effiworkx website site logo

Air conditioner power consumption and electricity cost

Find out the power consumption and calculate or monitor the electricity usage of your air conditioner to avoid surprises when you get the electricity bill.

How much power does an air conditioner use

The power consumption depends on the model but, in average, an air conditioner uses around 1500 Watts.

Still, central air conditioner units can use up to 3500 Watts while small portable air conditioner units can use as little as 700 Watts.

If you would like to know the power consumption of your air conditioner, most probably you can find the electricity usage on the unit’s specifications label.

Alternatively, you can search for the device specifications on the internet.

As shown on the picture below, we have searched for an specific model and on the manufacturer’s website we have found the power consumption details.

Air conditioner electricity usage and electricity cost

Once you know the power consumption of an air conditioner, you can easily estimate the electricity usage and the electricity cost.

For example, according to its specifications, this air conditioner consumes 1300 Watts (W) or 1,3 Kilowatts per hour (kWh). 

1300 W / 1000 = 1,3 kWh

Just note that the power consumption is only a rough estimation because it will vary depending on the settings. 

For example, a lower fan speed will most probably will use less power than a medium or higher fan speed.

How to calculate power from voltage and current

If you only know the voltage and current of your air conditioner unit, you can calculate the power consumption, in Watts, using the calculator below.

 

For more information about Power, Voltage and Current, scroll down to the ‘Electricity Measurement Units’ section.

Air conditioner electricity cost calculator

Once you know the power consumption, the calculator below can be used to estimate the electricity cost of an air conditioner over a period of time.

You just need to adjust the values in the PARAMETERS section to your requirements and the calculator will automatically display the RESULTS section.

 

For example:

> If your air conditioner has a power rating of 1300 Watts

> If you use it for 10 hours a day and 150 days per year

> If you are paying 0,217 euro (or dollars or pounds, or…) per every kWh you consume 

You will be paying around 2,8 euro (or dollars, or pounds, or…) per day and around 423 euro per year in electricity costs.

How much does electricity cost

If you don’t know how much you are paying per kWh, you should be able to find the cost per kWh on your electricity contract or in one of the electricity bills.

As an example, the user from the picture below is paying 31,90 cent per kWh.

Nowadays it is very common that the electricity contract details, the monthly or yearly electricity usage and electricity cost can be access online.

how much does electricity cost

Alternatively, if don’t have access to your contract or your electricity bills, this website does show the electricity cost per country.

Home appliances and devices electricity calculators

A few other examples from our ‘Electricity usage and electricity cost calculators‘ page that may be of your interest:

Air conditioner electricity usage monitor

If you want to know the exact electricity usage of an air conditioner, your best option is to use a plug in power meter to measure the exact power consumption and electricity cost. 

Clicking on the image below it will redirect you to the Amazon page where you can have a look to the specifications of the power meter we use for our measurements.

plug in power meter

All of our house appliances and devices like the washing machine, the dishwasher, the TV or the printer are plugged to a wall socket. 

So, with a power consumption meter we can determine how much electricity our appliances or devices are using and, more importantly, we can measure the electricity usage over a period of time.

If you want to find out how you can use a plug in power meter to measure your electricity usage and electricity cost, have a look to this YouTube video.

Plug in power meter

How to lower the electricity bill of an air conditioner

These are some simple and effective way to reduce the electricity usage and the electricity cost of an air conditioner:

1.- Use the thermostat and timer

Every single degree counts and by adjusting your conditioner by just one degree you could save up to 10% on electricity.

Use the thermostat to setup the temperature to a comfortable but reasonable threshold. And se the timer to power off and on the air conditioner so it is only working when when needed.

2.- Use curtains and blinds

The curtains and blinds will help with keeping your home cooler. If you are living in a warm area and using a lot of electricity and money to keep your home cool, it may be worth to install some thick curtains to keep the sun rays away.

3.- Power down those heat emitting appliances and devices

It may not always the possible or feasible but turn off those appliances and devices that emit heat. The thermostat will have to work harder to compensate for the temperature increase and will consume more electricity.

thermal camera appliances heat loss

4.- Improve your home’s insulation

Also, if your home is not well insulated the heat will permeate and force the air conditioner to consume more and more electricity to keep the temperature set in the thermostat.

House insulation thermal image

5.-Keep your air conditioner well maintained

Most of the air conditioners require regular maintenance. For example, cleaning the coils, cleaning the filters, check the fins…

If the air conditioner it is not well maintained, it’s efficiency may decrease which may lead to an increased power consumption and electricity cost.

Air conditioner electricity usage FAQ

How many watts does an air conditioner use

The power consumption of an air condition unit depends on the model but, in average, they use around 1500 Watts.

How much energy does an air conditioners use

Even though energy and power are different terms, in this contest they have a similar connotation.

The power consumption of an air condition unit depends on the model but, in average, they use around 1500 Watts.

How much electricity does a central air conditioner use

Even though electricity and power are different terms, in this contest they have a similar connotation.

The power consumption of an air condition unit depends on the model but, in average, they use around 3500 Watts.

How much electricity does a portable air conditioner use

It very much depends on the model.

Some portable air conditioners use a little as 700 Watts per hour and some other use up to 3500 Watts per hour.

Of course, in general, an air conditioner with a higher wattage will be able to cool a bigger space.

Electricity measurement units

Not everybody it is familiar with terms like Watts, Kilowatts or Kilowatt hours so if you would like to learn more about them, have a look to this YouTube video that we have prepared about this topic.

What is a Kilowatt hour (kWh)

Electricity measurement units calculators

Or you can have a look to this electricity measurement units calculators to get a better understanding of:

> What is a Watt (W) and how to transform Watts into Kilowatts

> What is a Kilowatt (kW) and how to transform Kilowatts into Kilowatts hour

> What is a Kilowatt hour (kWh) and how to transform Kilowatts hours to other units

> What are Power (P), Voltage (V) and Current (I)

Watt (W)
Watt (W) wattage calculator
Kilowatt (kW)
Kilowatt (kW) calculator
Kilowatt hour (kWh)
Kilowatt hour (kWh) calculator
Power, voltage, current
Power, voltage, current calculator

Air conditioner and energy conservation

Energy conservation can be defined as the decision and the act of using less energy

Energy conservation both benefit you and the environment

The act of saving and conserving electricity does benefit you because you will be paying less on your energy bills. 

And it also does benefit the environment because conserving electricity prevents any unnecessary waste of natural resources.

Now, at individual level it may not look worth to try to save a few watts here or there. 

Still, every little counts and if hundreds or thousands of us do save a little every time, it will make an important contribution towards conserving our natural resources.

Energy conservation calculator

If we could reduce the electricity usage of our air conditioners, even a very small amount, it would make a big impact on preserving our natural resources.

 

For example, if 9000 households would manage to save as little as 10 Watts per day (0,01 kWh) on air conditioner electricity usage, that would add to 32850 Kilowatt hour (kWh) saved per year. 

9000 households x 0,01 kWh per day x 365 days per year 

32,850 kWh saved per year

That is a considerable amount of electricity, but let’s add additional perspectives for clarity:

> Assuming an average cost of 0,18 euro (or dollars, or pounds, or any other currency) per kWh, we would collectively be saving nearly 6000 euro per year.

> To produce 32,850 kWh of electricity it is necessary to use around 17 metric tons of coal or 56 barrels of residual fuel oil.

Have a look to this page for more information about the amount of resources needed to produce electricity.
 

In any case it is clear that small energy savings do really count when looking into the bigger picture.

Proven ways to save electricity at home

If you are looking for ideas to save electricity at home, have a look to this YouTube video were we show some useful tips to reduce the electricity usage at home and decrease the electricity bill. 

How to save electricity at home
How to save
How to save
How to earn
How to earn

Calculators

Effiworkx blog

Dishwasher Vs Hand Washing
How to save electricity
margareth

Dishwasher Vs Hand Washing

What does save more electricity, water, time and effort, washing the dishes by hand or using a dishwasher?
There is no need to guess… let us show you what are our results and conclusions.

Read More »
5/5

This site contains affiliate links and we will earn an affiliate commission for any purchase you make, without any cost to you. 

All content found on this website is intended for informational and educational purposes only.

For more information, read the ‘terms of use‘ and ‘disclaimer‘.

The content is not intended to be a substitute for professional advice or consultation.

© 2022 Effiworkx. All rights reserved

SHARE