HVAC Service | Another Dirty Evap Coil

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[@mattcatchpole7367]

I was always taught to put a micron or torr gauge on the opposite side of the system from where your vac pump is. Either that, or a gauge line is attached to the high side and one attached to the low side with the micron gauge attached somewhere on the liquid line, if a port is available. That coil cleaner looks brilliant! I'm not a fan of coil cleaner, but that looks the dogs! Good work brother (from the across the pond!)

[@mariobryant8803]

A clean evaporator coil can make a huge difference in airflow in the cooling stage and proper maintenance helps.

[@scrambler350]

Cooling season hasn't officially started until you've gone through your first jug of NuCalgon Rootbeer.

[@lopaka79]

Schrader core removal tools and Nitro have been the ultimate prescription for fast vacuums for decades. Your micron gauge is also too close to the pump. Try testing two exact same micron gauges at the service valves and at the pump, you'll see the difference. Switch the same gauges and there will still be a lower micron reading at pump then at the valves. Lucky for Ref guys most evap coils have a schrader port at the evap to slap a micron gauge on. I know its a crap shoot on residential AH's. Thanks for the video sir

[@hvac01453]

This was a far superior cleaning than you would accomplish with the hose end sprayer style. It just foams up so mech more and pushes out so much more embedded dirt from the coil. The only step that would do better is using the power washer to force the dirt out. They yell you not to use Nubrite on inside coils but, experienced HVAC tech know its the only way to get out embedded dirt from the coil, it just requires extra precautionary rinsing. Some techs spray a weakened solution of evaporated no rinse, if there is a concern of any off gassing of the chemical with customers with sensitivity issues. removing the top plate was going the extra mile. I saw the pan for horizontal install off to the side. Do you leave them off?

[@scottgrissom274]

I have always thought you were supposed to spray the dirt out from the other side of the coil. Using that outdoor coil cleaner in my option etch the coil and makes it easier to catch dirt the next time.

[@dps6198]

I would have given the coils a second and third go round with the foam cleaner and used a flashlight to see every square inch to see spot treatment was needed. It cost a ton of money to have a tech just to come out much more to remove the coil and clean it then to spend an hour with a vacuum pump then to charge it. You gotta get that annual maintenance where the tech comes out to check the system and clean when that crud is starting to form.

[@MrDeviousdom]

why go through the time to remove the coil? How much did you charge the customer?

[@ohhhtravis]

Is that the same dog I hear barking in every video, or different dog?

[@blackericdenice]

A tech came to my house and said my 27 yod system needed to be replace. I clean the coil myself and my unit run fine now without freezing up.

[@johnabalos1455]

I was also able to clean my own evaporator coil with two cans of evaporator foam ! I used a dog an cat hair shedding brush on the coil dry at first , a lot of surface dirt came out to my surprise after that I started spraying the foam inside the coils with cleaner supplied small plastic tube,two cans of cleaner work best,put access covers back on an turned AC on an according to instructions on cleaner the remaining dirt rinses away along with condensation, as a couple of days went by the AC got colder an colder then started getting icy cold!! It’s 103 here in Waco Tx. An this really paid off big time!! The entire system is 17yrs old, but now cooling like new!!! Hope this can help someone else!!!!

[@jonngoose6052]

Do you take off the drain pan and clean under that too?

[@airsofterforlife1996]

John driving a chevy?!? Company must not have seen your videos about disliking chevy. Great video!

[@jaymeez]

How do you pull it out? Most of the videos I’ve seen were of them being cleaned while they were still installed

[@daviddowns7552]

what did you spray on it first..coil cleaner?

[@chrissimmons706]

Nice. Keep them video coming man. Love it!!

[@ronaldcach2779]

Hi John, how did you know the coil was plugged? THANKS FRIEND

[@smoothsteviegful]

A+ for effort but that coil would be easier just to change half the fins are bent over on inside.

[@cli_sensei]

I always thought you couldn't use the harsh condenser coil cleaner on the evap coils or is this a foaming evap coil cleaner? It may not be condenser coil cleaner, just looks like it.

[@tombonini7393]

You can't use it in place because there is no way to properly wash it out. If the coil is removed like in this case and you have a place to properly rinse it .....

[@sarahbrown4355]

What if you can't remove it and it's hard to reach but reachable

[@cli_sensei]

@@sarahbrown4355 they have evaporator coil cleaner that's self rinsing. The condensate from the AC running rinses it.

[@CryptoAbe]

Days of this is over. Nasty house they can buy a coil.

[@melplishka5978]

How long do you put the system under vacuum?

[@muniznick]

Is there an allotted time for coil cleanings, if this was done in the military your would be given a hazmat suit and hazardous duty pay, maybe a ribbon for uniform.

[@lopaka79]

Really matters from company to company. Some have fat flat rates while others have very tight flat rates. One company I worked for charged a 6hr minimum from start to finish. Another company charged 4hrs which is kinda cutting it with no room for error or surprises. Last company I worked for did T&M on everything.

[@jmrhvac4542]

Was that a Chevy truck John lol nice job

[@scrambler350]

John finally has a REAL Truck, hahahaha

[@purplefurture6960]

How did u opened it

[@hozerhvac4406]

Good video how long does that call take you?

[@lopaka79]

@Cory also curious about time frame

[@bzerk86]

How satisfying to thoroughly clean a dirty coil! Generally speaking, in a situation such as this, do you charge the system with new gas or replace what you took out and top up where needed? I assume yes for R22 but not sure for others.

[@tombonini7393]

Why would you waste refrigerant. In many cases, the existing refrigerant can and is pumped down into the condenser and only needs to be released back into the system after the work is done, the system checked for leaks and pulled back down.

[@bzerk86]

Ah yeah, I didn't't even think about the system being pumped down, I thought it could have been pumped out into gas cylinders.

[@veil67]

holy , i really wonder how was the air filter , if there was any

[@tkdrgnon]

Looks like someone tried to scrape the dirt off the fins on the inside and bent them. No amount of cleaning is going to let more air pass with them so bad. You may have some luck with a fin comb. Good luck.

[@pw6048]

Nope. John bent them using the water jet. At 2:54 the outside fins are strait, and at 2:57 they are bent. Terible job, that should not been done this way.

[@aircooledtx]

Good job, John

[@georgen.8027]

Pulling through the manifold makes no difference to the vacuum... bigger hoses don't make the vacuum "stronger", just faster. You can pull a vacuum through a pin hole if you don't mind sitting and waiting...

[@tytig94]

The way your micron gauge is set up, your measuring the vacuum in your pump. Not the vacuum in the coils & lineset.

[@gramarmy]

Not true, almost all vacuum pumps have a shut off valve built in, so you can isolate your pump. if you shut that off, you will read the vacuum in the system. BUT, I do agree, I am not a fan of putting it there for 2 reasons. 1. Your vacuum gauge can get oil in it more easily there. 2. If your hoses and / or gauge leak, it will look like the system has a leak, when it really doesnt. But Im sure John tests his gauges / hoses for leaks on a regular basis.

[@tytig94]

How often do refrigerant hoses last? I've heard some guys say one season and others say just change the fittings. I am a fresh service tech this year(started beginning of cooling season(Midwest)), I need all the information I can get.

[@tombonini7393]

Why did you remove the coil? Was it really that bad?

[@billybassman21]

You can't properly clean a coil that is that dirty without removing it.

[@johnpearson5865]

? Do you change out filter dryer at same time just ?? Thx

[@krzysztofszyszko2873]

John Pearson every time you open the system lol

[@lopaka79]

@John Pearson That would be ideal

[@TheProAer]

GHIT ERR DUNN!!

[@stevengibson8866]

Plans on going back out on your own ?

[@furnacetech2581]

Funny how much work can be prevented by just keeping a clean air filter in the unit :)

[@rmo4222]

Over years filter don’t catch it all. Fine dust particles build up.

[@ncbluegrassevents1984]

If you have animals - dog dander slips through the filter too. Our duct was thick with dog dander. We have tried tonight washing out the evaporator ... waiting until tomorrow to see if it worked.

[@FernandoLopez-js9fi]

Any new podcast in the near future. Professor !

[@naskutak]

How much does that ????

[@66crush9]

use oven cleaner on mine ,works great

[@bobbywenger5595]

👍👍

[@jonathanalcantara6803]

Do you ask to use the homeowners hose?

[@earthling94]

I never use the homeowners shit..i don’t take water, tips, food, or use the pisser.

[@johnisraelhvac2019]

It was my hose

[@lopaka79]

@Steven Izzo So if a home owner sets up an extension ladder to access the package unit on his roof do you decline and setup your own?

[@earthling94]

lopaka79 yup. I’ve fallen off a rickety old piece of shit wooden ladder a guy had set up for the attic. I’ll use what they offer as little as possible. Maybe it’s where I’m from, but people bitch about every little thing. It’s best I use my own shit and try to be prepared

[@lopaka79]

Think we can a agree there's somethings a customer can offer that would speed up the process and also use personal judgement on questionable offerings 👍

[@bababooey7576]

Isn't that a bit rough handling of the coil? Guess I look at AC systems as fragile (to a degree). Not meant to sound like an asshole, otherwise I'd be one of those armchair assholes not in the business, but knows everything. Just curious. Good video and it is so satisfying seeing that crud wash away...the thing Will run mint!

[@krzysztofszyszko2873]

bababooey7576: do you pull coil out for cleaning?

[@bababooey7576]

Chris Sysco Sorry. I didn't read my comment before I hit enter. I Meant to say I'm not in the business, but just curious and didn't want to sound like a huge know it all that really knows fuck all and is an ass about it sort of thing, lol. Is it a common thing to remove evap coils to clean?

[@gramarmy]

It is all metal. The only part you NEED to be careful on is the metal fins on the coil. They are aluminum and they bend very easily.

[@bababooey7576]

Oh i know, i guess i was just thinking of all the joints at the ends that could leak....was thinking maybe if it was roughed up enough, it'd spring a leak or something...maybe my ocd, lol. yes bending the fins...argh pet peeve of mine.

[@LifeSurvivor_D]

What I was thinking, he needs a whole new evaporator in my opinion because all the coils are bent blocking passageway. The system probably could run better

[@anthonyregina938]

A coil that dirty, there is no other way to clean it. That’s just my opinion. You can definitely tell that it’s a rental unit. Funny! It’s always renters that make a coil that disgusting,,lmao

[@fredoman2683]

This guy likes to play with water lol ✌

[@Popsicle17-gtag]

How ya like driving that CHEVY Boss? Lol j/k

[@tombonini7393]

First his FORD, now a Chevy. When he finally gets a Dodge, then he will be king :-)

[@JurassicJolts]

That’s a thick coil

[@gregnettles3677]

Omg that's nasty

[@wtfman5313]

:-)