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UAE residents are divided on whether to leave air conditioners running during extended vacations. While some prioritize energy savings, others fear returning to mould-infested homes. Here’s what experts say about balancing comfort, energy conservation, and home protection.

Key Points:

1. Risks of turning off AC during long absences
2. Ideal temperature settings for vacant homes
3. Energy-saving strategies
4. Expert recommendations

Risks of Turning Off AC

1. Mould and fungus growth
2. Bad odors
3. Damage to paint, furniture, and electronics
4. Increased humidity

Dubai Electricity & Water Authority (DEWA) warns: “Fungus formation, bad smells, and damage to paint, furniture, and electrical/electronic equipment due to increased temperature and humidity inside homes” are potential risks.

Expert Recommendations

Hisham Jaber, The Healthy Home: “Running your AC continuously helps maintain optimal humidity levels, especially in humid conditions like Dubai.”

Dinesh Ramachandran, Rentokil Boecker: “In summer, when villas and apartments are left without the AC running, humidity can build up, leading to mould growth, damage to upholstered furniture and carpets, and potential health risks for occupants.”

Ideal Temperature Settings

• DEWA recommends increasing AC thermostat by 1°C to reduce electricity consumption by up to 5%
• Experts suggest setting temperature between 26°C and 28°C
• Use programmable thermostats or smart AC controls for efficient energy management

Energy-Saving Strategies

1. Install smart AC controllers
2. Clean AC filters regularly (every two months, monthly in summer)
3. Ensure proper placement and maintenance of outdoor units
4. Use weatherstripping to prevent cold air leakage
5. Close curtains and blinds before leaving
6. Consider DEWA’s ‘Away Mode’ feature for consumption monitoring

Alternative Solutions

If leaving AC on is not preferred:

• Ask a friend to run AC for 30-60 minutes daily
• Use exhaust fans in kitchens and bathrooms
• Leave cupboards, cabinets, and bedroom doors open for better air circulation

Resident Experiences

Experiences vary:

• Some report mould growth after a week-long absence
• Others have never faced issues despite turning off AC for years
• Utility bills can range from consistent year-round to “gigantic” post-vacation charges

By considering these factors and expert advice, UAE residents can make informed decisions about AC usage during long holidays, balancing home protection, energy conservation, and cost management.