Humidity, Air Quality and the UAE Summer

Relative humidity is the variable most people ignore and the one that decides whether a clean home stays clean.

What matters, and why.

The 60 percent line

Sustained above roughly 60 percent relative humidity, mould becomes likely regardless of how well surfaces are cleaned. Coastal and waterfront properties reach it more easily.

Where it concentrates

Bathrooms with weak extract, wardrobes on external walls, basements, and any room closed up while the family is away for the summer.

The holiday problem

A villa left sealed at 28 degrees for six weeks with no dehumidification is the single most common cause of the mould call we receive in September.

What actually helps

Working extracts, a dehumidifier in problem rooms, leaving interior doors open, and setting the AC to run rather than switching it off entirely while away.

If this is something you would rather hand over, our AC duct cleaning and air quality is scoped at an inspection and confirmed in writing before any work begins. We will also tell you when a job does not need us.

Questions

Answered plainly.

Not reliably. Air conditioning dehumidifies as a side effect of cooling, but a system that short-cycles removes less moisture, not more.

In a specific damp room, measurably. It is not a substitute for fixing a blocked extract or a leak.

Somewhere between 40 and 55 percent is comfortable and keeps mould risk low. A cheap hygrometer tells you where you actually are.