DrZarkloff:


This is a quick lesson in how to clean air conditioning coils. It is a very worthwhile video to watch. Pay close attention.

Comment please!

Tags HVAC

24 Responses to “HVAC Tutorial (Coil Cleaning)”

  1. juicyfruitzy Says:

    thanks for sharing that! I almost hired someone to do something that seems so easy.

  2. DrZarkloff Says:

    I have to be careful about the type of coil cleaners that I use that are in the air stream.

  3. kastnmagic Says:

    Can I spray GUNK brand Engine Cleaner or Greased Lightening on the exterior unit of the A/C to clean it? Or, what about regular radiator cleaner from Auto Zone? :o)~

  4. DrZarkloff Says:

    Thanks. I can use all the help that I can get.

  5. goodboy405 Says:

    hi let me give tanks to you ,, you did awosome job ,, i learn new things by your video ,, i ask God at lease 200 years you be live and make video to teach people
    thanks

  6. DrZarkloff Says:

    Nice going.

  7. joemull2000 Says:

    I just cleaned a rooftop packaged unit heatpump. I put a garbage can in the house under the air intake after removing the filter and opening the filter door. I took all the panels off of the unit on the roof, sprayed a can of Home Depot coil cleaner on all the coils, indoor and outdoor coils. Hosed them out in reverse of the normal air flow. No water at all came inside. It all went out the condensation drain. I let it dry for a couple of days. Works great now. Great air flow.

  8. DrZarkloff Says:

    To be honest about it, I’ve never used it.

  9. DrZarkloff Says:

    I was using an off brand alkaline based foamer that the school board supplies me with,

  10. DrZarkloff Says:

    It takes practice knowing how to use the water hose and the wet vac.

  11. fd3541 Says:

    I have a question…..When you are hosing down the rooftop ” indoor coil “, whats preventing any water from going inside the building? That pan is not going to catch all of it, kinda a risk you are taking isnt it?

  12. azspots Says:

    Oh-one other quick thing….is Zerol Ice lubricant for freon “worth it”? I think that is all the husband is curious about right now ;)

  13. azspots Says:

    Hi Dr. Zarkloff - what type of coil cleaner were you using? My husband had a foam cleaner he wasn’t too happy with.

    Thank you

  14. DrZarkloff Says:

    Thanks for watching. I will.

  15. DrZarkloff Says:

    Thanks for watching. Most people don’t realize how important it is to keep the coils clean.

  16. ftra1987 Says:

    thanks give us more knowlege

  17. denisdeveze Says:

    nice vid. i just started HVAC classes and the more vids i watch i start to understand the whole refrigeration cycle. now i going to go clean my own unit.

  18. DrZarkloff Says:

    I’m partial to Nu-Calgon.

  19. Bill3865 Says:

    What brand of Alkaline Based Coil Cleaner do you recommend?

  20. DrZarkloff Says:

    I want to get a small pressure washer, too.

  21. DrZarkloff Says:

    It is possible that small pieces of trash had become lodged on the inside of the coil. Sometimes, over time, fiberglass from duct-board will deteriorate and find its way to the indoor coil. It can be nearly impossible to get all of it out no matter how well you clean the coil. You might be stuck having to replace the coil.

  22. tmoney662 Says:

    In a properly working evap. coil, should air be able to flow through the coil easily, with little resistance? I have almost no airflow through mine, even when fan only is on (no a/c, no ice) I just had it “professionally” cleaned with the foam, but still no airflow. How “breathable” should the coil be, and could cleaning it just clog it up more?

  23. joemull2000 Says:

    I have been an AC tech Since 1974 and have NEVER EVER cleaned a coil from the outside. ALWAYS spray your coils from the inside out to rinse OUT the clogged debris, not push it further into the coil. Reverse the flow of air or water from the direction it flows when it is running.

  24. thebacon1lb Says:

    My company we use Nu-Brite and a power washer. not a hose. On commercial equipment use nu-brite. first I rinse the coil to get rid of the loose stuff. then all apply nu-brite. and spray away. I tell everyone who calls me on the side when their A/C doesnt work to turn power off and spray out side unit with a hose. Works most of the time. I recommend if you have never used Nu-Brite before, call a tech. That stuff is nasty!

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