Side by Side Comparison of: Viair vs Kensun

Excellent product, have used Viair in commercial applications with no problems. This little compressor is ultra quiet and fast compared to the box compressors sold at big box stores. Inflated my 275/R15 truck tires from 25 to 33 PSI in about 20 seconds. Did one tire with same readings from my old box compressor and it took about 3 minutes. Solidly built, nice compact size, and does what a tire compressor should do, fill your tires fast, quietly, and with no vibration movement (first tire compressor I've owned that didn't require keeping a foot on it).

I love this thing. It works great. I have used it to check and fill tires as well as toys. I plug it into the car jump starter box for mobile use, though I doubt that would work well for high pressure filling. It's great for rodies, though.

The only thing I'd change is a better holder for the filling accessories. The ball filling needle bent at some point, but it's still usable, and very replaceable anyway.

I definitely recommend this model if you want a very solid basic compressor for the car.

Seems to be high quality and comes with nice carrying case. It's by no means "silent" but it is quiet enough that I can use it early in the morning without fear of waking the neighbors (my driveway is mere feet from neighbors' windows). Also comes with a long power cable so that you can reach your car tires easily.

I can't speak to longevity since I use it infrequently and have only used it a couple times so far. The connector is solid metal and tubing is thick, so I would guess it will last a long time.

I bought this two years ago when I had chronic bad luck with leaks in my tires. It's small, so I can keep it in the car. It has a pressure indicator and the electrical cord to the car cig lighter is really long. It's easy to use. I've bought a new car and again, my bad luck has reappeared. Thankfully, I don't have to stand in line at the station to use the air pump. Easy peasy, I'm on the go again in 5 minutes.

Purchased this unit because it was cheap and had great reviews and I can see why.My tires kept going flat every 2 weeks and I got tired of having to drive on base or to the gas station and pray the air pump was working which 9/10 times its not and who wants to pay a 1.00 for air right? So I got this and let me say first thoughts were is this gonna be strong enough because the unit is small,like really small and to my surprise it actually inflated my tire with no problem (aftermarket 22 inch rims) The pump comes with attachments for other types of applications to blow are in like a inflatable bed or basketball.It als features a fuse on the power cord that has a cover on it.I saw reviews of people saying the pump blew a fuse in their car but it did not blow mine I kept the car running as I used it (2008 Dodge Charger).This is a great pump and I have no complaints also another plus is the extremely long power cord!

I have had this compressor for over 2 years and it has served me well doing the jobs I purchased it for. It is good value for the money. Recently I developed a couple of issues with the unit which was rendering it almost unusable. I called Kensun customer support and even though I was unable to provide purchase details they were able to look it up and I was out of warranty. After I inquired about any repair service availablilit ythe customer service representative offered to replace the unit for me even though it was out of warranty. Amazing customer service from finding my purchase with just mailing address to the offer to replace. I will look for Kensun products in the future for sure.

I have only used this item x 1 since I received it. I added 5 pounds air to each of 2 minivan tires using the AC110V plug. It took no more than 1 minute to pump in the air to the proper tire inflation. In the past I used a manual tire pump which took about 5 -10 minutes per tire to pump the same amount of air into each tire . The gauge on the Kensun air compressor indicated when the desired tire pressure was reached The pressure gauge on the Kensun air compressor gave me the same readings as my manual tire pressure gauge.The Kensun air compressor also comes with on/off switches for the DC 12V and AC 110V depending on which power source is used to power the Kensun air compressor.It also comes with:1. a 4.0m cord with AC 110V plug2. a 3.0m cord with DC 110V cigarette plug3.DC 12V socket4. a 1A fuse for AC 110V5. AC 110 V socket6. adapters for car tires, balls ,inflatables, PVC boats7. a carrying case Kensun customer service emailed me shortly after I received my air compressor. They wanted to know if everything was ok with my order and to contact them with any questions or concerns. As it turned out one of the plastic components of the DC cigarette plug that had been shipped with the Kensun air compressor had been broken into multiple pieces. I emailed Kensun about this with attached photos of the broken DC cigarette plug. Kensun emailed me back and stated that they had already sent me a replacement DC plug. I had not requested a replacement in my email to them. Kensun did so on its own volition. I also noted that the Kensun air compressor and accessories were extremely well packaged for shipping with lots of padding.As I said earlier, I have only used this compressor X 1. At this point in my ownership of this product, I would have to give 5 stars to Kensun air compressor and Kensun customer service.

Filling Station Pumps are harder than ever to find, often broken and always cost money. Enter Kensun - this product has a ton of of features:1) In includes the adapters to power it from your CAR or your HOME.2) Included Gauge is easy to use and read and accurate enough to be safe.3) A person who has never a powered inflator will understand it 1st try.4) The included adapters will help you with your sports or pool equipment.5) It is small and includes a good quality soft storage case which makes it easy to stow away (i.e. trunk) and is worth its weight in Gold when you need it!6) I had a problem on the first unit that was shipped - but this seller contacted me back and fixed my problem immediately and helped me BEYOND what I expected. Credit card points, being busy and being a person who loves shopping that consists of finding the lowest cost products neatly stacked at my front door makes me shop Amazon heavily. This seller/product's item and customer support grades A+ as compared to the hundreds of products I receive via Amazon Fulfillment annually.RECOMMEDED

Needed to put air in my tires. When we had a bit of a cold snap the Low Tire Pressure light lit up on my car's dash. Tried using the coin operated air compressor at the gas station to inflate the tires, but that didn't work. I decide to check out tire inflator air compressors here on Amazon. After checking out many models available I decided to purchase this one. I like that it can be used with a regular home outlet and with the 12v car plug. Also liked that it looked like it was solidly built, based on the photos and the other reviews on here. Also liked that it can be used for bike tires. It came in a black storage bag, and included the 110 v home wire and the 12 V car plug. Has a separate on/off switch for each power source. Also came with other attachments to fill up balls and other inflatables. Directions are minimal, printed on a small piece of paper. Don't know much about cars or specs on tires or air compressors so i just wanted something that would be easy to use and decent value.Basically, after checking the tire pressure needed, I lugged the unit in and connected it to the tire. Turned it on and noticed a few things. It's rather loud. It vibrates a lot so that when you're looking at the gauge the needle vibrates as well. . Topped off the tires in a few minutes and used a tire pressure gauge to check the tire pressure.Was a good deal for the price. Handy to have in the car when needed.

Believe it or not this is the first air compressor I have ever purchased! I always have done it the 'hard way' & pumped up all of my bicycle tires with an ordinary hand pump. A friend saw me struggling away & recommended the Kensun D1002 AC (Home 110 V & 12 V car.)This piece of equipment is very easy to use with a very accurate & easy to read gauge, an easy to attach pump hose, & a power cord that is certainly long enough to make most job's accessible. I only wish I would have purchased this a number of years ago & I would have saved myself a lot of hard work!

I now own 2 different models. 1 is AC/DC and the other is DC only. They are both excellent products. Both have a solid weight to them so when in use they don't vibrate around. Both have excellent connectors. Both units pump air extremely well. Both units are reasonably quiet.The DC unit comes with a light and a programmable tire pressure gauge. Another outstanding feature to mention about Kensun is their customer service. Here is a pic of the 12v unit. Hope this helps.

After reading the reviews I opted to go with the 70P which has a shorter stroke and more torque than the 80 series. At least one reviewer stated the power cord was too short, but I was able to reach all four wheels on my F150 without any trouble.

Top quality machined parts, quiet and not so much as a bit of hesitation when I started it on my wife's Honda.

The only negative I found was with the carrying case. For something so well constructed it seems like an oversight that there wouldn't be a separate pocket for the little bits that come with the pump. It's more likely than not they'll never be used, but if they were, the odds of them being there in a couple of years is doubtful.

This one's going into my wife's car and I'll be getting a couple more for my vehicles.
And that'll give me plenty of spare bits... just in case.

Very efficiently gets my tire pressure up when the temperature goes down and I need to "top off" a few PSI. Takes no time at all to get the tires up from ~30 to ~35 PSI. I haven't tried using this to fill a tire from zero and don't think I'll ever need to.

At $30-40 it will take a while for this to pay for itself in saved quarters at the gas station, but it's worth it for the convenience of being able to fill my tires at home on my time, rather than in a dark gas station whenever I manage to find a working pump.

Unlike the gas station and most other pumps, to attach this pump to the nozzle you need to screw it on, which i suppose creates a tighter seal but requires a little more time per tire, and causes more air to escape when you unscrew. Not really a big deal.

I do wish the included case were a little larger. Everything fits but only if the cables are wound up very neatly.

I was skeptical because I did not want a unit like my last one, that was so loud that people 100 yards away turned their heads and that bounced around and danced while it attempted to fill a tire. This is unbelievable, in that it is very quiet, and does not move at all. The brass metal piece that actually screws instead of compression fitting to the valve stem is also a plus. The only negative is that the unit does get hot otherwise a 5 star rating. I left it on for about 3 minutes to bring my tire up to capacity and it does get hot. But this is a great trade-off in my opinion, and I do highly recommend this little unit. Just nicely done and worth the money compared to all the other junk units out there near the same price. This is truly a case of you get what you pay for and this is worth the small difference.

First, let me say that this is very high quality and works well. I expect it to last me a very long time.

The big problem I have (and the reason why I am giving 4 stars instead of 5) is because it blew out my cigarette lighter's fuse link on my 1999 Subaru. This is my fuse LINK, not my fuse (which was fine). After much research, I learned that I had to take the car practically apart to get to the broken fuse link that is right behind the cigarette lighter.

Once I was able to get the fuse link out, I needed to purchase a soldering set and a multimeter to correctly repair the fuse link. All this took a LOT of time (around 5 hours total). Once I repaired it, it took another 30 minutes or so to put the hold thing back together.

This air compressor (and any air compressor, for that matter), needs to have a switch to set the sensitivity of the 30-minute safety off switch to prevent cigarette lighter fuse links from blowing out. If you have a fuse link cigarette lighter, it WILL blow out before your air compressor does! And that will cost you lots of time and some money to fix. I would have preferred that this air compressor blew out first. That might have cost me $10 more that what my repair ordeal cost me, but it would have saved me 6 hours of time.

I only took one star off because I'm pretty sure all other air compressors at this price point don't have a more sensitive fuse safety mechanism.

I needed a new tire inflator and found this one as one of the best reviewed ones with reasonable price, and I have to say, for the most part it lives up to everything I read.

It inflates tires much faster than other compressors, not instant or anything, but definitely faster than ones I used in the past. Also it is much quieter than any air compressor I've ever used before to inflate tires. It also didn't get anywhere near as hot as ones I've owned in the past, even after pumping up an additional 10 psi each for 4 tires.

It isn't perfect though, there is one downside that all portable inflators seem to have, and that's the pressure gauge. Compared to my digital pressure gauge which has been verified to work, the gauge on the Viair was 5-10 psi higher than the actual pressure for each tire, and varied how much it was off per tire. Not a big deal as I've had issues like this before, but the discrepancy was a bit more than expected, for that one issue it only gets 4 stars.

I've had this mini air compressor for about a year. I had purchased the same model previously and really thought it was a excellent product. Back to the latest unit. About 6 months ago, the ac plug in the unit developed a short. Therefore, anytime I used the unit I had to physically hold the ac plug just right to inflate a tire. Okay, not fun but effective. However, this past Sunday I attempted to inflate/top off my motorcycle tire as it was about 5 pounds low. Halfway through the process, the compressor started smoking and quit. That was all she wrote for this unit.

In defense of Kensun, my original unit still works without any issues. I can only suggest that Kensun might want to review their quality control process because the 2nd compressor was a dud.

UPDATE!! KENSUN sent me a replacement unit FREE OF CHARGE! I've added 2 stars to my previous rating. Will update later when I've had a chance to use.

Well I thought this unit would at least last longer than the time it took to inflate one tire on my wife's car. After that, the unit began to smoke, made a loud popping sound, and stopped working completely. I'm returning it this week.

UPDATE. After reading my review a representative from Kensun reached out to me and offered to send me a better compressor for my trouble. I can't say enough about their customer service. I used it to inflate a couple of kiddie beach toys and a tow tube and it seemed to work fine. Much better than the first one I was sent.

UPDATE: 07/04/2016
Contacted the Kensun Customer Care dept. and explained the issue I was having with the air compressor. They will ship a new replacement unit at no charge. Have not received the unit yet but will update the review stars now to 4 stars (from 2 stars). The unit worked as advertised before it broke after 4 uses. I probably got a defective unit which they will replace. I give the Kensun company 5 stars for their excellent customer service.

Buyer beware!! This Kensun air compressor broke after using it only 4 times. Now the unit shakes and vibrates violently and the dial gauge popped out of its socket. I don't want to continue using it since the motor sounds like it's going to explode. I purchased this in March 2016 and I am not able to return this item to Amazon since the return policy for this has expired. I should have purchased the other air compressor from a different manufacturer that was selling at a higher price.

This is a very cool device that saves you a lot of hassle. I was always struggling to reset my vehicles' tire pressure at gas stations with those ugly age old pressure monitors attached to the Air stations. Inaccurate readings, inability to reach the spare below SUVs and constant hunt for quarters were some of my issues. I finally researched online and got this compressor. I now use this to top up air in my car tires in the comfort of my home, inflate sport equipments and it works pretty well. I settled for this as against the Slime 40022 because that had a digital gauge and there were some reviews on the readings not being accurate. This one has an analog meter which is pretty accurate (not down to the decimal). This is a 12V compressor which means it wont blow the fuse of smaller cars and SUVs (be careful to check what your car can support before you buy this or the bigger 15V varieties also on amazon). In terms of time, it took me about 10 minutes to inflate a dead spare from 10 psi to about 60 psi. I gave it a break in between just to ensure it does not get overheated. So if all is well, why did I take away a star? Some areas of improvement: 1. the screw on nozzle does cause very little air to leak out as you're screwing it on/off the tire. A clip-on version would be my preference. Sometimes the screw threads also need a little nudge before they agree to come off. 2. The length of the inflate tube on the compressor should be a little longer. I had to set the compressor on a little stool for nozzles that were to the top of wheel when parked. The length of the electrical cable is manageable even though a slightly longer one would have been ideal. 3. The weight of the compressor is too light and it has to be held down while it's doing its thing else it keeps vibrating and wobbling on the floor.
All these are minor issues but overall I am very pleased with the purchase and this works well for what it is supposed to do - INFLATE !

Bought the item in November but used it for the first time a few days ago. I was probably just into 15 seconds reinflating my medicine ball when the pump thumblock broke at the neck where it's connected to the air hose. The connection is made of plastic and just snapped when I applied a little pressure to keep the thumblock in place. Returning it for a refund.

===============REVIEW UPDATE: 1/12/15 ========================

I am upgrading my earlier One-Star rating to Four-Star for Kensun's EXCELLENT CUSTOMER SERVICE!!!!

A bit of history about this order.. I was actually looking for a unit with AC/DC power option and auto shutoff mechanism. I thought this item had both functionalities but it turned out the unit does not have auto shutoff mechanism. As early as Nov 18 (I received the unit in Nov 16), Kensun already offered to refund because they don't have any model with both functionalities I was looking for. However, I got side-tracked with all the holiday activities and forgot to request a refund until January when the unit broke after I used it for the first time.

I first tried processing a refund with Amazon's online return/replacement system but the system declined the request because the allowable return date has expired. Nevertheless, Kensun offered to replace the broken unit with a new one without me having to return the original back. In addition, Kensun offered a different model with digital gauge with auto shutoff function and worklight, ALL FOR FREE! With all that, Kensun still offers FULL REFUND if I am not satisfied!

Both the replacement unit and the new model arrived a couple of days ago. NOW THAT'S CUSTOMER SERVICE!!!

I have tested both units. Both units are working but the one with digital gauge auto shutoff function is much more powerful. It was able to pump in 5 PSI (from 27 to 32 PSI) in about 50 seconds with the body still cool to touch. The replacement model (without digital gauge shut off function) took 3 minutes to pump in 5 PSI with the body starting to get warm. I noticed with the digital gauge shutoff function that it has to be set at 2 PSI above the target PSI to attain the desired pressure. For instance, to get to my target 32 PSI, I found I have to set the digital gauge at 34 PSI. Once the digital gauge reads 34 PSI, it continues pumping for a few more seconds before it totally shuts off. Both units are not "quite operation" by any stretch of imagination but I can live with that.

I am keeping the replacement Kensun AC/DC Tire Inflator for home use since it has AC power option. On the road, I am bringing the model with Digital Gauge Auto Shutoff function since it's more powerful plus it comes with built-in worklight.

I don't know how both units will perform if tested with more prolonged use but for now I am a very satisfied customer.

For reference, I've tested the units with size 215/70R16 tires on my RAV 4.

Air pressure gauge is not correct. Also the increment lines are not correct. Why would I care about 22.5 pounds. How about 10,20,30,40 with half lines in between. PSI increments are pretty universal how can you mess that part up in production.

This product has worked well to fix soft tires and even some flat tires, it works well. The only reason it did not get a higher mark is because the adapter that plugs into the car is really cheap and broke the second time I used it. I was able to get in touch with Viair and they sent me a new adapter, I paid for shipping.

The unit feels solid, is small, and is quiet. One big drawback is the plug that goes into the lighter receptacle is too large. I had to push it harder than I wanted to get it in, but it was so hard to extract that I worried about it damaging the lighter socket in my 2014 Toyota Avalon. Also, the gauge dial goes to 150 psi, so it is hard to fill a car tire with precision. Differentiating between 31-33 psi is inexact. This might not be so much of a problem filling something requiring more pressure and less precision than a car tire.
Finally, the gauge registers about 3-4 lbs high as measured by a stick/pencil shaped gauge and cross-checked with a new Joe's Racing Gauge: http://www.amazon.com/gp/product/B00404WDUC/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

This pump so far has been reliable. I've only had it a few months. Two complaints: (1) The gauge divisions are not in what I would call normal units - 1, 2, 5, etc. No, the spaces between lines work out to something like 7.5 PSI intervals. (2) the end of the hose screws onto the nozzle, rather than being clamped down - this works out fine, but is a little awkward.

I've used this to top off truck as well as car tires. No problems. The soft carry case is a plus - convenient and easy to stuff things back into when done.

Time will tell if this lasts.

I just received this small, portable air compressor because one of my tires has been chronically low on air for the past two months - needing to be refilled every week or so. I put this little compressor to use just yesterday, and it pumped up a rear truck tire form 17 PSI to 35 PSI in a matter of minutes. Just keep the engine running when you have the compressor on (since it plugs into your car lighter). The downside is the pressure gauge. I have another digital tire pressure gauge that always reads 10 PSI lower than the compressor's pressure gauge. I tested the digital gauge on other tires, confirming the digital gauge is correct. This is why I dropped 2 stars off. However, this unit does what it is supposed to do to: pump up your flat tires.

I bought this product to store in the trunk for times when I need to fill up my car tires. I've had two other compressors in the past that have worked quite well albeit being very inexpensive. While this product itself is a fair price and includes a lot of additional accessories to complement the package, there are just a few things that are issues for me.Firstly, the compressor is incredibly loud. Your neighbors will definitely hear this and wonder what you're doing. This wouldn't be that big of a deal if it didn't take forever to fill up the tire. Over the past 3 months of owning the product, it has taken me nearly 30-45 minutes to fill up 4 tires with about 10 PSI each after multiple uses. This to me is just incredibly painful. Other than that, never had any problems with any of the cords and the air pressure gauge has always been accurate.Unfortunately, my time is precious to me so I will continue my search for a faster compressor. 3 stars for being functional.

The product works, but it is very slow. Adding just 2 pounds of air to a tire takes quite a lot of time. The unit is super loud too and not in a good way. Ear plugs are actually highly recommended if you are going to be near this thing when it is on. I have not used the cigarette lighter power option, only the standard power cord. The air pressure gauge is not very accurate, you will need to check with a separate gauge. The connector itself is fine, never had any problems with it not engaging or coming off while the unit was on. It does indeed get the job done, but it doesn't give off a high quality impression in any way.I struggled with whether to give this a 2 star rating or a 3 star rating (I would probably give it 2 1/2 stars if that was an option). I amended my review to give it 3 starts since it does work in terms of getting air into the tires, but the downsides are how long it takes and the very loud and annoying noise it makes while doing so.I just don't know how this unit would compare to other models of similar design and cost.

I used this product to fill a lawn tractor tire. It took quite a while to fill the tire, but it did eventually complete that job. Four days later I tried to use it on a car tire that was low. The unit would not work at all. Apparently the fuse is blown. If so, I don't know what kind of fuse I need to replace it. I guess I'll take it to an auto parts store and see if they can determine what kind of fuse to buy. No instructions or manual came with the unit. If you want to spend $40 for a one time use, then this is the product for you.UPDATE: I contacted the manufacturer to report the unit failure. They immediately offered to send me a new one. Was told there is a two-year warranty. I would give their customer service 5 stars.

Update Mar 15/2016 - Still giving 1 star for product, but 5 stars for customer service. I was contacted the day after my review and was told to pick a new air compressor (any model, not just the one I ordered) and the would send it out - no charge for the compressor and no charge for shipping.

I bought this January 2015 and used it 6 or 7 times in 2015.

The last time I used it (October 2015), it was to pump up a couple low tires on my vehicle. It overheated on the first tire, but after 30 minutes it was ready to go again. It overheated on the second tire, but by the that time the tire had reached pressure it needed to be. I pulled it today to pump up a couple bike tires, but it still doesn't work.

Very unimpressed with this pump. I recommend looking at a pump made by another manufacturer than Kensun.

Shortly after receiving the Kensun YS-205 air compressor, my husband and I needed to use it to fill a tire on a dolly and a wheelbarrow. When we plugged it in and turned it on, nothing happened. We thought maybe it was the power outlet so we tried a different outlet...still nothing happened when we turned it on. After questioning the electricity in our house, we tried using the plug provided for the car. The YS-205 worked when plugged into the car, but we could tell it wasn't working well. It was taking much too long to fill a small tire. Two other points - I thought it was interesting that we received an email from the seller about the product checking on our satisfaction with the product and to contact customer service with any issues. It was almost as if they knew the product was defective. Second point, their customer service was good. They refunded me right away and did not ask us to mail back the air compressor. It went in the trash. I wouldn't recommend purchasing this product. I was surprised and disappointed after reading so many positive reviews about the product.UPDATE: 1/7/16 I received exemplary customer service from Kensun. Joe, a department manager made it a point to connect with me regarding the faulty product. He tried to connect with me via phone and also via email. Here's what he had to say:I am terribly sorry that you had trouble with our product. Please accept our sincerest apologies. We consider product reviews as opportunities to improve our product and service. I would like to help you resolve the issue you are facing. I have taken the liberty in sending you something without confirming it with you first, (I did try and call a few times) I hope you don't mind. I have sent an upgraded model. Obviously this is completely free of charge. I have included a special adaptor which will allow you to plug it in from a home outlet too. I would also like to touch upon a small point mentioned in your review. You mentioned you received an email from us asking about your satisfaction, and you understood from that, it's almost as if we knew it was defective. I would like to point out, every customer receives that email no matter what they order from us. We try to go the extra mile for our customers and usually it is appreciated. I hope that clears it up. We at Kensun stay with our customers and want them to be happy with us and the products.The customer service received from Kensun is exemplary. Joe went the extra mile to ensure I was happy. Very few companies do this, usually it's the consumers fault or problem. Anyway, I while I haven't tried the new compressor yet, I'm sure if I have any trouble with it, Kensun will make it right!

The pump definitely gets air into the tire, however the psi gauge is not calibrated correctly at all and reads about 10-15 psi high. I'd recommend you check the gauge on a tire you know the psi for and see that it displays correctly. Because I didn't catch it right away, now I'm stuck with an inaccurate one

I read the reviews and it is obvious that employees are making reviews to make this better then it is. I followed instructions plugged it in and started my car. 3 fuses later I gave up. I did go and buy a converter to go from my battery to 12V cigarette connection. I did not blow fuses this way.
The numbers being stated that is where I have a big problem. I bought this for a Stand Up Paddle board. It requires 15 LBS. Once I bought the connection so I did not blow fuses. 18 Minutes 22 seconds to get to 15 pounds. No pressure on the board so you be the judge. Your car sitting on top of a tire and they claim minutes to be to pressure. Not going to happen. Good for the price but I wanted to buy 4 more for Xmas for friends with SUP but will not be buying this one

Smooth, quiet operation. Really nice compressor when it worked but after only five or six uses it mysteriously died, leaving me with a low tire on my truck. I wasn't even working it hard, just topping off the tires periodically. Of course it was past the 1-year warranty period. Others seem to have had good luck with this compressor so mine was probably just a bad unit.

I bought this to refill my Dodge Dakota tires after coming off the beach near where I live. I have to lower my tires to 22 PSI to safely drive on the beach but I need to bring it up to 35 PSI to safely operate on paved roads. Often the lines at the air fill ports are long and the hoses provided are often broken or missing. I thought having a nice little portable air compressor would do the trick to get me on my way. The first time I used this machine, it cut out just as the first tire got to 30 PSI. I figured out it must have been a fuse in my truck since the outlet gets regular use from charging my cellphone. Just my luck, I have no spare fuses with me. When I got home, I replaced the 20 amp fuse which was blown and kept a few extra in the glove box in case it happens again.

The next few weeks I had no need for the compressor because the lines at the air fill ports were short. Last week, I had a need for it after the lines went long and only 1 out of 4 air chucks were working. I pulled out this compressor hoping for a fill only to have it blow the same fuse again just as it hit 30 PSI. I thought maybe it was another bad fuse so I replaced it on the spot. I continued to fill the tire hoping to get it to 35 PSI and after 15 seconds - POP - it blew the same fuse again.

What is misleading about this product is it states "UP TO 150 PSI". That is total bull unless you are filling up a bike tire. It warns you must have an 15 amp rates outlet. Well mine uses a 20 amp fuse and it still blew. The bottom line is this product should not be relied upon to inflate any mid-size car or light truck tire if you have to put more than 30 PSI in it. Also, I wouldn't by another compressor that relies on the power outlet. Get one that uses gator clamps to attach to your car battery. It's a bit of a pain in the rear to have to open up your hood but if you are in a pinch, the voltage direct from the battery will save the day - just not with this product.

It is beyond the time allowed by Amazon to return it for any refund so I'm stuck with it. On the bright side, my bikes will never be flat!

I bought this Vair 70P portable compressor--plugged it in my 2002 Saturn SC 2's 20 AMP accessory socket FIRST--Started the car up, and put 10 lbs of air into one tire---when the air gauge reached 32 lbs. IT QUIT RUNNING, and BLEW THE CAR FUSE! And it never worked after that! I Contacted Formosa Covers and they had a replacement on the way---before FEDEX picked up the defective one! Now that's what I call service!! Used the second one, and the same thing happened! I liked the unit itself--it's quiet---doesn't vibrate all over, and I really like the brass screw on chuck especially since I have a lot of arthritis in my hands. Doesn't do any good to have it if it doesn't work. Formosa Covers is an excellent seller. No, I do not recommend this air compressor!

OK.... first use was fine (VERY noisy, but fine). I spent approximately 4 minutes inflating two bike tires... great. Now on to test #2, inflating a child's swimming pool... NOT fine. After 15 minutes of use (and barely any sign that there was air in the pool), the compressor shut off and now it will not start again. I removed the fuse and visited two hardware stores, only to find they do not stock that size. Next stop will be Home Depot, but that will have to wait until tomorrow. I just e-mailed Kensun for information, because I still don't know if I simply blew the glass fuse OR blew out the entire motor. Updates to follow.UPDATE: 9/7/16: Received 2 e-mails and a phone call from Kensun offering a free replacement to a better model air compressor. As this is similar to the messages others on here have received, I pondered it for a while, but opted to just return the unit instead. I don't want to go through the hassle of shipping back and forth.

I noticed today, when looking for something to replace this item with, that it's now dramatically reduced from the price I paid. I'm not surprised; it was a total waste of money. I bought it to add air to my tires at home when the TPM warnings light up. A few psi will do it so I mistakenly thought, based in part on previous reviews, that this machine would do the job. The first time I used it, it did; sort of. It smoked like crazy, but it pumped air. I had an e-mail conversation with the manufacturer and they suggested it could be dust burning off on first use - hmm?? I kept it and used it for the second time today. Part-way through the job of topping up the tires to satisfy the TP monitor, it started smoking then shut down completely. Left it sit to cool off but it's dead.Addendum, 24 hours later: The Kensun customer relations folks are certainly on the ball. I've received an e-mail and a voice message offering me a different (more expensive??) model at no cost. Often, how a company responds to complaints can offset a poor experience. I'm impressed by their efforts and have added an extra star to the rating in recognition. DS

When my cheap, plastic Campbell Hausfeld unit from Walmart died, I thought it was time to get a better piece of equipment and selected this after looking at reviews. The unit works, but it is both louder and slower than what I had before. I had hoped for much more. The unit does not have automatic shutoff. The range on the pressure gauge is too high (up to 260 psi). This makes it very hard to see the difference between 25 and 30 psi. If the gauge only went to 100 psi, it would be much easier to read ... especially considering that the indicator needle vibrates over about a 10 psi range (which the gauge on my old cheap compressor did not do). I believe that these are made in China, and when I first opened the box there was a very strong solvent smell. The company has been sending me emails that say if there is any problem, they want to make it right. I appreciate their effort. My unit works, it's just not that good for what it costs.

Very disappointed. Purchased it to keep car tires properly inflated; for a car tire, this is NOT the best choice. First problem, the inflation rate is far too slow for any automotive tire. At first I thought the unit was not working; it made such a loud rattling noise while running and the featured psi gauge wasn't rising. Eventually I concluded it simply took a very long while to increase tire pressure, far longer than what I was accustomed to using other units. After increasing pressure by 5psi in all four car tires, I could see slight smoke coming from the unit. Second problem, the featured pressure gauge is not scaled well to read pressure from 0-40psi; the markings are too close together. Beyond 40psi, the scale is enlarged for better viewing making this gauge useful for reading higher psi, such as for a bicycle tire, but not for reading the psi range of a car tire. In summary, consider this unit if you only need to inflate bicycle tires or perhaps other small items. The fact that it plugs into household current is nice and I like the way it clips to the valve stem on the tire. But purchase something else to inflate car tires.

These people stand behind their product. Well made durable compressor. Not super fast but can inflate large tires if you have the patience. 12v or 110v is a very nice option. No auto stop. But, I had a hose come off. Instead of asking me to send it in or try to fix it, they just sent me a new one free, no postage, no questions asked!!!!Now, I have to revise my rating. The same thing happened with the replacement compressor as with the first one. The inflator hose came off in side the unit. I tried taking it apart to fix it but not made to be repaired. Also it overheated and stopped working more and more often. But without the inflation hose, it's useless.Good design..poor quality

Bought this to keep it in the trunk for emergencies and because most gas stations are a pain to actually use their air pumps, that is if they're actually working.Docked a star because yes, it is loud. I read some guy said its not. Maybe he's hard of hearing. Do not use this at night or in enclosed spaces.Also its slow using DC power. They recommend having the car running but even then its pretty damn slow. I'd say its about 1-2PSI per minute. It took me about 5 minutes to get from 20-25psi on a Corolla with OEM tires.But, having the convenience of not having to deal with gas stations earns 4 stars from me.*EDIT*After a few months of living with this, I cant recommend this product anymore. The fill-up times are absurdly slow, I had a nearly flat tire and had to pump at it for 30 minutes to even get it near drivable conditions. I left it at 2-stars because if you were completely lost in the middle of nowhere, sure you could probably get your tire filled up eventually but it'll take so long you could've probably walked over to the nearest town and back.

Blew my 20 amp lighter circuit in about 15 seconds - twice! Junk.

The Viair 70P unit I received would not inflate beyond 30psi. Neither the motor nor the pump were even warm to the touch but the unit stopped running at exactly 30psi (measured with a guage). When detached from the tire, it restarted and would run indefinitely. When reattached to the tire with 30psi, it would run for a fraction of a second before shutting off again. I used it all of 3-4 minutes in total.

Though many have reviewed this positively I can't say my experience inspires enough confidence to order a replacement so I am returning it for a refund. Very disappointed.

The first unit came broken, (the plastic housing for the plug that goes into the car was in pieces) and the packaging was open. There was a brass nut in the package that had nothing to do with the product, so this clearly wasn't a new unit. Amazon quickly replaced it, and I was happy to have it for an emergency device in my trunk, after having tested it. The first time I had to use it, I inflated one tire, and moved to the 2nd tire to top it off. About 10 seconds later, the compressor died. Total run time was probably 3 or 4 minutes. I have a Malibu, so not oversized tires or anything out of scope. I started the car before plugging it in. Followed all the rules. I let it cool down, tried again, nothing. Replaced the fuse, nothing. The unit is just dead. With all the 4 and 5 star reviews here, I had high hopes this would be a reliable compressor, but not for me.

I bought this for my husband so that we had a compressor in case of emergency on road trips. He had asked for it specifically. Christmas morning, he opened the box hoping to try it out and was disappointed to discover that the plastic clip that screws onto the power connector and holds the fuse in place was broken--well, more like shattered. It was in four pieces inside the convenient carry bag.

Amazon was great with the return and cross shipped a replacement. Unfortunately, the new unit arrived with the same defect. The only difference this time was that the plastic piece was in three pieces instead of four--still completely sealed box inside the convenient carry bag. After that, we returned it for a refund so I really cannot say how it works. Thanks to Amazon for taking care of us on two consecutive defective products. Use great caution when ordering this product--there's a good chance you won't receive it in working order.

Use it one time worked perfectly.then second time didnt turn on,did try it on 3 different cars and no results...the compressor has a Fuse which was OK,so the best guess could be factory defect.

I purchased one of these in June 2015, and have had two problems with the compressor.1) Upon first receiving the unit I found the cord for wall plug-in would not stay securely attached to the compressor when in use. It was simply too loose, and would shake out when the compressor was turned on. I called customer service who sent me another cord, same problem. I thought it too much trouble to send the compressor back (yes, I'm sure I could have, and maybe another unit would have been better), and have been working around this issue by laying the compressor on its side whenever I use it.2) Second issue, and a lot more problematic, is that after 1.5 years of use the air hose has sprung a leak where it connects with the valve clamp. So, it is essentially now useless. Good thing I discovered this at home, rather than on the road somewhere under less ideal conditions, which was the primary reason for buying this compressor.Net net, have experienced poor quality with the unit I received and I'd be reluctant to have one of these in my trunk and trust it to work when you need it to.

PROS:1. 110v & 12v plugs2. Nylon Storage bag.CONS:1. LOUD!2. Could not get past 30PSI.3. Smells like it was transported in the tank of a gasoline truck.I plugged the unit into my garage 110v outlet, then I clamped the end onto my car tire valve stem and powered the unit on using the side mounted 110v switch. The gauge read 30psi, which matched my cars monitoring sensor, so I though there might be some hope for this thing. After 2 minutes, the gauge dropped to 25psi. I turned the unit off but could not hear or feel any leaks as i ran my hand along the hose and connector. I turned it back on and left it running for 5 minutes, but there was no change.I'm not sure if I want to keep it around for bicycles & balloons or throw it away.

Kensun YS-205 pump review: If I could give this 1/2 or no stars, I would. Do NOT make the same mistake I did. After years of topping off my car tires with a bicycle pump, I decided my back and my time both needed saving. I was excited to find this pump on Amazon: sounded great, overall seemingly good scores -- and I was thrilled when it arrived quickly via Prime. That's where it ended.Excitedly, I went out to inflate my car tires in both cars. I thought something was just WRONG with it. I even pored over the instructions, etc. to make sure I didn't have to unlock something, or hit a different button, remove an air covering or something. But after going back now and digging through other reviews on this product specifically, I sadly realize that this is just the pump.1. WORST & FIRST, this hardly fills air, or fills so slowly that it will not save any time. I couldn't believe how long it took for the pressure gauge to climb just a few PSI. And I was using the regular wall outlet in my garage (tried another one too, just to troubleshoot).2. Potentially even worse (but I'm not going to wait around to witness this happen) the motor just can't handle the work, and I see a very short future. After running for 5 or 10 minutes on my first tire -- and it still not moving much toward my goal of 40 PSI -- it began really smelling and getting hot. After a little more usage on the second tire (see point 4), I actually saw smoke starting to come out. SMOKE!3. Additionally, for all the "not working," this pump is incredibly LOUD (which I suppose I could live with if it actually worked).4. After laboriously getting one tire almost satisfactory enough, I moved to a second tire. After 10-15 mins of running on that second tire (turning it off a couple of times to read the exact PSI, and to give "the little engine that couldn't" a small rest)... I got out my bicycle pump and topped off the other two tires by hand in just a few minutes. Then I unplugged the Kensun from this second tire and finished it by hand in a jiffy.5. Oh yeah, and you can hardly read the PSI gauge while it's running because the pump vibrates SO much, so you have to keep stopping it when you want to read where your at in PSI.... which unfortunately is usually the same place you were before! :(I am SO disappointed in this pump, and in this experience. I'm returning it today, immediately. Do not make the same mistake I did.Meanwhile, looking back at the Amazon page for this pump, it is ridiculous that is says this pump is reduced from $299.99 to just $39.99 (an 87% savings!!). Seriously?? It is not worth $9.99.

The issue with this product is quality. My first unit I received was DOA because it would not work from the car power source at all. I replaced the unit and used it several times to fill my car tires and bike tires. When working properly the unit is great. I liked the functionality of being able to use multiple power sources so I could keep it in my vehicle. It is not very loud and can inflate a car tire in a decent amount of time for a small unit. I was disappointed that within six weeks and only three or four uses the unit completely stopped working from the wall power source. This was after a frustrating time filling when it would short in and out. I was also disappointed to find that Kensun is selling this product for $5 more on Amazon than on their own site. Though I would gladly purchase through Amazon since they have excellent service and support.

I used this pump to inflate seven bicycle tires and two car tires. It was smoking. I gave it several minutes to cool down in between tires and then it smoked some more and then stopped working completely

I am shocked by the reviews on this product. If we had only ordered 1 unit, I wouldn't leave such a negative review. However, we've ordered it twice thinking that we just got a bad one the first time. It takes FOREVER to fill up anything. My daughter got a Wubble Bubble and it would take 1-2 HOURS to fill it up. We usually fill it up for her half way. To fill up a tire from 29 to 34, it takes 30 minutes. Additionally, it is working so hard to emit such a small amount of air that it moves all over the place. We have to hold it while attempting to use it.Update: Kensun contacted me when they saw my review and sent me a replacement (A1001) as well as the 12V to 110V adapter. It could, again, barely blow up a small child's ball from the car. As for the adapter to use it in the house, that was a complete joke. It gave the compressor just enough power to turn the light on. The air didn't work at all. Also, be aware that you're reading reviews for a variety of Kensun products. I still don't know how they have a 4.5 star average based on the multiple products we've tried, but the rating is very inaccurate. The products should all be listed separately so that the ratings are fair.Update 10/18/15: The company continues to contact me to offer free equipment to change my review or remove it. While I appreciate the effort to make us happy with our purchase, I don't appreciate them asking me to delete or change my review. Here are comments in the last 2 e-mails I received from them: "If we have met your needs and our offer resolves the issues with your purchase, we would be ever so appreciative if you would consider removing your review, as I wrote earlier, your ratings are important for us to continue to provide our customers with our services and products, and we do follow and try to resolve any issues our customers may have! " And another from this past week: "How are you ? I understand that you did not like your replacement air compressor but you can choose another model all is this is free all I ask if when you receive it and you are happy then if you could adjust your review ."Kensun: We have gave your product a fair try. The equipment is junk. Our review is just as important as the others. I am not removing or changing my review.Update 11/18/15: Kensun continues to harass us. They sent us another machine and we can't even get the hose to hook up properly to the equipment. When the manager called me, he said "sometimes customers get 2, 3, 4, or even 5 bad machines, but I assure you our equipment is good". Um, ok.KENSUN - I WILL NOT REMOVE MY REVIEW. PLEASE DO NOT CONTACT ME AGAIN. You most recently called me 3 times in one day. I am also letting Amazon know about the continued contact. It's gone way overboard.