Air conditioner motor: what power to choose?

When looking to buy an air conditioner, one of the key features to consider is motor power. Motor power is essential because it determines the unit’s ability to cool a room, depending on its size and insulation level. In this article, we’ll look at the different types of air conditioner and the factors that influence motor power.
  1. Types of air conditioners
There are two types of air conditioner: window units and central air conditioners. Window units are generally less powerful than central air conditioners, as they are designed to cool one room rather than an entire house. Central air conditioners are more expensive but more efficient, as they can cool several rooms at the same time.
  1. Factors influencing motor power
Motor power depends on a number of factors, including the size of the room to be cooled, room insulation, number and orientation of windows, ceiling height, average outdoor temperature and number of people in the room. The larger the room, the higher the motor power required for effective cooling. Similarly, if the room is poorly insulated or exposed to the sun for a large part of the day, a higher power rating will be required.
  1. Calculating power requirements
To determine the power required by your air conditioner, you can use a simple formula based on the size of the room. Simply multiply the area of the room in square meters by 35 to obtain the wattage required. For example, if your room measures 20 square meters, you’ll need 700 watts (20 x 35). If your room is exposed to the sun for a large part of the day, or is poorly insulated, you can add 10% to this figure to obtain additional power.
  1. Tips for choosing the right wattage
It’s important to choose the right wattage for your air conditioner, as insufficient wattage won’t be effective in cooling your room, while excessive wattage will consume more energy than necessary. Here are a few tips to help you choose the right wattage for your air conditioner:
  • Measure the size of the room to be cooled accurately and use the formula for calculating the power required to obtain an estimate.
  • Take room insulation, sun exposure and ceiling height into account when adjusting your power estimate.
  • If in doubt between two different wattages, choose the more powerful one to ensure that you’ll be able to cool your room efficiently.
  • Also consider the motor’s noise level when choosing an air conditioner, as a more powerful motor can be noisier.

Contact Audette Électrique Inc. for more information.

If you have any questions or requests, Audette Électrique Inc. is at your complete disposal. We sell and repair electric motors in Ottawa, Gatineau and other regions. Call us at 819 777-3325, or fill out our contact form.
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