Things to Consider When Choosing the Ideal 12V Air Compressor

Portable air compressors are a great option for people who work in remote places without electricity, as well as average Joes who want to make sure they have a solution in the event of a flat tyre. 12V air compressors are lightweight and compact, yet powerful enough to handle most everyday tasks. There are also models suitable for industrial use, but those come at a higher price point, and can be bulkier in size. If you’re looking for the ideal air compressor, there are quite a few things you need to take into consideration, in order to make the right purchase. So, how to choose the best 12V air compressor?

Consider the Max Air Pressure

The maximum air pressure of the compressor is the most important feature, as it’s a tell-sign of what you can and cannot use the compressor for. Air pressure is measured in PSI, and if the number is lacking, the compressor won’t work properly. That being said, a higher number of PSI is almost always better. For 12V air compressors, expect to see PSI ratings of anywhere from 25 to 150. If you intend on using the air compressor to inflate flat tyres, a unit with 50 PSI will suffice. Most car tyres range from 30 to 40 PSI, but some SUVs and RVs can require as many as 90 PSI. That being said, pay attention to the PSI requirements of your tyres or the tools you intend to power with the compressor before making a final choice.

Consider the Air Flow

The air flow of the compressor represents the air volume output it’s capable of. Simply put, it represents the speed at which the air flow is delivered by the unit. The measurement of air flow is expressed in cubic feet per minute. Basically, the higher the CFM rating of the compressor, the better it will perform. As a general rule of thumb, you’ll want a compressor with at least 1.5 times the CFM you think you need. This is in order to prevent overloading the unit.

Consider the Power Capacity

The power capacity of the compressor determines its efficiency. If you don’t get one with sufficient capacity, it will be rendered useless. The capacity of air compressors is expressed in horsepower, and most models have a HP rating anywhere between 2 to 10HP. There are models with a higher number, but those generally come at a higher price.

Consider the Duty Cycle

The duty cycle of air compressors expresses the time the unit can operate continuously at 100PSI at a temperature of 22°C. The duty cycle is represented in percentiles, and it’s a sum of its on time plus off time. For instance, if the duty cycle is 50%, it means the compressor can be used for 15 minutes before needing a 15-minute break. That being said, figure out for how long you’ll need to use the compressor at a time in order to get the right model. While you can run air compressors more than their duty cycle, they’ll become less efficient, and in time, their lifespan will decrease.

Consider the Power Source and Draw

Air compressors can be powered using multiple power sources. For instance, a 12V air compressor can use a cigarette lighter socket, making it great for inflating tyres. Another popular option is rechargeable batteries. These are ideal for travellers who don’t want to or can’t plug the compressor into an electrical outlet. In terms of power draw, powerful air compressors obviously draw more power, so if you’re plugging your compressor into the cigarette lighter socket, make sure you don’t drain your vehicle’s battery. So, it’s recommended you get a unit with a 120W or lower power draw.

Consider the Weight and Portability

12V air compressors are meant for light-duty applications. So, it’s recommended you get a unit that’s light, portable and compact. Not only will such a compressor be easier to store in your trunk, but will also make it more portable. It goes without saying that you should consider the dimensions. However, keep in mind that a smaller compressor will generally provide less CFM and PSI. Most 12V compressors weigh around 2-25kg.

Consider the Warranty and Available Accessories

Just like any other investment, you want the compressor to be covered by a lengthy warranty. This not only ensures you’re covered in case something goes wrong, but it also is a testament to the manufacturer staying firmly behind the quality of their product. During the warranty period, you can take your compressor to repairs. Warranty is especially important if you’re buying the compressor online. Typically, 12V compressors come with a 1-3 year warranty.

Some compressors are available with extra accessories that make using the unit more convenient and comfortable. These accessories can include nozzle attachments that let you use the compressors on bicycle tyres or footballs, for example. A carrying bag can be another valuable accessory that lets you transport the compressor comfortably. Other accessories include extra fuses, hose extensions, alligator clips, etc.