VIAIR 450P-RV Automatic Portable Compressor (45053) Review
A 150 PSI clamp-on compressor with a 100% duty cycle at 100 PSI, automatic shut-off and 60 ft of hose for RV and dual rear wheels.
By Watt Versus Editorial· Updated
This page was drafted with AI assistance from manufacturers' specs and manuals, and is checked by our editor.
Our verdict
The VIAIR to buy for motorhomes, travel trailers and dual-rear-wheel trucks: it can run continuously and stops itself at your pressure. For airing up 35-inch off-road tires fast, the 400P moves more air.
Pros and cons
Pros
- 100% duty cycle at 100 PSI: VIAIR says it can run for up to an hour
- Automatic shut-off, which the 300P and 400P lack
- 60 ft of hose and a 45-degree chuck reach every tire on a motorhome or dually
- Gas-station-style gun with a 160 PSI gauge
Cons
- 1.80 CFM, below the 2.30 CFM of the 400P, so it is not the fastest for big off-road tires
- 13.05 lb, heavier than VIAIR's 300P (8.7 lb) and 400P (10.4 lb)
- Clamps to the battery only; no 12 V socket plug
Specifications
| Max pressure | 150 PSI |
|---|---|
| Power source | 12 V vehicle battery, via dual battery clamps |
| Battery | Not needed (runs from the vehicle battery) |
| Airflow | 1.80 CFM at 0 PSI |
| Duty cycle | 100% at 100 PSI |
| Max tire size | Not given in inches; VIAIR markets it for RV and commercial tires |
| Display | Inflation gun with 160 PSI inline gauge |
| Hose length | 30 ft primary plus 30 ft extension coil hose |
| Power cord | 8 ft; 23 A max draw |
| Auto shut-off | Yes |
| Included accessories | 45-degree chuck for dual rear wheels, 90-degree twist-on chuck, carry bag, inflation tips, Presta valve adaptor, sand tray |
| Water and dust rating | IP54 |
| Weight | 13.05 lb |
| Warranty | 1 year |
Who it suits
RV owners and anyone with high-pressure light truck or dual rear wheels. VIAIR lists a 150 PSI maximum, a 100% duty cycle at 100 PSI, 1.80 CFM at 0 PSI and an automatic shut-off, with 30 ft of primary hose plus a 30 ft extension, a 45-degree chuck for inner duals and an inflation gun with a 160 PSI gauge. VIAIR says the trigger control lets you move from tire to tire without switching the compressor off.
Who should skip it
Off-roaders airing up after the trail: the 400P lists 2.30 CFM against 1.80, in a lighter kit; see VIAIR 450P-RV vs 400P. Drivers who only top off car tires will find a cordless inflator from our tire inflator list far easier to store.
What we could not confirm
VIAIR does not give a maximum tire size in inches for the 450P-RV, only that it is for RV and commercial tires. The 1-year warranty comes from VIAIR's general warranty policy. VIAIR notes the hose is not recommended in sub-zero conditions and can become brittle in sunlight.
Frequently asked questions
- Does the VIAIR 450P-RV shut off automatically?
- Yes. VIAIR lists an automatic shut-off function for the 450P-RV Automatic.
- How long can the VIAIR 450P-RV run?
- VIAIR rates it at a 100% duty cycle at 100 PSI and says it can run continuously for up to one hour.
- Can the 450P-RV reach inner dual tires?
- VIAIR includes a 45-degree extended-reach chuck for dual rear wheels and 60 ft of hose in total.
Sources
The specifications and claims on this page come from these manufacturer documents. Figures are the manufacturers' own unless the text says otherwise.
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