Every summer, thousands of Dubai families lock up the villa and fly out for six or eight weeks. Right before the airport run, almost everyone asks the same question: do I leave the air conditioning on, or switch it off to save on the DEWA bill? It feels wasteful to cool an empty house. In Dubai's summer, though, switching the AC fully off is one of the more expensive mistakes you can make.
Here is the honest answer, why it matters, and the exact setting we recommend to villa owners across the city.
Should you turn the AC off completely? No.
In July and August, an empty villa with the AC off does not just get warm. With the doors and windows sealed and the sun on the walls all day, indoor temperatures can climb past 40°C, and the humidity has nowhere to go. That combination of trapped heat and moisture is what damages a home:
- Mould and mildew bloom on walls, ceilings, inside wardrobes, and in bathrooms, often within a couple of weeks.
- Leather sofas, handbags and shoes grow a film of mould that is difficult to remove.
- Wooden furniture, doors and skirting can warp or crack as the humidity swings.
- A musty, closed-up smell settles into curtains, carpets and soft furnishings, and lingers long after you are back.
- Electronics sitting in constant heat have a harder life and can fail sooner.
Cleaning up after all of that costs far more, in money and hassle, than running the AC sensibly while you are away.
What temperature should you leave the AC at in Dubai?
The goal is not to keep the villa cool for nobody. It is to stop heat and humidity building to the point where they cause damage. The setting most Dubai facilities managers and villa owners settle on:
| Situation | Recommended setting |
|---|---|
| Villa empty for the summer | Thermostat at 26 to 28°C |
| You have a smart or humidistat thermostat | Hold humidity around 55 to 60% |
| Short trip, one or two weeks | 24 to 26°C is fine |
At 26 to 28°C the system does not run constantly. It switches on now and then to pull moisture out of the air and keep the space stable, which is exactly what you want. You get the protection without the bill of cooling an empty home to 22°C.
If your villa has zoned AC, you can raise the temperature in rooms you are not worried about and keep the main living areas and any room with leather or wood a touch cooler.
The steps that make the biggest difference before you fly
A few small jobs on the way out protect the house far more than the thermostat alone:
- Close all curtains and blinds. Keeping the sun off the glass and walls cuts the heat your AC has to fight.
- Empty and clean the fridge, then either switch it off with the door propped open, or leave it running on a low setting. A full fridge left off in a warm kitchen is a smell you do not want to come home to.
- Clear the bins and any food, run the bins out, and pour a little water down each drain and floor trap so the U-bends do not dry out and let sewer smells rise.
- Have your AC filters cleaned before you go. Clogged filters make the system work harder and recirculate dust the whole time you are away. Clean filters run more efficiently and keep the air fresher.
- Ask someone to look in every week or two, a neighbour, family, or your cleaning company. A quick check catches a tripped AC or a leak long before it becomes a mould problem.
Come home to fresh, not musty
However carefully you set the AC, a villa that has been closed up for weeks needs a proper refresh before it feels like home again. Fine dust still finds its way in, the air sits still, and soft furnishings hold that closed-up smell.
The families who do this best book two things timed to their return: an AC filter and vent clean so the first cool air you breathe is clean, and a deep clean of the whole villa a day or two before you land. You walk back into a home that smells fresh and looks cared for, instead of spending your first jet-lagged days scrubbing.
Our AC filter and vent cleaning starts from 199 AED per unit, with 10% off for three or more units. Message us on WhatsApp before you travel and we will schedule everything for the week you get back, and coordinate access with whoever is holding your keys. You can be on the other side of the world and still arrive home to a spotless, fresh-smelling villa.
