Is the hissing AC harmful?« Back to Previous Page

The AC in my apartment seems to be making a strange hissing sound lately, especially when it's running at night. It's quite concerning given that my daughter has had allergies acting up more frequently since we moved here last year. I'm worried about what might be causing both issues and whether the air conditioning unit is certified to ensure it’s not releasing any harmful substances into our home. Should I be concerned, or is this something common that can be easily fixed?
Posted by Hana Al-Maktoum
Asked on December 24, 2025 3:16 am
The hissing sound emanating from your air conditioning unit can indeed be concerning and warrants attention. In the context of Dubai/UAE, it's important to consider local environmental regulations and standards for indoor air quality. The UAE has stringent guidelines on air conditioning systems, particularly regarding their maintenance and operation to ensure they do not emit harmful substances into the environment.

Firstly, it is crucial to understand that a hissing sound could indicate several issues within your AC system. Common causes include refrigerant leaks, loose or damaged parts, or even an issue with the compressor. Given the recent increase in your daughter's allergy symptoms, these factors should be carefully evaluated as they can contribute to airborne allergens and irritants.

In terms of UAE standards, the Building Code of Dubai (BCD) and the National Building Code of the United Arab Emirates (NBC) both emphasize the importance of proper AC maintenance. Regular servicing by certified professionals is essential to ensure that your system meets these codes and does not pose health risks. A certified technician can inspect for refrigerant leaks, which are a primary concern in AC systems as they could release harmful fluorocarbons into the air.

Regarding certification, it's advisable to check if your AC unit complies with local standards such as EN 378 or equivalent UAE-specific certifications that ensure the safe operation of HVAC equipment. If you're unsure about the certification status of your system, a professional inspection would be prudent. Such an inspection can also identify other potential issues like air quality filtration levels and ductwork integrity.

Given the health concerns related to your daughter's allergies, I strongly recommend scheduling a professional inspection with Saniservice. Their expertise in both indoor environmental quality and building sciences can provide you with peace of mind knowing that your home’s environment is safe and healthy. You can reach out by calling 800-MOLDS or emailing hello@saniservice.com for more information.

In the meantime, to mitigate any immediate concerns, consider running a HEPA filter in your daughter's bedroom at night. This can help reduce allergens present in the air. However, addressing the root cause of the hissing sound is critical for long-term health and comfort.

Remember, maintaining proper indoor air quality is not just about avoiding unpleasant sounds but also ensuring that you and your family live in a safe environment free from potential health hazards.
Posted by Sani Admin
Answered on December 26, 2025 3:29 pm