That’s why the one deal I actually shopped this Prime Day was Filtrete’s HVAC filter, which is nearly 50 percent off for a six-pack right now.

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

Now that summer is in full swing, the best air conditioners on Amazon are helpful home appliances to install in a pinch.

We tested nine units in a humid Florida home to find the best portable air conditioners of 2025. Here are the models we recommend considering for any size space.