrigeration is better than cold and warm, which is also from one side (not bad), and it is useless in winter! Hehe! The answer is that my uncle's house has a single cooling air conditioner, which has been used for 12 years, and it has never broken down, and it has never lacked refrigerant (no freon).

It's hot and it's cold.

When many people buy air conditioners, they will hesitate whether it is better to single cold air conditioners or cold and warm air conditioners.

1. What is a single cooling air conditioner and a heating air conditioner

Single-cooling air conditioner, as the name suggests, refers to an air conditioner that only has a cooling function. The corresponding air conditioner has two functions, cooling and heating, and can be used in both summer and winter.

2. The difference between single cooling air conditioner and cold and heating air conditioner

1.In terms of components, the single-cooling air conditioner has one less four-way valve and a set of throttling devices (i.e., capillary plus lev) than the cooling and heating air conditioner. The four-way valve, also known as the hydraulic valve, is an indispensable component of the refrigeration company.

This control valve has four oil ports, when the air conditioner is in the refrigeration state, the four-way valve is not energized, and the principle of single-cooling refrigeration is the same. When the air conditioner is in the heating state, the four-way valve is energized, the piston in the figure below moves to the right, port A and port B are connected, port C and port D are connected, the refrigerant is compressed by the compressor into high temperature and high pressure gas, through port A, discharged from port B, into the indoor condenser, the gas becomes Chinese high-pressure liquid after the condenser absorbs cold and releases heat, becomes a low-temperature low-pressure ladder after the expansion valve, and finally becomes a low-temperature and low-pressure refrigerant after the effect of heat absorption and cooling of the outdoor evaporator through the ridge of the D port, and enters the compressor from the C port, This completes a heating process;

2.In the case of the same number of horses, the condenser of the single cooling air conditioner is smaller than that of the cold and warm air conditioner, and the actual cooling capacity is less.

3. Regional distinctions

The single-cooling air conditioner only has a refrigeration function, which is considered from the energy saving and economic aspects, and is hotter in summer and warmer in winter'Regions, such as the northern part of China, have heating systems, which can ensure sufficient indoor heating in winter, and air conditioning heating functions are rarely used; The heating and cooling air conditioner is more suitable for areas with cold winter and hot summer, and the southern region of our country is generally high temperature in summer and wet and cold in winter, while the south of our country does not have a large area of unified heating system like the north, and it is more appropriate to choose cold and warm air conditioning. In order to ensure the heating effect, pay attention to the heating and cooling capacity when purchasing, and it is best to choose an air conditioner with a heating capacity greater than the cooling capacity.

Fourth, the comparison of power consumption

In the same use environment, if the energy efficiency is the same, there is basically not much difference in the power consumption of the cooling and heating air conditioner and the single cooling air conditioner.

Advantages and disadvantages of a single air conditioner:

Advantages of a single air conditioner:

1.Ideal for those who have heating at home or who don't need air conditioning. In daily life, users often encounter the situation that they want to pay for cold air conditioning because they have installed heating in their homes.

But it is difficult to buy here, and you can only choose to match the power of a small-capacity air conditioner. For example, if the air conditioner with a normal cooling capacity of 5kw is configured, it will be equipped with a 4kw air conditioner, so that the heating effect of the air conditioner will be poor or lose its effect.

2.The cost is cheaper than heating and cooling air conditioners. First, the price of the air conditioner will be a few hundred yuan cheaper, and the second is that the installed wires do not need to consider the power consumption of electric heating too much, which is more economical. For example, air conditioning and heating generally use 4 square millimeters of wire, and single cooling only needs square millimeters of wire.

3.High stability and low maintenance rate. We all know that no matter which brand of air conditioner, hot in summer and cold in winter is the season with a high failure rate, especially when the temperature is hot and cold.

Because in such an environment, the compressor has to do a lot of work and heat dissipation, and the extreme climate of the environment will bring great operating pressure to it, so the shooting delay rate is extremely high.

Disadvantages of a single air conditioner:

Since the single cooling air conditioner only has the functions of refrigeration, natural wind and dehumidification, but does not have the function of heating in winter, its audience can only be users in the south or users who cannot use air conditioning for heating in winter, such as Guangzhou, Sanya, etc.

In areas like Sichuan and Chongqing, air conditioning and heating are known for their high energy consumption and poor comfort; However, there are still a considerable number of users who need air conditioning and heating in early autumn, winter and early spring, so it is difficult to buy single cooling air conditioners in physical stores under the air conditioning line.

Single-cooled air conditioners (without heating) models start with "kf"; Heating and cooling air conditioners start with "kfr" or "kfrd".

The way to distinguish whether an air conditioner is a single cooling or heating or cold and warm.

1. The model of single-cooling air conditioner (without heating function) starts with "kf"; Heating and cooling air conditioners start with "kfr" or "kfrd". (Where "R" stands for heating function, "D" stands for electric heating function, when the ambient temperature is low, turn on the electric heating function to enhance the heating effect.) ）

Example: <>

2. There is no heating (the icon of the small sun) in the "mode" option of the remote control of the single cooling air conditioner, and the air conditioning and heating can be selected.

A single cooling air conditioner can only refrigerate, and a dual-temperature air conditioner can not only cool down, but also heat and heat the air.

Common sense in the use of air conditioning:

1. First of all, it is necessary to carry out reasonable maintenance of the air conditioner, keep the inside and outside of the air conditioner body clean and clean, and regularly clean the filter screen and outdoor finned aluminum foil heat sink to make the air conditioner in the best working condition, avoid the occurrence of failures, prolong the service life, and also achieve the purpose of power saving.

2. Don't adjust the temperature difference between indoor and outdoor too much, the best feeling of the human body to the ambient temperature is between 18-25 degrees, taking into account the factor of power saving, when the air conditioning is refrigerated in summer, the higher the indoor temperature, the more power saving, the general adjustment is between 26-29 degrees, as long as you don't feel hot, you can also use electric fans to improve indoor comfort. When heating in winter, the lower the indoor temperature, the more electricity is saved, usually between 16-22 degrees Celsius is more appropriate. Whether it is cooling or heating, the larger the temperature difference between indoor and outdoor, the greater the power consumption, and the power consumption will increase by about 5-8% for each degree of temperature difference.

3. Try to seal the doors and windows of the room, if the sun is directly irradiated, thickened curtains should be installed to improve the sealing and thermal insulation effect of the room.

4. When the air conditioner is working for refrigeration, the air deflector of the indoor unit should be adjusted to blow the air in the horizontal direction, because the cold air flow is downward. When the air conditioner is heating, the air deflector should be adjusted to blow downward, because the hot air flow is upward, so that the indoor temperature is the most uniform, the comfort is the best, and the most energy-saving. The wind speed should also be adjusted to automatic wind speed, and the air conditioner will automatically adjust the wind speed according to the indoor temperature.

If the air conditioner is blowing directly on the bed or person, you can buy a wind deflector online to use it.

5. If the outdoor unit is directly exposed to the sun during refrigeration work in summer, it is best to install a sunshade to improve the heat dissipation effect. When the air conditioner is not in use during the season, it is best to cover it with an air conditioner cover to avoid dust from entering the machine and accumulating it, which will affect the efficiency of the air conditioner.