Energy efficiency is one of the most important factors that consumers are taking into account when buying a new window type aircon. Needless to say, it will have a big impact on your electricity bill. If you are particularly sensitive to the monthly operating cost of your air conditioner, it is important that you know the wattage of an aircon model before you buy it.

Using data that I’ve collated and analyzed, the wattage of window type air conditioners is **1,118W per hour** **(or 1.118 kWh)** on average. This means that if the power rate is at **₱9.744/kWh**, and that you’ll use your aircon for 8 hours everyday, then you should estimate that your air conditioner will contribute at least **₱87.2 per** day or **₱2,616 per month** to your electricity bill. Keep in mind though that window type aircons differ in wattage depending on their capacity.

In this article, we will give you the average wattage of each capacity of window type aircon, how to calculate its power consumption per month, and what you can do to lower your aircon’s contribution to your electricity bill.

## How to know the wattage of a window type aircon

If you look at the energy guide label stuck on the front of a window type aircon, you’ll see its power consumption indicated in watts (W). If it still needs pointing out, this is the wattage of the aircon. Alternatively, you can see it in the model’s rating label on the side of its body.

Knowing the model’s wattage is necessary if we want to calculate its power consumption.

Since energy providers use kilowatt hours (kW) in their power rate, we need to convert the watt figure to kilowatts if we want to calculate the estimated power consumption of a certain model. This is done by simply dividing the wattage by 1,000.

With this, we can calculate the power consumption of an aircon using the following equation:

(*Wattage/1000) x Hours of use x Power Rate = Daily Electricity Cost*

## Wattage and power consumption of window type air conditioners per capacity

For the following data, we will be using this list from the Department of Energy (DOE). We’ve parsed the data for you to make it easier to understand. We also used Meralco’s power rate of ₱9.744 per kWh, which is the average rate of all residential Meralco customers^{[2]}. We will also assume that you will use your aircon for 8 hours every day.

Capacity | AverageWattage | AveragePower Consumption | Power Rate (kW/h) | Cost Per Day | Cost Per Month |

0.5HP | 526W | 0.526 kW/h | ₱9.744 | ₱41.03 | ₱1,230.92 |

0.6HP | 550W | 0.550 kW/h | ₱9.744 | ₱42.89 | ₱1,286.87 |

0.75HP | 702W | 0.702 kW/h | ₱9.744 | ₱54.72 | ₱1,641.67 |

1.0HP | 920W | 0.920 kW/h | ₱9.744 | ₱71.73 | ₱2,152.04 |

1.5HP | 1,231W | 1.231 kW/h | ₱9.744 | ₱96.00 | ₱2,880.14 |

2.0HP | 1,810W | 1.809 kW/h | ₱9.744 | ₱141.06 | ₱4,232.08 |

2.5HP | 2,425W | 2.424 kW/h | ₱9.744 | ₱189.00 | ₱5,670.15 |

Due to the limitations of the data set, only non-inverter models are presented here. However, we wrote a deep dive on the difference between inverter and non-inverter air conditioners, check it out here.

## What is the lowest wattage model in each capacity?

To cut to the chase, I listed the model with the lowest wattage in its capacity here:

Capacity | Model Name | Wattage | Difference vs. Average Wattage |

0.5HP | Carrier WCARZ006EC | 495W | 5.9% |

0.6HP | American HomeAHAC-6204 | 500W | 9.1% |

0.75HP | Carrier WCARZ008EE | 580W | 17.4% |

1.0HP | American Home AHAC-92MNT | 800W | 13.0% |

1.5HP | Mabe MEV12VV | 1,151W | 6.5% |

2.0HP | Markes MWA-180 | 1,580W | 12.7% |

2.5HP | Gree U-J24-3NM | 2,186W | 9.9% |

Most of these models are available through Lazada, go check them out!

## Conclusion

Now that you know how to determine the wattage of an aircon, and can now estimate its power consumption, you can now make a better choice when deciding the best aircon model for you.

However, keep in mind that these are just estimations. Proper usage habits and regular maintenance will determine whether your electricity bill will be high or low.