You might see an EER (Energy Efficiency Ratio) number for your portable air conditioner, which measures the cooling ...

A portable air conditioner is an excellent cooling solution that is more cost-effective and easier to install than a window ...

We've rounded up the best Prime Day air conditioner deals on our favorite portable and window units. Shop these models now ...

The power minister proposed a rule in June requiring air conditioners sold in the country to have thermostats that can be set ...

Looking to beat the heat without breaking the bank? In this video, discover how to make a simple toy air conditioner at home ...

Discover the optimal temperature to set your air conditioner in summer for comfort and energy efficiency. Learn about factors to consider, recommended temperature, and tips for finding the right ...

Shopping for a window air conditioner? Consumer Reports has tested hundreds of them. Read about types, features, and other must-know topics in our Air Conditioner Buying Guide.

The smaller apartment with the window air conditioner used only a quarter of energy this time—3 kWh instead of 11 kWh, or an average utility savings of about $1.70 per day.