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AC Blast Myth vs Reality: Can running the air conditioner overnight cause the compressor to explode? Know the right way to stay safe
Samira Vishwas | June 10, 2026 4:24 PM CST

In this season of scorching and record-breaking heat, air conditioner (AC) is no longer a luxury but has become the biggest necessity to sleep peacefully. People pass the day in any way they can, but to get a peaceful sleep at night, they turn on the AC indiscriminately and go to sleep. However, recently a painful news from Vivek Vihar area of ​​Delhi has shocked everyone. Nine people died untimely in a massive fire that broke out in a building in the early hours of Sunday. In the initial investigation, the main reason for this horrific accident is being said to be ‘AC blast’.

After this incident, every common man has a fear in his mind that is it safe to run AC all night? Does running the AC for several hours continuously increase the risk of it bursting? Let us understand this topic in very easy and practical language.

Is it really dangerous to run AC overnight? (The Reality Check)

The simple and clear answer is- No, provided your AC is in good condition.

Machine manufacturing companies also know very well that in summers AC will be used continuously for many hours. That’s why every modern AC has a Thermostat It is applied. Its function is that as soon as the room temperature reaches your set number, it cuts off the compressor. This means that your AC does not run continuously at full power, but keeps taking automatic rest in between.

The problem isn’t with running all night; The real danger arises when the AC is old, has not been serviced for years or has a serious fault in its electrical fittings. In such a situation, it can cause a major accident even in just two hours.

After all, why does AC explode like a bomb? (The Main Reasons)

Accidents never happen without warning. There are some very common but ignored reasons behind AC blast:

  • Skimp on servicing: After winter, when we switch on the AC directly, a thick layer of dust accumulates on its filter and compressor. This causes the compressor to work twice as hard to blow air, causing it to become extremely hot (overheating) and explodes.

  • Poor wiring and short circuit: AC draws a lot of power (heavy load). If the wires in your house are weak or the quality of the plug is poor, then due to continuous load the wires melt and short circuit directly leads to fire.

  • Suffocation of outdoor unit: Often people keep the outdoor unit of the AC in a closed balcony or in such a tight place where there is no ventilation. When the hot air from the compressor cannot escape, the pressure inside increases to dangerous levels.

  • Leakage of flammable gas: Today’s ACs use gases like R32 or R290, which are highly flammable. If there is a minor leakage anywhere in the pipe and even a small spark of short circuit reaches there, then a big explosion occurs in the blink of an eye.

The safest and right way to run AC at night

If you want not to feel hot and your family also remains completely safe, then definitely include these small habits in your daily routine:

Golden rule of 24°C to 26°C

Many people have a habit of setting the AC directly to 16 or 18 degrees in order to cool the room quickly. According to the rules of science, this does not cool the room quickly, rather it puts non-stop load on the compressor. Always keep the temperature at night 24°C to 26°C Keep between. This is most comfortable for the human body and does not put pressure on the machine.

The magic of sleep mode

There is a ‘Sleep Mode’ button in your AC remote, which most people do not use. It makes the most sense to turn it on before sleeping at night. This mode gradually increases the room temperature by 1 to 2 degrees every one or two hours after you sleep. Due to this, the compressor does not have to go to the trouble of switching on and off again and again, the risk of accident is greatly reduced and your electricity bill also gets saved a lot.

Pay attention to timer and insulation

If you don’t feel the need to turn on the AC all night, set a timer of 2 or 3 hours on the remote. After the room cools down, the AC will automatically switch off and the rest of the night will be spent easily with the fan’s breeze. Also, keep the doors and windows of the room well insulated so that cold air does not escape outside and the AC has to work less hard.

Safety guide: never forget these 4 things

Incorporate this short checklist into your lifestyle to avoid any potential AC dangers:


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