Purchase the 1.5 and 1.0 premium one, free WiFi module. The 1.5hp one is in my bedroom, typically only switch on from 6pm onwards until 9am the next morning. Estimated Power consumption around 3 kwh per day , shown in the apps. Power consumption is lower as the outdoor temperature is lower on nighttime, delta T is less. My only complaint is the noise is slightly higher compared to my Mitsubishi Electric Aircond. Been using for about 8 months. So far so good