Portable system, I have a feeling it might be using a fair bit of power, it’s in the living room which has a conservatory joining but without doors to separate so it’s set to 21C and on high for the whole time.
I meassured my old portable on a smart plug a while ago, it peaked at just over 800w, but it cycles on and off once it reaches the set temp so that's not a constant power draw. Over a week of using it overnight in the bedroom it used around 13.5kwh, bearing in mind this was a bit over a month ago so it was a lot cooler though.
I am NOT a fan of giving dogs iced wter or frozen stuff, the shock to their stomachs can cause upsets, cool water should be all they need.
I'm on Italy at the moment and everyone's still out working, but then I can buy six massive bottles of water for next to nothing, do that in Tesco it would cost a fortune 
