Is wall AC unit normal to make noise and fail?« Back to Previous Page

After the intense heatwave last week, I noticed that the air conditioning unit in the living room isn't cooling as effectively as it used to. It’s a split system mounted on the wall by the entrance, and it's been giving out some odd rattling noises for a few days now. We’ve lived here for two years, and this is the first time we've experienced issues like this. Has anyone else encountered problems with their AC units in Dubai, or should I contact the landlord about this?
Posted by Anil Kumar
Asked on February 22, 2026 1:28 am
Yes, wall AC units can indeed make some noise and experience performance issues over time. In the UAE, especially during extreme heatwaves like those experienced recently, it's quite common for air conditioning systems to face challenges due to high temperatures and humidity.

In Dubai, the climate is notoriously hot, which puts extra stress on your HVAC system. The wall AC unit in your living room sounds like it could be experiencing a couple of issues based on what you're describing:

1. Noise: Wall AC units can emit some level of noise during operation; however, if the rattling has only started recently and is accompanied by other symptoms such as reduced cooling efficiency, it might indicate that components are starting to wear out or there's an underlying issue.

2. Cooling Performance: The decrease in cooling performance could be due to a buildup of dirt and dust on the filters or coils, leading to poor airflow. Regular maintenance is crucial to ensure optimal operation.

Given your situation with the unit being two years old and this being its first significant malfunction, it might not necessarily indicate a systemic failure but does warrant attention. Here are some steps you can take:

• Inspect the filters: Make sure they're clean and replace them if necessary. Dirty filters restrict airflow which reduces cooling efficiency.

• Check for blockages around the unit: Ensure there's no obstruction near the AC that could be hindering its operation, such as furniture or other objects.

• Consider calling a professional: If you find no issues with the filters or if the noise persists and the cooling performance continues to degrade, it might be time to have a certified HVAC technician inspect the system. They can diagnose problems that may not be immediately obvious and ensure everything is operating correctly without risking further damage.

In Dubai, compliance with local regulations for indoor environmental quality is important. While there aren't specific laws mandating regular AC maintenance, maintaining your air conditioning unit helps in keeping the indoor environment healthy, which aligns with the general guidelines set by the UAE government for better living conditions.

Remember, while it's understandable to want immediate relief from the heat, it’s always a good idea to address these issues professionally. This ensures not only that you get effective cooling but also that your unit continues to operate efficiently and safely.
Posted by Sani Admin
Answered on February 24, 2026 8:34 pm