The Best Portable Tire Inflators and Air Compressors of 2021

Why did our best performer (by far) miss first place? Because it requires users to go further than other inflators to get that edge. Slime plays up the benefits of the twin cylinders this model uses, and that turns out to be true. If you need a lot of compressed air in a hurry, this is the one to get: It took less than a minute per tire to add 10 PSI.

To get that kind of speed, you’ve got to commit to popping the hood and attaching electrical clamps to the battery. Not all motorists are knowledgeable enough to mess around under there, and it’s certainly less convenient for everyone when compared to the ease of plugging into a 12-volt outlet. Having a direct connection to such a deep well of volts and amps does pay dividends, though. Just look at the numbers the Slime inflator posts if you need convincing.

There are a long coiled hose and a big, easy-to-read pressure gauge, so you can easily get to multiple tires without having to drag the unit around with you. The pressure gauge isn’t backlit, but there are bright LED lights on the compressor itself. The gauge reading also settles back after the compressor stops, but it seems accurate overall.

Good materials and solid construction underscore the impression that this is an inflator that will provide many years of reliable use. There’s a hard-shell case for protection, but that may also make it harder to store versus one of the smaller soft storage bags included with other units. The power cord is a fine length, especially considering the extra-long coiled hose, but the battery clamps are smaller than those you’d find on jumper cables, so you may have trouble fitting them on some battery posts. The price for all this power is also higher than other inflators.

Easy to use and compact, the EP Auto inflator stands out among several similar models in our testing, largely for its beefy direct-drive motor. Its long cord is made of thick wire, and there’s a good weight to the unit overall. It sits on insulating rubber cushion feet and stays put while running. The cord, electrical plug, and hose all store in a thoughtful way, plus there’s a convenient case. Most thoughtfully, there’s an easy-to-read backlit digital display. We like that users can preset the desired inflation pressure and the inflator will stop automatically, thanks to the EP's auto shut functionality.

Other units are faster, but the EP Auto inflator posted consistent times of about two and a half minutes to raise the pressure in our tires by 10PSI. It’s on the quiet side, too, and a built-in LED array provides a good level of illumination. The hose and its screw-on connection aren’t as high-quality or as easy to thread onto the tire valve as some other units. On the other hand, the pressure readout is highly visible in all conditions and very accurate.

A multitasker, the Campbell Hausfield has a strong internal battery to power it without so much fumbling with cords. It also includes a 12-volt power outlet so it can juice up other devices.

It’s slower than the direct-drive inflators, and there’s less muscle on board due to the use of a geared motor drive system. That said, the Campbell Hausfield easily coped with bringing all 4 tires up by 10 psi without any degradation in performance. That means there’s battery capacity in reserve. Indeed, the manual says this unit will pump eight car tires up to 30 PSI, run an 8-watt television for 14 hours, or a 55-watt lamp for 2 hours.

The build quality is good, though the covers for the internal cord and air hose storage compartments are likely to be the first things you’ll lose. Their fit is loose and fiddly. The integral air pressure gauge has good, large markings that are easy to read, but the gauge was about 5 psi above our reference. The air hose is an acceptable length, and it uses a quick-connect fitting at the end which makes it easy to attach and remove from the tire valve.

There’s no built-in light, and this isn’t the most compact inflator we tried. There’s also no carry case, but since everything stores within the unit, it doesn’t really need one. If you can remember to keep it charged, it can be really handy to have in your vehicle. It includes a 120-volt adapter for home charging and a 12-volt cord as well so it can be charged from your vehicle’s electrical system, too. One downside to the large battery capacity is that it takes a few hours to fully top-off, and it can’t be run from its 120-volt adapter. If you’re committed to keeping it charged, this could be a good, convenient choice.

Though it’s small, this Pittsburgh inflator packs big features. Its direct-driven piston and strong electric motor deliver predictable performance. Most surprising were the quiet operation and real-deal air hose fittings; just like you’ll find on the big shop compressor. It won’t run serious air tools, but you could at least pair it with a small air tank. The gauge does read high versus our control Craftsman unit.

The Pittsburgh sits on insulating rubber feet, as do all the direct-drive units in this test. Its lighter weight makes it prone to being pulled over by its rigid coiled air hose, which is more difficult to work with than it should be. Because the hose is stiff, it’s less convenient to work with.

For tires found on cars, crossovers, and most common SUVs, the Pittsburgh inflator can easily cope. It’s not the fastest, but it still got the job done for us in under two minutes per tire. The limits of the motor and airflow capacity will show themselves when attempting to use this inflator for high-volume off-road tires, but it’s likely to fit the needs most people. There’s also no lighting of any sort on this inflator.

The Home Depot exclusive Husky has a decent build quality and thoughtful design. It doesn’t wobble while running, and it has a quick-connect fitting for easy tire connection. Like the Pittsburgh, there’s no lighting on this unit, either. The large pressure gauge is clearly marked and easy to read, and it’s face glows in the dark—which is useless if it’s been stored in a dark place. The gauge readings were actually low compared to what we measured with our own tire gauge. Unlike most other inflators, with gauges that read slightly high, you may wind up putting a few PSI more than you bargained for into your tires with the Husky.

The Husky turned in slower inflation times than the smaller Pittsburgh, and neither inflator have the automatic shut-off feature of the EP Auto. Its 13-foot power cord is a good length, as is the 28” hose. It’s hard to argue with the easy retail availability (and return/customer service) and 2-year warranty.

The popular, as-seen-on-TV Air Hawk inflator isn’t part of a versatile tool ecosystem offered by brands such as Ryobi, Dewalt, and even Craftsman. Instead of using a common battery for a range of tools, the Air Hawk is an island unto itself, so you’ve got yet another set of batteries to keep charged and find storage for. It does have handy portability going for it, with a compact size and on-board power. When the batteries run down, you can power the Air Hawk with an adapter cable plugged into the car’s 12-volt outlet, as well. The tire inflator hose clips to the top and additional tools such as a needle for sports balls and additional nozzles, as well.

The Air Hawk is easy to use thanks to its pistol-grip design. It has a clear, backlit pressure display that can be pre-set to your desired inflation level. The inflator will automatically stop once it reaches your desired inflation, and you can lock the trigger for hands-free operation. The Airhawk is lightweight and very portable, but it also feels cheaply made. The noise level is about what you can expect from a geared-drive inflator. The tire hose is short for automotive use, and the unit hangs awkwardly depending on how far from the ground the fill valve is. A quick-release connector would be faster, but the hose is easy to screw onto the tire valve.

通货膨胀时间长;每胎3.5 4分钟,and a single battery only had enough capacity for three tires before switching to a second charged battery. The Air Hawk does ship with two batteries, but it’s clearly not intended for heavy-duty automotive use. It’s okay for topping up and great for bikes and balls, but for any items that require a significant volume of air, it’s overmatched. The Air Hawk became noticeably warm during use, and while its digital readout is very accurate, we had to set the desired PSI higher than our 35PSI target to reliably meet that pressure when checked with our Craftsman gauge.