How Much Does It Cost to Run a Portable AC?

A portable air conditioner can add a noticeable amount to a monthly electricity bill. The cost depends on its power rating, operating hours, and electricity rate.

Use this formula: monthly cost = watts ÷ 1,000 × hours per day × days per month × electricity rate.

For example, a 1,200-watt unit running 8 hours per day for 30 days at $0.16 per kWh costs about $46.08 per month. At 4 hours per day, the same assumptions produce about $23.04.

This is an estimate. Compressor cycling, thermostat settings, outdoor temperature, room size, insulation, and the condition of the unit can change actual consumption.

Check the appliance label for wattage and use the WattBillGuide Electricity Cost Calculator for your own numbers. When comparing portable AC units, consider both cooling performance and electrical input.

Use the WattBillGuide Electricity Cost Calculator for your own numbers.