Tipid advice pls

Me and my partner just move out and started to live in together we have this studio type unit 11 or 12 sqm and since we don't have enough budget we decided to buy a brand new ac window type non Inverter, nag viral kase tong store online, we have mabe ac 1hp for only 10k, and our bill ranges from 4,500 to 4,700 we only have ref, 1 fan, induction and TV for the ac naman 7 to 8 hours lang sya a day not sure if tama Lang we find it weird kase own meter naman, can you help me know the most energy saving ac