ฝัง
- เผยแพร่เมื่อ 7 ก.พ. 2025
- Thanks to Pep Boys for sponsoring this episode! #pepbros4life
www.pepboys.com/
/ donutmedia
Air Conditioning is the unsung automotive hero on a hot day… sometimes it’s great to feel the wind in your hair, but sometimes you need that blast of COLD AC! We talk about compressors and evaporators and all the great stuff under the hood that helps you stay cool. Heck, we even recharge a system to get that cool cool air on our face.
Bart teaches us how cars work buy blowing stuff up and cutting things in half. It’s a science show for the car lover who’s easily bored. Join Bart as he explains the science behind everything automotive. This is cars down to the atom. This is Science Garage.
Some of our best videos ever are coming out soon, stay tuned so you won't miss a thing!
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There is no way drugs were not involved in the making of this video
Art right🙆🏿♂️
Who needs drugs when you have Freon.
Huff, huff pass...
I don't think they huffed anything prior to filming, but they probably vaporized a good amount of *ICE* in a glass "expansion tube".
Anodyne Melody that’s probably the most subtle reference to smoking crack I’ve ever heard, good job. 😂😂
I miss Bart. He was a good teacher😞😭
What happened?
@@recreationalstudios he died.
@@HeartTribe no he didn’t. he got let go because he had a kid and he couldn’t keep up with how much they wanted to upload
@@tornado_dude2039 lol! I know. I was just messing around lol
@@HeartTribe real funneh
*Chooses to talk about A/C just before the winter season begins*
Well they're in Cali and winter obviously isn't a thing there👀
You do have a valid point here...🤔
You obviously do not live in California.
I run the AC when it's cold outside. The compressor puts load on the engine, increasing engine warmup speed. The AC system also dries the air, so the windshield won't get foggy.
Speak for yourself, where I live in Australia we had a 42C day, that's about 107F.
I miss science garage
Like if you want science garage back
i want it so bad, miss this hilarious guy Bart!!
The way that B2B has been running in quarantine, it might as well be science garage with Jerimiah.
@Nathan Jackson what happened to him?
@@sheldongenis8512 he had a kid, then went on paternity leave. Somewhere in there he left Donut media
Bring Bart Back!!!
"When I am under pressure, I like to listen to that famous Queen song, Bohemian Rhapsody." hahahahahaha
Yea that made me uncomfortable
I don't get it??
@@solarvtol7358 queen has a song called under pressure, so he made a misled implication
I Read that exactly simultan to His words
@@epaminontas6972 Why would it make anyone uncomfortable? It's just a funny joke.
> "Over half of the cars had A/C in 1969"
> Nice
Reddit user ova here
Nice
@@elyasrasti8943 More likely 4chan
Nice
“Just like a parents love for a child refrigerant doesn’t last forever”
GotGoldGT which is a lie, in a sealed system you should never have to add refrigerant. The stuff takes 100 years to break down in the atmosphere.
Funny, because Bart is expecting a child (or probably already born at the time of making this vid) lol
👍
it needs to be fixed and maintained in the same way too
@@buckeyebanshee the fluid wears out...
“Well you know what they say about assuming, usually it turns out you’re right” well said sir!
This video is waaaaaaaaay too calm and quiet
Before we get shout at loudly with pumphrey tomorrow
Well he is explaining AC (something that is cool)
If you wanna more loud. Asked him to explain exhaust pipe or stereo
I know he didn't have his usual hyperactive delivery style.. Next time!
Or maybe the AC just worked so well ot slowed him down
this episode was cooler
The Daisy Dukes are giving him a draft. He’s mentally trying to figure out what’s going on while taking, so he’s not focused.
I miss yelling Bart. But, happy Bart is still in my life.
I miss Bart in general 🥺
@@joshkirkby8103 yeah what happened to him I’m pretty sure this was his last vid
Ur a child …
@@chief8886he took went on paternity leave but then decided to leave for good. Not sure why but he seems to be okay
What in the man daisy dukes just happened.
Lmao
Discada, Cooking Disc and Outdoor Cooking
THECOOKINGTRUNK.COM
As always, this was a great episode, but I think that was the highlight, lol
GETUP AND GO can’t argue with that sentiment at all. 😂
Did you see the outro?
"Man, all this talk about pressure reminds me of my favorite Queen song that I like to listen to when I'm Under Pressure, Bohemian Rhapsody"
you're so informative, funny and cringe at the same time 😂
you probably make a great uncle
He's gonna be a dad soon!
@@robertlanders6536 that poor child
@@killingtime4444 i am sure his child will have a great time
"in 1939, the same year ww2 was invented" lol
"when WWII was invented"....HA!
Universal Paradox Thanks Germany?? Lol
@@stevencolley9924 thanks PolandXD
He's not wrong
I love this guy talking about cars so much. He has just the right kind of humor I love.
You make learning fun and hilarious. Never change, Bart!
He's literally changed in this video
Any idea why their aren’t any more Science Garage episode? Did he left Donut?
hi donut media.. BRING BACK THIS GUY!!!!!
Today my physics lesson the dude was teaching ac, home use ac, but pretty much the same shit. And that dude was talking trashly and made us all confused. And while I was about to search a vid to see how it works, there came Donuts. I love you guys.
Brian.K fuck your dp
Donut Media. Helping us pass our classes since 2018
Honestly physics is such a fun class. Absolutely loved when we got into electricity and magnetism. Rather learn about that stuff over a boring English class any day.
How weird my physics teacher also talked about ac today
Dylan - exactly. Yet my physics teacher is pretty much rubbish and sometimes make things so confusing that they aint fun anymore🤦🏿♂️ so many of us go to have some tutorial classes or just self study by visiting donut media😇
Who else watchin this in 2024 cause you miss when donut was this fun?
As an AC guy, This video was fantastic and actually very informative on our home system works as well
@@kingtalaha he's an AC system, duh
as an Alternating Current guy ?
This guy needs to come back, these videos are so informative and funny. Might be even better than James. :D
James is the head writer so he is kinda reading James script but yeah where this guy at?
my neighbor would add refrigerant to his car every month. we told him he has a leak but he insisted it was burning it instead of leaking it... he was crazy dumb. he could had fixed it properly with the money he spends on the monthly refrigerant top offs
There's one thing AC can't do but quarter glass can.. And that's blow air at your crotch.
Has his compressor seized already? Unless you replenish the oil too any compressor will die very quickly when treated that way
Legends say that this was the last science garage episode on Donut media ever.
This episode ia so calm.
That's unusual , and strange
Because it's a cool video...
@@CarlosGarcia-ze6rt i saw what you done there hahaa...maybe a month later but i got u
This is like that cool Professor that you can’t even hate on his class because it’s just fun and educational at the same time and although you don’t want to give in you kinda have to but it’s not that you don’t want to cus you really want to and you end up liking his class cus he’s just cool like that! 🙂
I need therapy to get that image from the intro out of my mind 😭😂😂😂😂😂
Let us thank the new founding fathers for that purge😇
letlhogonolo sithole hebana😂😂. Hola bozza😂. It’s a Mzansi party over here moes
Ayeye!!!! Let us invade donut media like the eff invaded our government 😌
letlhogonolo sithole Honorable member withdraw your statement 😂😂😂😂😂
If your A/C is low it is because there is a leak. Refrigerant doesn't just disappear thats why it takes 7 years for it to dissipation in the atmosphere. Also that bottle you bought at pep boys doesn't contain any refrigerant at all. You need a licence to purchase refrigerant. That bottle will make your ac blow cold temporarily, but it can also damage your A/C system since the oil in the system is carried by the refrigerant, and when there is none the compressor will get very unhappy. Many shops will use a gas analyzer to identify the bull shit from that can in the system and then tell you to go to another shop because connecting their A/C machine will contaminate it.
I have to disagree on your point about needing a license. You can go into Walmart and buy a can of R134a (automobile and appliance refrigerant) all day long. No license required. You do, however, need an EPA card to purchase refrigerants such as R22, R410, R404 ...etc.
@@davidb7180 As far as I know as of 2018 you need a licence to get anymore than 2 lbs of r134a in the US. Most other countries care a little more about the environment and have very strict guidelines on all sales of refrigerants, and repair of A/C systems.
YUP
License required here in Canada
I was shocked when he recommended topping it up..the shit doesn’t go bad unless you have a problem I.e refrigerant leak. Promoting hack repair jobs. Do it right
NOTHING’S WORSE THAN HUMID HEAT.
Change my mind.
Sitting down too fast and smashing your balls. That's pretty bad, eh?
Fridgid cold
David Pinkston humid heat while you’re in a pig farm
Hilary Clinton
@@GustavCarl17 did you just assume gender in 2018?
The 95 dislikes were from Anti-Vax Moms
Or from people who saw those shorts
576 now
Bart was very *chill* in this episode.
I miss this guy. He was hilarious!!
Did he leave the group?
@@ibohasan8823 I think so...
I laughed way to hard when he just said "nice" after saying 1969
That Queen joke was freaking awesome!!!!
A/C is quite a boring topic, but you guys make it interesting and entertaining, sorta like me at a funeral. So eDuCaTiOnAL
Im training in Stars for ford as a dealer tech. I've gone over the e learning stuff and got a little hands on just before the most wonderful shop foreman left for a other job changing the world engineering self driving semi trucks... any way since he left learning has been very difficult. I've been misunderstanding hvac, feeling like I was missing some key piec of information to put it all together. Thank you so much for this! I can further my career, diagnose and repair my wife's ac all thanks to Bart and the donut team.
It would have been useful to mention that Evaporators are installed inside the dashboard and in 99% of cars you have to remove the dash to replace it (Or even reach for it). Great Video!
Well, in my case it's just a matter of removing a handful of bolts, and then you can pull the evaporator box from under the footwell. I could do the whole job blindfolded (except for the refrigerant recovery).
Bart's vids are still amazing! such a good teacher, and hilarious!
Okay who hurt him. Who has caused him to go quiet all of a sudden
Puberty
I believe he took part in the goofy green
3:45 "europeans dont know 32 is the tempeature at which water freeze"
*WELL GUESS WHAT Fahrenheit WAS A EUROPEAN*
Yea we almost hung him for that
@@derrickstorm6976 we should have
@@derrickstorm6976 we should have
@@sixunity1171 we should have
Thank you Bart, very *cool* !
Donut media is really a mechanic school for me😂. Everytime I want to know about car this channel have everything about it.
Can you guys please so a video on DRS, ERS, KERS etc?
I would love to see how you guys explain it!
There better be a KRS ONE reference in this video.
Go check "Chain Bear" channel. Thank me later.
Pepega
3:11 Bohemian Rhapsody, damn your face knowing you dissappoint everyone, 😂😂😂😂😂😂😂😂
From what I learned in auto school, A/C does not run out, it does not "go low eventually" and it should not ever need to be serviced unless something breaks, also no foreign materials should ever make it's way inside the system. If it's not blowing cold air, take it in for repairs, something is wrong. Mind you, I had a 1993 Ford Escort with A/C (surprisingly) and it blew awesome cold air using the old R34 refrigerant all the way up until I had to put a new engine in the car in 2010. I'm quite sure the A/C has never been serviced in that car before that, everything looked original. So no, don't bother buying a recharge kit, waste of money, you have a leak that needs to be addressed.
The molecules in R134 are small enough to leak through the rubber hoses, so yes it can go low. Plus, the compressor shaft seal can wear and leak freon.
Those "self service" AC pro kits suck because they usually contain a stop leak fluid in them, which is a pain to get out of condensers when your mechanic actually goes to fix it.
@Elon Blunt Went to school less than 10 years ago, still modern cars buddy. Mind telling me WHAT you had serviced on your car at 75,000 miles? What'd they do?
@@dangerrangerlstc I really find it hard to believe the modern car is engineered with rubber that's incapable of containing molecules in R134 or whatever fluid/gas they're designed to contain for that matter. Mind you, rubber can be formed and treated to withstand a variety of different substances under a variety of different pressures. And yeah, a leaky seal would be a reason to have it serviced, a reason it's a leaking, a reason that a recharge kit ain't gonna fix. In fact if the kit has this stop leak you're talking about, that's only gonna make matters worse later like you said.
Only way you ever need to add any is if you have a leak
@Elon Blunt A perfect system never needs to be recharged, household and commercial systems will run the same refrigerants for 30+ years easily. That being said, cars use hoses with fittings that tend to leak eventually due to movement/flexing. As long as the pressure within the lines are higher than atmospheric (14.7 PSI) little to no contaminants should enter the system, so this is where you can "top up the freon". If the entire system loses its charge then it has to be properly fixed, or you're just going to likely end up hurting the compressor making your repair bill even more because air [that is saturated with water], cannot be compressed! Basically automakers suggest getting this looked at during scheduled services because there is a fair chance that a fitting somewhere has/is leaking. Source: I'm an HVAC/R tech.
I love Bart’s humor! The same comments people leave are the same comments tell me in person.
AC is a luxury item to most people with old cars.
I yank them all out, race car all the time.
Hands down the best video on how AC systems work.
I thout AC meant ass compressor . Smarter every day
Mace close, I thought it meant ass condenser.
No no no, you guys are both wrong, "AC" stands for Arse Conflagration. Here's how it should be used in a sentence: "I went to a hot dog eating contest and slathered the meat-tube in scotch bonnet peppers, after the contest I had an AC in the porta-potty"
Anodyne Melody I think your definition is wrong. If I’m not mistaken I believe AC stands for “Anal Contortion”
@@trentpatrick4727 My definition stands but is the British English definition of the acronym "AC", but in American English it's "Anal Contortion", so according to the Oxford Dictionary and the Merriam-Webster Dictionary of American English, we're both correct. ;)
Anodyne Melody ahh that makes more sense. If you’ll excuse me I’m in the process of an AC as I’m writing this comment.
Bart is by far my fav Donut dude. Perfect combination of drugs, jokes, and science. Bravo!
Petition for Bart to wear Daisy Dukes in more videos.
I sign
I sign
I motion that all the boys wear Daisy Dukes. All In favor say 69
69
My eyes...
BRING BACK SCIENCE GARAGE
*Please... Never... Wear... Those... Shorts... Again...*
*HERICY*
At least some of us made it alive back there
*Please do wear them!*
SEXY
SDSBBQ nah it’s sexy
Lol, as a student at tech school, watching your videos make it more interesting to learn everything, so thanks!
i wouldn't have watched the whole thing if it wasnt for this dude, he makes it so much better
I miss this man. Please being him back.
"32 is the temperature that water freezes... In America!" Hahaha.
Contrary to popular belief, refrigerant doesn’t get “used up” it just leaks. Ac systems are supposed to be sealed systems and sometimes they leak from wear.
No air conditioner....because race car!!!
Syed Ibrahim or do what Dodge did with the demon and make the a/c exclusively for the motor to pump cool air into it lol
Go check out 1000 HP Honda van WITH AC! th-cam.com/video/u0l6QMEiOdE/w-d-xo.html
Sit your ass down..
@@DeaDPooL-XforceX Still robs potency of the car. But priorities, right?
Syed Ibrahim or because vent windows
@@DeaDPooL-XforceX th-cam.com/video/pOqg_YoDiOs/w-d-xo.html now we're talking.
We want Bart back
Water freezes at 32 in America?
Kowalski, analysis
In school for Automotive tech and this honestly helps alot
Hey Bart. Can you please do a video about Resonators?
"We're going to let it discharge......(eeewwww)"
That's exactly why I love this channel
Dang. I had to get certified by ASE and MACS to service auto a/c. Btw, "A/c Pro" has a chemical sealant in it which ruins most o- rings in the system as well as the $5k industrial machines that are used for service. Don't use it ⚠️⚠️
I totally cringed too. No professional mechanic will use that crap. Horrible advice to add Freon if your AC is warm and see what happens. Fun video for the layman, but a few inaccuracies.
Yo this guy and these science videos are perfect! I'm studying for mechanical engineer and he helps understand well.
His legs woke up my inner gay
Looolll
I miss this guy! Bring him back!
Spicy air
Couple small corrections,
-Nowadays car A/C systems use HFCs (HFC-134a) rather than HCFCs (which you normally find in old central/window A/C units, I.E. HCFC-22). HFCs are soon to be phased out in favor of HFOs in car A/C.
-The condenser is in front of the radiator, not behind it. So DIY guys, don't unbolt the thing in the front when trying to change engine coolant.
-Car A/C systems do over time leak a small amount of refrigerant over time, but it normally isn't enough to lessen effectiveness in the system. If a significant amount of refrigerant is lost in a short amount of time, then you have a leak. I don't recommend using A/C sealers because they have a habit of clogging stuff, use UV leak dye instead to find then fix the leak. Also be sure to use the proper refrigerant type, there's a sticker underneath the hood indicating the proper type.
Other than that, good video and solid explanation.
First
P.S. Hi Bart
P.P.S Nolan why were you at the Kia Forte launch? You don't do the new car show and AFAIK they didn't have free milk just alcohol.
2nd
He wanted Franks Big Donut, or maybe an Anchor Stream beer. It's not an IPA, but its f r e e
Watching this video before taking a test a about climatization systems, Donut is the best!!!
“1969”
Nice..
I love science, I love cars, and also humor. This channel (and group of videos) very much reminds me of Bill Nye. Only in this case, car related. Nevertheless, learning more about what I love is always great. Thanks for also making it interesting to boot
👍
How did orifice tube not get an "eeeeeewwwwww"?
I’m mastering on my ASEs certifications for diesel technician if I ever become a teacher at the University I graduated from. Man ima use all your videos hahaha you explain everything so simple and is so easy to understand everything you say
2:13 the day WW2 was invented 😂
Here’s something fun you might not know. Firefighter’s compressed air bottles, when used till empty, form ice on the outside of the bottle even when they are in a burning building (which can be upwards of 500 degrees Fahrenheit).
I miss Bart :/
Need to bring this show back
RIP GM
This guy is a great teacher. Uses great techniques that makes this a memorable experience. Even if it is a video.
I understand how ac works better in here than from that 3d animation
But i thought AC is Alternating Current
AC does also stand for alternating current
4:20 It's actually the opposite.The liquid that expands into a gas,does so by absorbing energy from the environment.Gasses have more internal kinetic energy than liquids so the liquid needs to absorb energy to turn into gas(evaporate),that energy needed to turn into a gas is called latent heat.
When heat is absorbed by the liquid,the temperature goes down because that energy was absorbed by the liquid from the environment to increase its internal kinetic energy.
Hey random person scrolling down the comments..
Have a great day! :)
GuelphRacing Thanks!!
Why thank you
thanks lol,lol
Fuck off
Thxu2:)
Great video. Would have liked to see "latent heat" explained in this process to better explain what's happening.
Idc about AC I want to see more of those *SHORTS* !
i just found this series and i instantly love this guy
Why are talking about ac in the winter time
this is for the aussie bros
It's never winter in California
@@PrinceofPwnage that's because California is screwed up in many ways, fall into the ocean already.
No winter in la
Winter doesn't blanket the entire Earth. I know mind blowing right?
Garage science fit perfect on Saturday schedule donut bring this guy back pls
Those hot "hot pants" 😏
@Elon Blunt rly
It’s the hot seat
3:48 32 degrees = water freeze. Makes sense
BRING THIS SHOW BACK!
this is the most "cool" video a seen and made in "hot"climate,in california......
*delet dis*
@@wannabelawnmower2590 "delet" as you say it yourself
The best way to learn about thermodynamics and heat transfers IMO
Girst
Actually first but no one cares
1nd*
2st
3:06 that pressure dad joke made me laugh way too much
Here's what I'm making of this: Basically, we're manipulating the boiling point of the liquid inside. Boiling point is lower on the dashboard side, so any heat on that side quickly makes the liquid vaporize. In doing so, it's absorbing energy. I'm assuming latent heat is at work here too, so it's taking out more energy because it's undergoing a phase change. Then, the vapor is pressurized so that the boiling point is higher on the outside of the car. Because we've raised the boiling point, the vapor is able to reform into a liquid once it releases heat into the atmosphere.
The fact that this relies on latent heat actually makes it quite similar to how we cool down by sweating, except with our bodies, we need to actually expel (and lose) water, whereas in this system you can keep recycling the same liquid. Pretty cool!
EDIT: Actually, I don't think this is correct.
Dude that joke about queen and pressure for me it was hilarious hehe Good Job 👏
5:58 Those packets in beef jerky are a mix of table salt and iron filings. They're only a dessicant in the sense that the tiny amount of salt absorbs some if the moisture in the jerky to start rusting the iron. The rust absorbs any oxygen in the bag of jerky, keeping bacteria from breathing.