How To Add Refrigerant To Your Air Conditioner R410A & R22
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- Опубликовано: 20 май 2023
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⚠️ Disclaimer:
This video is for educational purposes. Any and all HVAC repair work is done at your own risk. Before handling any type of refrigerants, an EPA 608 certification is required by law. The DIY HVAC Guy channel is not responsible for any possible damages or injuries caused by the use or misuse of the provided information.
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My Central A/C stopped working and I called a Serviceman. He said the Unit is 30 years old and to get a new one. He didn't even open the cover to do a diagnostic test. They quoted me $11k, plus a permit fee for $400. After watching your videos, I inspected the Starting Capacitor and it had leaked fluid. I bought a new one for $9.86 ,installed it and now I'm freezing in my home. Words cannot describe the feeling when that Compressor kicked on and my Girlfriend called me a Genius. Thank you so much, for what you do in helping out us DIY'ers. My words of gratitude does not come close in appreciation.
That’s so good to hear. Happy my videos helped you out! Cheers
YES!!!
@anthony-ju6qo Cool story bro! Straight 🧢
Same here! AC stopped cooling my home…condenser freezed up in the middle of the summer. Called (2) HVAC companies…both saying “replace the unit!” …“R22 is phased out” … “your system is old” … yeah it is old! But the blower fan comes on, the condenser turns on…something is preventing my house from cooling…I watched HVAC videos and learned A LOT…decided to take apart my air handler and I cleaned our very dirty A-coil underneath…after that my house became a freezer!
HVAC companies can try to get you…always be careful! If you’re capable of doing things your self and save $$ … do it!
😅@@marclaurent4831
I feel like I'm going to HVAC School. I should have done this 40 years ago. So much useful info here. Thank you very much.
Check out our hvac training videos! You can find them here: ruclips.net/channel/UC2w60mhlxFmAhoi2oSDcEngjoin
Cheers
I have my EPA 608 Cert. and recently joined our HVAC group. Appreciate the information you provide. Im 62 years old and never stop learning. Learning helps the mind stay young!!!
Abstract correct...
Bingo!! I’m 58 and never kept a job where I wasn’t learning. I toughed it out when I was younger, but I’m worth the $$$$ now.
How, and where do you get your license
You don’t need the class. I studied for the test on my own and was easily able to pass the test. Beyond simple.
Yes same here, I was just making the point that if someone was concerned about not passing, they could pay the 300 and it covers everything on the test. Thanks for the input!
what is the website to take the test?
Can you give me some links to study from, I would like to the test as well.
@@markpoposki google test questions. They are plentiful. There is one thin book or pamphlet that has everything you need to know for the test. I don’t remember where I got it.
@@meseahunt you could take the test at an AC store. There was one here that did it. Not sure anymore that was 4 years ago before Covid.
Keep up the good work. My elderly neighbors were about to be scammed out of thousands for a replacement unit. Turns out he had be using the incorrect size filter and their evap coil was severely clogged. A Sunday afternoon and $30 in supplies had them back in business.
Saved the day!!! Nine work.
How does charging a system correct a clogged evap coil?
@@jefflemberg645 LOL right
@@jefflemberg645 I deduce that the filter was smaller than it needs to be, and a "Sunday afternoon" meant he cleared the clog.
" their evap coil was severely clogged" the condenser or the outside heat exchange fins?
Glad you showed to purge the air out of the hoses to avoid non condesibles getting into the system
EPA free study all over RUclips.. Got mine studying for 2weeks !
Thank you sir, the world needs more people like you, giving is a blessing to many and at the same time is creating blessings for you.
I'm an electrician with a motor rewind shop. I want thank you and congratulations on what your doing with your videos. You are a very good teacher. Maybe I'll get my HVAC license also just because of you, thank you.
Nice explanation on the meaning of the temp scales on the gauges for the home owner,
I’ve watched so many videos on this topic and by far my man here explains it the best that relates to home owners. I would really like to buy this guy a beer.
Thanks bro! That means a lot if you’re ever in salt lake I’ll take you up on that 🤘🏼
@@diyhvacguy
Trent and Allie territory!
First beer on me!
Kudos 🎉
Thank you for the update on this. Not only will I be studying on my own to pass the test but I also will be purchasing the gauges and the refrigerant as soon as winter hits that way it's cheaper. God Bless be safe.
I had to get my EPA for my job but I knew nothing about working on AC hvac, but it comes up new properties sometimes, and I found out I love troubleshooting systems, getting pretty good at it. then I ended up on an old property, and I had to get more knowledge. spent a ton on tools now i’m set up. and i look forward to ac/ heat calls
Thank you !! I just paid for a new unit, but what you just showed me is great, I'll keep my unit clean as you showed me how on other videos, THANK YOU!!!
Great video, thanks, you just saved me a expensive service call. The A/C guy wanted $600 a pound for R22 and I bought a 5 pound can from Ability for $249.00.
Nice, what did the gauges to put it in cost? And how did you repair the leak? What was the price for those tools to repair the leak? ( welding or flaring block)
I am hooked. You are my new youtube guy for hvac. I am a certified mechanic and do auto a/c, so your easy to understand videos are making it a cinch crossover for me since I already have a a/c background and try to learn more about hvac everyday. My gauge set is even R-134a/ R-22 set so I can use them on my house condenser as I am preparing to do my first house hook up with them as I think my R-22 is low. Please make more of these hook up and read and add videos on house condensers. Subscribed and looking at buying hvac tools on your affiliate links as I type this.
Great video, especially the disconnect procedure to preserve refrigerant.
Really appreciate your input on adding Freon to my unit. It will be very helpful to me. I have been into industrial gases for 42 years. Did not know how to do a bigger unit like I have. You made it very simple. Thanks R.Cunningham
if you have to add refrigerant that means you most likely have a leak so all you're doing is causing more damage to the ozone ... fix the leak.
A good starter video. The challenge in a DYI situation might be being able to find a leak. If it is locating in the evaporator coil, (inside the home) it might be difficult to find. Using a high quality filter with a high rating will keep your evaporator coil and air ducts clean. Also, there might be a need to empty the system of a complete charge and and replace the compressor oil which probably would require a professional or more experience. Thanks for the information.
Thank you for putting this together it's a great video. One item that seems to be really important for this is the leak detection. You mention it it kind of jumped over it, don't know if you did a video on it. That is absolutely critical before you add new freon.
Otherwise your viewers are throwing good money after bad.
Looking forward to leak detection DIY tips
Thanks again
Even my brother said what I was thinking “he’s good” and you are and your very much appreciated
I’ve done a lot of studying but there’s always something that I think having your experience or explanation will help I don’t want to waste the expensive 410A
Hey good video was very well explained I started doing HVAC around a 4 yrs now it's a good trade to get into just have to do the job the correct way and you will succeed
I’m an hvacr student who is about to close his first year in six months. These next coming up months are going to be spent in a lab. Anyways your video is nicely made. I got my epa in class and i have been asked to install refrigerant by a student and even though I was taking the classes I knew not even where to begin In doing anything. Now with your help it’s a win-win. Like and commented. Thank you
I got worked for like $600 just to put a little R-22 in my system which was working but he said it needed it. He didn't weigh the refrigerant he added and just eyeballed it and sent the bill. Never said what it would cost until he sent the bill. I almost lost it. Whole process took him under 10 minutes and the cooling felt just the same as it did before he topped it off. That was when I decided to buy a fat tank of R-22 and a gauge set just incase it ever needs topped again. I also ran through some of that sealant stuff just incase there was a leak since he never checked for leaks.
All very well done. Thanks for being there for us!!
I decided to start working on my home AC after I got charged $350.00 dollars to install 1/2lb of R22 about 20 years ago. I said to myself, "Dude I'm Avionics Technician working on Fighter Aircraft Electronics and work on cars as a hobby. How hard can this BE!" I didn't get my license but I watched a ton of video's and have repaired a ton of cars with R134A since then, including complete rebuilds of car HVAC the systems to learn about AC Systems. I then purchased a HVAC maintenance manual and studied it. Then before I started working on the home AC I have a friend who used to own his own HVAC business and always consulted with him before I broke into the lines or did any maintenance with my diagnosis theory and plans/procedures of repairs. He always gave me a thumbs up and would also remind me of things to look out for and how to overcome problems if I ran into any. He was kind enough to purchase four 2lb bottles for me, of course I paid for them. With those bottles I kept my Goodman running since 1996 and it just went out last year in 2022, a 26 year run on that unit. So I put in another NOS R22 Goodman I've had sitting at the house since 2015 waiting for the other unit to go out after our home flooded in Katrina.
Thanks for sharing bro!
Be careful about posting that you handled refrigerant without a license. Someone was actually convicted for reselling old refrigerant in the us recently, and even though you're unlikely to be arrested, if the wrong person finds out it can be a hefty fine.
@@andrewkuebler4335I believe that applies to working on a industrial, business or someones equipment that doesn't belong to you. It also depends on if it was a Licensed Refrigerant like R22, R410a etc, but not R134A. It's mine understanding you are allowed to repair you home equipment, but not someone else's, or in a professional setting, which does require a license. I'll have to check into that though to be safe on the regs. Thanks for looking out for me, and if you find a link to the article I'd like to read and study it. Best Wishes & Blessings. Keith Noneya PS I don't resell any refrigerants, especially any that requires a license, I'm not a business man, just a home owner. What little I did have, was a 16oz can and I used to fix my AC, that unit has long since been replaced by a professional tech last year and is long gone, the coil was really old, march of 1996 then it rotted out and couldn't be repaired. Again thanks for looking out for me. Best Wishes & Blessings. Keith
😂😂😂😂😂😂😂😂😂
I started doing hvac work in 2010. Made my way over to the Controls side around 2019. It’s definitely been awhile, I feel as though my skills have perished but you’re videos are very informative. Keep up the good work.
Excellent basic video on adding refrigerant to an A/C system. I had a home warranty A/C tech come by who did not have low loss fittings & just vented the refrigerant in the hoses into the atmosphere. I am currently take a HVAC course so that I can service my own HVAC unit.
We also have an hvac course under our membership plan! It’s $24.99/month and I’m sure you would leave A TON from the course.
Cheers
Awesome video! Just what I was looking for. Keep making more content, you are really good at explaining.
first time seeing those low loss connectors, fantastic! thanky
bought a tank off eBay, and simply had to check a box.
Surprisingly easy. All the other parts are easily acquired off
You should do a video on using a micro leak additive. I don't do this professionally but have used Easy Seal Ultimate with the UV dye on about a dozen systems that would get low on gas a few weeks after topping off with good results. Including on one of my older 22 systems a few years ago.
Thank you so much. Just the video I needed to see. Plus now I have a place to get refrigerant from too. This video will help a lot of people.
Awesome video for DIY! You do such a great job of explaining this task.
Years ago (I'm older) I would use a little tap fitting on high side shrader valve and, suck it back with low side line shrader valve.
Your low loss lines do a much better job!
Have a great day Bill
Your definitely going to piss off the ol "Markup Hustlers".
There are many many people who don’t even know this information exists and will happily pay their markup price. Plenty of paying customers to go around 🤘🏼
@@diyhvacguy lol
Thank you for a complete and professional introduction to this topic. Thumbs up and saved to favorites!
Great job! You just saved me $400. I have a very small leak that takes a year or more to lose 3 lbs. My HVAC pirate charges that much for the service.
That’s a bad leak if you’re losing that much per year
Price of 410A is going up too. Since it is discontinued. Better fix the leak. 4 ton system use about 12 lb I think. So that mean could be 25% lost.
This is a great video that gives a person a good idea about what it takes to charge your AC. I recommend watching it before you have your qualified AC tech out. My Tech has an App on his Tablet that gives him tons of data specifically about my system. Including temperature/airflow probes so he can balance the system. If you are low on freon you do have a leak. I DIYed my new Central AC system 3 years ago. And had my AC Tech finish off the last 2 hours of the install and startup.
Interesting... So what all did the tech have to finish that you hadn't done? How much was the equipment that you purchased and tonnage?
Were you able to find the leak? 3 years later still are you able to see if there is a leak with lowered pressure?
Excellent video...I've been EPA certified since they first required it...Yeah, I'm that old and still running service...Mostly word of mouth anymore, and for older people that have been lied to by the gougers selling units...They're out there...Anyway, thanks for the video...Very common sense and well done.
Nice, that actually worked for me. Thanks for your help and knowledge.
Great video for basic addition of refrigerant.
Great Job Sir. I am a new tech and you made this noticeably clear. My first-time hearing about Ability Refrigerant. What a great saving you can gain. Thanks for sharing your knowledge and information.
Great instructional. One thing to note. When you attach hoses to line set and purge air, make sure to purge air from hoses before you flip tank. Just like he did. This way there's less refrigerant loss. Vapor vs liquid.
Do these "low flow" fittings have a check valve in them? Can you just buy the lines and retrofit an older set a gauges?
@@jteddy11 you can just get the low loss fittings and install them onto hoses. They should at least be used on high side line if not low and hi.
@@aubrey5939 Thank you, I typed low flow, sorry, thanks for the info on low loss fittings
Thank you so much! I'm researching this because of a seemingly extraordinary price for a service. I see you have a Patreon and I may be a new subscriber VERY soon. The tools for checking leaks and repairing myself are a fraction of the cost of what I was quoted (details below).
Thanks again!
Abbreviated version: 20 y.o., 5-Ton, R22 System in 2200 sq ft home. Freezing lines on inside unit and no cold air blowing. Tech measured low levels (Low 45.1 Psig / High 164.0 Psig). Quoted flat $800 for leak detection service. Quoted R22 @ $1000/lb and said recharging the system would run about $8K in refrigerant and strongly recommended replacing the entire system (Rouge estimate $20k).
I have what may be a naive question. I had a tech come out to the house because (against my wishes) the lady of the house called the HVAC company. I was in between my troubleshooting and had to stop to go to work. When I got home, the tech told me the news was not good. The AC was 15 years old and was dead now. Admitted there was no leak on our R22 system, but it still really needs to be replaced. Suggested a full new install for 10k. He said that because I cleaned the outside coils, it probably stressed the system and killed it. He led me to believe the scroll compressor was done for and the root cause of the AC freeze up. Took apart the shroud on the N coil above the furnace and it was absolutely packed with husky fur(something to think about when choosing a dog). I cleaned the evap coils to the best of my ability, straightened as many fins as possible with a de-shedding brush, and closed her up. Added fresh foil tape to every seam. That was yesterday. Today, the volume of air moving from the vents is substantially greater, and the ac is cooling without freezing.
So I guess my question is, can this just be an honest mistake by the tech, an unscrupulous profit hunt, or somewhere in between? It was an old system after all. Just frustrating that this could have been a huge expense.
Excellent how-to. Thanks for demystifying how HVAC works.
All Your Videos are Great! Informative and Fun to Watch! Thanks for taking the time to help us out! Subscribed!
Thanks so much!
Good video man! I sent it to my maintenance team at the apartments I’m in charge of. Very helpful for these techs that are just learning how to do this! Thanks
Make sure you share my training videos with them. They can be found at the channel homepage you’ll see a join button and you can find my training videos there. Cheers
Thank you for your great information. You're the best friend for the average DIY and homeowners
Don’t try this at home. You will slug your compressor and need a tech anyway
@bills6946 Most of DIY will not try it, but knowledge is power. You'll never know when you're gonna need to do it yourself
Makes me field line I’m out in the field wit you, thank you for the support and knowledge.
The piston version control you showed is called an expansion valve. I haven’t done a/c in a very long time, but I did take a test when they started to restrict R-12. You stated once you have the license it’s good forever, I guess I will have to check that out. But for sure it the refrigerant is low something is seeping.
VERY important information and well-done DIY HVAC guy! Kudos to U indeed!
Ahh, so that's how to capture residual hose refrigerant at the end of procedure. I've been screwing that up when recharging my car's ac. THANKS!
Thanks so much for sharing your knowledge we us, I have learned so much from you as a diy guy in maintaining my hvac system , I now have several spare parts on-hand in case of a breakdown , capacitors, vacuum switch, transformer, hot surface ignitor, condenser contactor !
Awesome! Thanks for the feedback!
410 A is a blend refrigerant. You failed to mention that with refrigerant leaks on 410A you should remove and replace the refrigerant. The refrigerant blend separates when idle and the blend will be altered. R22 has been outlawed, no longer made. 410A is also being taken off the market. EPA regulations require low loss fittings. Lastly the EPA refrigerant certificate does not cover all refrigerant. The current trend is going to propane based blends, not a fan of them. Sooner or later there will be a large leak near a source of ignition.
Omg you are awesome. Thank you so much for doing this. I'm having AC Issues and this has helped. Wish you were here in Florida
Great video, but I'm going to pick at a couple things as an HVAC tech. I know you said there are other factors into charging than what was already said, and I'm also glad you talked about the EPA 608 certification.
@ 4:07, You purged the line of air from the refrigerant can, but did not purge with liquid at least on video. If this was R22, it would be fine because R22 is a zeotropic liquid (meaning one component) and you would be able to charge an R22 system with gas or liquid. R410A is an azeotropic refrigerant (meaning two or more components) and can only be charged with liquid (or a flasher nowadays). You must purge with liquid refrigerant (burp the line unit liquid ref comes out at the manifold while the can is upside down), otherwise you may unequally add the refrigerant. Probably would not hurt the system unless charged with a lot of gas instead of liquid, but it's a bad practice.
Companies charge a lot of money for the refrigerant because it costs a lot of money for us too. 25 lbs. Virgin R22 goes for $1800-2200 company cost, R410A about $300-600 for 25 pounds. Legit, licensed companies charge a lot because it takes a lot for us to know how to do it right plus business expenses. Thank your EPA and the Montreal Protocol for the giant money scheme! Yes they are 30 pound drums, subtract the tank weight and you get roughly 25.
Both Zeotropic and Azeotropic are refrigerant blends of two or more refrigerants. Zeotropic means the boiling point and dew point are different between the refrigerants separating them in vapor, known as glide, the vapor of the refrigerants are no longer mixed, forming separate layers Fractionation, and won't charge in the right percentages, so it needs to be charged into the system in liquid and flashed to avoid getting liquid into the compressor. Example 407c (23% R-32, 25% R-125, 52% R-134a). Azeotropic means the refrigerants have the same boiling and dew points. All blended refrigerants should be added to the system in liquid.
Also, R-22 even at $2,200/30 = $73 a pound your cost. So, that's a nice markup added to the service charge. I just had a tech try to charge me for R-407c $104 first lb and $259 each additional. The best part he was going to add it to a unmodified R-22 system. Not to mention he tried to hook and crook me on an evap coil (Over $3,314), which I just recently cleaned he said it was rusty.
@@dougshaffer5524 Why was he adding refrigerant though? Where did it go? Did it evaporate? Maybe the evap coil that you cleaned was leaking..... Rusty coils are most common cause of leaks. It's a hook and crook nowadays to fix things because people don't want to replace them haha. How old is your car? U put bandaids on that too?
@@mackenzieschoenfeld4810 It was a slow leak on the suction line service port Schrader valve. A squirrel chewed through the cap and I had to be patient with the soap and water. He claimed an evap coil leak, though it was his second pass. The coil has light rust, which really isn't reacting with the copper lines. I've seen evap coils, when they reach the point of failure, usually the oil is a dead giveaway. I only called in for help, because a storm knocked some trees down and I had to focus on getting that cleared up. As to that last dig, I must have hit close to home. I make good money thanks to piss poor installs done by "pros" doing half assed work. Keep on keeping on, it keeps me busy
I just looked at 2 websites and R-22 goes for about $975 for 30lbs. Where are these $1800-2200 numbers coming from.
Nice videos ! Great job explaining the details .
This is like the car top up kit - awesome.
I've been watching a bunch of y our videos. You have earned my subscription!! I've been absorbing your knowledge like a sponge!! Thank you so much for taking the time to make these videos.
Welcome aboard!
Don't forget to mention checking the superheat of the system. Simply take your suction line temperature, after the system is running for 15 minutes, and subtract your guage temperature and that will give you your superheat on an acurator metering device. A superheat of 12 is usually good on a a\c system. Overcharging the system will damage the compressor by slugging it with refrigerant.
I just ordered one of those 2 lb bottles and it was here in 3 days! Nice video, you make it look easy!
Did you figure out where the leak is?
@@Trust_but_Verifywhere was the leak?! I have a leak and I don’t know what to do!! Ahhh!!!!
@@Trust_but_Verify Not yet, but I injected the fluorescent dye and sealer I picked up from Amazon, so far it has been un-heating the house down to 71 degrees and the condenser was cycling, blowing 56 degree cold from a vent above the evaporator.
But now yesterday I came home and the house was warm, cool was on, went out back to the condenser unit and found the contactor switch chattering......ordered a new one and a capacitor off Amazon. Stay tuned for updates.
@@fastrat37 Did you use any detector to see if fluorescent dye got leaked out?
I did use a UV light and have not seen any sign yet of a leak.
Now the system has stopped cooling……went outside and heard/found the contactor chattering!
I had the system installed in 2003 so time and use will will inevitably end up with problems.
Is it time for a new contactor and capacitor?
Thank you for your interest and any advice, I’m capable of using a DVOM for checking voltages/resistance/continuity measurements and replacing electrical items like a contactor and or capacitor.
Great job explaining
Thanks for making this video dude this was exactly what I was looking for 👍
Absolutley wonderful and informative video. I will be getting my EPA Certification. Wonderful video as always!👍🏽
Don’t need it to buy it
Keep up good work. I am experiencing a bunch of crooks in AC business working for HD and Costco. Thanks
Now you have all the knowledge to repair your own ac !! Just put gas in it!
Appreciate the vid bud. Probably going to go for that EPA cert. Will be looking forward to the video.
Thank you for this ! Very helpful 👍
Best and simplist explanation ever, Thanks !!
great video! i appreciate your knowledge and in depth explanations , demonstrating that things dont need to be dumbed down if they can just be explained clearly- even if the aside explanation is subject of another video. I wish I worked with you!
Thank you so much ….Man you save my life with this type of weather , I fallow your advice and we are back in business. Thanks again, God bless
Sweet! Glad to hear it 👊🏼
Dave. Thanks for another great video!
Great information! Thanks so much Dave !
Just wonderful and clear explanation
Tthanks so much for sharing your knowledge! Very helpful!
Great Video. Thank you for sharing
That was excellently explained
Very informative video. Thank you for sharing. Greetings from Bavaria/Germany where my HVAC is actually used as a heater because the outside temperature is 12°F 🥶🥶🥶🥶
i just got a stooooopid quote for a new hvac system....
so im teaching myself to do it myself. your videos are the best ive seen so far.
the guy that came out was super cool but he said my A err Y coil is corroded and needs replaced and since its R22 the outside unit needs replaced too.... but he was able to top off the R22 and get it cooling again. no promises he said but should getchya thru the summer. so hopefully i have like 6 to 8 months to save for system from dircect hvac and install it myself.... hi5 good luck i know .. but im going for it and hope to save myself thousands and learn a new skill.
Awesome, when the time comes to replace it make sure and check out our Patreon membership over at Patreon.com/diyhvacguy where we will give you one on one support during the replacement as well as help getting the full 10 year warranty on your equipment! Cheers man
nice of you to share!!!👍👍👌
I did a nine month advanced course. I am a electro mechanical and computer tech of 20 years. Hvac was easy for me. However, I say this. If you pick things up easily, go ahead and pass the test on your own but the school kids are ahead of you with references and experienced teachers. My personal list has three retiring Master service technician with over a century of combined experience.
Thanks again for the great information.
Thanks for the video as it will help me in the future.
Great video tutorial very informative ❤ thank you for sharing your knowledge ♥️🇵🇭 more power to you, and always keep safe at work.😊
Really good informative video thanks for sharing this tips 👍
Dude. Thank you!
I am a 57 yr old, retired computer engineer that fixes everything in a house. Everything. Or real close.
However, having refridgerants and HVAC parts on lock-down where normal citizens cannot have them is very wrong . That has allowed runaway pricing on new installs - and even compressor repairs.
I am getting that Refridge license!
Thank you for the info, and I must say that your videos are fantastic!
At 57, I am not going to do 5 yrs apprenticeship to be able to buy and do everything. I'm not opening a business. I just have two properties and 4 HVAC and a mini to maintain. I cannot afford to pay $12K to replace each one. That is insane.
Your videos have helped me maintain and repair reasonably good systems well beyond the point that I would have had to shell out $10k+ per unit. ($3500 for a mini).
Awesome glad they have been helpful for ya 👍🏼
Nice video an well explained how to simply handle this
Outstanding video keep up the good work
Thanks for
Showing us how to top up.
Love your videos. Please keep up the great content.
Great vid- informative and easy to understand. Thank you.
I've always wondered about this. Thanks for your vids!
Very well done.
I like that you wore gloves. Good video
Great video and wonderful information
This makes me want to get HVAC certified! Looks like a fulfilling career. I am more of a computer nerd. However, this would be a great technical career for me I think.
This was really informative.
Very nice video sure learned alot!