How To Safely Run A Generator In A Garage?

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In a hurry? Here’s the quick answer to your question of how to safely run a generator in a garage, maximize the air ventilation. 

Would you put your family’s safety at risk thinking that your generator running in the garage (or in the rain) will vent all of the hazardous gases outside? I don’t know, but I certainly wouldn’t. 

I don’t know whether you’re aware or not; the gas discharged by the generator is pretty much hazardous that may make you feel as if you can’t breathe anymore. I felt that a lot of times, and believe me, it is much like standing at the edge of a volcano! 

Well! Every problem comes with a solution. And this one also has a lot, but I know most of you can’t find the exact way out of this tricky situation. So, I won’t make any incorrect statements here. It’s a bit tricky and risky, but some specific processes can minimize the risks if followed precisely.

So, keep scrolling down as you will find a lot of stuff related to this point. I am going to share a variety of issues caused by such activities. Also, I’ve shared many solutions that I have gone through myself to aid you a lot in running a generator in a garage. 

All the information you’ll find here is shared as per my own experience, so this is not going to be a typical article. 

Why Should You Not Run A Generator In Your Garage?

Safely Run A Generator In A Garage

Many around me have opted out to run their generators in their garages or anywhere else in their houses. Still, ever since I have done it, I found it an irritating experience for myself until I tried some tips and techniques to overcome these issues. 

Below are some reasons why I think you should refrain from running your generator in the garage:

Prolonged Exposure To Carbon Monoxide

One of the leading hazards of running a generator in an enclosed space is exposure to a colorless, odorless carbon monoxide gas that is a considerable threat, or I should say a poison for your life.

Lack Of Oxygen Can Cause Difficulty To Breath

Due to the enclosed space and lack of ventilation, the carbon monoxide released by the generator stays inside as it found no way to escape. This will eventually minimize the concentration of oxygen in the surrounding, causing difficulty in breathing and inhaling.

Poisonous And Explosive Fumes Can Cause Severe Threats To Life

Another reason you should think about is the exhaustion of some toxic and explosive fumes that are no lesser harmful than carbon monoxide. 

The generators that generally run on gasoline release flammable and combustive gases that are even more hazardous than the silent killer (carbon monoxide).

An Irritating Noise Is Produced That Can Snatch Your Mental Piece

It may sound weird, but noise is also why I prefer not to run generators in the garage as it creates a jerking noise that will create an uncomfortable environment in your house.

An Immense Amount Of Heat Is Produced

As you all know that generators are huge heat-producing devices; such types of pieces of machinery, when kept in an enclosed space, usually result in damaging your generator.

Significant Consequences That You Might Face Due To These Reasons

All the reasons mentioned above are practical issues usually caused by generators when kept in an enclosed space. 

I mean, choosing an enclosed space for your generator will expose you to the following threats:

  • Carbon monoxide is a poisonous substance that can poison human beings without giving a signal. According to modern research, if around 50% of this poison is kept inside by human beings for more than 5 hours, it may kill them undoubtedly.
  • The flammable and toxic smoke may explode in the house. It isn’t any new thing to hear that houses are blown away due to gas exposure. Hence, garages that are inside the house may cause such happenings.
  • The noise-creating machinery can eliminate all the peace from your house and create a jerky environment.

Self-Help: How To Safely Run A Generator In A Garage?

I’m pretty sure no one of you would ever want to take risks regarding your family’s safety and security. 

So, though running a generator in your garage can cause all the previously discussed troubles, I will share some essential solutions with you that will pull out all your worries in seconds, if followed precisely.

Vent The Generator In A Garage

The key to getting rid of all the hazardous releases of the generator is to arrange ventilation for your garage. Or, maximize it if already present. I’d suggest you two ways for doing so:

  • Make sure that your generator’s exhaust is connected to a long flexible exhaust tube. Connect this tube to a well-aired and new area.
  • You can also connect your generator’s exhaust tube to a PVC pipe. It will route all the poisonous fumes and gases to the external atmosphere.
  • Try to maximize the airflow in your garage by opening all the windows and doors. Or you can also use a big exhaust fan to blow all the gas outside the garage.

Get Access To The Carbon Monoxide Detectors

It is another essential thing in my opinion. Try to install a carbon monoxide detector in your garage that will detect the chances of all the possible accidents.

In my house, I have installed 3-4 portable detectors in each area to ensure that everything is on the right path.

These small detectors have loud alarms that snooze whenever a high concentration of CO is found in the air. So, you should essentially go for this one as it is a perfect idea.

Keep The Gasoline Away From The Garage

Gasoline storage can cause numerous bad outcomes. Therefore, always keep the following steps in your mind regarding this:

  • Always store all the gasoline sources away from your garage. Gasoline is highly flammable and explosive if it receives any spark from your generator.
  • Always refuel your generator when it is completely cooled, as it can cause the gasoline to burn if heated up. So, make sure that gasoline isn’t the reason for your garage to explode.
  • Secondly, try to prevent your generator from overloading as it can catch fire and blow your garage up in orbit. Overloading of such types of machinery when kept in closed space is nothing new. So, make sure to fix such issues.

Pay Attention To The Electrical Cables And Connections

It seems that many of you aren’t thinking about this point but trust me, this could be the leading one in all, especially when there are children in your home.

  • Always consult a licensed electrician to build an excellent electrical system for your generator. Incorrect connections can cause power to back feed through the power lines.
  • Also, pay attention to the extension cord. It should be heavy-duty grade, adequately established, and in good condition.
  • Follow the customer guidelines precisely before running the generator in the garage.
  • Last but not least, KEEP YOUR CHILDREN away from the garage, all the electrical connections, and from the gasoline. I have strictly forbidden all the children in my house to stay miles away from it. And trust me, a little caution can save you from huge threats.

In a nutshell, I’d say that try not to run your generator in the garage as it is associated with numerous hazards and threats that can spoil your health as well as your surroundings. 

In addition, the toxic release of it can eliminate the oxygen from the air, leaving you almost breathless.

However, if you have no other options, all the tips I have mentioned will create a clear route for running a generator in the garage. Follow them precisely.


So, before running the generator, makes sure to plan at least two or three things accordingly, as mentioned previously. Make sure to be fully prepared with all the tips and techniques applied carefully.