Affordable yet packed with efficiency, the Kolin Certus delivers 5-Star DOE rating with a high CSPF (up to ~5.24) for energy savings. Featuring inverter technology with “turbo” & “sleep” modes, dual filters (high-density + activated carbon), hydrophilic fins, and eco-friendly R32 refrigerant. Covers room sizes from ~17 m² to 40 m² depending on capacity (1.0-2.5 HP), runs quietly (down to ~27-33 dB in low / mid mode), and built with specs that reduce power draw while giving dependable cooling performance.