Using Homemade Enzymes To Fix & Clean Water Leaking Air-Conditioners

homemade-citrus-enzyme-cleaner-005-smallMy newly prepared fruit enzyme cleaner made from lemon and orange peels

(READ HERE for the homemade cleaning enzyme recipe)

Hello there, dear friends πŸ˜€

After an unusual period of rainy weather, the hot and humid heatwave is back again in tropical Malaysia and the air-conditioners become a necessity again to get a good night’s sleep!Β 

Somehow, electrical appliances tend to go out of order at the wrong time, and in my case, my bedroom air-conditioner developed aΒ  leakΒ  at 11pm on a Saturday! Aaarrggghhh… frustrating!Β  At least, if it needed a technician to come and fix it, it could have chosen to break down on a weekday afternoon, right?Β  What a bad timing indeed! πŸ™„Β  πŸ˜†

The thought of having to sleep and sweat through the hot night was too unbearable and definitely out of the question. My other alternative was to leave the air-conditioner on and bear with the continuously leaking water sounds ===> drip, drip, drip…..oh, one would never be able to sleep well through all that..well, at least not for me as I am a very light sleeper. πŸ˜†Β 

So, out of desperation, I thought of using my homemade enzyme cleaner to see if it could help fix my leaky air-conditioner. I know the leak was caused by some blockage in the water drainage pipes and I know enzymes can help to clear the kitchen sink outlet pipes.Β  πŸ’‘

Wow, good news! My air-conditioner stopped leaking immediately after I sprayed enzyme all over the metal slates of the air-cond and it didn’t leak again for a good one week. Then it started leaking again and I did the enzyme “treatment” again and that stopped the leak. So, I presumed that I should have sprayed the enzyme cleaner more often to clear the air-conditioner pipe better.

Another reason why I thought of using the enzyme was because every time my air-conditioners are being serviced by my regular technician, he always poured a little enzyme onto the air-conditioner slates after he has installed the air-conditioner after cleaning/servicing.Β  That was to help clear the outlet pipe for water condensation, he said. Anyway, he was the one that also taught me how to make my own enzyme cleaners. πŸ˜†Β 

I found out from an electrician and my technician that the stuff or gunge that is blocking the air-conditioner water condensation outlet pipe is some jelly-like stuff and if that is the case, then the enzyme should work in breaking down or “melting” the jelly. πŸ’‘

Here’s the method on how to use your homemade enzymes to clean and fix your leaky air-conditioner (split unit A/C only)Β  :-

1) prepare a strong enzyme cleaner of 1 part enzyme (strained)Β  to 1 part water in a spray bottle.Β  Add a tablespoon of baking soda to balance the acidity of the enzyme so that it doesn’t rust the parts of the air conditioner. Give the mixture a good shake in the spray bottle.

2) turn off the air-conditioner (if you haven’t by now)

3) if you can remove the plastic cover of the air-conditioner, that makes it easier to the enzyme onto the metal slates by giving you more room/space to work. Otherwise, pull up the cover as high as it can go.Β 

4) remove the air-conditioner filters. Either vacuum the filtered dust off or given the filters a good rinse in the bathroom and let dry.

5) carefully spray the enzyme cleaning solution onto the air-conditioner slates.Β  Be sure to avoid spraying onto areas that are connected to wires or any other electronic boards. For this , I had used up almost a whole cup of the cleaning enzyme mixture.Β 

6) give the enzyme about 30 minutes or so to clean the slates and blocked piping.

7) turn back on the air-conditioner and see if the air-conditioner has stopped leaking. If not, spray another cup of the enzyme mixture and see if it will work this time. It should as it was successful for me on the two occasions that I tried out this method of fixing the leaks of my bedroom air-conditioner.

It is best to give a few more “enzyme treatments” to your air-conditioner the next day to allow further cleaning and clearing of the water outlet piping.


1) do this “enzyme treatment” at your own risk of damaging your air-conditioner! This is only an emergency measure for those times when you can’t get your technician to come and fix your air-conditioner.

2) if you can, try to check the air-conditioner outlet pipe to see if there is water flowing out when the air-conditioner is on. The rate and amount of water flow will tell you how bad the pipe is blocked and the seriousness of the leaking problem. The “enzyme treatment” may not work if the pipe is completely blocked.

3) it is best is you can get your air-conditioner technician to check it out and give it a proper cleaning to prevent further leakings.

Good Luck!

With best wishes,

choesf πŸ˜€


11 Responses so far »

  1. 1

    Louise said,

    hi choesf!

    What a life saver! It sure is a good thing you had a remedy. It has been a scorcher here too!!!

    I know I’ll never prepare this but I love the idea none the less. I’m going to share it though. I just happen to know someone who will probably be delighted to learn “the secret.”

    Thanks for sharing…


    • 2

      happyhomemaker88 said,

      Hi there, dear Louise πŸ˜€

      I’m really happy to see you here …. sorry for the late reply 😳 as my family had some guests staying with us for 2 weeks.

      Thank you for passing this tip on. I learned another trick from my air-cond service guy when he installed another air-cond in my living room recently – if we can access either the inlet or outlet pipe (at either end) where the water condensation is led out ===> cup our hand over the opening and blow hard. This helps to dislodge some gel-like stuff that has accumulated over time and blocked up the pipe, the creating the leak in the air-cond. Spraying the enzyme regularly to clean the air-cond coils will help to keep the pipe clear of the “gel”. πŸ’‘

      Take care and stay cool! πŸ˜‰

      With best wishes,

      choesf πŸ˜€


  2. 3

    Louise said,

    The weather has finally gotten a bit more normal around here, Choesf. Now it feels like Spring!!!

    I’ll keep your tips in mind, you just never know!!!

    Thanks for sharing…


  3. 4

    AK in MY said,

    When making the enzyme, is it possible to use frozen orange/lemon peels that I’ve saved from before? Or does the freezing process somehow interrupt the needed enzymes from the peels?


    • 5

      happyhomemaker88 said,

      Hi there and welcome, dear AK in MY πŸ˜€

      Yes, you can use frozen fruit peels, too. Whenever I use limes or lemons, I would just freeze them in a bag first before using them for enzyme making. πŸ’‘

      I find the frozen fruit peels do not release as much gas compared to fresh peels, but I’m not sure if that would affect the strength of the enzyme. 😳

      With best wishes,

      choesf πŸ˜€


  4. 6

    Airconditioner Leaking said,

    What you have done is very smart. Keep good maintenance on air conditioners are very important, also to clean and to keep it ventilating.


  5. 8

    air conditioner repair Dallas TX said,

    Maintaining our air conditioners clean is very important. These tips that you have provided in doing so are indeed very helpful. A lot of homeowners are surely thrilled to note that there are available information such as this that can be useful to them. Thanks for sharing.


  6. 10

    vi said,

    I was interested in the a/c cleaning. My window units always leak after about 5 years of use. Maybe I can try this on an older one. Also, my second batch of cleaner using the quicker yeast method and frozen peels did not build up as much gas or get foamy on top like the first batch of fresh peels. It also doesn’t smell as vinegary. Hopefully it will still clean. Pineapple is next. I love this stuff.


    • 11

      Hi there, dear vi πŸ˜€

      Yes, the enzymes are really wonderful to use for cleaning various stuff. I am not sure how it would work on a window unit as my aircond is the split type.

      Since I last posted this, I have found the the leak from my aircond was due to some jelly-like substance that had built up over the years at the section where the water from the cooling coils go to the outside. I observed what my aircond technician did to get rid of the jelly – he used a hose to connect that water outlet to a tap and used water to flush out the jelly and clear that blocked outlet.

      Hope the enzyme works well in your window unit. πŸ’‘

      With best wishes,

      choesf πŸ˜€


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