Portable air conditioners are less effective and energy-efficient than other AC systems. Portable AC units are best for small spaces where you can’t use other air conditioning appliances.

The new cooling device aims to absorb heat radiating from the body to help decrease internal temperatures. Researchers at the ...

They're also more energy-efficient than portable air conditioners, especially for mid-sized rooms, as they don't require constant movement of air through ductwork or vents. While the cooling power ...

What to look for when choosing a portable AC unit Mitchell advises checking energy efficiency and capacity before shopping.

Dual-hose Portable Air Conditioners: Have two hoses-one for air intake and the other for exhaust-resulting in faster cooling and better energy efficiency compared to single-hose units. Below 8,000 ...

Window ACs are better at cooling, cost less, and are more energy efficient. If you need more convincing, I compare portable air conditioners vs. window air conditioners. The bottom line Though it ...