no clue what this guy is talking about but the guy makes it sound so interesting and understandable that i stayed for the whole video

Is that an OSHA approved brick you're standing on? I prefer the OSHA approved 5 Gallon bucket step stool myself 😜

Man, you really gotta appreciate Chris for sitting down after a workday, editing, commenting and uploading a new video.

A great tip given to me by a field engineer: Always know what value you are expecting before you put your multimeter on the terminals.

That thing looks like it hasn't been cleaned since the time of the Pharaohs!

"32% humidity is HIGH." I wish... 83.5% yesterday, temps in the 80s. That split condenser really surprised me with how gunky it was in the inside! It's not what one would expect, because the outer half looked recently-cleaned. I bet somebody hit it with a quick rinse and pushed all that crap into the inside, and then left it to dry.

Great mentoring technique, know it's hard to balance between filming and what you need to teach the newbie...you're the kind of tech I enjoy watching over their shoulder. Happy Fathers Day Chris!

This video it seemed like you were training a new tech or perhaps an apprentice. It was absolutely AWESOME to hear you explain some of the stuff in simpler terms. I know most of your audience is HVAC techs, but some of us are just regular guys interested in learning. Your regular videos are great, but every once in a while a "training " video is very welcome! Thank you for all that you do. Your videos are always interesting and informative. As to humidity, we have plenty here in Georgia... Maybe I can box some up and send it your way! :-)

Man that condenser was dirtier than my ex wife. Happy father's day guys!

9:00 lol 30% humidity here on the east coast is a great day, in the summer it’s usually anywhere from 60% to 100%

ahh thank you youtube recomended ive never watched a video on the interworkings of an ac unit before but this was a very nicely done video

“Their schematics can be a bit confusing” Lennox; am I a joke to you?

Well Happy Father's Day if you have the luxury of being one if not happy Sunday keep everybody cool man

Even tho the subject is boring af its interesting to watch professional at work explaining everything.

Wow you're making everybody look like kids man I swear to God no one has ever shown this crap good job Amen brother.

So glad I'm a Remodeling contractor and sub out HVAC...My poor Brother in Law owns an HVAC co. He goes everywhere and works crazy hours in the WORST conditions...I'd rather be a plumber ( the second worst trade)! :)...You guys earn every CENT!

I think this is the first time I've seen a tech perform the heimlich maneuver on an air conditioner. That thing was totally choked on that grime

Great video, I learnt a lot! But my inner engineer is screaming though. Dust and electronics usually don't combine well. Those connectors and exposed circuit boards are a prime example of a system designed to fail.

Morning and happy Father’s Day Chris !!!

Glad I'm not the only one working on Father's day. Happy Father's day to all the HVAC Dads making shit happen on the daily

you guys would laugh at my 1977 central air unit i have maintained it since 77 it is 100 today and its cooling my 3500 square foot house just fine it struggles if you put thermometer below 77 though its had a run capicator replaced and fan motor other than that nothing.when i watch you guys work on these new ones they look so big and complicated.you guys understand electricity for sure!

Great video. I used to be in the overhead crane world and screamed for keeping certain parts on the service fleet. Saves so much time and headaches.

It's not a problem to watch your videos from the beginning to the end as it's so satisfying to see a skillful technician in action. :)

32% humidity is "HIGH" OMG Chris you need to come back home to Missouri!!!!! See how you make it!!! LOL, Great video keep em coming!!

This video was narrated beautifully as a training video for your guys, explanations along the way of not only what you are doing, but also why. Nicely done Chris! On a side note, the X terminal for the compressor lockout board, is that terminal just for troubleshooting? Or are there systems out there that bring that terminal back to a thermostat or building control system for alarms or other purposes? (And finally, that was a nasty split)

Love that you explained the sequence of operation and troubleshooting steps, very helpful! 👍

I love that osha approved cinder block step stool your assistant is using 🤣🤣🤣

Your videos on top of having a great mentor has helped me in my career tremendously. Thank you. Happy fathers day man

when you guys are struggling in the heat fixing ac units im working in bodyshop with no air throwing chains on frame machine fixing truck frames and im the only paintless dent tech in shop so i have to do them to and paint and do big dent stuff but i respect you guys alot wish i woulda been hvac im qualified and trained in cars but not the new ones with the y refrigerant

That was a pro find splitting that condenser. I bet most techs wouldnt split that condenser and just washed the outside of the condenser coil. Great video. Try to burn yourself out in this heatwave

Id like a video about being up on a hot roof in that kind of heat. What things do you do to help you be able to function? As a welder I often set up a patio umbrella to gain some shade.

35 years in the trade and appreciate you teaching this old dog some new tricks.

I’d rather have your 32 humidity than 82 atm.

Great troubleshooting technique. I miss doing HVAC until the weather sucks and that is most of the time on a roof in the midwest. I'll live vicariously through your videos.

i have no idea how i ran into this video. i have no idea what anything you say means but what i do know is, you know your craft, and that is very impressive. always cool to see a pro do this job and make it seem easy

also this reminded me, it would be cool to see an autopsy on a suction line filter dryer after a burnout to see how much shit it caught

He standin there casual like "yeah this one says 104 degrees." These dudes are probably so hot they don't even remember that they are hot. These are the real heroes of our time.

Best video so far showing step by step what to do when. I first started learning hvac they did not show me nothing had to learn most on my own these video so me something new every time I watch I like listening and learning from you

Thanks for explaining the entire process on that first unit, and also thanks for explaining where to take temp readings on the suction and liquid lines. Your videos are 1st class.

I know very little about AC but the explanation was so clear and so methodical that I understood every word and I could easily see the debug sequence. People who know AC usually are not good teachers but this guy was a great teacher.

Really appreciate how you walk through the troubleshoot. I have no HVAC experience and watch these strictly for entertainment value. Great videos.

I was today years old before I finally came to understand ECONOMIZERS! I'm now off to sign up for this stuff on Patreon. Bully Chris!

"It's not that hot outside, it's 100 degrees" as a European person, I got zero clue how hot or cold that is...

We see a ton of cottonwood tree fiber in the air around here this year. Some years are worse than others. I had to remove what looked like a wool mat pad between the radiator sections in a truck a number of years ago. It looked like a rolling wave across the street as you drove that year.

This was a really good troubleshooting breakdown from start to finish. I’ve been in the field for 10 years and I picked up some really useful information from this one video. Keep up the great content. Subscribed!

I learned more about HVAC in a few minutes than I would've thought possible. Great teacher.

I never thought I would sit and watch someone find out what is wrong with multiple A/C. Thanks, I was interested the entire time and man you can explain what is going on so easily. 😲👏 Great video thank you.

As usual, nice work Chris. Again, love the satisfying shots of cleaning the dirty coils. Happy Father’s Day brother

Wish most companies would use teenagers as a laborer. We need to get the younger generation into the trades. The information you are showing us is great information!

32% humidity. Im in Kentucky. Its 5:30 AM. Humidty is 83%. I miss living in southern california, humidity is hell. Here's what high humidity does. we had a broken AC. During the day the temperature inside, according to the thermostat, got to 83 degrees. So after an entire night, know what the temperature inside was? 81 degrees.

This video makes me want to work in the HVAC industry.

Man, 3 things. First one, thank you for your videos. Second, thank you for the emphasis on the "sequence of operation". If you could touch some of that more often, it would be greatly appreciated. Third, it is funny because you said that "the condenser doesn't look too bad", but I had a feeling before you opened it that it was, in fact, dirty as hell. Conclusion, I have learned a lot watching your videos. They have given me a lot of input for troubleshooting. Thank you.

As an electrical engineer I feel very unconfortable with all this stuff hanging around in the dirt 😄

How this for a comment, if you were my boss or my senior tech when I entered the field, I would still be a field service technician. Keep up the great work and thank you for all you've taught me!

I absolutely hate those double row condensers. The Lennox HS 25 condensing units are designed this way. So many are not aware of this, and they see the outside is clean, so they don't think its dirty. You have to remove the fan top, and get in between the 2 coils as well.

Great video, and Happy Father's Day!! I worry about you sometimes, the way you'll cancel a family outing, or work til 2 am saturday night changing compressors. Point being .... it actually made me smile as I'm sitting here with my 3 kids to hear you say you weren't going to spend your weekend putting some kind of band aid on their AC just because they would like their bathroom cooler. You're entitled to some sanity, and I have to stop and tell myself that sometimes too. We all do. hope you enjoy your day. The sun will go down and it will come up again and whatever restaurant that is will have made more money than they did last Father's day and they'll live.

This vid was in my recommedation, after watching this I can't stop watching the other videos, keep up the great work!

I always thought those three dots on the compressor were a soft plug. But I was told that those dots of what it looks like solder was just where the windings are suspended from via a weld. Maybe I was right then?

Thanks Chris. Awesome step by step diagnostics.

Great ladder logic call out.

Chris: “We have high humidity right now and I bet it’s 32%, 35%.” FL: “That’s cute. Hold my beer.” Current humidity level outside is 90%+ dealing with outer rain bands of a Tropical Depression. I wish it we had a 35% humidity level.

Burnt to open,see it all the time! Slow burns are the worst as far as contamination is concerned! I've done simple opens that weren't too bad and I've done some where I condemned to unit,due to the black sludge oozing out!

AC #4 gas valve was shut off, don't know if you noted that.

one sensor read 39f one nothing, yet both read 10k ohms on the deck? First thing I would have done is swap them out to see if the misreadings follow . the new ones were 15k which isn't miles away (and depends if the van was as hot as outside) I think I would have let the old and new equalise temp on the deck and remeasured. I'm suspecting bad connections but you know these units better than me for sure. Great video as usual.

Excellent knowledge transfer experience!!!! Broke it down, step by step in an easy to understand way! I'm sharing this one with our new techs.... Thanks Chris!!!!!

Great video! Really enjoyed the different types of action shots you were able to get with the added assistant!

On choked condensers. Onboard ships we blow with air first then wash because some of the finer particulates were turning into a hard cement-like-crete when wetted and then dried. Good for when you hae easy airline access. I don't work on the refrigerant cycle part of the plant yet but will eventually. I just hae to monitor and call the bossman if there's an issue and it's great seing the lengthy vids of your work, common issues and great oicing of the internal monologue (always find it makes a better presenter on these type of what-I-saw videos). Always good to see someone who cares about doing the job right. Have a like and a sub. Time to watch some more.

Hope that HVAC guys support right to repair.

Chris makes me proud to be a rooftop hvac technician! Looking forward to this spring and summer maintenance and service calls!

On split coil condensers I've had a fair amount of luck getting the sandwich crap out by simply deluge flushing from above and not pulling them apart much. On residential units people expect to last 20 years you don't want to do much flexing. Used a gallon pitcher that has that shield over-top the pour like a watering can, splooch muck gone.

Good job sir,thank you for the class I appreciate it

I just learned 3 things. #1 Economizer temp sensors #2 Split the coils (never took it seriously) #3 Voltage between x and c

At the 11:30 second mark, you said we would have a “higher than normal TD”. I think you meant we would have a lower than normal TD, when the economizer damper is open. Keep up the good work and videos.

All refrigerant has skyrocketed. In my area 410A is up 200% in the last few weeks. Gonna be a interesting summer I suspect, hope I'm wrong though

Very nice video. You are the man when it comes to diagnostics

No idea how I got here...why I am watching.... but I watched it all.

I found this video very informitive im in school now for HVAC so thank you

I didn’t know that the outside unit can do free cooling , thanks for the introduction!!!

always learning from you, thanks for just being you

Excellent video, such great information, thank you.

guys around here would just change the fuse, flip the breaker, and watch the fireworks 🎇 🔥

Wow that inside coil. I've been watching for years and you've always said make sure you check but never seen one like that. Jeez

You should be using insulated screw drivers. Don't risk shorting stuff out by accident when you don't need to.

What an odd coincidence with that temperature sensor. The bad reading was pretty close to actual temp in Celsius.

Wow one of your best videos ever, Carrier troubleshooting 101 👍

You think 32% is high? try living in Florida during summer. Temps don't get quite as high (80s 90s, sometimes we'll break 100, but it's rare), but the humidity at 60-80+% makes it BRUTAL. Also, are you training a new tech? It seems you were showing someone new to the trade how to do it.

im currently in trade tech to learn hvac but i would love to internship under him. he really knows what hes looking at.

Wouldn't know what to do with 32% humidity lol. I live in Kansas currently our humidity is around 70%

you could use 407c with new compressor it has poe oil,and you can use nu 22 or mo 99 on mineral oil have done in for years.need to carry more bottles like everyone else.

The humidity here is 82 percent. No it's not raining or cloudy. It's not too hot yet. I can stand hot temperature in low humidity. But 90 degrees at 82 percent humidity is horrible. I consider anything below 45 percent as low. I also want to add, all of our distributors are completely out of R22 except one. I'm not getting anymore. I'm experimenting with MO-99 and 407c

Happy Father's day Chris. Hope you get to enjoy it

Me a half asleep metric user: 100 degrees!?!?! Jesus christ Me remembering they are using freedom degrees: oh wait 100 is not as much as i tought ouf!!

8:57 30% is high in socal??? Wow. I knew you guys got low humidity but I didn’t realize it was that low. In Massachusetts we’ve been getting around 50% to 60% humidity and that’s low for us! Weather has been amazing recently.

After watching this,I remember why I hated restaurant work,everything you work on is a toilet, it just amazes me that they really never put aside a chunk of change for maint or repairs.Of course most restaurant were C.O.D !

I have no idea what you're saying; but I like it. --Every home owner / Building manager ever.

this is the first time i watch your video ... I really like your approach! Big like!!! keep up the good work;)

@ 19:31 - "Y is the question". Yes, yes it is.

i dunno how you do it when multipiles go down that would be a mind game but you do it well

r32 is the future, in the eu r22 hasnt been sold for years and the only way to get more for one old system is to recover it from another

You are such a pro! Thanks for the schooling.