Mold on wall from AC leak: professional cost or DIY?« Back to Previous Page

The AC in my bedroom has been leaking a little for a while, but after the recent humidity, I can now see small black spots spreading on the wall behind the wardrobe. I’m worried it’s mold and that it might be making my allergies worse. What’s the average cost for a professional mold inspection and treatment for a small area like this in Dubai, and is it worth hiring someone or can I handle it myself with a bleach spray?
Posted by Ali Bin Zayed
Asked on March 19, 2026 4:18 am
Based on your description, this is a classic case of mold growth resulting from chronic condensation and water intrusion from an AC leak, a very common issue in Dubai's humid climate. The small black spots are likely Stachybotrys or Aspergillus, both of which can exacerbate allergies and respiratory issues.

A professional inspection for a single room typically ranges from AED 500 to AED 1,200 in Dubai. This cost is justified as it includes a comprehensive assessment using moisture meters and thermal imaging to identify the full extent of the hidden moisture damage behind the wall and wardrobe, not just the visible spots. Treatment for a contained area like this can start from AED 1,500 upwards, depending on the required remediation protocol, which includes containment, HEPA vacuuming, antimicrobial application, and addressing the root cause—the AC leak.

We strongly advise against using bleach. It is ineffective on porous surfaces like drywall, as it only bleaches the surface mold without killing the roots. More critically, it can aggravate the situation by releasing a high volume of spores and toxic fumes into your breathing space, worsening your allergy symptoms.

The hidden moisture within the wall cavity is the primary concern. DIY attempts often miss this, leading to rapid regrowth. For a proper and lasting solution that safeguards your health and property, a professional assessment is essential. I recommend contacting our team at Saniservice for a precise diagnosis and quotation. Call 800-MOLDS (800-66537) or email hello@saniservice.com. Our certified technicians will ensure the mold is remediated according to UAE best practices and help you rectify the AC issue to prevent recurrence.
Posted by Sani Admin
Answered on March 21, 2026 3:14 pm