Work out ac running cost instantly with clear inputs, formula shown and shareable results.
An air conditioner's electrical draw is its cooling output divided by the coefficient of performance, so a 3.5 kW unit at COP 3.8 consumes only 0.92 kW. That is why COP or SEER matters far more than headline capacity for running cost.
AC running cost
power = cooling capacity / COP; cost = power x hours x tariff
3.5-4.5 for a modern inverter split unit at rated conditions. Seasonal figures (SEER or SCOP) are lower and more representative of real use.
Yes. Each degree of setpoint raise typically cuts consumption by 3-8%, because the temperature difference driving the heat load falls.