VIAIR 45043 Automatic Function Portable Compressor Review 2019

VIAIR 45043 Automatic Function Portable Compressor Review 2019

Are you searching for the best car air compressor in the market which is able to give better performance, made of durable steel and still its weight is low? Let me introduce with the VIAIR 45043 Automatic Function Portable Compressor.

As VIAIR is a popular brand, they always try to keep the best quality. Here we are gonna review of the product in details.


VIAIR 45043 Automatic Function Portable Compressor.

Key Features of VIAIR Portable Tire Inflator Compressor:

Portable & Compact:

The best part customers love about the product is the portability. The VIAIR Portable Compressor weighs only 12.73 pounds.

Because of the lightweight, it is easy to carry to different job sites with one hand. Even a teenager can carry the compressor from one place to another.

Its dimensions are 10.9 by 5.8 by 7.5 inches. That is why it easily accommodate in a car trunk or in a small space.

Wanna carry this Viair compressor with less effort? There is a bag included with this car air compressor to carry it safely with more comfort.


The prime indicator that determines the potentiality and value of a compressor is the maximum level of pressure it can deliver. The maximum pressure of this VIAIR 45043 is 150 PSI. The CFM rating of the compressor is 0.94 at 100 PSI.

This VIAIR tire inflator is able to air up 37″ x 12.5″ tires from 15 to 30 PSI within five minutes. If you want to air up a 35″ x 12.5″ tire, it takes seven minutes from 0-30 PSI. 

Tire Fill Rates:

 Level of Pressure
Tire Size:
31 x 10.5 inch
Tire Size:
33 x 12.5 inch
Tire Size:
35 x 12.5 inch
Tire Size:
37 x 12.5 inch
0 to 30 PSI
Time: 4 min. 05 sec.
Time: 5 min. 30 sec
Time: 6 min. 55 sec.
Time: 7 min. 56 sec.
15 to 30 PSI
Time: 2 min. 10 sec.
Time: 2 min. 50 sec.
Time: 3 min. 30 sec.
Time: 4 min. 09 sec.

Versatile Applications:

Viair car air compressor can do a lot more things then inflating car-tires. This compressor features a gas station styled air gun. It is quite effective for a variety of airing tasks, as for example filling up tires, giddy pools, rugby balls, etc.

Power Souce:

Viair compressor’s main power source is a 12-VOLT motor. There are dual battery clamps with the 40-amp inline fuse for perfect power. The motor of the compressor makes less noise which gives the user a calm and quiet environment.

Exclusive Duty Circle:

What on earth can work without rest? Believe it or not, Viair can! This VIAIR Portable Compressor comes with an unbelievable 100% duty cycle.

With this amazing stamina, it can operate as high as 150 PSI without taking a single minute for rest. You call it a super innovation in the world of car air compressors.

What is a duty cycle?

The term Compressor duty cycle indicates to the definite time-duration that a compressor is able to operate within a given amount of time period when the pressure level is 100 PSI and the ambient temperature level is about 72°F (standard).

Usually, the Compressor Duty Cycle indicators are expressed through percentiles. It is calculated through the following formula: the “compressor on time” / (the compressor on time + off time) = Duty Cycle %.

For example, if the compressor is rated with 20% duty cycle at 100 PSI @ 72°F, then it means that the compressor is able to operate for continuous 12-minute then it takes a 48-minute break.

Now the counting stands as follows: 12 min. on / (12 min. on + 48 Min. off) = 12 min. / 60 Min = 20% compressor duty cycle.

Ease of Use:

Are you the person who don’t love tools which are complicated to use? Then the VIAIR air compressor is highly recommended for you. This is one of the models which is easy to use.

Viair is blessed with a powerful inflation gun featuring gas station style performance. In addition to this, the provided accessories would you to complete the inflation process within a short time.

Safety Issue:

This Viair high-end car air compressor is equipped with an Automatic Reset Thermal Protective System. Furthermore, it has an auto-shut-off function on the air compressor. All of these features aim to prevent the risk of occurring any power damages.

The carry bag allows the user to carry it without any hassle and the anti-vibration tray helps the user to do the job with perfection.

Necessary Accessories:

When you are buying an air compressor, you also need a lot of small kits for operating the compressor for the maximum output. Most of the air compressors don’t come with those kits. The user has to buy separately those toolkits.

But thanks to the manufacturer for providing a bunch of accessories with this VIAIR Automatic Function Portable Compressor. Check out the following list to have a better idea.

What Comes inside the Box:

  • VIAIR 45043 model portable air compressor: 1 set
  • Deluxe zippered carrying bag with multi storage compartment: 1 set
  • Gas station style inflation gun with 200 PSI air pressure gauge: 1 set
  • 25 feet extension air hose with quick connector coupler & lever chuck: 1 set
  • Heavy duty sand tray with vibration isolators: 1 set
  • Dual heavy-duty direct battery clamps: 1 set
  • 8 feet power cable: 1 pc
  • 3-pc inflation tips kit: 1 set
  • Inline fuse holder: 1 pc
  • User manual


Who wanna invest for the same product again and again? This VIAIR Compressor comes with a sturdy body featuring heavy-duty construction. It’s gas station styled inflation air gun can offer the best performance for years after years. This portable compressor would last long if cared properly. 

Brand Reputation:

VIAIR Corporation is one of the pioneer manufacturing companies who produce a complete series of air compressors as well as air accessories. Their high-end air compressors can be used to operate a range of air pneumatic tasks.

The VIAIR tools are applied in diverse sectors, such as OEM segment, Sport Air Suspension, etc. Furthermore, VIAIR products have acquired industry level standard for both of the 12 V and 24 V automotive applications.

What is more? The VIAIR compressors can be operated even in the adverse climates which brought the brand a huge reputation worldwide.

Technical Specifications:

  • Power Need: 12-Volt
  • Motor Type: Permanent Magnetic Motor
  • Product Duty Cycle: 100% @ 100 PSI
  • Maximum Working Pressure Level: 150 PSI
  • Maximum Amp Draw Level: 20 Amps
  • Maximum Ambient Temperature Level: 158°F
  • Minimum Ambient Temperature: -40°F
  • CFM at 0 PSI: 1.66
  • CFM at 100 PSI: 0.94
  • Built-in Pressure Switch Level: ON at 120 PSI on; OFF at 145 PSI
  • Fuse: 30 Amps
  • Automatic Reset Thermal Protective System: Yes
  • Ingress Protection Ratings: IP54
  • Product Dimensions: 10.9 x 5.8 x 7.5 (inches)
  • Product Net Weight: 12.73 pounds
  • Power Cord Length: 8 feet
  • Air Hose Length: 25 feet.


  • Most durable air compressor in the category of the portable air compressor.
  • 1.80 CFM Free Flow @ 0 PSI.
  • Maximum pressure of the compressor is 150 PSI.
  • Easy to read the pressure in the included meter in the hose.
  • Quick connect to inflation gun for quickest airing up.
  • Included a carry bag.
  • Oil-less Design so needs low maintenance of the compressor.
  • Convenient automatic time and power-saving feature for the best output.
  • Automatic shutoff functions for the long life of the compressor.
  • The 1-year limited warranty is available on the product.


  • Though the air compressor has come with a lot of unique features and able to give better performance, the price is not affordable for general people.
  • If you compare with some other high-priced products, the noise level of the compressor is a little bit high.


If you are a heavy-duty car air compressor that can inflate any kind of vehicle-tire within a few minutes with a great efficiency, you can go for VIAIR Portable Compressor without any doubt. This portable compressor is portable and easy to use. It can finish the task without taking any break. This compressor might be a little pricier, but it can offer you a great value in the long run.