What Makes Radiators Bang So Loudly?

[@a_kid_called_apathy4994]

My radiator bangs more than me :(

[@fandyus4125]

Thats the thing, I suck so much I can only sucessfully roast myself.

[@LordZevv]

Mine too. And I don't even have one.

[@46erbfume]

😂

[@OlaftheGreat]

I have an extra sledgehammer if you wanna bang some stuff

[@rrcczz]

what makes my neighbors bang so loudly?

[@kahanumorales]

Catwow Babies. Banging comes from babies

[@pigking3854]

woah there...

[@josuemena5258]

The need to pass their genes to the next generation

[@xxXthekevXxx]

Lmaoooo

[@juliatheinternetuser]

Something is expanding but I don't think it's the steam...

[@fullmetalhaggis]

Never heard of a steam radiator. In the uk we have central heating where the boiler heats water that is then pumped through the closed system of pipes and radiators. They still make knocking or clunking noises but there is no steam involved.

[@DonnaMSchmid]

We have both types in the US... Mine happens to be steam, but many radiator systems are hot water (like yours).

[@laurenellison7592]

I have water radiators too in the UK but they still bang a lot

[@karljones543]

With the water radiators I have in Germany I have to bleed the system about once a year to get rid of air bubbles which make a horrible gurgling and banging sound.

[@worldview730]

Maybe they have a water (Hydronic) base board type closed system

[@samramdebest]

wait wot your radiators use steam? our radiators have 2 connections: warm water in, slightly less warm water out. no steam.

[@TheChipmunk2008]

Yeah. radiators don't run on steam in any modern country

[@cmuller1441]

Using steam is a total waste of energy: heating up water to such high temperature reduce the efficiency of the "boiler". Also consider the risk of high temperature pipes...

[@smcphee6940]

Boston, Massachusetts here: Just the other day we got hit with a storm and my thermostat broke. The indoor temperature of my home fell to 10°F while outside ot was 2°F but wind chill put it at -25°F or worse. If there was water in my radiators instead of steam it probably would've froze and expanded and damaged them. So yes they're old and inefficient, but they are better in emergencies

[@samramdebest]

well it's not pure water. there is a bit of oil in them as well if I'm not mistaken.

[@joanpey8809]

Using steam in homes to keep a comfortable temperature might be a waste of energy and also a danger in itself for the high temperatures and possible pressures in the piping, but it is widely used in industry when you need to heat up things over the boiling point of water and up to a certain temperature where other devices like gas burners do the job better. In the dyeing industry you need to heat up water to 130 Celsius and a main steam boiler with some piping to the machines is still the way to go so you don't have to maintain a heating device for every single heating point. I am aware that you refer to home devices when you say steam is a total waste of energy. But had to comment to make things clear for those who just read the sentence straight.

[@seizmic7024]

Why is this a question I always had but never asked?

[@Slekejkwls-1819]

You should ask what you wonder

[@Chrispius327]

Same lol

[@johnp7158]

because andrew schultz talkeda bout it haha

[@officer_baitlyn]

i didnt know steam radiators were a thing i think most german ones are just water based havent seen a single steam system in a regular home

[@BooBaddyBig]

Same here, only saw steam radiators in history books. Wow! People still use those!!!

[@tungom]

Same, never heard of that in Belgium.

[@USSAnimeNCC-]

If you live in an old apartment like me their there

[@matthijndijkstra25]

So most do use water? I always assumed they use water indeed. (Dutch here)

[@matthijndijkstra25]

Though, have heard the "banging noises".

[@abs0lute]

Gotta be a US thing, never heard anything like that here in Europe

[@byte5126]

Well, my radiators here in Germany most definitely do that, although the noise seems to come from the pipes leading into it. And sometimes the pipes in other places (like really far away from the radiator) even start rattling like crazy. I have to turn the central heater of for the nights in order to be able to sleep. The house is from the 1950s though.

[@ElectariumTunic]

This is the first time I've ever heard that radiators _can_ make noises, and I'm from Europe and grew up in a house from the 50's. But then I have never heard about steam radiators either...

[@Icreaka]

We have water radiators at home here in Slovenia (eu) so the only thing I hear is water floating inside quietly lol

[@tungom]

I'm in Belgium,only heard radiator noises in old houses, and never a bang. I don't think our radiators use steam.

[@byte5126]

Im also pretty sure that my radiators don't use steam, they have to pipe connections and a valve for letting air out at the top. if you open that and all air is out of the radiator, water comes out, so i'm pretty sure they use water not steam.

[@JerichoAndFriends]

But what is the noise if you don't have a radiator?

[@pikmansion1648]

Jericho & Thunder The 2 Gray Cats ME

[@pikmansion1648]

Or anything else like falling or the floor expanding due to freezing underneath, neighbors, depends where you live

[@404thegeek3]

Probably a ghost

[@drumisfum8284]

Jericho & Thunder The 2 Gray Cats *halloween theme song plays*

[@alyssawinn4710]

The cat, every household should have a cat to blame.

[@leekleek1]

Why hasn't all bread slices evolved to be end slices because of lack of predators?

[@DrunkenAussie76]

Sliced bread is only 110 years to evolve. It would need a much larger timescale to evolve even if it could.

[@jacobthornton9660]

That was funny lol

[@xxXthekevXxx]

Lol I’m imagining a whole loaf of end slices and it both amuses and disgusts me 😂

[@detectatrons275]

DrunkenAussie it’s a joke lol

[@shocknix]

End slides are the best

[@CharlesTheClumsy]

Never heard this. I live in Sweden, we have modern radiators.

[@handsomesquidward121]

Charlie Clumsy I hear they heat homes with reindeer breath in Scandinavia.

[@CharlesTheClumsy]

That's true. Very environmentally friendly.

[@Andreas4696]

In Norway most of us don't even use radiators, we just use electric space heaters and heat pumps (AC units that can be reversed to heat).

[@EmployeeJoe630]

I live in Arizona, we don't need heat

[@lichtgestaltkruemel8914]

Electric space heaters? Seriously? The power bill must be insane. We use radiators in Germany too, but its full of water not steam. No noises...

[@pnkflyd66]

Maybe radiators bang so loud because they love each other.

[@gpcaraudio]

Banging loudly is perfectly normal

[@kirknay]

This is also known as "steam hammer", and can actually damage steam piping in some cases, such as that release valve. Practical Engineering made a video on this.

[@S3NDP13]

Finally, a video thats trending that actually deserves to be in the trending page... Congratz.

[@musclehank6067]

Radiators are for the weak

[@cathiproctor6877]

Muscle Hank no there not

[@AHunDread]

Hank can obviously provide enough body heat for at least a quantity of Hank Earths.

[@CharlesTheClumsy]

Not if you live in a country where it gets -30C.

[@efrenchen293]

Holy crap it's muscle Hank

[@Calus767]

Charlie Clumsy you obviously just don't have enough muscles, unlike Muscle Hank who is STRONG, and can melt your feeble radiators with his burning passion alone. His muscles produce enough heat to not even know cold, though I'm sure if he ever came face to face with the cold, he'd punch it into submission.

[@fireriffs]

The worst banging often comes from over filling the boiler. 3/4 full is about as full as we fill ours. Anything more than that and you start getting the loud bangs.

[@KazeShiniSK]

They just really into each other, man. Let them love freely

[@BenTajer89]

The intro was a perfect description of my life.

[@onuadhain7399]

It 3 AM, you haven't been able to go to sleep. Why? The radiator refuses to stop banging.

[@elisavaldez5222]

Congratulations on #1 trending here in the U.S!!

[@magic_cfw]

What Makes Radiators Bang So Loudly? My 2yo cousin smashing whatever she finds against it.

[@NathyIsabella]

"Thanks to all the patreons for keep these answers coming"

[@Kotz_en]

Sometimes my upstairs neighbors make some really loud banging sounds too.

[@recon6104]

Kotz O_O I don't think that's their radiators... O_O

[@thomaskelly2040]

We'll try to be quieter next time. Lol

[@mimimarcus]

SciShow is No.1 on trending. Faith in humanity restored. :D

[@Jackal]

Cuz they go hard!!! Lol

[@microbuilder]

They just send it! ....sorry...

[@girlybooboo8825]

#1 trending. Congratulations!

[@jamesbrowne1004]

We had those when I was a kid. The whistling was cool air escaping from the bleader valve before the steam reached the bimetal valve, heating it and closing the system. It was kind of comforting hearing the heat come on. Something missing from modern hot water and hot air systems.

[@blf6260]

And here I was thinking it was the couple that lived directly upstairs all these years.....sorry I called the cops on you guys

[@ZEbelgiumfreak]

Asking the real questions here!

[@ericking4072]

StephDRX I was an engineer in the boiler/machinery room on a USNAVAL AircraftCarrier.TONS of engineering schooling,etc.It's what we engineers call"water hammer"the differences in thermal gradients (steam vs.water temp.)produce increases and decreases in velocities of mass (steam and water)when they encounter configurational differences in the system(changes in piping structure)causing the internal steam to change to a more dense structure,slamming against the pipes,hence"WATER HAMMER".HAPPY NEW YEAR!😆

[@ericking4072]

ExistenceisillusionREAL PROPULSION ENGINEERS CALL IT WATERHAMMER.

[@ericking4072]

Existenceisillusion -YOU NEVER "REALLY SAID"ANYTHING.AND YES,IF CAP LOCK IS STUCK IN ON;YESSSSS.P.S.I ENDURED MULTIPLE TOURS IN THE PERSIAN GULF BOTH AS A CONSOLE OPERATOR AND A GUNNER'S MATE,SO WHILE YOU MAY VALUE YOUR INNATE"OPINION",FROM A COMBAT(BEING SHOT AT AND SHOOTING BACK)STANDPOINT,YOUR POINT IS INVALID.GOOD DAY😆

[@ericking4072]

Existenceisillusion -Thank you for your service,Brother,no matter who it is,I NEVER intend to offend.Being a fellow combatVet exponentially multiplies,and intensifies the emotional value of it all.P.S.-It IS by GOD'S grace that I AM HERE😆.Having worked for the US GOV (as have you,not certain of your level of imbed;I possessed a SpecializedSecClrnce.fairly common)we both know ALL'S NOT WELL.HappyNewYear!P.S.my phone finally let me turn off CAPS😆

[@JeremyWS]

If I hear a loud bang in the middle of the night, I know it's not my radiator, cuz I don't have a radiator. My house is heated a different way. So I don't have to worry about this problem. It's all good now. Great video. Keep up the good work.

[@dhawthorne1634]

If you have oil or gas heating, you do still have a radiator. It is a filled loop system, not a steam one and the radiator(s) is(are) in the duct-work, not freestanding. If you have zoned air, you may have more than one. If you have one thermostat, then it is likely you have one, right by your furnace.

[@JeremyWS]

My house is heated by an electric furnace, which doesn't need a radiator. At least that's how I understand it.

[@Asmodee1992]

I have a question - How mosquitos survive -20C or colder winters, regularly, in central europe ? Shouldnt they be just ripped apart by freezing water /that would be nice/ ? THX

[@blazebluebass]

Mosquitoes aren't water. The water molecules in them might not necessarily freeze or create crystals.

[@parkashland]

Good info, thanks. One minor correction: The steam radiator vent closes when the steam reaches it and the heat expands a bi-metal which closes it. (It's not pressure). Thanks

[@arsemodeus]

For anyone who ends up calling a plumber some useful phrases are "Dzień dobry" - hello, "Proszę naprawić mój kaloryfer" - please repair my radiator and "Dziękuję" - thank you. Just remember to have a bottle of vodka and potatoes ready for payment.

[@ellaivgi2780]

Thank you. I was able to fix it thanks to this video.

[@maxwellday5096]

I never knew steam radiators existed

[@blueblade455]

Maxwell Day how old are you?

[@maxwellday5096]

blueblade455 I am 15 and live in the UK where we have hot water in them

[@maxwellday5096]

blueblade455 And most of europe doesnt use Steam as far ask I know. Thr US isnt all that happens in this world

[@elgordo271]

They were invented in your country by James Watt. Yes, THAT Watt.

[@TonyP9279]

You need to look at some old 19th century homes and you'll see them.

[@someonewatching6552]

Congrats on #1 on Trending

[@gracehod08]

It's scarier at night though.

[@godlesslippillow]

Sci show... giving the answers to questions I didn’t know I had.

[@Bleenga]

As a wannabe KZbinr and all around poor person, noisy apartment radiators have repeatedly forced me to stop filming... over and over again. Seems like it's running 24/7! Help!

[@B3Band]

Oh yeah, THAT'S why you don't have a great channel. It's the background sounds. Sure.

[@Bleenga]

Lol. Who said my channel wasn't great????

[@bdijkstra1982]

Move to Europe, no steam radiators here.

[@paytont.murphy1700]

Love clicking to learn about things I didn't know I needed to learn about.

[@MyNothing001]

once the heat came on at my old college apartment I couldn't sleep without zzzquil because of the dang radiator

[@BruceWayne-pm6co]

How did they know that this was going on in my life at this specific time?

[@circewang]

Best timing ever! I just moved into a really old apartment, and it's the first time I've got radiators. I was worried that the banging was something serious :P

[@kazumayugami7035]

Saaaaame

[@TheofficialTrina]

Same. I can’t sleep

[@Oakleylaurie]

@@TheofficialTrina I just moved into an apartment with these. My white noise machine and ear plugs help!

[@HermyWermy]

I've lived in my house since I was born, I've been dealing with the loud radiator all my life. Some people cannot sleep with this noise but without the noise I just lay there at night unable to sleep.

[@bearcatben4762]

Come on its 2018 it's time to forget these

[@nilamotk]

Im in the HVAC industry and work on boiler systems daily.. Youre right if it where a steam system but 99% of boiler systems in residential applications are not steam boilers, they are simple hot water boilers and hot water runs through the rads, not steam. In this case banging usually indicates a serious issue with either the systems pumps or the boiler itself. Usually these sounds are caused by the boiler over heating (because the pump is not circulating the water) this generates a flash steam bubble that usually over pressurizes the system breifly. This pressure spike blows out the pressure relief and the system auto fill valve quickly fills the system back up to operating pressure. When the boiler fills up quickly you get water hammer, (same if you slam a water tap shut quickly in an older home with no expamsion tank) and the water hammer is the cause to the noise. Other times just the steam bubble rising to the top of the system can cause the water to hammer through the pipes too. But if you're getting banging from your rads, and if there is water all over your boiler room floor, you should get is serviced before it kills you in your sleep.

[@Karabetter]

I always figured it was the site of repair plummer's crack that scared the ghosts away. lol

[@mjstory1976]

I remember having a radiator in my house when I was kid

[@GriefMuse]

'Nureek'. So the next one will be a 'retut', and the one after that will be a 'hanunga'. Squrlookal !!?

[@SciShow]

Red Dwarf!!!

[@radiantpies9747]

I had a classmate with mental problems in fourth grade, and she sat next to the radiator in spanish class, and whenever it would make noise, she would scream "STOP IT!" really loud. And we had to deal with that the whole class period.

[@user-cl5jn3zy5z]

“It’s 3 in the morning...” *me* : 3am challenge...

[@SINDRIKARL1]

Or if it's like in many apartment blocks and larger buildings here in iceland where every radiator in the building connects to a central unit, if a neighbour in the other end of the building bumps into it or starts clanging it with a hammer the sound carries all the way through the building through the metal pipes.

[@sogerc1]

What's with the [406] on his shirt?

[@frenciobencio]

Looking on google i found it's the area code for montana, if it represents something different please tell us

[@cattoes666]

It's just the only area code in Montana. These guys are based there.

[@dylanflynn1895]

Here I was thinking given the brackets it was an error code for content missing

[@Starfloofle]

Google says it can also be an error meaning "Not Acceptable" lol

[@cattoes666]

TAmari They're located in Missoula, and Montanans like to wear 406 themed apparel. You see those numbers on the daily here.

[@aadi1]

"Plumber" and "banging sound" have always been closely related. 😂

[@richtercl98]

can someone tell me what this [406] is about?

[@MatthewBishop64]

406 is a http error. Like when your browser can't find a web page, you get a 404 error. Errors starting with 4 are client-side errors meaning the client (browser) has a problem, not the server. 406 is the "Not Acceptable" error. developer.mozilla.org/en-US/docs/Web/HTTP/Status/406

[@seabb]

Nope nope, I believe his shirt is referring to the Montana area code 406. Scishow is based in Missoula, Montana and I hear it’s fairly common for people to have 406 on their shirts as a sign of state pride.

[@MatthewBishop64]

Shell B, thanks for that. Sound like a more reasonable answer. :)

[@raulsaavedra709]

Some short recordings of the actual sounds being referred to here would have been great ;)

[@UnPhayzable]

The Birds and the Bees... And the Radiators

[@tugspeedman2091]

UnPhayzable haha

[@Soooooooooooonicable]

I find the sound of radiators to be comforting.

[@culwin]

I don't have a radiator because I don't live in Brooklyn in 1938

[@dhawthorne1634]

Brooklyn still has a public steam utility to this day. Also, unless you have baseboard heaters, a heat pump or use portable heaters, you've got a radiator; it's just inside your duct-work instead of sitting out in every room.

[@culwin]

Nobody cares.

[@ravendrums965]

Dude I love the wording of the title

[@EmployeeJoe630]

My radiator is different than the kind you described. Clearly this means I am superior to all others I AM A GOD AMONG MEN!!!!

[@EmployeeJoe630]

Constanze Albrechtsberger i cant get the barbie girl song out of my head I HAVE TO!!!!

[@EmployeeJoe630]

Constanze Albrechtsberger *An heros*

[@EmployeeJoe630]

1/1 KtD Ratio

[@pikmansion1648]

This gun tastes funny listen to Justin Kuritzkes that'll get stuck in your head instead

[@pikmansion1648]

Danjel Topjana you made alot of videos very quickly woah

[@jordanf4251]

I live in a dorm that was built in the 50s and the first time the heat was turned on last semester sounded like the pipes where gonna blow and still makes the banging noises every time the heat is turned on lol so thanks for the explanation!

[@colecates1479]

*IT'S THE HISSING MONSTER* *UNDER THE EVIL BOX* (ELF REFERENCE)

[@tracewyrm]

Really intereating. Love your channel. Keep it up

[@Kacs_ky]

This is clearly a cover up video by the monsters under your bed and the little goblins in your walls!!!

[@ShakeTheBox]

I love SciShow, but I'm kind of surprised that this specific episode is trending. I didn't think that many people besides my grandma had these old radiators. Great explanation, though! I always wondered why it made those sounds.

[@whatsopanime]

I don't even have a radiator, so why am I here..?

[@yush1260]

START OFF THE YEAR WITH A BANG In my radiator

[@TheUnderwood1990]

That is not a steam boiler in the beginning of the video

[@dhawthorne1634]

Good eye. It's an "instant" water heater.

[@SpectraNyte]

I actually looked this up because almost every one of the radiators in our new apartment make the loudest god awful clanging noises when they are on. You can actually feel the floor shaking near the ones in the bathroom, bedroom, and kitchen. At least now I know there might be a semi easy fix without replacing them all...hopefully I can get the apartment management on board to try and get these fixed so my boyfriend and I will be able to sleep at night!

[@nahiyanalamgir7056]

Did you manage to get yours fixed? I can't sleep at night for this reason.

[@tankofnova4629]

Hey Scishow, you are all really smart guys and gals so maybe you can clear up a confusing event in my childhood. It goes like this. I was 9 or 10 years old playing video games on the top bunk of a 2 layer bunk bed looking down at ground level to see the TV. I was at my Aunt's house and mom calls me saying it time to leave. I go to grab for the ladder not knowing my prankster cousin moved it. I ended up falling off the bunk bed with nearly all my upper body crushing my right hand of witch the back of it hit the ground. The intense pain and possible broken bones[didn't happen... somehow] isn't the confusing part. That comes a few days to 2 months later where all movements in my hand were sluggish and uncoordinated or flat out impossible even way after the pain went away. What part of my hand was damaged so badly that this happened for so long? I'm 18 years old now and its as if these events never happened. My right hand has no random spikes of pain and there are no movement limitations following the recovery, but I still remember how I nearly broke my hand and how I couldn't hold anything, open any doors or play my Ps2 because my hand was nearly as stiff as a bored.

[@tankofnova4629]

I can but I won't be able to answer till after I watch a few videos. I'll answer you in the comments of one of your vids.

[@Buckleupfacts]

tankofnova Take your time :)

[@MrDavidCollins]

Sounds like you may have pinched a nerve from internal swelling or bone-movement in your hand. A similar thing happened to me when I was younger. I slept on a hard floor, then woke up with my legs not working. It was pretty scary, but it came back a few hours later.

[@JiveDadson]

What happened was that you hurt your hand and it got better.

[@borrowtopfan]

Why is this number one on trending

[@m.s.l.7746]

I always figured that it was just hot water or oil flowing through those heaters.

[@michagrill9432]

Oooooh okay that explained *a lot* of mysterious bang sounds I heard when I was young and slept by my grandma lol

[@guy_does_nothing_productive]

Cause they like to do it so much😏

[@AlpineShenanigans]

So relevant going back to my apartment this semester

[@LearningToFly1000]

Pretty good but you have t even tried to explain how to solve such issues other than suggesting to call the Plummer

[@MichaelRuwurm]

I was living in a flat with long copper tubing running along my room. The expansion at heating up the movement back caused slip stick motion at the mounting points of the conduit, which was a loud "tick, ... tick, ..." sound. Anoying as hell, but it helped to lubricate the hosing clamps.

[@DataStorm1]

what the F... the water isn't heated past the boiling point..... there is a pipe with incoming hot water and a pipe with outgoing hot water.... and that gets circulated thru all the open radiators. No idea where those radiators on Steam are installed, but those are waaay too hot for use. Also, its very energy in-efficient, boiling water to steam to use that as heating is a lot of heat added to water that is not needed in a home.

[@DataStorm1]

Yeah I now understand the system, its archaic old crap, inefficient.

[@krashd]

Yeah. but you were still wrong, you should never try to correct someone using an assumption, it makes u look like an ass and mption.

[@DataStorm1]

Hey, Then don't come with out of date crap that is totally inefficient.

[@greensteve9307]

So glad that I live in West Australia and don't have to deal with central heating!

[@daemon.mythos]

(406) in da house!!!

[@the_sideshifter]

I always thought it was an air bubble going thru the system. Cheers for the video

[@dhawthorne1634]

Knocking is very uncommon in a filled loop system (hot water instead of steam). If you have a filled loop and still get knocking, there is a pump or valve hooked up to the hot water that is shutting off flow too abruptly and causing a heater hammer effect. It would be a good idea to get this checked out so you don't develop any cracks in the solder near the source.

[@samdavies6404]

Sorry but you are kinda off really wrong about the "steam". I heating system should be FULL of really really really hot water not steam if you have air in your heating system it needs "bleeding" out via a bleed valve at the top of the radiator. Steam in your system also makes for an unbalanced and a less economical system. Talk to a plumber if you don't believe me but I have been in the building trade for over 10 years and have not come across the kinda of heating system you are explaining hear. The more likely source of the banging is from the metal expanding and contracting because of the heat. Not because steam and condensed water is moving about haha. Just look up how an everyday normal heating system works. Also your house would be an even severely dangerous place to live as the pressure in the heating system would have to be so god damn high if there was a problem it could act like an explosion

[@bluebird4417]

Why is this on #1 trending...?

[@mulymule12]

New house, so none of these problems for me :)

[@jestekine5892]

U

[@tungom]

Like any house less than 50 years old

[@UnbornHeretic]

A turtle talking is enough to interrupt a conversation with a turtle.

[@simonj48]

[406]

[@KevinLin145]

Watching this on my bed when the radiator keeps making noise. Okay it's not ghost, now I can finally sleep in peace.

[@benscoggins3111]

*dab*

[@FBI-ov7lb]

*You have been stopped*

[@coryhermanestes5085]

What happened to the good ole days when us scishow fans could submit questions through comments? Times. Have. Changed.

[@TheChipmunk2008]

Clickbait title. Very few if any radiators are run on steam, so the explanation is incorrect

[@dhawthorne1634]

Actually, in some cities, steam is still a public utility like water, gas, electric and sewer. It is cheaper to use the steam hookup than to heat your own water for a radiator system.

[@atlas5280]

You're comically wrong.

[@TheArtofInternet]

Please tell me your joking

[@tylocook]

I think almost every apartment in Chicago uses steam radiators.

[@unclesunbro1577]

This I did not know. Neat!

[@johnnychang4233]

Does induced flash condensation of steam equal to the phenomena of cavitation in liquid water?

[@dhawthorne1634]

Close, but not exactly. Cavitation is in an atmosphere of liquid whereas flash condensing is in an atmosphere of gas. While the water does move some, the low pressure actually pulls the low pressure valve back into the open position for a second until more steam rushes in and slams it shut again. This spike in pressure can cause the over-pressure valve to open for a second, as well.

[@johnnychang4233]

D Hawthorne But the banging is heard all along the lenght of the vertical raiser and specifically coming from sections which has no fittings of valves, only smooth pipes in between. Does condensed water dripping back through the main raiser cause micro vacuums in the stream of of hot steams by providing a condensation nuclei and flash condensing some of the the same way a snow making machine do when water in gaseous form a little above ambient temperature croos the curve of the phase diagram toward the solid portion?

[@rosemaryhenriq2536]

*1 on Trending* _What makes the radiator so loud?_ *2 on Trending* _THE MYSTERY THAT KEEPS NEIL DEGRACE TYSON UP AT NIGHT_

[@bria6094]

We had these in school 40 yrs ago. Teacher said banging was last years students that talked during class and failed were chained to pipes in basement banging for someone to come free them. Everyone got good grades after that

[@GhostsOfThings]

Interesting! We don't have these in my part of the world, at least not that I've ever encountered, and now I'm kind of glad about it.

[@Dyslexic-Artist-Theory-on-Time]

What about a video on the big questions of cosmology?

[@AthenaGM]

"It hitti the pipe it hitti the pipe"😂 ~Andrew Schulz

[@bandito906]

why is this #1 on trending

[@supersmashbrosevil]

Thankfully I don't live in a super cold country so I can still talk to the turtle just with 5 sheets in the very worst days of winter

[@Ayaforshort]

Another question: why not install central air conditioning and heating when you buy the place?