Tengah Centralised aircon bill is expensive

I just moved into my new place in Tengah about a month ago, and wow, my July aircon bill was really expensive! It was $58.30 just for the Tengah Centralised aircon. I normally have it on from 8 PM to 5:30 AM, Monday to Sunday, set at 25 degrees Celsius."

https://preview.redd.it/pm5vudyxbrff1.jpg?width=1179&format=pjpg&auto=webp&s=feb7df45e9e2a62354fe3d6df30877be9594337f