Looking for a luxury stay?
Book a Home
Summer-Proofing Your Vacant Dubai Holiday Home: AC & Humidity Care

Summer-Proofing Your Vacant Dubai Holiday Home: AC & Humidity Care

Heading out of Dubai for the summer? Discover the ultimate guide to protecting your vacant holiday home with simple AC care, DEWA-recommended thermostat settings, and proven humidity control tips.

18 May 2026
LUXE Team
5 min read

Preparing Your Dubai Property for Summer

As the intense heat of the Dubai summer begins, many property owners, expats, and investors travel abroad. Whether you are taking a long vacation or managing a short-term rental between guests, leaving a property empty during the UAE summer needs careful planning.

The Dubai climate presents a unique challenge. Outside, temperatures are very high, with airborne sand and strong sun. Inside an empty home without air conditioning, trapped air and high humidity create the perfect environment for mold, bad smells, and damage to furniture.

Summer-proofing your vacant holiday home is about finding the right balance. You want to protect your property while managing your DEWA (Dubai Electricity and Water Authority) bills. In this guide, we will show you how to keep your property safe while you are away.

Why Keeping the AC On Is Essential

A common mistake property owners make is turning off their air conditioning (AC) completely when they leave. While this might seem like a good way to save money, it can cause expensive damage.

In Dubai, indoor humidity rises very quickly when the AC is off. Studies show that when indoor humidity goes over 65%, mold can start growing on walls and fabrics in just 24 to 48 hours.

AC systems do more than just cool the air; they also act as dehumidifiers. As warm air passes over the cold coils inside your AC, moisture is removed from the air. Running your AC on an 'away' setting is essential to keep indoor humidity below the safe limit of 60%.

Finding the Right Thermostat Setting

Setting the thermostat correctly is the most important step. You need enough cooling to keep the air dry, but you do not want to waste energy cooling an empty home.

DEWA Recommendations

For homes with people living in them, DEWA recommends setting the AC to 24°C to save energy. However, when your property is empty, you can set it slightly higher.

The Ideal 'Away' Temperature

Property experts suggest setting the thermostat between 25°C and 27°C when the home is empty. At this temperature, the AC runs enough to remove moisture and keep humidity below 60%. This also helps keep your DEWA bill lower.

If you have a large villa with multiple cooling zones, make sure all zones have the same setting. Closing room doors and turning off the AC in those rooms can create high humidity and mold in those specific areas.

AC Maintenance Checklist Before You Leave

Your AC will work hard while you are away. To make sure it runs safely and well, do some basic maintenance before you travel.

Clean or Replace AC Filters

In the UAE, dust in the air means AC filters get dirty quickly. It is best to clean or replace your AC filters every 30 to 60 days. A dirty filter blocks airflow, making the system work harder, which can lead to ice on the coils and system breakdown. Start your summer trip with a clean filter.

Clear AC Drain Lines

When your AC removes humidity from the air, the water drops into a pan and flows out through a drain pipe. Blocked drain pipes are a top cause of indoor water leaks in Dubai apartments. Dust and water mix to create mud that blocks the pipe. Ask a professional to clean this line before summer starts.

Check Outdoor AC Units

If you own a villa, your AC has an outdoor unit. Dust on these outdoor coils traps heat and makes the AC less efficient. Make sure the outdoor unit is gently washed and free of dirt.

Schedule Professional AC Maintenance

While you can change filters yourself, a deep clean requires experts. Professional AC maintenance should happen twice a year, especially right before summer. If you use a property management company, ask them to handle this. You can learn more about how we manage homes through our services.

Other Ways to Manage Humidity

Your AC is your main defense, but there are other simple steps to protect your empty property.

Block the Sun with Blackout Curtains

Direct sunlight heating up rooms through windows forces your AC to work harder. Closing heavy blackout curtains can reduce the heat by up to 70%. Keeping the curtains closed helps your AC maintain the 25°C to 27°C setting much easier.

Protect Your Plumbing Pipes

The pipes under your sinks and floor drains have a curved section (called a P-trap) that holds a small amount of water. This water blocks bad sewer smells and bugs from entering your home.

In the dry heat of an empty Dubai apartment, this water can dry up in a few weeks. To stop this from happening:

  • Put stoppers in all sink drains.
  • Pour a very small amount of vegetable oil down the floor drains before you leave. The oil floats on the water and stops it from drying up quickly.

Smart Home Technology for Summer

For true peace of mind, it is helpful to know what is happening in your property while you are away.

Using a smart Wi-Fi thermostat is a great investment for holiday home owners. These devices let you check indoor temperature and humidity from your phone. Many smart thermostats will also send you an alert if the temperature suddenly goes up, which might mean the AC is broken.

Finding out about a broken AC on the first day lets you send a maintenance team right away, avoiding a mold disaster later.

Frequently Asked Questions (FAQ)

What temperature should I set my AC to when away from Dubai?

For empty properties, set your thermostat between 25°C and 27°C. This keeps the AC running enough to remove humidity without causing high energy bills.

How quickly can mold grow in an empty Dubai apartment?

If the AC is off and humidity goes over 65%, mold can start growing on fabrics and walls within 24 to 48 hours.

Why do AC units leak water inside?

The most common cause of indoor AC leaks is a blocked drain pipe. Dust and moisture create mud that stops the water from flowing out, causing it to overflow into the ceiling or walls.

How often should I clean AC filters in the UAE?

Because of the fine desert sand, AC filters should be cleaned or replaced every 30 to 60 days to keep the airflow strong.

Why does my apartment smell bad when I return from a trip?

This is usually because the water in your sink or floor drains has dried up, allowing sewer smells to enter. Running water down all drains for a few minutes will usually fix the problem.

Professional Care for Your Holiday Home

Managing a property from far away can be stressful, especially during the extreme UAE summer. Keeping up with AC maintenance, humidity, and sudden repairs needs a reliable local team.

At LUXE Vacation Homes, we make property ownership easy. From regular maintenance to emergency help, we keep your investment in top condition. If you are a property owner looking for professional management, get a free estimate today to see how much your property could earn.

For any questions about protecting your property, feel free to contact us, or read more on our blog for more tips on Dubai real estate and holiday home management.

References

Get Property Tips Straight to Your Inbox

Get Dubai property insights, investment tips, and exclusive owner guides. No spam — we promise.

By subscribing, you agree to our Privacy Policy and consent to receive updates.