VIAIR 450P-RV Portable Automatic Air Compressor Review

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Keeping your tires properly inflated is key to safety on the road. This is especially true for bigger vehicles such as RVs and motorhomes. So when VIAIR invited us to review their 450P-RV portable, automatic air compressor we jumped right on it.

Over the years, we have heard many of our trusted, experienced RVing friends rave about how much they loved their VIAIR. I had been using a cheaper quality brand for a couple of years and was anxious to see how it compared to the VIAIR. This unit had been on my wish list for quite a while. So I was excited to try it out and see the difference for myself.

Disclaimer: VIAIR sent us this air compressor at no charge for us to test and share our honest review. As always, our opinion is our own.

VIAIR makes a wide range of higher end quality air compressors. This 450P-RV model was specifically designed with RV needs in mind. The VIAIR air compressor is MUCH higher quality than other compressors I have used. What makes it better than others is the higher quality components, better air flow, enhanced features, greater flexibility, increased ease of use and lower noise. I am very impressed with the quality of the VIAIR air compressor so I am very happy to be able to share this review with you guys.

If you’re an avid RVer like we are, you would likely find that either the 450P or the 450 model would suit well for your needs. Both of these are quality products that do the job VERY well. The main difference is the volume of air flow and running time. The 400 provides a higher rate of air flow but the 450P-RV can run for longer, up to 40 minutes of continuous use.


  • 150psi max pressure
  • Pumps 1.8 cubic feet per minute at low pressure
  • Pumps 0.8 cubic feet per minute at 130psi
  • Can run continuously for up to 40 minutes
  • Auto-shut off when at pressure
  • Alligator clips to connect to battery of vehicle for 12 volt power (pulls up to 23 amps)
  • Kit comes with two 30 feet long braided air lines
  • Replacement air filters
  • Comes with air gun with built in gauge and inflation trigger
  • Kit includes multiple attachments to adapt to all your inflation needs
  • Canvas bag with multiple compartments to keep organized and easily carry
  • Dimensions: 11″ x 6″ x 7.5″ (L x W x H)
  • Weight: 18 pounds for full kit (13 pounds for compressor alone)

What I like about it

VIAIR makes some of the best quality portable, automatic air compressors on the market. I love how quick and easy it is to inflate my tires. The attachments makes it easier to reach my valves. They can move forward and backward so easy access. This saves me so much valuable time. I also love that it’s quiet and I don’t disturb our campground neighbors in the morning when I air up my RV tires before hitting the road.

You can also use the VIAIR for inflating kayaks, Standup Paddle Boards (SUPs) and other inflatable toys and devices.

How does it compare to our old unit?

The VIAIR is a noticeably higher quality unit than the cheap one I picked up from Harbor Freight a few years ago. I put both units to the test alongside each other, and found the VIAIR to inflates tires a lot faster, had much more power, and was quieter. Other lower quality units can’t meet the PSI that the VIAIR does and it is awesome for these larger motorhomes because many of them need 100 PSI or higher pressures for their tires.

My Thoughts?

This is a powerful, high quality air compressor that does the job VERY well. Now I totally “get” why the Viair is such a popular item among experienced RVers. Once you use it, it’s also easy to see why the VIAIR is well worth the higher price. Especially if you are doing extended travel and checking a lot of tires like on the RV, like us. Compared to our old system, I love this VIAIR so much more.

What Does it Cost?

This VIAIR 450P-RV is available on amazon. Keep an eye out for sale prices. But even at full price, this is a valuable tool to have onboard your RV.

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7 thoughts on “VIAIR 450P-RV Portable Automatic Air Compressor Review”

  1. This product has the incredible amount of features. In addition, it is light and ready to go at a moment’s notice with it only being 18 pounds. I can easily find a place for this relatively small and lightweight compressor.

  2. Love the the review. I have a big rig, where I need to get 100lbs in the 11R22.5 rear tyres and 120lbs into the front 11R22.5 wheels. Do you believe this unit will do the job, or am I wasting my money?

    • This Viair will do it – that’s why we had to upgrade from our cheapie from Harbor freight. We used this for our big diesel pusher motorhome tires and have pumped up to 120lb no problems. You will be happy with the Viair… it’s much quieter and faster too.

  3. I enjoy your reviews. I need a compressor but I’m not sure about hooking directly to the battery. I don’t have a bank of batteries like yours. What do I need in order to run this Viair compressor?


    • Thank you for the positive feedback. Glad you enjoy our reviews. It is totally fine to use the VIAIR without having huge battery bank like ours. I use our VIAIR being powered by the battery in our Jeep. the difference is… I always start the Jeep and have the engine running before turning on the VIAIR when powered by the Jeep, or any other car.


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