Updated at: 18-03-2022 - By: micdot

This article contains affiliate links. Using any of the links on this page will allow me to earn a small commission at no additional cost to you. Is it possible to sleep in my car when the AC is on? YES, you can sleep in your car with the AC on, but it’s not recommended. We’ll go into why in a little. For many people, a car is more than simply a mode of transportation; it’s a way of life. An interstate rest stop is a convenient spot to stop and cool down during long highway travels or for a brief afternoon snooze in the hot summer sun.

According to a recent study, “truck drivers can sleep up to 8 hours daily inside their cars.” As a result, knowing how long we can sleep or whether we should sleep in our cars is critical, especially while the AC is on.

Can I Sleep In My Car With The AC Running?

Yes, it is the answer. You can take a little snooze in your car, but there are a few things to keep in mind. Check to see if you have enough gas or electricity to keep the vehicle running for as long as you need. You should also consider the safety of sleeping in your car while the air conditioner is on. Sleeping in your car while the A/C is on can be deadly, according to recent scientific studies.

Guys, don’t freak out. Only if there is a problem with the air conditioning in your automobile will it try to kill you. Let’s take a closer look at why it’s not a good idea to sleep in your car when the A/C is on.

Why You Shouldn’t Sleep in Your Car with the A.C Running

In addition to the discomfort of sleeping in a car, you incur the risk of overheating. Damage to a vehicle’s engine can occur because many car radiators function as backups to the vehicle’s expected motion. It’s also possible to die from a small exhaust leak. For electric cars, the issue of exhaust fumes suffocating you can be ignored, however the case of your automobile overheating must be taken into consideration.

Can Your Car A.C Kill You?

Carbon monoxide poisoning can be lethal if you sleep in your automobile while the AC is on. There is no odor to carbon monoxide, which is a very dangerous gas. Your car’s fuel produces this byproduct. A problem with your car’s exhaust, for example, may allow this gas to re-enter the vehicle as you sleep and smother your body. As well as a possible lack of carbon monoxide removal from your vehicle, your AC system may have flaws or leaks you are unaware of or be too weak to completely replenish the air in your vehicle. Carbon monoxide levels are expected to rise as a result. As a result of carbon monoxide impairing the blood’s ability to transport oxygen to your cells, brain damage and eventual death might result from a lack of oxygen.

The fact that this gas has no smell and puts you to sleep makes it much more deadly. The kind of sleep you’re looking for is out of my reach, but I understand that.

Can Leaving Your AC Running Damage Your Car Battery and Engine?

When you have the AC on at night and go to sleep, you don’t think about the engine’s condition. Depending on how long the A.C is permitted to run while you sleep, it may drain the battery of your car. It is easier to appreciate the impact of a car’s battery if you have read our article on how long a car may go without starting. Please click here if you haven’t already.

Because of this, if you leave your car’s AC on for long periods of time without moving the vehicle, you risk harming the battery. If the engine is left running for a lengthy amount of time without movement, it can potentially overheat and harm the radiator. When the car is moving, its fans act as coolants. When the car is moving, the outside air cools the engine. An confined area, such as a garage, increases the likelihood of an overheating vehicle. The answer to the question of whether or not you can sleep in your car while the AC is running is overwhelmingly yes. If you have a leaky exhaust system, check to see if the tailpipes are blowing exhaust properly. Even with the doors open, never use the air conditioner in a garage or porch that is completely enclosed. It bears repeating: exposure to exhaust fumes can be lethal.

To avoid carbon monoxide poisoning and further damage to your vehicle, never sleep in your car with the air conditioning on. To avoid harming your car’s engine or batteries, consider investing in an electric fan that will allow you to leave your windows open and let in fresh air throughout the night. Before you decide to sleep in the car, be sure you’ve tried all other possibilities, such as booking a hotel room. Carbon monoxide poisoning is far less of a threat if you sleep in a sealed room, in addition to improving the quality of your sleep. Aside from that, you’ll have to pay to fix a car if your AC malfunctions while you’re asleep. With all of the drawbacks and health dangers it can pose, it’s not worth it.


In my opinion, it is more cost-effective to stay in a cheap motel rather than sleep in your car with the AC on and risk damaging your vehicle. You’ll also be able to obtain a better night’s sleep as a result. Even if it’s an electric automobile, you can still drive it if it’s connected to a power source. As a last resort, if you must sleep in your car, make sure to turn off the engine and provide some space for ventilation.