Indian climate-tech startup Optimist has entered the air conditioner market with a 1.4-ton 5-star inverter split AC ...

Climate-tech startup Optimist has developed a next-generation air conditioning system capable of operating efficiently in ...

Accel and Arkam Ventures back the startup, founded by Urban Ladder's Ashish Goel, as it develops energy-efficient cooling ...

As climate change brings hotter summers, AC manufacturers are positioning sleek window units as lifestyle accessories. Some of them are less effective than they are stylish. By Callie Holtermann Last ...

The unit has three modes: cooling, fan, and dry. Cooling and fan are pretty straightforward while dry actually turns the unit ...

Why mess with window units if you don’t have to? Easy setup, effective cooling, and portability are just a few reasons to ...

I have years of experience testing top home and kitchen products. We've sent this story to your inbox. Portable air conditioners are worth buying in many situations. Many models are now designed for ...

On a hot, oppressively muggy summer day in a city like New York or Atlanta, when you crank up the AC, it might not feel like it’s working well. That’s because conventional air conditioners aren’t ...

The 9,000-BTU system can be used for heating and cooling in spaces up to 350 square feet, and it comes with a 16-foot line ...

This is the most feature-packed portable AC I've used—and I didn’t pay for it in my energy bill.