What is the best window air conditioner?

All five star rated air conditioners are energy efficient irrespective of any brand.

Air conditioners (Split/ Window) are judged on star rating of Bureau of Energy Efficiency. More the stars more will be the savings. ACs installed with latest scroll technology compressor with five star rating is the best option available in the market. The proven technology in commercial sector-Copeland Scroll is now available with 2 TR spilt air conditioners.