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, you must 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 every day, then it is estimated 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
You should know a particular model’s wattage. if you want to calculate its power consumption. Here’s how you can check the wattage of an AC unit.
- Energy Guide Label – 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).
- Rating Label – Alternatively, you can see it in the model’s rating label on the side of its body. Depending on the make and model of the aircon, it may display both rated input and cooling input. For our purposes, let’s use the rated input figure.
- Operation Manual – The product’s essential specifications like the wattage, frequency, and dimensions are usually shown in the operation manual.
- The maker’s website – if you have thrown away the energy label and the operation manual and cannot access the rating label anymore, then you can always check the manufacturer’s website for its specifications.
Since energy providers use kilowatt-hours (kWh) in their power rate, we need to convert the watt figure to kilowatts (kW) 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 estimate 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. We will also assume that you will use your aircon for 8 hours every day.
|Capacity||Average Wattage||Average Power Consumption||Power Rate (kW/h)||Cost Per Day||Cost Per Month|
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 models with the lowest wattage in its capacity here:
|Capacity||Model Name||Wattage||Difference vs. Average Wattage|
|1.0HP||American Home AHAC-92MNT||800W||13.0%|
Most of these models are available through Lazada, go check them out!
While these models have the lowest electric consumption figures in their class, there are a lot more models available in the market that are also energy efficient – you’ll only need to do your research diligently to get the best air conditioner model for you.
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 on 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.
Miguel Mores worked for 5 years as a member of the product management team for a home appliance company in the Philippines. He started 101appliance to answer the most common customer questions that he has encountered during his time in the industry. He now works in the digital marketing field and manages a small online bookstore on the side.