"Flammable" Refrigerant Facts for Residential HVAC

In this training class, Bryan Orr from HVAC School provides key facts and information for HVAC technicians about the transition to mildly flammable A2L refrigerants like R-32 and R-454B being adopted for residential and light commercial systems. He covers the reasons behind the phase-down of higher global warming refrigerants like R-410A, the differences between A2L refrigerants and propane, similarities and differences compared to R-410A, changes to equipment and components, best practices for handling mildly flammable refrigerants safely, evacuation procedures, leak testing, and more. This is a must-watch for any residential HVAC tech getting ready to work on new A2L systems in the coming years. Bryan dispels misinformation and fear-mongering around these new refrigerants while still emphasizing the proper precautions that should be taken.
Buy your tickets or learn more about the 6th Annual HVACR Training Symposium at hvacrschool.com/symposium.
Read all the tech tips, take the quizzes, and find our handy calculators at www.hvacrschool.com/ or the HVAC School Mobile App on the Google Play Store (hvacrschool.com/play-store) or App Store (hvacrschool.com/app-store).

[@brianmcdermott2430]

Great info. Bryan. Thank you.

[@tedbell4416]

R-22 "significantly lower pressures" , yeah and equipment that lasted 20-30 years plus

[@youarethecreator1]

100% correct

[@cliffanderson7544]

Been doing hvac 16+ years now. Still have a 23 year old r22 system that runs perfect. I will run it until I no longer can!!!

[@whofixeditanyways]

@@cliffanderson7544 I just serviced one from 1975. Someone cut the blower cap out and it has been running without a cap for I don’t know how long. The condensing unit is from 1995. Still chugging along.

[@marknaravas318]

The house I grew up In had an American standard that went 35 years till it blew a condenser. The Heil replacement only made it 7 years.

[@tristantimmonstt]

Service three 1995 Lennox 5 ton condensers at a shop and all have the original compressors. They don’t make em like they used to..

[@s.j.5850]

You really know your stuff Bryan. We appreciate you explaining the significance of the new refrigerants that will become the industry standard.

[@bikerbobcat]

I've spent the last couple of years doing commercial almost exclusively and only heard a little about this changeover, so was very nervous, but this video is very helpful. Thanks so much for great information and presentation, as always.

[@timrob0420]

You are truly a blessing to this industry

[@joez.2794]

I'm in IT - watched the whole thing. You're a great presenter.

[@antonioharris-g.a.-hvactec4997]

The two teachers taught well as usual.The class was interesting to learn from.The best class to teach with no mental health distractions with skybox proofreading.#GreatJob!

[@scottritchey7492]

I'm v. To

[@robertcook7886]

Great presentation…. Very in-depth knowledge of materials and actual repair/installation experience is very obvious and makes the training very understandable and relative….. Bob

[@myerschase23]

Great crucial information explained very well. Thanks for your research and sharing this to help with the upcoming changes. This info is limited and we know we have a great deal of trial and error coming with these changes so this helps tremendously. Thank you

[@InsideOfMyOwnMind]

This looked like perfectly done presentaion. It would be facinating to see some of the notes that the people who were there took.

[@brewaz]

Your presentation is very informative and easy to understand thank you for sharing!

[@timothyvaughn8482]

I'd love to work for your company the training you provide to your employees is awesome most companies could care less.

[@acservicetools]

Good job Brian. The regulations is almoust the same in Europe to. Love your videos. Learn a lot from . Ciao

[@juanarboleda]

Master Class, Thank you 🙏

[@garypoplin4599]

32:03 We used nail plates on wooden studs where NM cable is run in the wall closer than 2 3/4” to the wallboard (I think that’s even in chapter 70 of the NFPA code). We affectionately called them kickplates. But that was years ago, now.

[@WadeSanchez-hw4zp]

I really appreciate these videos

[@danidoom666]

Thanks for making these videos!

[@frankblankenship3026]

Great presentation, thanks

[@TerryFrenchy]

Always awesome I formative videos. Thanks!

[@youarethecreator1]

HONEYWELL EXPLOSIVE ORDNANCE DISPOSAL (EOD) SUIT FOR HVAC TECHNICIANS AND INSTALLERS. $1899.95

[@joez.2794]

*MANDATORY

[@chucksmoko5348]

Explosive vs flammability are not one in the same.

[@jcaleca60]

E O.D. 😂

[@rwcasto]

[@chucksmoko5348]

The SCOTUS RULING striking down Chevron Deference may affect EPA powers going forward.

[@hallkbrdz]

Let's hope so. Common sense should prevail to keep costs low for consumers, such as removing the leak repair requirements. None of these refrigerants are an issue with the environment, they are all about selling products covered by patents for maximum profit.

[@my_channel_44]

It's cancels them. EPA cannot write rulings that have legal effect.

[@blondestrainger]

Go Chevron Deference ! This is crazy that we keep changing rules when patents run out

[@drewtronics7406]

Good to see someone gets it. The excuses for doing this, are just that, excuses. Gwp, ozone depletion, what a massive scam.

[@my_channel_44]

​@@drewtronics7406The Ozone cycles in and out and has nothing to do with R12.

[@drewtronics7406]

@@my_channel_44 😂😂😂😂

[@troydspain1099]

Happens with pharmaceutical world as well

[@drewtronics7406]

@@troydspain1099 💯!!!!

[@joshuaricks7730]

55:00 You will eventually will have to have some type of mitigating active system in storage areas with sensor and a means to ventilate.

[@mahmoudalimardani5490]

Thanks a lot for everything

[@bobanderson1727]

Great information. Thanx

[@Studentofhvac]

Excellent!!!

[@Gary-ts6dh]

32:09 - I think it's called a nail plate in the Code; but, it is affectionately known as a "kickplate" in the electrical trade. We use them on wood studs with NM cable running closer than 2 - 3/4" to the rough wall.

[@Ryansroga-wm6pj]

Pretty cool thanks for sharing

[@davec4818]

“What do the kids say today”. Got me 26:47

[@brenninwatts1249]

The part about not unsweating anything and to cut it out because of residual refrigerant in the lineset. Does this apply for example if I am changing a filter dryer, compressor or evap coil and I have the system recovered and shraders pulled and have nitrogen flowing? I would thing the nitrogen would have pushed any residual refrigerant out including displaced the oxygen to keep anything from igniting.

[@jk-mm5to]

Would it be too much to ask for you to issue notifications for upcoming videos?

[@a94cobra]

Good stuff. So...r-32 could go in a 410 system but it wouldnt have all the new safety parts so we shouldn't retrofit?

[@youarethecreator1]

Here is some scientific information that should be taught: A2L laboratory testing was not within the stoichiometric combustion range of the A2L Gas. This gas is combustable in concentrations of less than 13% at room temperature and normal atmospheric pressures. See the MSDS: "Flammable gases, Category 1 Gases, which at 20°C (68°F) and a standard pressure of 101.3 kPa (14.7 psi): (a) are ignitable when in a mixture of 13% or less by volume in air; or (b) have a flammable range with air of at least 12 percentage points regardless of the lower flammable limit.

[@darylfortney8081]

Can’t wait for this transition to complete so I can finally upgrade my r-22 seer 10 unit from circa 2000. Skipped 410a entirely 😅

[@darylfortney8081]

Sounds like a guaranteed and great investment just stocking up on 410 right now. Might sell off some stocks and buy a warehouse of 410 tanks.

[@darylfortney8081]

You forgot to mention no smoking while working on a system

[@mikafoxx2717]

That just makes it easier to find the leak​s. @@darylfortney8081

[@joez.2794]

Why wait? Propane is available now, and is an upgrade in efficiency and performance to boot!

[@darylfortney8081]

@@joez.2794 because they haven’t even really begun to release all their new models yet.

[@blondestrainger]

Burned out terminal on the compressor that loses its complete charge with a shower of sparks … Boom

[@kevinroberts781]

I use R290 in my 20 year old R22 system. It's not as efficient but it's close enough to not matter.

[@beachboardfan9544]

What is the best performing refrigerant regardless of safety/enviro?

[@GMBaz]

Della and Senville are selling R32 mini splits.

[@tobiaszkucharczyk8595]

10 years ago r410a

[@matth.4932]

Does R22 or 410A produce phosgene gas if exposed to a torch, during a compressor "unsweating" for example? Keep getting mixed opinions out there. Thank you for such informative videos, keep up the great work!

[@adambarrett3296]

You're not supposed to sweat the filter drier off but it's okay to braze it back on?

[@HVACS]

Yes, you are flowing nitro at that point You could flow nitro while you unsweat but pulling apart under flow is still not a great idea

[@Clapsonchoochoo]

R12 stuff lasted well too

[@melllvar4262]

35:44 Caddie Shack!🤣

[@Elisummit845]

At 32:12 we call it nail plate.

[@jesseanderson4612]

Is there going to be a rule about sitting the condenser 10feet away from the home?

[@HVACRTECH-83]

Lol no

[@youarethecreator1]

Body Armor and helmets will be required

[@EarlHayward]

Packaged system (no line set), 12 feet away from combustibles, solar powered, can only be installed and serviced by those who are EPA608+A3++A2L certified who are also members of the local union authorized to perform such work, used to chill water (special water subject to a special tax), that can then be piped into an air handler (also only solar powered), which provides you to be compliant with upcoming 2026 cooling regulations …

[@mikemorassi210]

So what's the difference between ODP vs GWP? and which is the more determining factor these days?

[@mikafoxx2717]

Ozone depletion happens for the next couple decades due to the chlorine, global warming potential is how many times worse than CO2 it is for warming the atmosphere, but doesn't destroy the ozone layer which protects us from skin cancer etc. r410a is something like 2,200x worse than CO2 when it gets into the atmosphere but no Ozone depletion like R12 (worst) or R22.

[@4wardnthought234]

If the insides of my vents are sweating, that air space is already sealed and dehumidified. The entire system is in the crawls space (4 ft high cinder block walls, mostly closed with several vent openings). Should I encapsulatr the crawl space and run a small window AC during summer to cool that air slightly? I'm in North Alabama, very muggy and hot.

[@smacleod69]

encapsulate and dehumidify Your crawl space has high humidity issues. And if your ducts are sweating on the inside. your air is moving too slow and colder. Do you have a 2 stage system or an invertor?

[@4wardnthought234]

​@@smacleod69 Nope, single stage. Trane XR14 2.5 ton. Split unit, handler is in middle of house in crawl space, compressor outside. All ducting is in crawl space. It was installed 2 years ago, replacing the original heat pump from when the house was built only 16 years ago. The ducting was in good condition so we just used that. On closer look, I don't see the vents sweating, no sign of moisture on any of the vents or duct interior and it's 90 degrees outside, while I keep the inside 69. I may have been incorrect about the sweating, the service man said there was moisture getting in the system somehow because of the signs we were seeing. While some of the registers still look brand new, a few have rust spotting on the inside surfaces and those also have heavier dust buildup inside the ducts. One of them is so bad the register is nearly engulfed in rust and the inside of the galvanized duct is getting rust spots. How could some look brand new while the others are rusting? If it's not sweating from cold air on warm surface, what could it be?

[@smacleod69]

@@4wardnthought234 69 degrees? Thats one problem. When your new system was installed, did you keep the original duct system? And if so, were the boots sealed inside with duct sealant? Are the boots insulated up to the floor in the crawl space. You can use spray foam around the boots to seal.

[@4wardnthought234]

@@smacleod69 Why would 69 be a problem? Don't worry about what temp people like in their house, that's not your concern. Tell them how to get the air quality they want. My followup reply answers 2 of your questions - we kept the original ducts and they are sealed from end to end with ¾ or 1 inch thick fiber type insulation and the metalized wrap. The original installer did a quality job, I haven't seen any serious short cuts. All the joints are sealed with metalized tape, even the connection to the floor. Make sure you read my followup reply - I'm not sure that it's moisture. Since my first comment I looked closer and couldn't find any moisture. The seasonal service guy just said he thinks there's moisture in the system. But he was fairly new. He said that because a few registers that have significant grey/black deposits on the underside and in the first foot or so of ducting. And those registers are starting to rust in small areas, while the other registers and the inside of their ducts still look brand new. It's definitely not Stachybotrys, I've had that before, I know what it looks like. I don't even think it's regular mold, it just looks like dust buildup, but it's not evenly spread like dry dust. It's more like splotches or bundles, like dust that accumulates on water droplets. One register is very bad, literally covered in rust. And the gunk buildup in the duct is very high. But it's like dry dust and cobwebs. Maybe it was wet before at times, but I found no moisture and it 90 degrees today.

[@smacleod69]

@@4wardnthought234 First of all, Ive been in this industry a long time. I know what I am talking about! 2nd, Most of my calls are from people who have tstats set below 70. I will tell you how it is! It will make the system work harder. 3rd, that low of temp is having the sytem run longer, sending much cooler air through your ducts and if your air flow is set right and moving slow can cause issues the one your facing now. 4th, if your duct work is incorrect for the 2.5 ton system you have now, plus duct an R4 instead of R6 or R8, that is contributing to the problem. 5th, if you have dust in your ducts, dirt captures moisture and can create problems. 6th, have your a proper service tech do a static pressure test done on your system! 7th, have your ducts cleaned. Get a thermal scan done of your house. Find out the R value of your duct work. And lastly, you can have whats called a "Duct blast test" done to find out the percentage of duct leakage.

[@kennethbubser9601]

Can we sue epa for all the different refrigerants we breathed in. I got r12 22 410a 134 407c in my lungs every time I disconnect my gauges. My lungs are running on mixed refrigerants. Thanks Epa

[@my_channel_44]

😂 does that affect your freeze point?

[@kennethbubser9601]

My saturate lung temp is 45 degrees

[@dayjeremy]

Now that the US Supreme Court has overturned the Chevron Doctrine this phase-out is unenforceable. The EPA no longer has authority to ban anything without the explicit approval of Congress through legislation.

[@gregorymalchuk272]

Thank God! We need to run with this an start suing over all of these illegal regulations! Hopefully we can also prevent the EPA from stealth banning the internal combustion engine with fuel economy standards.

[@a94cobra]

They still have authority until it's challenged in court. No chevron , almost guarantees a win.

[@ryanehlis426]

I worked for an HVAC contractor one time, they just released R22 from old units, it cost 💲 to recover it so that was not going to happen lol.

[@jerrylockhart3069]

I’ve seen 2 ton infinity systems with 11 pounds factory charge what’s the total charge of 16 1/2 , 😮17 pounds that’s crazy

[@EduardoBurgosRecess]

theres another Channel call Mickey Pipes his making a big deal about this jaja im glad i came here to double check

[@Alienspecies635]

Mikey pipes is your typical trades man that actually knows what he's doing but doesn't have his head screwed on straight. He's like your drunk uncle that busts his ars day in and day out..

[@mikev.1034]

👍👍

[@davec4818]

request: When someone’s talking without the microphone, could you add captions?

[@trevmint5615]

Is that making me sound old? Oof! 😂😂😂

[@danielwalker1922]

Lets go back to r22

[@timbrown9305]

A friend of mine is a chemical engineer that lived through 40 years of these changes. He said it is NOT for the environment and never was. Twisted data on the effects of these chemicals was done deliberately. He said these changes keep the industry selling new equipment and the chemical companies like the one he was in management for, making new product.... He was very high up in a company you all would recognize. Our government is not what you think it is.

[@GilmerJohn]

BINGO. Back when the Ozone problem was invented, R12 cost $1/lb in retail consumer sales. The stuff was used, as an example, for BB "machine guns" and to chill glassware for mixed drinks and so advertised on TV. Why so cheap? Off patent. Funny thing, the replacements were only manufactured when the maker paid a license fee.

[@footiefan51]

Nope.

[@joez.2794]

@@footiefan51 In the the 30 years I've been running my R22 unit, a typical newer system would've been replaced 3 or 4 times. How could the manufacture and disposal of all those POSSIBLY be better for the environment? "Efficiency?" If the new stuff is so much more efficient, how come 15,000BTU is still the max for a 15A circuit? You could get a 15K BTU window A/C that drew 13A in 1985. You'd think we'd at least be up to 18K BTU by now??

[@Carlossoto-rg5hh]

Damn , I'd like to hear what your friend has to say. That's wild to hear as a young HVAC technician. Thanks for sharing.

[@mikafoxx2717]

Ozone problem wasn't invented. A kind reminder that the CFC's were patented things that drove up the cost compared to the older non-patented refrigerants of the 30's like sulphur dioxide or.. r290. They banned those in favor of CFC's because they were safer - according to DuPont's lawyers. Anything they can patent and do. 1234yf is the new patented expensive stuff​. R290 or R600a at least isn't patented and I think R32 is also out of patent. @@GilmerJohn

[@Guyhakverdi]

I HAVE FEW QUESTIONS; 1.WILL THIS REFRIGERANT REQUIRE DIFFERENT COILS? CAN WE USE CURRENTLY MANUFACTURED COILS BY JUST CHANGING PISTONS OR TXVS? ARE THERE PISTON CHARTS AVAILABLE FOR R32? 2. DIESEL EFFECT MEANS EXPLOSIVE, IF SOME INCOMPETENT TECHNICIAN INSTALLS AN AC WITHOUT PULLING A VACUUM AND CONDENSER GETS REALLY DIRTY UNDER A DECK WITH PRESSURES 500-600 (I HAVE SEEN IT MY SELF 650PSI ON MY GAUGES R410 WAS OVERCHARGED.) IMAGINE YOUR KIDS PLAYING NEXT TO IT…. 3. IF R22 HAS ONLY 0.055 GWP AND MUCH LOWER ODP THEN R410A WHAT WAS THE POINT OF PHASING OUT R22? CAN ANYONE EXPLAIN IT ? WHAT AM I MISSING? IS IT POLITICS MONEY OR WHAT? THANK YOU FOR SHARING GREAT VIDEOS!

[@smacleod69]

It is all about money and power. There is nothing noble about these regulation changes. but If you wanna save on cooling. Move to a dry climate and build a "Wind catcher" system in your house and save 1,000's of dollars each year.

[@keithb2696]

Has anybody noticed a lot of 5 to 10 year old evap coils that are leaking. Especially the aluminum coils. Are they going to start building the equipment better?

[@Damien567777]

higher pressure refrigerant (r410/R32) reducing equipment life and then race to the bottom on price means manufacturers compromising on copper quality.

[@smacleod69]

No, manufacturers are not building equipment better. New coils are micro channel.

[@mikafoxx2717]

​@@smacleod69It's for higher efficiency, they need more cleaning at least.. but they did microchannel back then too.

[@smacleod69]

@@mikafoxx2717 Thats the biggest crock in HVAC history. They are not making micro channel for efficiency. Micro channels use less metal to make For the so called carbon foot print crap.

[@GilmerJohn]

Because of the anti-R12 histeria, most consumer aerosol cans use flammable propellants. Even/especially food products often use flammable propellants. Inhalers are much more expensive and dangerous. But that's OK.

[@joez.2794]

I just can't get over the fact we could've skipped R410A altogether, and even by THEIR measure the environment would've been better off. It makes more sense to just go back to R-22 at this point, and we know it.

[@blondestrainger]

@@joez.2794yup that’s what we have been saying for many years

[@fvrrljr]

in my 60's i always took pictures of my work goldsmith / master jeweler 57 yrs experience photovoltaic / solar thermal technician (not NABCEP certified) not necessary for me DIYer in other fields classic cars etc. love doing the work myself, yes i'm a cheap bastard *enjoyed watching this video in it's entirety*

[@Wade6242]

Government redistribution of wealth

[@borshardsd]

Ty for tge content! Our country is in a sad state if Brian has to say "not getting political " while stating facts

[@Hvacrpro123]

I put a flame out with r32

[@redneckways1617]

As an example…. Flour in dust form is an explosive….

[@russoft]

not gonna lie, I was angered by this change and worried about the flammability. But I'm also not an expert in this field so thanks for the education! As a consumer, do I have to worry about lower reliability and higher costs (electricity, refrigerant, equipment) than R-410A? End of the day, that's what I care about

[@smacleod69]

You will have to worry about the reliability. I'm not optimistic at all with the new equipment. Most of the new units are designed using micro channel coils that are known for leaks. make sure you have 10 year part warranty and longest labor warranty possible on new equipment. Every cost is going to be put on the consumer.

[@mikafoxx2717]

​@@smacleod69That's not the refrigerant's fault, that's just shoddy build quality and built to failure tolerance and nothing extra. R290 was used back in the 30's and prior before they argued to ban it in favor of (patented) CFC's. How ironic. Then again, I don't see sulphur dioxide coming back to home units.

[@jk-mm5to]

Can I make an adapter and use it to refill my lighters?

[@threestans9096]

no cuz it wouldnt even ignite.

[@ladas1]

No coz when R32 does burn it produces hydrogen floride - and that is lethal

[@marioa2524]

Looks like the customers expense is going up more which is going to encourage them to do it themselves or look for other ways. You Didn’t mention R290 or R600.

[@narkahtiks3578]

theyre not doing it them selves

[@brycelawmaster3746]

changing refrigerant has nothing to do with the environment and all about money

[@blaub4r]

we are already on A3 :D... welcome to the new world ...

[@jerrylockhart3069]

We have 5 ton system for 25 pounds of refrigerant circuit

[@gerardos846]

😮

[@jerrylockhart3069]

Yeah, they were blocking me in the comments 😅

[@jerrylockhart3069]

So was 134 @ now they’re using to 1234 XYZ

[@EarlHayward]

plus plus two spirit freon

[@cardboardboxification]

Aww the fun of it , have to carry around 25 different bottles that cost $18,000 to do some service work the old days carried three , r-12 r-22 r-503 that cost $90 sumofabitch

[@hazendismukesjr.8319]

😂 What do you think about pressure clamps ??

[@jerrylockhart3069]

Maybe if they made the goddamn coils till last night leak, the 410 like a sieve, we wouldn’t be in this conversation😢😅❤😮

[@kennyjustman933]

can i pull all my 410a out and direcrtly replace with r32?

[@rgb-c5]

No

[@Sctronic209]

Nail plate

[@jasonseifried7192]

Stud guards

[@FROG2000]

EPA says R22 is better than A410? So why not go back to R22? EPA is a joke

[@blondestrainger]

Patents ran out again Really

[@Dingleberry1856]

I converted to propane

[@jamesbooth3360]

FJB and his EPA! They are returning the Southern US back to hard living. Low lifespan equipment and high electric costs are making AC unaffordable.

[@grashoprsmith]

Bro, you lack critical thinking skills. I feel sorry for you

[@jamesbooth3360]

@@grashoprsmith Why don't you explain it to my simple mind?

[@grashoprsmith]

@jamesbooth3360 the same issues existed regardless of who the president was or is.

[@jamesbooth3360]

@grashoprsmith Now, who lacks an objective view of reality? I feel sorry for you.

[@grashoprsmith]

@jamesbooth3360 equipment didn't magically last longer 4 years ago under trumps epa. This stuff was in process under the orange narcissist's epa, too. Corporate greed is the reason stuff doesn't last as long. Couple that with smooth brains like yourself doing bad installs.

[@daveydave9884]

I’m wondering what’s gonna happen when these guys start recharging 410 systems with 32 🥴

[@user-hq4ft7nr3k]

well r410a is 50% r32 so 🤷

[@TerryRGraham]

True Blue vacuum hoses will not reach 10 feet, nor would you want them to.

[@franklong6269]

I am a licensed General Contractor in my state, and I find it stunning how you downplay the complexity of this unnecessary refrigerant change. What you fail to understand is that this will add a huge amount of confusion to the entire HVAC industry, and this confusion will generate significant cost increases to HVAC manufacturers, HVAC contractors and the consumer. I have two engineering degrees, and a civil engineering degree from one of the highest rated universities in the nation. I have taken the time to learn the vocabulary necessary to read and understand climate studies. After reading several of the key climate studies that purport to "prove anthropogenic driven climate change," I have been stunned at the overwhelming amounts of junk science these pro-global-warming "peer reviewed "studies contain. The issue is not if the climate is changing because we can easily prove that the climate has been warming for more than 5000 years after the end of the last ice age. The key question is, is if global warming is caused by man-made emissions of greenhouse gases? To address this question we must first be able to accurately quantify how much greenhouse gas emissions are naturally generated by thousands of sources on earth. We currently are incapable of accurately measuring the aggregate amount of non-man-made global warming gases naturally generated. Without an accurate measurement of this variable, we simply cannot prove that anthropogenic emissions are sufficient in quantity to affect global temperatures to the point we can measure a difference. So, based on hard science metrics, we cannot even prove that man-made greenhouse gas emissions are warming the climate at all. This is especially true because anthropogenic emissions of global warming gases are approximately less than 1% of the total generated naturally by the earth. The point is, we don't have any real scientific proof that these coolant changes will do anything to stop the alleged aggregate warming of the earth. Most scientists agree the earth is warming slightly. But they really don't know how much. And climate scientists cannot prove anthropogenic emissions are fueling global warming. This is important because it is almost certain that these coolant changes will not affect the changes occurring in in climate in any way. They are feel-good delusional requirements put together by Democrat climate change cultists, and there is no hard, verifiable scientific proof to back the Biden Administration's hysteria. So the reality is, all of this added complexity and cost is about as productive as a dog chasing its own tail. It accomplishes nothing to help the planet. But even worse, these increases in HVAC costs hurt the poorest of the poor and the middle class. These red-tape regulatory mandates are a useless waste of scarce resources. So I would suggest that you not act like these are not major changes, because they are. Costs are going to increase by 30% or more, and that DOES hurt every American family!

[@youarethecreator1]

Look up KZbin "Refrigerator of DEH-TH Why are they exx ploh ding ? :SOLVED"

[@jefferyholcombe5189]

EPA=Economy Protection Agency, These standards that supposedly regulate the standards when researched I bet return's little to support their argument. What does show if that when they say something is dangerous and bad it, companies make massive money from the upfit or replacement. When everybody has one there is no reason to keep making more new ones on mass. Then ya see the replacement puts more pollution into the environment then fixing the current ones and or making them last longer.

[@user-ir2zv1xx5q]

Money laundry

[@pearlrival3124]

its just propane guys not gasoline. yes weve had fun with it.

[@kennethbubser9601]

EPA nuclear weapons not acs

[@beachboardfan9544]

I just dont see this being a good idea for in home uses...

[@Kovaction]

I just want to say... If you have a furnace, then the natural gas or propane that burns is WAY more likely to burn then R32 or R454B. Did you know that R410A can also burn? It just happens to not cross the magic line to be A2L. The fear is from regulation. This stuff burns about as well as firewood that's been soaked with water.

[@threestans9096]

YES. thank you! saw a video and a guy explained how poorly it burns. The flames move slower than you can walk.

[@WhatIsYourCard]

Thanks for bringing up the lobbyist talking points for why this change isn’t significant. The “burns like soaked wood” is bullshit. If the concentration reaches its LFL it will ignite like propane. States across the nation do not have the licensing or insurance of quality of work that should be required to install flammable refrigerant in homes.

[@youarethecreator1]

Incorrect. Natural gas isn’t under high pressure where it can explode. Old natural gas furnaces have a draft, newish 20+ years will shut off the gas valve if safety’s fail. Old natural gas commercial boilers have the explosion potential If the regulator is stuck open to the pilot and gas builds up in the heat exchanger. Even then it’s no danger unless some tech like you doesn’t know what he’s doing and puts a bbq lighter in there to light the pilot.

[@Kovaction]

@@youarethecreator1 no sir. It takes the right mix of fuel air and an ignition source... whether the A2L gas is there or not, it just doesn't ignite easily. Sorry. It's extremely unlikely!

[@youarethecreator1]

@@Kovaction Then why do they have sensors to turn off the A2L units if there's a leak? You see now?

[@RETread-xh6fr]

Not to get political but if you don't like all these tyrannical mandates, vote very carefully in November.

[@Timboslicce]

What is wrong with these law makers. Why do we always move backwards when stupid people become engineers.

[@Hvacrpro123]

It’s not really flamible

[@takleung7130]

I think most people that says flammable refrigerant is a bad idea are the DIYers. I can't imagine a properly train hvac tech would be scare of the new refrigerants. I would question the proficiency of any hvac tech that refuse to work on these.

[@ryanehlis426]

Oh yes, the ozone scam 😂 and global warming scam, Ugg

[@narkahtiks3578]

adapter is so annoying

[@RobertTuck-vo8cw]

There is a lot of unfounded hype about the "flammability" of A2Ls. Does everybody use non-sparking tools around natural gas/propane?? Does every tool used when installing a furnace meet the proposed rules for A2Ls?? Do all furnaces require leak detection and alarms? Do gas stoves and gas grills require them?? Gas water heaters? Dryers? Fireplace logs? How many people around the world have been hurt or killed by incidents involving A2Ls burning??? The answer to these questions is NO and NONE.

[@Kovaction]

I have similar thoughts