Estimate cooling cost from room size, watts per square foot and usage.
Room area times a watts-per-square-foot estimate gives the cooling load, which is then priced by run time and rate. Scaling cooling power to room size shows why oversized units waste energy and why sealing a room cuts the bill.
Room Cooling Cost
Power = room sq ft x watts per sq ft; cost = kW x hours x rate
Power = room sq ft x watts per sq ft; cost = kW x hours x rate Room area times a watts-per-square-foot estimate gives the cooling load, which is then priced by run time and rate.
Scaling cooling power to room size shows why oversized units waste energy and why sealing a room cuts the bill.
This calculator takes 4 inputs: Room size, Watts per sq ft, Hours per day, Electricity rate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.