The New MORRFlate FiveSix PSI Pro Vs. The Popular Viair 400P – Portable Air Compressor Comparison, Testing & Detailed Review & Overview
When it comes to portable air compressors, there are plenty on the market to choose from. While MORRFlate has historically only offered multi-tire inflation/deflation kits to pair with them, they more recently launched an new completely updated line of compressors. The newest entrants in their lineup are the PSI Pro.
These aren’t your average portable air compressors either; they are designed by and for off-road enthusiasts.
Does your current compressor take over 10 minutes to fill 33″ tires? How about 35s, or even 40s? You could probably have an entire meal before a generic air compressor from Amazon could finish airing your tires back up after a long day on the trail. MORRFlate’s air compressors, on the other hand, are made to take on this task without breaking a sweat.
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PSI Pro Technology – Notable Features
I’ll start off by saying that this is not a small air compressor. Although, that’s a good thing when it comes to multi-tire inflation.
Important: It’s worth noting that MORRFlate’s air compressors aren’t intended for single-tire inflation. In fact, doing so will cause excess strain and damage it.
While the smaller FiveSix (Standard and PSI Pro) are capable of single-tire inflation, they’re really designed to be used with at least a 2-tire hose kit with the massive amount of air they pump out. Also, these are total overkill for smaller passenger tires. MORRFlate’s line is intended to be paired with either the 2-tire kit or 4-tire kit. Together, you’ll be aired up back to street pressure before you know it.
The PSI Pro Difference
What the PSI Pro line adds over the standard air compressors are digital PSI gauges and automatic shut-off. At first, I thought this was an unnecessary luxury but now, I can see what all of the hype is about. Hook up your air hoses, set your desired PSI, and the FiveSix PSI Pro does the rest. This way, you get consistent results, every time.
The PSI Pro technology really frees up your time and hands to do other post-trail inspections such as nut and bolt checks, stowing away recovery gear, or even just cracking open a cold one with your buddies.
At the top of the unit, you’ll find button controls, the digital PSI gauge, and a pressure relief valve to be used before disconnecting your air hose after use.
It’s important to know – while this is a direct comparison, the added technology in the PSI Pro model puts it in a different class of compressor. However, these two are not too far off in price, and the VIAIR being a popular compressor, we found that doing a comparison of the two was valid overall. But technically, not a true “apples to apples” comparison. The PSI Pro can be said to be unique in this sense.
FiveSix PSI Pro Specs
- 5.6 CFM
- 10-120 PSI (Auto Mode)
- 1-150 PSI (Manual Mode)
- 50% Duty Cycle (15 Min On, 15 Min Off)
- Thermal Cut-Off Switch
- Pressure Relief Valve
- 12V, 70 Amps Peak, ~45 Amps Running
- ~75 dB From 1ft Away
- Dimensions: 13″ L x 9″ H x 6″W
- USA Standard Color Matched Air Fitting – Universal Coupler (Works w/ Industrial Or Auto Fittings 1/4″ Plugs)
- 6ft Hose Off Of The Compressor
- 6ft Electrical Cord, Terminates In High Amperage Alligator Clips
A carrying bag and gloves are also included!
As for the accuracy of the integrated gauge, I found it to be 1 PSI higher than the gauge on my hose kit and 1 PSI lower than the TPMS readings on my 4Runner. Your results may differ from mine, but it’s something to keep in mind.
FiveSix PSI Pro Vs. Viair 400P Automatic
Viair is a big name in the air compressor space and offers excellent value and performance. Before getting the FiveSix, I paired my MORRFlate 4-tire kit with the Viair 400P Automatic using the adapter found here. While they’re not an apples-to-apples comparison, it’s worth taking a look at as many people may be considering upgrading to an automatic compressor.
Here are the specs for the 400P:
- Permanent Magnetic Motor
- Duty Cycle: 33% @ 100 PSI
- Max. Working Pressure: 150 PSI
- Max. Amp Draw: 30-Amps
- Ingress Protection Rating: IP54
- Max Ambient Temp Operation: +158°F
- Min Ambient Temp Opertaion: -4°F
- Dimensions: 10.87″L x 5.83″W x 7.48″H
- Weight: 10.70 lbs.
- Power Cord Length: 8 ft.
- Air Hose Length: 30 ft.
I also noticed that MORRFlate’s alligator clips were a bit better designed than the Viair’s with the metal contacts being completely covered in a plastic/silicone casing. They are also seemingly larger.
While I have no complaints about the Viair’s performance, I can’t ignore the fact that it and the FiveSix PSI Pro are at almost identical price points. So, I decided to perform a comparison test.
The control variables for my test were as follows:
- Inflate From 15 PSI To 35 PSI
- 70 Degrees Fahrenheit Ambient Temperature
- 285/75R17 (34″) Tires
- Using MORRFlate’s 4-Tire Inflation Kit
Airing Up – Time Results
This is the result that you’re probably most interested in. At first glance, you’ll notice that the FiveSix is noticeably larger than the 400P. I’m not sure if that directly correlates to more robust internals, but here are the times it took to inflate my 34″ tires from 15 PSI to 35 PSI.
Note: The biggest benefit of the FiveSix PSI Pro is the ability to step away from other tasks while it does all of the work. With my Viair, I have to constantly monitor my tire inflation progress.
- MORRFlate: 6 min 41 sec
- Viair: 10 min 29 sec
It would seem that the added size and heft of the MORRFlate is well worth it if you value speed.
Operating Temperature Results
Not that I advise touching any part of your air compressor other than the handle during or after use, but the unit temperature does play a factor in how long it takes everything to cool off to put away. I decided to measure one of the hottest spots on both for consistency, where the built-in heatsinks were.
- MORRFlate: 150.4 Degrees Fahrenheit
- Viair: 119.3 Degrees Fahrenheit
While the MORRFlate did inflate my tires significantly faster, it did get much hotter. If you usually just throw your air compressor in the back of your truck after use, that’s probably not a big deal. However, if you usually wait for it to cool off and throw everything back in the storage bag, you may spend some extra time here.
It’s worth noting that although the FiveSix PSI Pro itself gets hotter, MORRFlate attached a 6ft hose to dissipate heat so that you can disconnect the chuck right after operation. Since the adapter and chuck attach directly to the Viair, it gets extremely hot during use and you have to wait for it to cool down before disconnecting your hose.
MORRFlate is aware that with the speed of inflating comes heat. Due to this, they include a pair of their Groovy Gloves with the purchase of a compressor.
Noise Level Results
I’m not sure how important this metric is, but I ran these tests while my kid was napping and neither compressor woke him up, fortunately. Noise level measurements were taken standing next to the compressors.
- MORRFlate: 74.9 Decibels
- Viair: 72.3 Decibels
Both air compressors are moderately loud, but not so much that you can’t converse with your buddies while they’re running. There’s a negligible difference between the two, so we’ll call this metric a draw.
Air Hose Kit Compatibility
One feature about the MORRFlate compressors that I really like is the integrate hose and universal fitting. This allows me to connect my hose kit directly to the compressor without needing any adapters, thus also creating fewer points of potential air leakage.
With the Viair, I had to purchase an adapter fitting to use it with my 4-tire hose kit. This wasn’t a huge deal, but it resulted in a less-than-ideal extended connection off of the compressor.
Overall, the MORRFlate FiveSix PSI Pro is a solid option and a worthy competitor to the existing brands currently on the market. The ability to get other things done while my tires inflate versus constantly watching my TMPS is a game-changer in terms of time efficiency.
If you don’t need the digital pressure gauge or automatic shutoff feature, the standard FiveSix has the exact same inflation capabilities at a more affordable price point.
This isn’t a budget air compressor by any means, but if you’re in the market for a mid-level model that can easily handle over-sized off-road tires, it’s hard to beat. Being a compressor designed by and for off-roaders, it really does have a niche (albeit, a growing one) user base.
If you’re driving a crossover on stock tires, this likely isn’t for you. I’ll likely keep the Viair for single-tire top-offs or my wife’s Crosstrek, but the MORRFlate set-up is definitely coming with me on every trail ride.