How Long Should An Air Conditioner Run (And Why)?

How Long Should An Air Conditioner Run (And Why)?

Exact Answer: 15 minutes

In summers, an air conditioner is a must. But are you aware of the fact that you need to switch on and put off the air conditioner after some time? Many people don’t turn off the air conditioner no matter what. If you want the answer to how long your air conditioner should be on in a cycle then you’ve ended up at the right place.

Users need to know that the running cycle of your air conditioner is dependent on the following four factors. First, the efficiency of your house insulation to support the air conditioner. Next, is the weather. On a hot summer day, there is more usage of an air conditioner in comparison to winter or rainy season. Then, it depends on the size or capacity of your air conditioner. Also, you need to keep an eye that your air conditioner is working properly.

How Long Should An Air Conditioner Run

How Long Should An Air Conditioner Run?

DaysAir Conditioner Cycle
Hot Days15 mins
Mild Days10 mins

The hotter the day, the more necessity you have for an air conditioner. For those who’re in Africa or England during summers where the temperature keeps on rising then an air conditioner is constantly required. It aims at cooling your home and makes your summers easier. During the daytime, bearing the heat isn’t an easy job for that you need an air conditioner. Sometimes, it isn’t that hot so you can use your air conditioner a little less.

Be it a hot or a moderate day, you should run your air conditioner for not more than 15 minutes continuously. If there is leakage, airflow, or your air conditioner is small in comparison to the room then it won’t work efficiently. When it’s not too hot outside or it is a mild day then a minute’s run of an air conditioner is enough.

In case if you switch on and off your air conditioner frequently every now and then, it would tear the internal parts of your air conditioner. With repeated repairs and wear and tear of the air conditioner, your air conditioner would have a shorter lifespan. It isn’t good for the proper functioning of your air conditioner.

Why Does It Take This Long For An Air Conditioner To Run?

Wish to know the factors on which the normal functioning of an air conditioner depends? Then, you’re at the right place. On a mild day, you need to run your air conditioner for about 15 to 20 minutes. But that solely depends on the outside temperature. The hotter or the humid temperature would increase the craving to switch on the air conditioner. All you need to do is stay comfortable and cool on hot sunny days. Make sure you set the thermostat at a lower temperature. It will cool the room faster and you can save electricity and time.

Also, you need to consider the size and efficiency of your air conditioner. The bigger the air conditioner, the shorter the run time. And the less time required to cool your room. But if it’s too small then it might need 20 minutes without any change in temperature to cool the room.

The condition or state of your air conditioner also decides the lifespan. Next, we need to check the size of our room. The bigger the room the more time it will need to get cooler. But it decreases the run time. Check for any leakage or dampers in your room. Lastly, you need to check the quality of insulation provided to your air conditioner. Insulation is a must in summers and winters. Lack of proper insulation would lead to the longest-running of air conditioners.


Now, you don’t need to worry about the runtime of your air conditioner. Air conditioners do fluctuate but we need to inspect if it’s causing trouble. Everyone wishes to have a perfect air conditioner. So, all you need to do is upgrade it with time. Don’t invest your hard-earned money in a small-sized air conditioner. Else it would need more repairs and electricity.

For an ideal condition, an air conditioner should run for about 15 minutes in a run. If the temperature rises and keeps on rising, then in such cases you can increase the run time. But try not to exceed more than 20 minutes.


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Hi! I'm Nidhi.

Here at the EHL, it's all about delicious, easy recipes for casual entertaining. So come and join me at the beach, relax and enjoy the food.


  1. The article presents a well-rounded understanding of the optimal runtime of an air conditioner and the implications of various conditions. Really valuable information.

  2. The factors affecting the runtime of the air conditioner are well-explained. It’s a valuable piece of knowledge.

  3. The article offers important insights into the runtime of air conditioners, considering factors such as insulation, room size, and conditions. Well done!

  4. The article effectively addresses the factors contributing to the optimal air conditioner runtime. Well worth reading!

  5. The need to avoid frequent turning on and off of the air conditioner to prevent internal damage is an important takeaway from this informative post.

  6. The importance of proper insulation and the impact of different room sizes on the runtime of the air conditioner are significant aspects to consider.

  7. The detailed explanation of the factors affecting the runtime of the air conditioner is interesting and helpful.

  8. Great insights into the runtime of air conditioners based on different factors. Thank you for sharing!

  9. This article provides a clear understanding of the optimal runtime of an air conditioner based on the factors such as insulation, weather, capacity, and condition. Great job!

  10. The article emphasizes the significance of the efficiency and size of the air conditioner along with proper insulation. Thought-provoking!

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