HVAC Videos For Beginners
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- čas přidán 19. 04. 2022
- HVAC videos for beginners. HVAC troubleshooting tips. AC is not cooling but the fan is running. Two apartment air conditioners are not cooling properly.
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#propertymanagement #maintenancetechnician #multifamilyhousing #apartmentmaintenance #handyman #Tallahassee - Zábava
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If you'd like to support the channel, you can do so by shopping for tools or whatever you need on AMAZON at no extra cost to you through this link,
amzn.to/3sLjyNv
If I've provided any value for you and you'd like to donate $1.00 or more into my online tip jar, you can do so through this link, (all cards accepted)
squareup.com/store/dirty-maintenance-nation
This page contains affiliate links, which means that if you click on the link and make a purchase, I’ll receive a small commission at no extra cost to you. Lex Vance is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon .com
I'm HVAC tech with 25 years experience, the double up dryers one should be removed. It really taxes the compressor just like a kinked line with the extra restrictions of the second dryer. It can cause the liquid to start to flash to gas just like a metering device and not feed the txv with a solid collum if liquid causing all kinds of problems. IMHO I would remove the one inside the unit, that way if you have to change the dryer you can just pump down the unit instead of having to recover it. I know you like to install them in factory location but that why I always relocate them, it's a time and labor saver in the future. Hope this helps you out. You do a great job I don't want you to think I'm criticizing you about dryer location just trying to help you out. Love your content
Right on Dane! I agree. You're right about the restrictions and the easy pump down in the future. Thank you so much for watching!
I’ve been warehousing for 10 years and lately hvac has been catching my attention this is interesting stuff right here !
Thank you so much for watching!
Get into it brother
I’ve been in a warehouse the last 6 years and I start HVAC on Monday. Super excited
i’m 21 just started in a hvac school actually this shit will change your life brother
I’m thinking getting into this but I’m nervous
After a stressful day that blunt roaster might be a good ole buddy to have 😂🤣😂 ... Thx for sharing ... You make me laugh ...
👍😆👍 Felt like I was in one of those old Cheech and Chong movies I use to watch. 🤣 Good to hear from you Eddy!
Thanks for the tip on those hard starts. I have the same Goodman condensers at my current property so it’s good to know that those hard starts tend to trip the breaker when they go bad.
Thank you so much for watching Abraham!
If only I wasn't stuck in a meeting.. I cannot wait to watch. Usually HVAC as you know is easy... It's does it cycle on running both indoor and outdoor fans and the compressor then whether or not all the refrigerant leaked out. It's a mess fixing a leak though ripping out an EVAP coil on their third floor...it seems they never pump down especially the rotary compressor units which run on a prayer and a hard start just to get them in the mood to run.
Right on Justin! Thank you so much for watching!
I’m going into hvac soon and I’m loving this.
Thank you so much for watching!
Well worth it I just recently jumped into the refrigeration field
Is hvac hard
Not when you get used to it and learn it. It is at first but you have to stay with it and be disciplined.
That was majorly helpful!!! Thank you
You're welcome! Thank you so much for watching Generation Testimony!
I'm taking a h vacation class just starting...this gives me a good idea 💡 what to expect thanks 😊 🙃 🙂 😅 👍🏾
Thank you so much for watching Cleft!
Great video bro keep them coming, I work on the property and I sometimes have to close out work orders and the ones that I look at is the commons that the other maintenance guys report AC unit is ice up and all they do is add refrigerant don’t even look for leaks this is sad and don’t even know the superheat or sub cooling and we are talking about the senior tech🧰 at that 🤦♂️
Right on! Thank you so much for watching Solo Tech!
Lol you kept talking about that blunt makes us wonder why you didn't film inside 🤣🤣
The guy was posted up on the couch chiefing away. 😆
I won’t beat a dead horse on this one. Yep good stuff as usual my friend!!
Thank you so much for watching Jayson!
Lex another informative video
Thank you so much for watching Robert!
Hello Lex, I agree two filter dryers are one too many. Would like to hear from the tech that installed new compressor. Your content is refreshing, many thanks Lex!
Thank you so much for watching Breeze!
screw that call n get ur money back tell them take mickymouse back to Florida with their transgender education they try to indoctrate
2 filter driers is also twice the restriction in the head pressure. It’s going to cause more w/t on compressor.
I heard it's bad b/c it Acts as a metering device (txv)
Look on the back of that electrical panel on the condenser. It'll tell you the design subcool/temperature charge correlation with ambient and indoor temperatures. Normally Apt ac's are oversized anyways so doesn't have to be perfect unless you're working on 3rd floor end unit. Unit with a high load that is.
Right on TechFive! Good to hear from you, man!
the hvac guy said that the maintenance guy won't know they use ryobi drills 😂.. two filter are better then one 😂... but all joke aside thank you for all your great video big fan of yours.. I watched your cpo video. and sure enough I passed it the guys I knew I didn't sit with them 😂..
👍😆👍 Nice! Way to go Rudy!
Bro keep posting Im learning from ya
Thank you so much for watching!
My guess on the high SH would be an extra long lineset since it's apts. and you have multiple floors and long runs.
So true! Thank you so much for watching Sam!
You should be good on the superheat thing since it's a txv I was always taught its the subcool that matters you would pay more attention to superheat if it was a piston . Superheat for piston subcool for txv is my rule at least .
Right on Alex! Good to hear from you, man!
Yes subcool for txv but super heat is still very important even on txv system . Still must know super heat to ensure the txv is metering correctly
@@LexVance thanks lex you too buddy
Another great video Lex, thanks you! My 2 main thoughts after watching this video are this:
A: The fact that those units come from the factory with a hard start kit to me is a big red flag of poor engineering. I took hvac courses back in the early 2000’s and I don’t ever remember a situation with a hard start kit being installed at the factory, seemed like it was always an option to be installed in the field after if a compressor for being troublesome and popping breakers
B: Correct me if I’m wrong but with all the problems you are seeing on those units, how much research did the apartment complex honestly do before deciding to install those over the entire property when it was built? So sad that we are in the day and age where the lowest bidder is always what wins.
Anyways, just a few thoughts I had, keep up the great vids!
Thank you so much for watching Steve!
I’m thinking on getting into this I hope I do good
Thank you so much for watching!
Thanks for sharing the video. I hope you don’t have to change out those txv and all those dryers. Good job. Safe safe out there.
Good to hear from you Phillip!
Can you make a video about the phase out of 410 and new freon that will replace it
Will do TexMex! I've been watching and keeping my feelers out on this. Hopefully someone who works in actual HVAC can help you out more on this here in the comment section. Thank you so much for watching!
If your line set goes underground your superheat may be high if you check it outside. Have you checked your true superheat upstairs at the air handler?
No, I'll start doing that as the line set does go underground. Great idea Carlos! Thank you!
True your SH should depend on length of line set as well as if coils are clean, I would never dump extra refrigerant in without making sure you got proper air flow. Think about it, what is more likely event to cause coils to ice up ? A leak in a sealed unit which is not subject to wear on lines since they stationary ? Or coils getting dirty over time which increases the pressures since they raising temperature from restricted air flow ? In my 10-12 years experience I have solved the problem by cleaning coils 60% of time, the othe 40% is refrigerant leaks either shoddy installs or units 15-20 years old.
Working hospitality maintenance…. Smell the reefer all day everyday in the hotel. Especially in a larger complex.
👍😆👍 It was like Cheech and Chongs place up in there. Good to hear from you Danny!
I straight pipe the filter dryer inside with copper and put a new one on the outside of condenser
I like that! Thank you so much for watching manino!
Your saying you can never get the superheat below 20? Even by adding charge? Either semi stop up txv, undersize TXVs or sometimes there's strainers b4 the TxV those could be plugged due to being a appartment complex installs go really fast and not much care goes into it, thoes be my guesses
I can try to add a little more refrigerant and see. I've never tried that. The subcool would be closer to 20 though. That don't seem right either. Thank you so much for watching Edward!
@@LexVance yes your right the subcool would increase. As long as superheat is around 5-20 with a txv and your close to your subcooling I say your good. But yeah a 28 superheat with the subcool spoton , indicates a restriction. Filter dryer ,txv , strainer ECT could be the issue. Check to see if you have more than 3 degrees across filter dryer that would indicate restrictive dryer
@@edwardgarza5104 Right on, thank you Edward!
@@edwardgarza5104 I just wonder if all the factory installed filter dryers are restricted or semirestricted seems like problems started like 2-3 years into them being in operation. I think I would remove the factory installed filter dryer the contractor left in the unit and replace the one the contractor put outside and see what your superheat is then. Maybe bad dryers are causing the evap coils to go bad prematurely. Just thinking out loud. You could also check the temp difference on both the factory installed filter dryer and the filter dryer the contractor installed that would be interesting.
True not just bad apartment installations but how many apts do techs clean BOTH coils ? Most techs rather clean outdoor coils and give extra shot of refrigerant. Granted in some apt setups it’s harder to get to indoor coils unless there is mechanical closet but restriction that close to TXV could be your issue.
So would you recommend an HVAC school that offers classrooms to simulate the work or online? My only toss up is the time difference between in person and online in person is 11 months and online at six or less
Although I've never been to an HVAC class, I'd like in person for hands-on experience. I learn better by doing. Thank you so much for watching!
I've been repairing electrical/electronics for over 40 years. I Now teach AIRC technology. Looks like you have some skills! The only thing I would recommend is for you to reference the installation and parts manual as opposed to using the procedures used in the past. The industry is changing fast!
The capacitor that was changed out (30/5mfd), may have been the correct cap for the rotary compressor. The only way to know for sure is to reference the parts manual instead of : "all rotary compressors comes with a 45 mfd"! That's just not true! It's possible this one did; however, you don't want to be the goofball replacing a cap with the wrong value. The only way to know for sure is by referring the parts manual with the model number of the unit.
Also, you don't mention what subcooling the unit calls for. If it called for 8 +/-1, the unit was overcharged because it was running at 12 degrees subcooling. It was 3 degrees off. This information you will find in the installation manual, service manual, or data plate.
This is why its very important to reference the manuals. You may have been stressing the super heat when all along there was nothing wrong with it. Old Industry standards are changing! Read the manuals! Don't assume all units and/or brands work the same. Once you have read the manuals x many times, you won't need them anymore.
Good luck!
Thank you so much for watching!
Smoke em if ya got em. 😆
👍😆👍 Good to hear from you cutum!
He's chiefing a blunt 😂😂
👍😆👍 Thank you so much for watching!
I want too learn hvac but no jobs hire without experience
I got in by starting out on student housing properties. They'll hire anyone. If you have a college around you, Google student housing and go apply at those properties.
lex i have a goodman heat pump i have therostat set a 67 and temp coming out of the vents is 84 is that normal thank you
Either heat strips are stuck on and you'll need to replace the sequencer or your reversing valve is stuck and will need to be replaced. Or, the 24v orange wire is not getting power. The orange wire has to have power for cooling.
Do you have a link for purchasing that multimeter? Tia
Click on the Amazon link below and type in Craftsman multimeter. They may not make it anymore. Fieldpiece is a great meter too. Just look at the picture and make sure it has the MFD setting. That's the microfarads setting you'll use to test capacitors. Thank you so much for watching Adam!
The last ac unite got big leaks, can you use LEAK SAVER to save it?
A guy on CZcams put some Leak Stopper in a pickle jar and let it sit. It turned into sludge. Almost a hard wax. I don't trust that stuff and don't want it to ruin the system. So, I just fix it the right way. Thank you so much for watching GA!
I was taught that the subcool should be between 8-12, and the super heat should match. Is that true?
Yes, however getting them to match isn't always easy. Just try and get them close. Some equipment in the real world just can't do it. The instructors equipment in a class room can do it easily. But, come out in the real world where things are mix matched and not installed correctly and see if an instructor can do that. I highly doubt it. Thank you so much for watching!
The old filter could be a restriction later on or very soon. That is not good for the new compressor...
So true! Thank you so much for watching Louie!
Hey where did you do your training
I've never had training or went to school. I watched HVAC videos on CZcams and then just got out there on property and figured it out. I made a lot of mistakes but mistakes are our greatest teachers. Mistakes breed experience and experience breeds wisdom. Thank you so much for watching!
Do you ever try adding leak seal before you replace coil?
No, there was a guy on CZcams who put that stuff in a pickle jar and let it sit for a week. It turned into hard sludge. I'm scared it'll wreck the whole system. Thank you so much for watching Parker!
Did you put a bigger hard start on then?
No, same size.
I need to get the digital gauge. Or have the company buy one lol
Yep! Have your company get them. 👍 Thank you so much for watching Jean!
i change the fan motor and the capacitor my AC still won't run what could be ? the contactor ?
It could be. I would need to be there to see if its getting voltage. It needs high and low voltage. 240 and 24 volts. I would need to be there with my volt meter. Thank you so much for watching Alex!
Factory-installed filter driers inside condensing units should be banned. I'm not as riled up about the filter being installed outdoors but almost everyone says having it as close to the expansion device as possible to prevent any potential moisture from flashing into ice right at the TXV/piston.
At least that is my opinion.
Right on, good to hear from you Big N8!
Filter dryers or accumulators are found in the engine bay on every vehicle exposed to extreme temperatures. They seem to do alright.
Man I’m in Texas it’s getting hot and my ac not cooling let me see if replacing the capacitor with a 45/5 will work . I’ve already cleaned it out .
I hope it all works out for you Anthony! 🤞
@@LexVance so the one I removed says 35/30 I bought the 35/30 440v replaced it and now the fan isn’t running outside should i try the 45/5 ? Or that a hazard ?
@@therealanthony4978 You may have a bad fan motor or a wire is misplaced.
@@LexVance so I had the ac guy come out and it just needed free on I forgot to turn the breaker back on that’s why the fan wasn’t spinning 😵💫 hahahaha thanks for your help man !
That's what happened overworked start kit
Thank you so much for watching John!
So I see in this vid Fieldpeice gauges and not testo. Why? Why did you buy fieldpiece?
I own my own set of Testo gauges. The Fieldpiece are the propertys and I use them to prevent wear and tear on my Testos. Thank you so much for watching Robert!
@@LexVance Smart man.
The old filter drier should have been replaced
So true! Thank you so much for watching Ehren!
What are the numbers your refering to?
Microfarads
Hi, quick question I found you on a CZcams search for HVAC heating and cooling. Trying to help my son I’m a single mother, putting my son through trade school for heating and cooling HVAC. he’s struggling severely. He just started about a week or so ago and had a test two days after school started for the math part and didn’t do well. it is super hard for him and he has to learn everything so damn quickly very fast and the teacher he has is AWFUL and rude. he’s getting very discouraged and wondering if this is really for him. I want to keep motivating him, but don’t know a thing or have any men around that know about this. if you had any tips for new students, that would be greatly appreciated. (cause i’m sure you’ve been there lol) I understand if you’re very busy. thank you 🙏 Have a great day! 👍
I'm an apartment maintenance tech. We don't have to go to HVAC school so I've never taken a class in anything so I'm not sure my advice would help as I've never been to HVAC school. Apartment maintenance will always welcome your son with open arms, though! Thank you so much for watching!
What kind of math do I need to know to do hvac? I’ve never been good at math I only know algebra
I don't do any math. Unless you're an installer and measuring duct, all you need to know are pressures which gets easier the more you do it.
Why those units so low to the ground?
I don't know? Great question, though. Thank you so much for watching Robert!
@@LexVance watch them floods.
I'm 15 years H-VAC...he really should have changed out that filter.
Thank you so much for watching!
Instead of replacing the coil. Why not just replace the air handler it’s a hell of lot cheaper then a coil
So true! 😆 Thank you so much for watching B Gunter!
2 filter driers is def WRONG!! You did em the right way skid...and a freakin contractor did that lol...
👍😆👍 Good to hear from you Ben!
I just replaced a titan pro that went from 45uf to 20uf in les than 2years.
They are made in China. The titan hd is made in America .
I went to buy an MARS made in American and it’s assembled in Mexico.
Went to another supply house and the MARS same part number as the other one Is made in American .
MARS ADVERTISES “Made in American”. So, is assembled a legal play on words!
“
Thank you so much for watching Richard!
That's a muffler on the inside
Thank you so much for watching!
You shouldn't have 2 filters 🤪
👍😆👍 That's what I figured. Thank you so much for watching Brian!
Lazy did not want to change it.
Agreed. Thank you so much for watching John!
need to be off
So true!