Portable AC cost calculator
How Much Does a Portable Air Conditioner Cost to Run?
Estimate the cost of running a portable air conditioner from its wattage, hours of use, and your electricity price.
Cost estimate
Calculate your electricity cost
Estimated energy use0 kWh/day
Estimated monthly energy0 kWh/month
Cost = watts ÷ 1,000 × hours used × electricity price.
Example
How the starting estimate works
At 1,200 watts for 8 hours per day, the starting example uses 9.6 kWh per day if the compressor were drawing that power continuously.
Real-world use
Cooling equipment cycles with the room load.
A portable AC may cycle its compressor rather than draw full rated power every minute. Room size, outdoor temperature, thermostat setting, and hose configuration all affect actual consumption.
Portable ACs move heat through a hose
Room conditions and hose setup affect runtime.
A portable air conditioner removes heat from indoor air and exhausts it through a hose. Poor window sealing, a long or hot exhaust hose, direct sun, and air leakage can increase the cooling load and keep the compressor running longer.
Single-hose vs dual-hose behavior
Different designs can perform differently in the same room.
Single-hose units can create negative pressure that pulls replacement air into the room from elsewhere. Dual-hose designs separate intake and exhaust air paths. The calculator does not model those airflow differences directly, so measured average power and actual runtime are better inputs than capacity labels alone.
Thermostat cycling
Rated wattage is not necessarily the hourly average.
Once the room approaches the set temperature, the compressor can cycle. On a very hot day it may run much more continuously. Estimate representative active hours or use a plug-in energy monitor if the unit is compatible.
For broader cooling context, see What Uses the Most Electricity in a Home?.