What should I do if the air conditioner is noisy? Summary of popular solutions across the network in 10 days
Recently, as the high temperature in summer continues, the issue of air conditioning noise has become a hot topic on the Internet. According to the analysis of social platform data in the past 10 days, the number of discussions related to "noisy air conditioners" has increased by 35% year-on-year, especially in night use scenarios. This article will combine the latest user feedback and professional suggestions to provide you with a structured solution.
1. Ranking of causes of air-conditioning noise (user complaint data in the past 10 days)

| Cause of noise | Proportion | High frequency keywords |
|---|---|---|
| The outdoor machine bracket is loose | 32% | "Sound of metal clashing" and "sudden noise at night" |
| Fan accumulates dust | 25% | "Buzzing" "Wind weakening" |
| Refrigerant flow sound | 18% | "Sound of water flow" and "new machine abnormal noise" |
| Compressor aging | 15% | "Low frequency vibration" "More than ten years" |
| Irregular installation | 10% | "Newly installed air conditioner" "Wall resonance" |
2. Actual testing of recent popular solutions
1.Douyin’s popular shock-absorbing pad method(2.8 million+ views in the past 7 days)
Use car soundproof cotton cut to the size of the outer machine base, and actual measurement can reduce 3-5 decibels. Note: It is necessary to leave a location for drainage holes.
2.Xiaohongshu recommends cleaning tips(Collection: 12,000+)
Clean the internal filter with a vacuum cleaner once a month and use it with air conditioning cleaner to reduce wind noise by 27%.
3.Suggestions from station B engineers(Top 3 videos with the most views)
When checking whether the outer machine screws are loose, it is recommended to use a torque wrench. The tightening torque reference value is:
| Screw specifications | Standard moment |
|---|---|
| M6 | 10-12N·m |
| M8 | 20-25N·m |
| M10 | 35-40N·m |
3. Comparison of noise complaints from different brands
| Brand | Number of complaints | Main questions | Silent technology |
|---|---|---|---|
| Gree | 18% | Compressor low frequency sound | Twin rotor compressor |
| Beautiful | 22% | Abnormal noise in the wind duct | Windless technology |
| Haier | 15% | Refrigerant sound | Magnetic levitation compressor |
| oaks | 25% | External unit vibrates | Shock absorbing rubber pad |
4. Professional maintenance suggestions (from highly praised answers on Zhihu)
1.Noise Diagnosis at Night
Turn off other electrical appliances and use the mobile decibel meter APP to measure:
- Below 50 decibels: normal range
- 50-60 decibels: cleaning and maintenance recommended
- Above 60 decibels: professional maintenance is required
2.Installation guide for pit avoidance
- The distance between the outdoor unit and the bedroom wall is ≥ 1.5 meters
- Avoid installation in direct sunlight
- The bracket must be made of stainless steel
5. Consumer Rights Reminder
According to the latest "Household Appliance Noise Limits" regulations:
- Cooling capacity ≤ 4500W: indoor unit ≤ 45dB
- Cooling capacity>4500W: Indoor unit ≤48dB
If it exceeds the standard, you can ask for a return or exchange within 7 days, and keep the test report.
Through the above structured solutions, 90% of air conditioning noise problems can be improved. If it still doesn't work after trying it, it is recommended to contact the official after-sales service for in-depth inspection to avoid disassembling the machine yourself and voiding the warranty.
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