What Size Air Compressor Do You Really Need? (Updated 2023)
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- Опубликовано: 30 сен 2024
- What Size Air Compressor Do You Really Need? (Updated 2023)
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This is one of those videos that you don’t realise you need until you need it
So true with the older compressors are bombs
Very much so. I'm here because I'm about to get a compressor for my brad nailer
Yep
Z 😮💨😹🤡
"25% quieter than something, I'm not sure what" lmao excellent
I like this guy lol
If I might add, make sure you drain the air every time you're done with the air compressor for the day.
I was gonna ask this. It seems like it would reduce the stress of the inside of the tank. Makes sense.
@@FatNebraskaMom its for moisture build up
I feel like I need three or four different compressors. Yes, I need on for nailing and filling the tires on the cars and a compressor for such jobs is pretty easy to find. However, I also want to get into spray painting but a lot of folks on RUclips push for the very large and very expensive, such as compressors of 60+ in gallons and 230 V in power. I fret too much as it is, but compressors are about the most difficult of tools that I have ever had to choose from.
It’s not the size of the air compressor, it’s how you use it….I’m told….
How big of a compressor will depend on what you're going to be doing. For spray painting either a 120 gallon single stage or 80 gallon 2 stage will work. There are so many different variables into which one you need
Excellent vid, Bear. I agree with everything you mentioned.
I actually inherited one of those 20 gallon Craftsman compressors years ago, and ended up selling it. It did nothing my 6-gallon wouldn't do. (1 more CFM on the 20 gallon).
And you are SO right about cordless/corded tech making these middle-grade compressors obsolete.
Shine on, Big Bear!!!!
God bless
I bought one of those $50 Harbor Freight hot dog air compressors and it is one of my biggest regrets, not because it doesn't work, it does but it is so DAMN loud.
I had one of those. No more. I got a bigger compressor but missed the easy portability of the small one. Now my little compressor is a 1 gallon "quiet series" from metabo HPT (from lowes). No problem with a normal voice conversation standing beside that thing while it is running. It sounds like a refrigerator. It's my basement air compressor. I use it to blow dust and etc down there, and it is small enough to carry upstairs if needed. Quiet is definitely worth paying for IMO.
DeWalt/Stanley & Decker absorbed a small but mighty air compressor manufacturer named Emglo. Shortly thereafter, the manufacturing was moved to Mexico. DeWalt compressors for a time after that had DeWalt made by Emglo on the tank. More recently, the by Emglo was removed. The original Emglo compressors were well made in the USA, lasted a long time, and made a lot of air with very little horsepower. I'm sure some of the Emglo technology is used today.
I have the dewalt 30 gallon 175 psi oiled motor with the belt drive. It’s kicked ass so far. Runs my impact and my air tools no problem. For a diy guy like me. It’s great. And pretty quiet but I normally have music blasting or the tv on lol.
I have the HF 27-gallon Fortress High-Performance air compressor. I love it. It allows me to use small pneumatic tools, such as a 3" random orbital sander or a 1/4" die grinder. It also has sufficient air in its tank that I can use compressed air to blow sanding dust off of my work between grits without the compressor coming on every time. It's a good size for my small shop.
For a professional shop, a rotary screw compressor is the only way to go? They put out twice the CFM, and at half the decibels? As far as regular reciprocating air compressors go, IR (Ingersoll Rand), Quincy, and Rol-Air are excellent? Keaser is the company I serviced for when I was a shop mechanic? They are the highest quality rotary compressors on the market?
I just got the fortress 26 gallon i upgraded from a husky 8 gallon definitely needed this vid for the push
I have a 20 gallon McGraw. You are absolutely right! I turn it on maybe 4 times a year. It looks pretty though
LMAO, " IT LOOKS PRETTY THOUGH " NICE.
The worst thing I ever did was spaying popcorn ceiling. They don’t require much psi but the cfm is off the charts
get the biggest you can afford or bigger and you can grow into it.
Hey Jeff, Thanks for a compressor update! I've been looking at the new McGraw 29 gallon oil lubed unit and the 30 gallon oil lubed Husky, DeWalt, Craftsman compressors. Those 3 are the same. Made in USA from global components, 6.3 scfm. at 90, 175 psi max all which beat the McGraw (5.3@90) The McGraw is currently $549 (down from $599) but with the usual HF 90 day warranty. Figure $150 more for the 2 year replacement plan. As Jeff mentioned, the Craftsman is currently on sale for $599 from Lowes. The Dewalt can be had from Tractor supply for $599. Both of those will cost at least $79 for delivery and carry a 2 year warranty but only a year on the pump and motor(read the fine print). The Husky from Home Depot carries a full 2 year warranty on everything and can be delivered free. Also, the Husky can be returned to any HD store for warranty. DeWalt and Craftsman have to go back to an Authorized repair center. The Husky is currently $699 but with free delivery and a better warranty its a no brainer for me. I'll wait for a sale and use the $50 new credit card deal HD offers.
You'd take that Husky over the DeWalt ultra quiet 26 gal (2.0 HP, 4.0 CFM & 90 PSI) ?
Some advice from an actual air compressor mechanic, the oil-free air compressors are disposable, if your not concerned about long term reliability? CFM is everything and PSI, is not? Anything over 120 PSI is a bonus, but not necessary, since all air tools are only rated at 90PSI? The receiver(tank) is the second most important factor in determining it's usefulness? If you are going to be running air nailers, a pancake portable compressor will suffice? Die grinders and air drills will use a very high CFM, like over 20 CFM while operating, so your little couple gallon tank, will not work, even with the pump constantly running? A size of 30 gallons min. and a 5+ CFM rating at 90 PSI or more would be recommended?
I worked at one of the biggest air compressor manufacturers in the world, you where spot on with the CFM and quality of the smaller units, get a bigger unit or go cordless, the law of physics says you can get 4 CFM per HP. Or less depending on design, always look at CFM, and HP, anything approaching 2 HP or above will be 240V.
I have the McGaw 21gal that I bought 3yrs ago. I use it for nail guns and spraying finish on woodworking projects. Its been a great compressor.
Good show with lots of useful information. He's right about the 20 gal. I got a Craftsman years ago and still have it but for what I do it was way over kill. I'm looking to get a small one because this one is so old and tank concerns me. I like my limbs, they come in handy
I really wish the worm/screw drive compressors caught up to reasonable consumer prices. Those are legit whisper quiet! But with battery tech getting so advanced, I'm not sure we'll see that happen sadly.
A buddy of mine uses a HF little pancake air compressor as a pond aerator. Burns out like once every 2 years, so he takes it in and gets it replaced under the warranty. Think hes on like his 4th compressor for this.
some instances, you need volume for air, but for most people nope.. if you need added volume you can always add in a extra storage tank. and once you go really big your into rotary screw compressors. As for shop air lines, PEX seems like the a good solution for running shop air lines If you staying under 150psi. It doesn't shatter, cheap and somewhat flexible.
The Makita MAC5200 is a 5.2 gallon compressor rated at 6.5 CFM. It will keep up with the 25-30 gallon compressors you showed, while being cheaper and more portable.
I largely went without air compressors until I started sand blasting. Then, I got a big boy compressor… Harbor Freight’s Central Pneumatic 5hp 17cfm. I slapped it on an old air tank with a Merlin air filter and for $300 I have a highly competitive air compressor.
Agree 100% on the desirability of the 5 CFM @ 90 PSI 27 gallon unit (although that is still not quite enough for my paint sprayer) except... ...I can't afford one. So I bought a 3 CFM @ 90 PSI 20 gallon, plus a 10 gallon auxiliary tank, and still came in under under the cost of the better compressor. While I would never recommend this rig for commercial work, for my home shop it is adequate; I only have to resign myself to a less than 50% duty cycle. Work the tool for three minutes, inspect the work for a bit while the pressure comes up, repeat. The key is that the auxiliary tank comes after the pressure control valve.
Too true about the used compressors. I bought a shop from a gentleman in his 80's who threw in the compressor because it was piped into the rest of the building. I swear I got about 2 gallons of water out of that thing and then it crapped out right when I needed it for a big job. Just ordered a new 7.5 horse 80 gallon.
I actually have 3 compressors and just gave a 4th one to a friend. The one I gave away is the old Central Pneumatic pancake unit that I did a "plumbing project" on in order to run my air brushes while still being able to inflate tires if needed. A friend borrowed that one because he was having an estate auction and needed to inflate a bunch of tires on his dads old vehicles. I replaced it with the Fortress super quiet unit and transfered my project to it. For inflating tires and other lower CFM work, I've had a CP 10 gallon oil compressor for years. The 3rd compressor, which I bought about a month ago, is a Quincy 80 gallon, 2 stage vertical unit. Once I get the shop plumbed, it'll be my pride and joy. It replaced a CP 29 gallon oil compressor that would do most of what I asked but, struggled to keep up with a few air tools that I use often.
Iam a middle mechanic I do air gun , grinders,but paint and sanding iam not sure which one if the 27 fortress
The answer used to be as big as you have room for and can afford.
Now with the advent of decent battery operated tools maybe not as much.
The 2 gallon Fortress is really the sweet spot for home DIY. Runs dusting, tire inflation, Brad nails, and even a framing nailer for home use. Super quiet and light. If you need a impact wrench or polisher go cordless.
I'd argue most folks only need a 2 gallon ish pancake or hotdog for nailers...the rest can be battery powered. Only paint would drive me to get a large expensive compressor.
I totally agree. I have a 20 gallon craftsman that I am getting rid of. It is crazy loud. I'm switching to electric tools and one of the little 3 gallon harbor freight ones for filling tires and blowing dust off.
Has anyone else realized that for most of these air tools, you need far more cfm than any of the of the small tanks offer? When I start painting cars I will need a massive tank just for the paint gun. Its ridiculous.
Yep. It’s why I pretty much don’t recommend anything between six and mid 20s as far as tank size. The smaller ones can air up tires, Wen, nailers and stuff like that but for any other air tools, you need something with around 25 gallons usually
@@denoftools thats a bit ridiculous for painting. I have an electric paint gun but I surely will test it thoroughly before using it for my car. Like you said, nee tech is making these old standbys obsolete. Have you any experience with the electric sprayers?
I have Crafstman pro 25 gal it produces 10.4 CFM , 8.6 at 40 psi and 6.8 at 90psi it still works great and i took care of it but its 22 years old and I'm afraid to use it cuz of the tank age. There is nothing on the market now a days that can replace this compressor that gives air flow like mine with 110 volts. I can't really get a 60 gal i would buy it but they are all 230 volt rated my garage doesn't have the outlet :(. Also the compressor is 6 Hp now the most Hp on a 25/30 gallon is 2 .
I have an old 13 gal 125PSI that does 5.8 SCFM@90 PSI, could I comfortably run tools on it?
AWESOME INFO. 😊
Great video, I was going to get the fortress 27 gallon and now I definitely am. At 12 years old my first compressor was a pvc vessel with a ball valve for a trigger and a shrader tire stem. Using a bike pump I would charge that baby up and shoot weighted darts across the house and dent the drywall. It's a good thing that never blew up in my hands... good times
Thanks for a super informative video. If possible, I have 2 questions for you: I will be setting up a DIY garage with a sandblaster cabinet and some air tools...DA sander, paint gun. I have an older PUMA 5 hp 15.7 cfm 115 psi compressor. Will it do the job? If not, what would be a suggested replacement unit? Thanks in advance! Take care.
Hey man, thanks for the info! Please tell me this - assuming that a 7 gal. 100 psi portable air tank will inflate a flat 16" tire to 40psi (will it?), what size compressor is needed to fill that air tank to 100psi?
I like taking a portable tank on the road just in case. Thank you!
I have had that Quincy 2 stage 60 gallon for 7 years. It was a lot cheaper in 2016
I’m using a paint shaker with a stealth 12 gallon quiet air compressor and it seems to run it great but if I’m mixing all day the shaker will act like it’s struggling to move. I’m not sure if the air compressor is getting too hot or what it is. The top of the tank is pretty hot and I have tried a few different shakers with the same issue. Do you think my compressor is struggling?
Even though I am looking at this 2023 video in 2024, it was extremely helpful, put things in great perspective, and you are a wonderfully personable and believable presenter. I am now much more confident what I need to look at for my uses.
Painting, sandblasting, and certain air tools will eat a lot of air. If you're a hobbyist, or weekend-warrior, my advice is to go buy two 20-30 gallon compressors and hook them up in tandem. There are a lot of reasons why this is the way to go for the DIY/hobbyist person. 1) A large pro compressor will be EXPENSIVE. 2) A large compressor will require 220v at a minimum and more likely 3-phase. Most residential garages are not wired for 3-phase. 3) A large compressor can't be handled by one person. You'll need help to install a large compressor. 4) Firing up a large compressor to fill tires or run an impact is wasteful. There are lots of advantages for the hobbyist in purchasing 2 or more 20-30 gal compressors. Smaller compressors can be run off a 110v/20amp line, standard stuff in most garages. My garage has four 20amp/110 lines, I could run a smaller compress on each line simultaneously. 2) On sale 20-30 gal compressors can be quite cheap. 3) 20-30 gal compressors can be handled easily by one person. 4) With judicious use of valves in the air lines, you can fire up only a single compressor if all you need to do is fill tires or run small air tools. If you're a hobbyist buy a couple of smaller compressor and hook them up in tandem. Leave the big boys for the pros.
What brand did you use for each compressor?
@@pedrog5846 I used HF. Before you buy any compressors, check out the tutorials on RUclips and online. Do a search for 'Tandem compressor'. Consider what it is that you want to do, and then select your compressors accordingly. You can also hook up extra air tanks in the system to extend run times.
I totally disagree with your opinion on "used" compressors. You say the new ones have come "down" in price. NOT!!! That 60 gal. for $2,000 could have been purchased for under $600 a couple of years ago. Used ones in relatively good condition are running $2 to $500. The market for used compressors is full of "slightly used" upright compressors with the 30 gal. tank and 1.6 hp and 5-6 cfpm@ 90 psi. They are for sale because they are too small for even DIY's. The upright design is suppose to be portable (has wheels) but mine weighs over #200 and with the center of gravity so high you can only roll it on a hard perfectly smooth surface. RUclips is full of videos on "reducing the sound" on these particular design. The water drain is in the center of the bottom of the tank and so close to the ground that it is near impossible to get your hand and arm under there. If you tip it up to get under there, the water in the tank runs away from the bleeder. The part of the bleeder valve that you have to turn is so small in diameter that it is hard to get a good grip on. The motors are made in China and do NOT have a horse power rating. One company is building these compressors with licenses to put many names on them including popular compressor names. The problem is "BIG Corporation" are buying up all the name brand tools such as Craftsman and Dewalt and out sourcing the production to companies that are cut quality to make more money. In my 80+ years I have never seen an industry so turned upside down. Rating compressors by "hp" wasn't a real good system but this new "cfm @ x0psi" is usless as utters on a boar pig.
Prices of air compressors have come down??? a 60 gallon Sanborn at Home Depot used to be on sale for $400 pre-Covid, now they run like $900. Prices have more than doubled since 2020.
So I have stumbled across a Walmart clearance of the 20 gal. TAW2080vd for only $124. In a home DIYer. HVLP painting of small project is the most CFM I’ll ever do.
So is that price a good deal?
youll find magic in 1/2 fittings an hoses... friconal losses are no joke!
Thanks for information but am still cloudy on what particlur air compressor will work for me. Dummy terms explain 150-175 PSI/ 5 CFM. The tire changers regulator will be set at 140 PSI. this is what I need out of the air compressor. Gas perfer but electric if needed. So wha compressor wll work for me?
Hey bear. I have an air inpact wrench i plan on using when doing mechanic work from time to time. I have it abd a ratchet i bought a set off Amazon thinking a pancake compressor would run it. What size do i need to get. I'll only be using it sparingly. Thank you! I was looking at used ones on marketplace until I watch this video. Thank you!
The biggest factor is the average air consumption of the tools you need.
And how much you whine about noise.
You can take a 30gal tank and an oversized motor to run just about anything that's not a commercial spray booth but it's not going to sound like a owl flapping it's wings.
For those in UK/Europe check out Einhell's compressors
36v portable 6Litre
And their oil-free silent 24Litre looks amazing
thanks for the content. I'm opening a one bay small shop to repair vehicles, just using impact to loosen lug nuts and stuff, and wrenches also with air hammer to tackle stubborn things not coming off. It's only me, using one tool at a time, not all day long at all. Ultimate question: is 30 gallon enough for me? or I need bigger? Thanks
I need more honesty and candor than those that stuff their pockets with promos
Anyhoo, I live in a Senior Citizens Commune, some have poor hearing but are keen on seeing, where as if both eyes and hearing, agnostic be Snafus the Maintenance crews either be jealous or be snitches.
My basic needs is to simple tasks! Tire inflation, blowing out motors, balloons, or hair drying even pushing the stagnate air I breathe! Ok just open up the windows & doors!?
I had a small portable Craftsman or Coleman 2palm size compressor that is now unique hard to find goodie and oldie past to good for modern times!
Paid 5 bones.
Help me to get me by for not earning s wage but just common sense when need to blow away dust off motors, fans bed bugs or uninvited critters ads well unfriendly door knockers!
I'm a tight penny collector.
Thanks
SiRicahard Smith
When budget will allow, I’d like to upgrade my 40 year old 2hp 20 gal Craftsman to an Eastwood Scroll Compressor. Scroll compressors are supposed to be super quiet and 109% duty cycle or there about with great CFM. Is like to see you do a video on them. The Eastwood one goes on sale for about $2,000 so would be in the range if your higher end.
I have a 8 gal Emglo from the late 90s and it still runs flawless for me 25+ years later.
I have a Craftsman 25 gallon 5.5 hp
that I have been using for 25 years also.
I have an RV with 110 PSI cold rated tires and have been looking for an air compressor that will air them up without struggling. Recommendations?
I got that Craftsman today for $419.37 at Lowe's. Christmas in Aug.
What is the smallest air compressor I can use for an air chisel/hammer? I don't have much space in my one car garage for a big one, and also I don't want to a lot of money on air compressor that I won't use more than a few times a year. Thank you!
Think he might be wrong about one thing, as long as your air compressor hasnt turned on while u are using say....an impact, the tool should still be running at full power. So for a home user cfm isnt as much of an issue for something like an impact. A grinder or something running non stop is a different animal however
Damnit, boy, I just got that craftsman 175 psi for 150. Clearance. YEEHAW
Hey Bear,
If I’m just doing an occasional wheels off the truck for maintenance every 3months, do I need an 11gallon tank stated on your chart?
What would be a good size for blowing out pool lines and a sprinkler system?
Would you recommend the 27gal compressor to run an air impact? Impact paperwork says it needs at least 4cfm but I’m curious on it actually running lol
This is one of the most useful videos I've seen in the past several years.
Man this guy is informative but entertaining. Thanks my friend #mosthurdword #what lol
Mobile auto recon tech here. Looking for something to fit in my trainees Tacoma to run paint guns and dye grinders. Do you have any opinions on the metabo tank 8gal?
Hi, can anyone tell me, what size of air compressor do i needed for Tire changing machine, fyi machine operating psi is 140 psi.
Love my 7 gallon California Air.
I got the 200 psi fortress and love it. Unless i was running a DA for a while or painting for a living it should do me fine..that being said i would love the eastwood rotary plus its super quiet
I bought the 60 gallon dewalt from tractor supply a few years ago on a great sale. I think it was 600 bucks. Been great.
That was really interesting about the 10-20 gallon compressors. I ended up with cordless because like you said they evolved. I like this video.
Cordless or even corded tools have come so far. If all you just need to fill your tires or blow off something with air, you don’t need anything big. Good vid. Thanks.
Thank you for telling me what I need and what I don’t coming for a person who just wants to inflate stuff. Thank you
Video about manifolding a few budget compressors together :P
I am acually looking for a compressor that is quiet and can operate a cylinder for a piston………i am making a sci fi door for my trailer conversion
I had a Craftsman 30gal for 20 years. 30 Gal is too big to be portable, too small to run rotary tools.
I enjoy this channel. I always learn something new and the presentation is wonderful.
Thanks! 👍
I have that Quincy and it is awesome. If you have an auto shop this is what you need. the others will not last.
Glad you were honest in comparing air usage to corded/batt tools.
I've worked in many shops and all you pvc for air lines😂😂
You look better in the bear suit
Air is measured in cubic feet, not gallons.
What bout California air tools compressor
I seen a nearly new 60 gal 11 scfm at 300 money
THANK YOU SO MUCH. I AGREE WITH YOU 100%.
Did I miss the part where you describe the difference between single and two-stage air pumps? What's your recommendation for a good air compressor for use with a sandblaster?
Two stage is always a better choice if you can afford it. Quieter, more efficient, lasts longer and produces less heat. As to the sandblaster it all depends on the requirements of the unit you are using, how often you use it, and the duty cycle you need from it.
No fight here, but a question: The Harbor Freight guide only started at 3-gallon, but they sell 1-gal and 2-gal ultra-quiet compressors. What is the use case for those and are they recommended?
I have the Fortress 2gal Ultra Quiet in my basement shop. I runs all my nail guns without issue. I even hauled it up to the second floor when I installed new baseboard and shoe (about 600' worth). Rarely ran when using my 18ga brad nailer. It is extremely quiet. They are useless for blowguns, or inflating large tires. Bicycle tire, maybe. 37" BFG's on your Jeep: No way (unless you've got time to sit around).
@@hackfabrication139 And for brad nails, you could consider battery operated these days. A bit bulky, but not as bulky as a hose and a compressor!
I like my metabo hpt one gallon quiet compressor for blowing dust out of the computer, topping off the well pressure tank (slowly), bike tires, balls, and yes, a brad nailer and staplers because I've had those air tools for 20 years.
What is good for a tire mounting machine?
GREAT!! I am running a heat press for t shirts. Had a craftsman 20 gallon for 10 years just died. Can you recommend anything ? I have a small 8 gallon but it is constantly going on and off. Normal psi we use is 70-80. Thanks in advance. USES about 2.5 cfm
How do you determine 300 liter per min compressor
I like the idea of a quiet air compressor, but I wear hearing protection 100% of the time while using one. That started the time I was installing trim in a small closet and accidentally bumped the pressure relief valve on my quiet compressor. It immediately dumped all the air in the tank, and because of the enclosed space it was extremely loud. My ears were ringing for days after that. I re-created the event with a decibel meter nearby, and I think it hit 115dB.
I like the idea of a quiet air compressor, but I wear hearing protection 100% of the time while using one. That started the time I was installing trim in a small closet and accidentally bumped the pressure relief valve on my quiet compressor. It immediately dumped all the air in the tank, and because of the enclosed space it was extremely loud. My ears were ringing for days after that. I re-created the event with a decibel meter nearby, and I think it hit 115dB.
Begins with B and sounds like omb .
Schedule 40 PVC works fine for air lines, but don't use the cheap rated PVC or you'll likely be sorry! Thanks for the video!
What about use case of blowing out sprinkler systems (plus other general nailer use)? What CFM and size gallon do I need since that is constant use @55 psi for 5 min per sprinkler zone? I had been using a 13 gallon Campbell Hauser hot dog unit with 6.5 SCFM that died. Not sure how big of a one I really need
Thanks for this. Do you answer queries. I want to sandblast the paint of the architraves windows etc inside the house. I brought a lematec A1109. It recycles the media. I don't anything at all about air compressors. I'm an older woman who just wants to get the horrible layers of paint off. I went to total tools, in Australia. We have different products to you guys. He wouldn't sell me one until I knew exactly what would be best for the job. It was mostly about air holding capacity and air per minute he said. Lematec aren't really big on information. One video said at least 1.5 - 2 gallos air holding capacity and minimum 2.5 horse power. A different video said at least 150psi. I still don't know what to buy. Any suggestions would be greatly appreciated
I have a Porter Cable 120v twin cyl 20 gallon tank, it seems to just loaf at building pressure, slow rpms, can i drop the motor pulley size to speed the compressor up a bit ? pulley looks to be about 3.5- 4 "
Thank you sir, much appreciated video. Just came across your video, because I'm in the market for an air compressor to run a few pneumatic powered Halloween animatronics. 🎃
Thanks for the tips.
I've been trying to figure something out and am just completely lost, if anyone has a suggestion. I want to get in to spray painting a bumper or fender here and there, nothing major. I currently have a California Air Tool compressor, 4620AC, that's only 4.6 gallons but it has a higher cfm than some of the larger compressors: 6.4 @ 40 PSI and 5.3 @ 90. If I get one of the larger Fortress compressors at Harbor Freight, I will have more air but less cfm and that's where I don't know what to do. My other thought was just get an expansion tank? Super confused if anyone has insight. Thanks. Great video as always, Bear.
You should have mentioned that all consumer compressors lie about cfm. They calculate the intake cfm at a given pressure. I was running out of air and burning up compressors. I bought several that according to the label had more than enough cfm to run my 105 amp cnc plasma cutter. I talked to the manufacturer and they explained how homeowner grade compressors test to get the # and why a commercial unit with the same labeled cfm can easily keep up and costs more because you need a bigger motor when you tell the truth. They pointed me to a video on RUclips from a channel called AVE showing a test that visualized it in an easy-to-understand way. Since upgrading my motor to a 7.5 hp with 2x the rpm my Kobalt homeowner unit is doing the job. I don't expect the pump to last too long at double the speed. When it brakes I plan to get an e max with a continuous run setting to protect the motor and pump when painting or using the plasma cutter for more than 20 minutes. Even a commercial compressor is not ideal when it turns on and off frequently because.
Start stop boltages of the motor and not having time to cool off. Running continuous with no load in between cycles apparently costs less electricity on top of cooling the pump and motor. I hate homeowner tool manufacturers because they lie about too many things. Shop vacs are the same way now too! I have a 25 year old Craftsman. 1.5 horsepower shot back. That is more powerful than a brand new 9hp unit because they play the same games of testing in some convoluted way that is not representative of the way the tool is used or how common sense would dictate. They don't want ppl to be able to compare products with #s on the box Or in the case of flashlights 100% lie about the brightness like 99.9 % of lights in stores or on Amazon/ eBay
Those are all nice little toys.