VIAIR 450P Automatic Function Portable Compressor video review

VIAIR 450P Portable Compressor video review

The 450P Automatic is VIAIR’s first Automatic shutoff function portable compressor and is rated for use with most any size tire. Powered by an easy-to-establish temporary connection to a 12-volt battery power source, this 100% duty cycle unit is capable of pressures up to 150 PSI continuously without the need to be rested. The 450P Automatic comes with a range of accessories stowable in its soft carry case, including a convenient close-ended gas station-style air gun.

If you are looking for one of the portable air compressors available, then take a look at the Viair 450P. Unlike cheap tire inflators out there, the list of features built into the Viair 450P is really impressive. Consumer comments from across the net also indicate a high level of satisfaction with this tool. Let’s check out below the full details of the automatic portable compressor.

The Viair 450P’s most novel feature is the fact that it has a 100% duty cycle. It can be operated continuously without a cool down time for up to 40 minutes depending on your environment. This feature is not common for a portable compressor. The time required to air up large tires will significantly decrease. This 100% duty cycle portable compressore is capable of filling up 37″ x 12.5″ tires from 15 to 30 PSI in less than 5 minutes. It only takes 7 minutes to air up 35″ x 12.5″ tires from 0 to 30 PSI.

The CFM rating is 0.94 at 100 PSI. This unit is designed to deal with low tire pressure not to drive air tools. Powered by a permanent magnetic motor, it offers 150 PSI maximum working pressure. The portable compression system is equipped with a pressure switch to protect the unit from over-pressure. The switch will automatically turn off the motor when the internal pressure reaches 145 psi, the factory set cut-out pressure. When the internal pressure drops below 120 psi, the unit will restart automatically.

The Viair 450P comes with an automatic shutoff function that will come into play when moving from tire to tire. Unlike a typical portable compressor, there is no need to turn it off between tire fills. The compressor shuts off automatically when not actively filling tires. This feature will save you time and effort to get tires inflated quickly. This also enables you to check air pressure easily in the middle of a tire fill.

A number of parts are included with the 12-volt air compressor. There is a gas station-style tire gun with 200 PSI gauge. The pressure gauge on the inflation gun allows you to read pressure on the fly. It will help with managing the air fill. With this feature, no more switching back and forth between a tire chuck and a gauge to monitor tire fill pressure. This also eliminates the need of an additional pressure gauge. You can use this compressor to inflate or deflate tires. There is a valve button on the tire gun kit that enables you to easily reduce tire pressure.

It also includes a 3 pc inflation tips kit, vibration-resistant diamond-plate sand tray and a 25 ft extension hose. The hose will enable you to reach all your vehicle tires without having to reposition the unit. Each end of the coiled hose has a 1/4″ quick connect coupler. A carry bag is also included. The bag has a zippered compartment for the included inflator/deflator hose. Some people wish it came with a hard case. However the carry bag is still a nice extra.

Dual battery clamps are provided to connect the compressor to your car’s battery terminal. With a direct battery connection, you can theoritically utilize all available 12 volt power sources. However, it is recommended to keep your car’s engine running while inflating the tires to avoid draining your battery. The maximum current draw at peak pressure is 23 Amps. There is an inline fuse holder to protect the compressor from amp spikes.

All the reviews of the 450P are positive with 3 and above. However, not everything about the Viair compressor is positive. There are some negative comments that have been leveled at this product.

All in all, based on the reviews it can be said that the Viair 450P is an excellent choice for a portable air compressor. If you are sick of cheap cigarette lighter compressors and are looking for a serious unit for airing up tires or filling inflatable items, this versatile compression system is worth considering.

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