How much electricity do air conditioners consume globally?

According to the International Energy Agency (IEA), air conditioners and fans consume about 10 percent of the world's total electricity.

By how much can the need for air conditioning be reduced?

Scientists estimate that combining alternative cooling technologies could reduce the need for air conditioning by up to 80 percent.

What are the most effective solutions for cooling without air conditioning?

The research highlights radiative and evaporative cooling systems, green roofs, materials that reflect solar heat, and advanced ventilation systems.

Can these methods also help during winter?

Yes, some of these solutions have the added benefit of helping retain heat inside buildings during winter.

Home & Garden

Smart Home Cooling: Lower Bills, More Comfort

D.V. · 05. 08. 2026. | 2 min

Research shows how smart materials and traditional methods can cut air conditioning needs by 80 percent.

Summary

The IEA warns that air conditioners already consume 10% of the world's electricity.
New research shows that the need for cooling can be reduced by up to 80% using alternative methods.
Key solutions include shading, reflective materials, green roofs, and advanced ventilation.
Applying these technologies could lower city temperatures by more than four degrees.

Make 5MIN.hr a preferred source

When summer heat becomes unbearable and electricity bills soar, relying on air conditioning is no longer the only or best solution. According to the International Energy Agency (IEA), air conditioners already consume about 10 percent of global electricity, and with more frequent heatwaves, this share is set to rise. New research offers concrete alternatives that can cool our homes without significant energy use.

Preventing Heat Entry, The First Step

A study published in the journal Nature Reviews Clean Technology, conducted by researchers from the University of New South Wales and RMIT University in Melbourne, emphasizes that air conditioning should be the last line of defense, not the first choice. The focus shifts to a proactive approach: preventing heat from entering living spaces in the first place.

The study's authors highlight that simple solutions such as quality shading, reflective materials on roofs and facades, and advanced ventilation systems can dramatically lower indoor temperatures before we even reach for the remote control.

Technologies That Cool and Heat

Among the most effective methods highlighted in the research are radiative and evaporative cooling systems. These technologies use natural processes to dissipate heat, with the added benefit of helping retain warmth inside buildings during winter. Green roofs and materials that reflect solar heat are also seen by scientists as powerful tools in the fight against overheating.

Combining these technologies, they estimate, could reduce the need for conventional air conditioning by up to 80 percent. Moreover, applying these solutions in a broader urban context could lower city temperatures by more than four degrees Celsius, depending on local climate conditions.

A Return to Time-Tested Methods

Interestingly, many of these "new" solutions rely on principles that are thousands of years old. The researchers remind us that people coped with heat long before air conditioning was invented. The ancient Sumerians, for example, built homes that allowed natural air circulation and used materials that kept interiors cool.

The study's conclusion is clear: cooling our homes should not be a luxury reserved only for those who can afford high electricity bills. Energy-efficient solutions, combining ancient wisdom with modern technology, should become the standard in modern construction, making our homes more comfortable and financially sustainable.