Viair 400P-RV Automatic Portable Compressor Kit

This Blowhard (as Carmen calls it) is essential equipment. The Viair 400P-RV Automatic Portable Compressor Kit has been onboard since we set out seven years ago. We use it at least once every two weeks and it performs just as well today as the day we bought it.

Whether you are a luxury resort glamper or an off-road boondocker, or both, like us – you must have a way to inflate your tires 24-7. 

During our blowout in the Mojave Desert we learned that not all AAA responders arrive to your aid with a compressor. On the advice of a good friend we had the Viair on board from Day One, and in the second month of our journey, it may have saved us from needing a tow or having to stay overnight on the highway until someone with a compressor comes along. Over the years, this portable compressor has kept us self-reliant and on track.

The Viair 40047 400P-RV Automatic Portable Compressor Kit connects directly to our truck battery instead of the cigarette lighter. Direct truck battery power provides plenty of charge to inflate our tires within seconds rather than minutes. With eight tires, we don’t have time to futz around with an inferior inflation device, we need The Blowhard.

The Viair comes with 60 feet of hose – that’s enough to reach around our 50′ rig. Easy to unpack, use and store, the Viair encourages our habit of taking 5-10 minutes, before pulling out, to check pressure – every single time.

To be equipped is to be confident and prepared for any and all roadside emergencies.

Thanks to the Viair, we’ve been able to help fellow travelers in distress. It feels good for us, a coupla old blowhards, to be actual heroes.

Oh, and the handy carry case is included and it still looks good after all these years.

We couldn’t be happier with this compressor. Sure, there’s the competition out there. Check it out if you must, but we will always Go with the Viair.


  • 12 VOLT – 150PSI Max Working Pressure, engine must be running during use.
  • 2.3CFM Free Flow @ 0 PSI, Power Cord: 8′ Air Hose: 60′ 12-Volt
  • Powered direct to the car battery with alligator clamps, Duty Cycle: 33 percent @ 100 PSI Max. Working Pressure: 150 PSI Max. Amp Draw: 30 Amps Tire Inflation Gun with 130 PSI Inline Gauge
  • Comes with a tire inflation gun and gauge, build in pressure switch, air hose, RV accessories and a carrying case.
  • Great for adjusting tire pressure on RVs and trailers.