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8 ways to lower your air conditioning bill this summer

1. Upgrade your windows

If your home has old windows, they might not be energy efficient. You can cut the costs of cooling your home by installing new energy-efficient windows. Some upfront cost is involved, but you’ll make it up in the long run with lower bills.

2. Seal your windows

Poorly sealed windows leak air, which makes your air conditioning system work harder. Caulking leaks or cracks and weather stripping your windows will prevent cool air from leaking out of your windows.

3. Install a programmable thermostat

Programmable thermostats cut energy usage by adjusting temperatures while you’re away or asleep. You can program them yourself or purchase one that slowly adapts to your temperature preferences. Some can even be set up with an app away from home.

4. Use ceiling fans

Ceiling fans circulate cool air, taking some of the burden off your air conditioning system. Use your existing ceiling fans (or install them throughout the house) to increase energy efficiency.

5. Replace your HVAC air filters

Air filters keep your HVAC system running smoothly by preventing dust from blocking your vents and promoting air circulation. If the filters are dirty, your system will have to work harder to circulate air.

You’ll want to replace your filters at least every few months, and possibly more if you have pets or kids. Luckily, air filters are cheap and easy to switch by yourself.

6. Reduce the sunlight

Sunlight streaming in through your windows raises the temperature of your home. By blocking the sunlight, you can calm that effect. Planting some shade trees outside your windows can curb encroaching sunlight while blackout shades or curtains are another low-cost option.

7. Insulate your walls and attics

Windows aren’t the only part of your home that leak air. Attics, walls and crawl spaces lose air as well. Professionally insulating your home is one of the best ways to increase energy efficiency. If you have an older home, this could be worth the investment.

8. Find lower ground

Heat rises, so avoid the upper floors of your home as much as possible. By doing this, you can probably leave your thermostat set to a higher temperature for longer periods during the day. You can lower the temperature at night if your bedroom’s upstairs.

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How to save money on your DEWA bill

General Conservation Tips


  • Keep your thermostat set at 24 degree Celsius, or higher, and on “auto,” not “on.” Each degree can mean up to 9% savings on cooling costs.
  • If your central or room air conditioner is more than 10 years old, it could be doubling your cooling costs.
  • Use ceiling fans to circulate air. They use about as much electricity as a light bulb and can make you feel comfortable at higher thermostat settings. Oh, and do not forget to turn fans off when you leave the room.
  • Clean or replace your air conditioner filter monthly so your air conditioner runs efficiently.
  • Plan ahead! Schedule heat-producing activities like laundry, ironing, and cooking at cooler times of day when possible.
  • Turn off lights when not needed, especially incandescent and halogen types.
  • Be aware of temperatures! If it’s cooler inside than outside, then close all windows and drapes. If it’s cooler outside, open everything up to ventilate and let the outside air cool your house.
  • Use drapes, shades, awnings and reflective materials to reduce the heat entering through glass.
  • Use room exhaust fans in the kitchen, laundry and bathroom to pull hot, humid air up and out.
  • Apply weather stripping and caulking around all doors and windows to keep the chilled air inside your house.
  • Install a setback thermostat (Clock thermostat) that automatically switches your air conditioner to a higher cooling setting while you are away.


  • Turn off lights that are not needed.
  • Benefit from natural daylight as much as possible.
  • Use Induction Lamps and LED for outdoor lighting because of their longer lifespan and higher-efficiency compared to equivalent conventional lamps.
  • Use LED, CFL light lamps and T5 fluorescent light tubes for indoor lighting because of their longer lifespan and higher-efficiency compared to equivalent conventional lamps and tubes.
  • Clean your light bulbs regularly, since dirt limits diffusion of light and decreases illumination.
  • Use timers or motion-detectors with lamps where applicable.
  • Make sure to dispose the lamps properly.