How much power your air conditioner really uses, what size generator or inverter you need, and how to estimate running costs in Nigeria. Not sure what a term means? Check our AC Glossary and FAQ hub.
A typical 1.5HP (12,000 BTU) air conditioner uses about 0.5 to 1 kWh of electricity per hour on a hot day, even though it draws about 1.2 kilowatts while the compressor runs. The common sizes compare like this: Size (retail…
A standard split, window, central, or portable air conditioner does not raise your water bill because it cools with refrigerant, not water. Only evaporative coolers and water-cooled systems use water you pay for. The water every AC drips out is…
Most air conditioner power consumption calculators give you a number that never matches your actual bill, because they multiply nameplate wattage by hours and stop there. The calculator below does the same base math, but it also accounts for how…
An air conditioner’s power requirements come down to four numbers: the amps it draws while running, the voltage it needs, the breaker or switch that protects its circuit, and, if you’re planning for an outage, the much higher surge watts…
A ductless mini-split typically uses the least electricity per hour of cooling, running on roughly 600 to 1,500 watts depending on size and technology, well below the 2,275 watts a central air system draws on average. But the lowest energy…
“AC frequency” means three different things, and most people think it’s a one-way explanation. Understanding which one applies to your situation determines whether your unit is safe to run, how fast it cools, and whether your power source is the…
The nameplate rating on an air conditioner is the set of electrical and identification values printed on the metal or vinyl label attached to the unit: voltage, amperage, minimum circuit ampacity (MCA), maximum overcurrent protection (MOCP), and the model code.…
1.5HP AC wattage isn’t one number, and the single figure most calculators give you, 1,119 watts, is the wrong place to start. A standard 1.5HP air conditioner actually draws 1,100 to 1,500 watts while running, not 1,119, because that textbook…