For rooms up to 180 square feet, the Panasonic CS/CU-KU18ZKYF1 1.5-ton Split Air Conditioner is a great option. This AC's 7-in-1 convertible mode enables you to change the cooling power, saving energy and creating a cosy interior atmosphere.This energy-efficient air conditioner uses a continuous approach to enhance indoor air quality and can be easily integrated into standard air filtration systems. The integrated filters improve indoor air quality by mechanically capturing and removing airborne pollutants like dust and pollen.