Excellent. Thank you for sharing your know how. Alot of people say that cleaning the condenser casues problems with the fins later on. I dont buy it. Plus the unit itself and the components have to work a hell of a lot harder if the coils are clogged up, which leads to problems with the components inside of the condenser later on.

Good job Big John. I just cleaned out our outside condenser coil. It was covered with vines. I cleared out the vines, pulled the power, lifted the fan motor housing, and sprayed out the coil inside and out. I need to get some detergent. Then went down in the basement and changed out the filter. There was also an access panel to the indoor condenser coil, which was matted with cat hair in only one year. So I washed the indoor coil too. Last night it was 80 degrees inside the house. I had to shut off the a/c until this morning when I could get a look at the problem. I thought the condensing unit had gone back, but this morning I turned the a/c on, everything was running fine, even the squirrel cage. All the system needed was a good cleaning. Now I'm sitting here in a nice cool house while outside it's 90 degrees with high humanity. Take care John and thanks for posting these videos. Next year we're looking into getting another Goodman. This one has lasted 25yrs and still runs like a champ. We just figure it's time for an upgrade. I wanted to order one online, the entire hvac system with outside condensing unit and gas blower delivered to the front door for about $1500 then find a contractor to do the install. Trying to save a few bucks on a fixed income and budget. What do you think?

On something like that I'd do it the same way but also like to hit it from the inside out to make certain I have a clear stream of water. I use a 3/8" diameter by 4' rigid copper spray nozzle I built to spray the coil from the inside without having to disassemble the whole unit. Basically like the needle jet. Good to see someone else cares about the quality of their work.👍

This is true. I asked an experienced HVAC technician about the best way to clean the coils. He said clean them the best way you can. It doesn't matter the direction, as long as you keep them clean and jet the water at a downward angle. Most home owners will not remove the fan assembly or take the panels off. So just rinse the coils with a water hose and a low pressure nozzle is better than nothing.

Hi, John Israel this is Jermey McGuire. I, had a 5 ton Lennox XC16 air conditioner that cooled upstairs. Back in July 2022 the high pressure switch tripped, we had to get a tech out to reset the high pressure switch. And cleaned the coils and last July my blower Moyer failed.” Had to get the blower motor replaced, unfortunately I had to replace both my downstairs and upstairs air conditioners.” Back on Wednesday 4/1024 Lennox is so expensive!! Just to get a part replaced, to bad Lennox won’t let you use universal parts like Goodman. And Goodman keeps parts in stick, then having to call the manufacturer to get the factory part you need.” I don’t recommend Lennox to anyone! Lennox is a big pile of 💩💩 the 5 ton Lennox air conditioner I had was 15 years old it was time for her to hit the road!! 🤣🤣🤣 good job cleaning the coil John!! 👏🏼👏🏼👏🏼👏🏼

Love when I find coils like this, it’s pretty satisfying cleaning them,

Ive clean coils this way since 1984 and have never had a problem. In fact that's how they taught us to clean coils in school and now all of a sudden it's a problem. Overtime dirt and dust gets pulled in between the coils regardless and it comes out one way or the other regardless. Just keep doing what you do dude.

Only on commercial units does it matter due to the thickness of the coil or multi layer condenser coils like carrier on there roof top units.

I'm a HVAC Technician and I've cleaned a lot of coils like this with the coil cleaner and it helps compressor

Not a big issue with the older 10 SEER units that had flat fins and reasonably spaced around 14 fins per inch. But the newer high efficiency coils have fins that are much tighter and they are not flat. They have little scoops stamped into them with the opening facing the outside to make the air more turbulent resulting in better temperature transfer. These scoops are little funnels and once you push even a little dirt into them, it plugs them good. You won't see it because it's between the fins. I've seen many plugged coils, especially evap coils that were spotless on the faces yet plugged so bad I had to run 4 rounds of NuBrite just to get the air flowing back at rated CFM. That said, you don't get paid more for getting it cleaner. You get paid for getting it done. And this homeowner obviously likes to point the mower discharge at the outdoor unit and not turn off the AC while mowing. It'll look like that again by the end of mowing season. Sometimes good enough is good enough.

Very satisfying video to watch! I need to get myself one of these coil guns!

Careful with tje pressure. You dont want to bend a whole row of coil

Tune in tomorrow for another episode of The Angry Tech.

So satisfying to watch!

I honestly love doing the coil cleaning on my checkups, it's one of the most visually rewarding parts of the tuneup if they're really dirty like this. It's so easy but it's making such a big difference for efficiency and heat-exchange.

Anyone that’s says this is wrong cleans coils the same way. I clean them everyday this way and if you have time to go from the inside out then you don’t have as many calls as most of us do in a day. Nice work

Good job IT'S Clean and ready to go again

Nice. I still drag around pressure washer. I 've seen a product on Johnstone's website that is battery operated. Less clutter on the truck works all the time. Nice demo

Awesome tip I can see a big difference when the unit is clean

I wash them like that to and I have been known to wash them from the inside to make doubly sure it is clean. Even on Tranes I wash them that way instead of using a lazy flame and it works just fine.

I see this alot on home AC units where it just sits on a shallow pad and just gets clogged and bashed by the the lawnmower. When I installed my new system I went to a local welder and had him make me a steel stand about 2 feet high that i can put my ac unit on. He made it exactly to my measurements so it sits in a channel on the top where they meet and then poured my own pad and then bolted the the compressor to this little steel stand and then bolted the stand to the pad. Been a few years now and the coils are staying really clean and shiny. Much quieter too since its not laying on the pad. Makes a huge difference in the longevity of the unit.

The water pressure and angle you hit the coils is something to keep in mind. You will have issues with all your fins bent over

I have a small room and this AC is very good in I Happy I purchased and will be using again next year.

I like this video. We got a lot of greens that think they know it all. Good shit brother. Love from Texas!

Looks good to me, I clean units the same way and never had any problems.

What is the purple funk-b-gone you are using?

On residential units I agree. Nothing in the resi market has thick enough coils to matter. Now try that on a Voyager or something similar you’d be kicking yourself cause now you’ll spend extra time taking it apart to do it right.

*Great and Easy to instal **Fastly.Cool** Low noisy*

I have a question, hopefully you can guide me in the ride direction. Info before question: I have an HVAC unit and the coil inside the house is set in an angel. I noticed last night rust is staring to build up on the pan that catches the water from the coils that leads to the drain pipe(s) and the bottom of the coil. What would you recommend I use to remove the rust that is on the pan and starting to come up the side of the coil? I do use the coil cleaner form twice a year and I know they remove dirt, debris, and other junk that gets in to the fins. I am stuck with Google searching how to remove the rust. I do not want to introduce no chemicals (acids, anodes, etc.) without hearing from experts in the HVAC field.

I always did it this way and never had a problem.

Looks good thanks for the info!

Wow the attachment really does the trick!

I like how the narrative is peppered with anger

I hit my coil with a spray like that and my fins flatten down. They are so soft the spray pushes or bends them flat ?

I only had one side of my coil clogged up and it was tripping the high pressure switch. I have no idea how this one got that bad before tripping it. LOL. Great vid.

Does it hurt the surrounding grass, I flood the hell out of area after but do I need to. Or just spray the grass off.

Nice "Sweater" on that unit

What kind of solution (foam) do you use to clean that coil?

refrigerant, ambient and head pressure it was running?

I personally like to put the cleaner on the outside. Allow to soak for a few minutes. Spray the outside to know all the shit off and follow up by spraying from the inside outward. Adds maybe 5 minutes and i feel confident the coil is clean enough. I also use the flat setting on the hose.

Nice job! Now if I may ask where can I get one of those coil guns?

They teach you in school and on the job to clean coils the way this guy is doing it. And not all condenser units have panels on the side, many have open coils you have access to.

Best bang for your buck IMO

As long as the coil is doubled up it doesn't matter side clean it from. And from what I saw you have foaming nucalgon cleaner. If i can access the coil i wil clean it from both sides. Keep up the good work john. Ps. Love my coil gun too.

How many ounces of Nu Brite did you use? Thanks!

This is great! What happens when you turn it on but the fan in that unit isn't turning? What are the usual causes of that happening?

I clean coils this way everytime 👌

Oh my GOD that was so satisfying

what kind of soap and soap dispenser do you use?

Nice video John Coil gun is a must have

hi i am from brazil, and i am too a technical conditioning air,here i wash inside to outside to,but congratulations to the work

thanks for your video

Can you spray water down in the top of this kind of unit?

👍 Washing from outside is much cleaner and faster than from inside. There is no pressure to properly wash the coil by doing it from inside out. Even on tranes. If the debris is small enough to go inside it will just go through and that’s it. Never understood all the fuss about cleaning from outside/inside 😂

very good service of outdoor unit

This is why people diy. Appreciate your expertise but the high pressure appears to be damaging coils and in my are there are leaves and debris that collect on the inside. So to a large degree I have the satisfaction of treating a pretty expensive piece of equipment differently then someone who is concerned about the next job, according to some of the comments, especially for my sister’s house, etc. Great post. I’ll definitely consider your points.

Can you use any cleaner like simple green as long as it suds up?

does this improve heating or cooling efficiancy?

I THINK THE WASH IS FROM INSIDE TO OUT SIDE FOR BEST RESULT, TRAY IT.

5:08 Absolute mad lad XD

I can honestly say that when I clean any condenser coil, I always spray from the inside out.

Is there a way to clean the coil in an HVAC system when the coil is inside at the botrom of the furnace assembly???

Getting my coil gun and what soap do you recommend for most coils?

How are you doing sir? I have a question, that connection for the solution you use to clean the coil were did you get it from?

What is the type of cleaning solution used? What is it exactly?

Ummm, What cleaner are you using?

pressure washed my condenser closed the other night outside didn't see what I was doing i take the top off would it straighten them out?

As an industrial hygienist, the probability that new growth will re-bloom if the material is just laying on the ground is very high. A lot of that accumulation is mold too; not just dust such as Alternaria Alternata (a dust borne mold causing respiratory issues). And 10% of the population is allergic to Alternaria Alternata in the United States. In Arizona greater than 51% is allergic. Sensitization (allergy obtained) when the individual has been overexposed for a period of time and the immune system writes and exaggerated response to the allergen. Why is Arizona different? They are running A/C more and it stands to reason that the well known reservoir (place this allergen is found) is in A/C coils. It is an established fact that indoor air quality is adversely impacted by HVAC systems which are not frequently cleaned. Kudos to workers keeping up on condenser coil cleaning and filter changes. The kiddos developing asthma and folks struggling with breathing problems need your support. Anyway, just a suggestion, vacuuming with a HEPA vacuum without leaving the bulk debris on the ground might be a good idea to prevent rapid re-growth. However; if the goal is repeat business (wink, wink) homeowners might have reason for removing the tops and going in deeper with the cleaning. Knowing that much of that dust is an airborne mold that causes respiratory issues might influence the approach to cleaning.

Yes you don’t have to push it from the inside out. Although that is the recommended way. When your air conditioner is that dirty anything helps

The only time I do inside to out is with a split row coil when you split them apart.

What is back flushing?

What do you think is behind the coil a brick wall? Lmao I love it

How on earth did it get that dirty? Jeez! Nice job.

Good service

What kind of hose nozzle did you use? Looks like it does a nice job of rinsing the unit. Nice job.

I tried this on a Goodman package unit and that much pressure will bend ever coil fin flat and closed in a few seconds. I have never seen coil fins this thin. My suggestion is to check the resistance to bending of the fins long before spraying from either side as you can do much damage if the fins are a thin as they are on the Goodman unit.

Evry how many clean ac condenser, evry Week or month?

What about all the crap down inside the unit? It wasn't dirty?

Yeah but does it push the dirt deeper into the coil ? You weren’t clear on that .

What is that soapy stuff

Did he take that thing out of the wall? I hope he doesn't get hurt.

Don't care about all the arm chair professionals out there! Think of it this way, if you were doing it wrong, how long do you think you would be in business? I've seen a bunch of your videos, and you are obviously still working, so you must be doing something right. Thank you for doing these videos

Professional tools make work perfect I have same work style

Good to tell home owner unit could be low on freon after cleaning

I sell Armstrong air and i love it, i even installed one In my house.

What kind of soap or liquid did you use to clean the coils, did you mix it with anything else?and what's the name of the gun?

Whatever works, John. Is the unit back up and running? cooling?..........yes, you say? Great. I just love textbook geeks who service 2 units a week......"you're doing it wrong." I saw my first Sanyo Tri Zone mini split last week...... There were 3 tiny compressors inside the unit, one for each head, neat! Sadly, one of em has died :(

We all have our own ways and opinions however, it would appear your method works very well for you. The key would be on the initial rinse, not to spray straight on and push the dirt inside the coil(like a dummy)... We can see that from an angle like you did, the initial rinse took off the majority of the surface dirt.... then the coil gun took care of the deeper cleaning. Good video in my opinion.

Theoretically, back flushing the coils might get it cleaner with less water. As a practical matter, it probably doesn’t matter. Either way, you want to see clean water coming through on the other side.

When it's that dirty and neglected it really doesn't matter if it's pushed deeper in the coil. And it doesn't push it deeper into the coil. it pushes the debris out and into the unit. Which is completely fine

Aren’t yuu suppose to clean coils from inside out?

Best way is to vacuum it first then add coil cleaner or acid removing . I've used degreaser like winter green smells great it many times in the past. Then hose it down, but to each is own right .

What was the temperature improvement after this ?

If you use foam based cleaner it doesn't matter which way you wash it because expanding foam will loosen all dirt.

I clean the same way I have been told by techs that you have to do in inside out, but either way it's still going to do the same thing.

I believe a professional cleaning that cost money should be done by pulling all the panels including the corners and top. disconnect the wires for the condenser motor and set it aside. vacuum the inside and flush the coil from inside out and outside in. both ways to really clean it. The main reason I clean the bottom out of dirt and leaves is that a few condensers a customer of mine had a very long time and the compressor developed a leak at the bottom where dirt had eroded a hole in the metal. Cleaning the equipment properly is hard and should cost about $200-350 but it is much better than just an outside only cleaning.

Make more of these vids. So satisfying!

What is the name of the chemical?

Do i need to turn the breaker off the clean it

I wash from whatever way is easier... honestly unless the coil is four inches thick its not going to make a measurable difference. If someone wants to blow an extra twenty minutes dicking around with some of the complete engineering blunders of outdoor units out there, than all the power to them.. but me, I'd rather get the job done and move on to the next one. That being said, in most cases it is easier to pop the top and back flush, than deal with the ridiculous side panels and the way they are fastened.