A lot of users think that leaving the air conditioner unused for months or even one year will not cause any problems. However, not using air conditioners for a long time will not only influence the cooling effect but also damage the machine itself in many aspects. This article will clarify the reasons and come up with some maintenance tips.

 

I. Potential problems

 

1. Compressor aging, poor lubrication

 

The compressor is the heart of the air conditioner; not using it for a long time will lead to lubricating oil sedimentation and oil film tearing. It will add more friction when starting the air compressor and damage the spare parts inside, even burning the compressor.

 

2. Parts getting damp and rusty inside

 

Both the indoor and outdoor units include metal parts. If not used for a long time without moisture prevention measures, the PCB board and fan motor will get damp and age due to the humidity in the air.

 

3. Dusty filter with breeding bacteria

 

If there is no regular cleaning, the filter will accumulate dust, pollen, and even mold. Not using it for a long time, the air conditioner will be the warm bed for the bacteria. Dirty air will be blown into the room when staring.

 

4. Unseen refrigerant leakage

 

If the air conditioning system has a slight leakage of the refrigerant and is not used for a long time, then it will not be detected timely. Once we go back to use it and find it does not cool, the compressor is already damaged.

 

 

II. Suggestions to maintain an air conditioner without using it for a long time

 

Shorten operation each month

• • It is recommended to turn on the air conditioner for 10-15 minutes every month, even in the non-using seasons. It keeps the compressor, fan, and electric circuit in an active condition.

 

Completely clean the filter and panel

• • Before turning the air conditioner off, it is necessary to clean the air filter and the machine itself to avoid accumulation of the dust and bacteria.

 

Keep a dry environment

• • It is suggested to use dehumidify mode for a period before turning off the AC units to keep the machine dry inside, particularly during the rainy season and in humid areas.

 

Cover the outdoor unit well

• • If the air conditioner is not in use and will be exposed to direct sunlight or rain for a long time, we can use a mask or canvas to cover and protect the outdoor unit and avoid aging.

 

 

III. Tips before reactivating the air conditioner

 

• Clean or change the filter.
• Check the battery and the power supply.
• Supply the power for 2-3 minutes before starting, avoiding voltage surge.
• If poor cooling or a strange smell occurs, please contact the professional team for help.

 

Air conditioners are not meant to be left idle. Not turning them on for long periods of time will damage the machine. Only if we turn it on regularly, clean the filter, take moisture-proof and dust-proof measures, and take such easy steps can we extend the lifespan of air conditioners and ensure safety. The regular maintenance should be a concern, particularly in South China and other tropical countries.

 

When choosing air conditioners, most people are concerned about the brand, efficiency, and horsepower. They often miss a key factor, which is the installation position. In fact, even if you purchased a high-efficiency air conditioner, if the installation position is unconventional, then the cooling performance will be decreased and energy consumption will be high, or the life span will be shortened, etc. So how important is the installation position? How to choose a perfect position for installation? Here we will explain and help you pick out the best position to install your air conditioner.

 

I. The impact of improper indoor unit location

 

1. Uneven cooling, bad comfort feeling

If the air conditioner is installed on one side or locked by the furniture in the room, the cold air can not be spread evenly. This will easily lead to "one side cold, other side warm" and greatly discount the feeling of comfort.

 

2. Lower cooling efficiency, more energy consumption

The air conditioner starts frequently to adjust the temperature, consuming more electricity and damaging the air compressor easily. It's not cost-effective in the long run.

 

3. Blow directly toward human body; it triggers "air conditioner illness"

Installation at a lower position or facing the bed will make the cold air blow directly on the head or body, easily lead to "air conditioner illnesses" such as cold, headaches, muscle stiffness, etc.

 

The indoor unit shall be installed in the middle-upper part of the room, avoiding the positions that could blow directly on the human. The air vent is toward the open zone of the space, which is better for cold air to spread.

 

 

II. The impact of improper outdoor unit location

 

1. Bad radiation, lower cooling ability

If the outdoor unit is placed under direct sunlight or bad ventilation and the heat can not be radiated effectively, then the cooling efficiency will be greatly decreased.

 

2. More noise and vibration

Installing on window sills, corners, or weak structural areas can cause noise and vibration problems due to resonance or unstable support.

If the air conditioner is installed on window sills, corners, or weak structural areas, because of the resonance or unstable support, it will make noise and vibration problems.

 

3. Lifespan problem

Being long-term exposed to sunlight or heavy dust accumulation will accelerate the aging of the outdoor unit, influencing the lifespan of the whole unit.

 

The outdoor unit should be placed in a cool and ventilated location, such as a balcony, and keep a heat radiation area of at least 30 cm around it.

 

 

III. Common misconceptions inventory

Misconceptions	Description
Concern on beauty rather than the air flow.	If the air conditioner is installed too high or blocked by the ceiling, cold air circulation is hard to achieve.
The outdoor unit is too close to the wall.	The space for heat dissipation is not enough, affecting the operation efficiency of the compressor.
The indoor unit faces the bed.	The cold air blows directly to the human body, influencing our health.
The distance between indoor and outdoor units is too long.	This will lead to too long a connecting pipe, increasing the energy consumption and installation cost.

 

IV. Advice for the best installation position.

 

• Bedroom: It should be installed in the upper position of the side wall, avoiding facing the bed.
• Living room: It's better to choose the position near the center of the ceiling or the unblocked wall.
• Office: Keep it away from the workplace, ensuring the cold air is dispersed in the activity area.
• Child's room: Avoid direct blowing and concern yourself with the adjustable wind direction.

 

 

V. Reasonable installation consumes half the efforts

 

Whether your home air conditioner works well or not, the installation position determines. Proper installation can not only improve cooling efficiency and energy-saving effects but also extend the lifespan and secure family health. As for an air conditioner, 30% is based on the quality and 70% is on the installation. Please refer to the professional guidance before installation, or give this job to the servicemen.

 

As the global concerns about climate change and environmental preservation are rising nowadays, the air conditioning industry is actively searching for more environmentally friendly and more effective cooling solutions. In which the option of refrigerant becomes the key factor to measure the air conditioning ability in environmental friendliness. Currently, R32 and R410A are two widely used refrigerants in the market. So what are the differences between them? Which one is better? Here we will have a comprehensive introduction.

 

I. What is R410A and R32

Refrigerant type	Chemical Name	GWP (Global Warming Potential)	Flammability	Common Uses
R410A	R32, R125 mixture	2088	Non-flammable	Home/commercial air conditioners
R32	Difluoromethane (CH₂F₂)	675	Slightly flammable (A2L)	New generation of environmentally friendly air conditioning refrigerants

II. Comparison of environmental performance

 

1. GWP: R32 is more environmentally friendly.

 

GWP (Global Warming Potential) is a key data point to measure the impact of greenhouse gas on the global climate change. R410A has a GWP of 2088, while R32 has only 675, roughly 1/3 of R410A. It means when the gas leakage is the same weight, R32 impacts less than R410A on climate change.

 

2. Ozone damage potential (ODP)

 

Both two types of gas are in the same 0 ODP, which will not harm the ozone layer. But due to the high GWP of R410, it is less competitive than R32 in overall environmental friendliness.

 

III. Energy-efficiency comparison

 

R32 has better thermodynamic performance with less mass required in each unit of cooling capacity. So it will provide a higher efficiency in air compressing and energy utilization. The data shows, under the same conditions, the EER of R32 air conditioners is 10% higher than those with R410A.

 

 

IV. Operation safety comparison.

 

R410A is a non-flammable gas, which can be much safer when using; R32 belongs to the A2L class, which is slightly flammable. Well, it does not mean R32 is not safe. It is absolutely reliable with reasonable designs and regulated operations. It is the fact that many countries and regions include R32 in the standard of air conditioning refrigerants.

 

Notice: Proper installations, ventilation designs, and refrigerant management are key points of ensuring the safety of R32.

 

V. Market trend and policy orientation

 

A number of international organizations and countries are now pushing the elimination of high GWP refrigerants. For example:

• UN F-Gas Law: It steadily limits the use of high-GWP refrigerants.
• Japan and Australia: They are widely pursuing R32 as an alternative to R410A;
• China: Some mainstream AC manufacturers had already chosen R32 as the main gas equipped in the exporting models.

Under such a trend, picking R32 air conditioning products is not only suitable for the environmental protection trend but also more capable of market competition.

 

VI. Why is R32 the mainstream in the future?

Comparative dimensions	R410A	R32
GWP value	High (2088)	Low (675)
Energy efficiency	Normal	High
Flammability	Non-flammable	Slightly flammable (A2L)
Cost	Stable	Slightly higher (but decreasing)
Policy trends	Phasing out	Widely recommended and adopted

 

It needs more security management during the transportation and use of R32 refrigerant, but the comprehensive advantages in environmental protection, energy efficiency, and market trends make it the future direction of air conditioning refrigerant.

 

As a manufacturer, dealer, or consumer, acknowledging the performance and trend of refrigerants is of vital importance to making wise decisions. R32 is not only a refrigerant innovation but also a vital step towards a green future.

If you are interested in R32 air conditioning solutions, welcome to contact the KRG air conditioning team. We can provide professional, environmentally friendly air conditioners for exports, supporting your business in the global market trend.

Ceiling cassette air conditioners (also known as ceiling mounted air conditioners) are widely used in residential and commercial circumstances. But if air supply is not reasonable, then "dead corners" are easily formed, which influence comfort and energy efficiency. Below are tricks to optimize the air supply and avoid dead corners:

 

I. Optimize the angle and speed of air supply

 

1. Adjust the angle of air outlet reasonably

 

In summer, for cold air, it should face downward 15° -30° to strengthen the coverage of lower cooling.

In winter, for warm air, it should face horizontally or a bit upward, utilizing the rising hot air to achieve even heating in the whole room.

 

2. Adjust the wind speed and swing mode.

 

Using the auto swing function (up/down, left/right) to achieve dynamic circulation and break the static airflow layer.

Moderate wind speed could avoid a sense of strong wind or weak wind in some areas, which are created by too close or too far air supply.

 

 

II. Design of air inlet/outlet

 

3. Rational layout of air outlet.

 

4-way cassette air conditioners should ensure that the vents are not blocked by lamps, beams, columns, etc., avoiding local short circuits.

2-way cassette air conditioners should avoid the vents facing walls directly.

 

4. Keep a distance between air inlet and air outlet

 

Ensuring there is enough distance for air circulation, preventing "short-circuiting air supply" (the air outlet returns directly to the air inlet).

The air inlet should be set in the middle of the room or close to the crowd activity zone, improving air circulation efficiency.

 

 

III. Coordination of environmental and spatial factors

 

5. Coordination of indoor decorations

 

Avoid large home appliances, curtains, etc., that block the airflow path.

Utilizing the reflection surface (such as the ceiling) to help the airflow division evenly.

 

6. Divide the control system by areas.

 

For large spaces, we suggest using multiple air conditioners for zoned air supply and with temperature control probes. It helps to prevent overcooling in the center and overheating in the corners.

 

 

IV. Actual operation and maintenance

 

7. Clean the filter and air vent regularly

 

Blockage will seriously affect the air supply effect, resulting in weak airflow and uneven heating and cooling.

 

8. Adopt an intelligent control system

 

Combined with temperature sensors, variable frequency compressors, and intelligent wind speed regulation, it could dynamically adjust the air supply to achieve balanced cooling/heating.

 

We are a professional ceiling cassette air conditioner manufacturer in China. If you have any problems with how to choose an air conditioner, please contact us for help. We'd be happy to cooperate!