Post By Admin
July 6, 2026Your kitchen tap used to flow strong and steady. Now it’s sputtering, spraying sideways, or trickling out at half power, and it feels like it happened overnight. Before you panic or start dialing a plumber, take a breath: this is almost always a clogged aerator, and fixing it costs nothing and takes about five minutes.
Below, we’ll walk through exactly how to remove, clean, and reinstall your tap aerator so your water flow goes back to normal today.
What Is a Tap Aerator, and Why Does It Get Blocked?
That little fitting screwed onto the very tip of your tap does more work than most people realise. It mixes air into the water stream, which cuts down on splashing, softens the flow, and even helps you use less water without noticing the difference.
Inside, it’s just a tiny mesh screen and a few small holes (which is simple, but easy to clog).
The exact design varies, since there are different types of taps and fittings. But the basic problem is the same across the board: blocked.
There are three usual suspects.
1. Mineral scale from hard water
If you’re in an area with hard water, calcium and other minerals slowly build up on the mesh every time water passes through.
This is one of the most common culprits, and it’s worth reading up on removing calcium buildup on your taps if you notice white, chalky residue when you take the aerator apart.
2. Loose sediment or grit
Sometimes the problem isn’t gradual, it’s sudden. If there’s been mains water work nearby, or your pipework is getting on in years, loose sediment and grit can get knocked free and travel straight into your aerator, clogging it almost overnight.
3. General debris
And sometimes it’s nothing dramatic at all, just everyday use. Tiny particles naturally floating in the water supply collect in those fine holes over time, gradually choking off the flow until one day you notice the difference.
Signs Your Tap Aerator Needs a Clean
Not sure if your aerator is actually to blame? Here some signs:
- Weaker flow from just one tap. If every tap in the house is fine except this one, it’s almost certainly the aerator, not your water supply.
- Spraying at odd angles or extra splashing. A sign water is being forced around a blockage instead of through it evenly.
- Visible crust on the spout tip. White or greenish build-up around the opening is a dead giveaway of mineral scale.
- Hissing or spitting sounds. This is water struggling to push past trapped debris when you turn the tap on.
What You’ll Need
Good news: you probably already have everything required for this job sitting around the house. Here’s what you need:
- A cloth or rag. Wrap it around the tap while you work to protect the finish, and it’ll catch any small parts or washers so they don’t disappear down the drain.
- Small pliers or an adjustable spanner. Only needed if the aerator is stuck and won’t turn by hand; most can be loosened with a firm grip.
- An old toothbrush. Perfect for scrubbing built-up scale and debris out of the fine mesh without damaging it.
- White vinegar and a small bowl. For soaking the aerator and dissolving mineral deposits before you scrub.
How to Clean a Tap Aerator, Step by Step
With your tools ready, here’s exactly how to bring that flow back to normal.
Step 1: Remove the aerator
Start by closing the tap fully. Grip the aerator and unscrew it anti-clockwise by hand. If it won’t budge, wrap it in a cloth to protect the finish and use pliers or a spanner for extra leverage.
As you remove it, take note of whether it’s a male or female fitting. This determines how it screws back in, so it’s worth remembering.
Step 2: Take it apart and rinse
Carefully separate the mesh screen and rubber washer from the housing. Rinse each piece under running water to clear away any loose debris before you move on.
Step 3: Soak in vinegar
Pour white vinegar into your bowl and submerge all the parts. For light buildup, around 30 minutes should do the trick. If there’s heavier limescale, let everything soak for a few hours, or leave it overnight for best results.
Step 4: Scrub and rinse again
Grab the old toothbrush and gently scrub any remaining scale off the mesh screen, paying close attention to the fine holes. Once it looks clear, rinse everything thoroughly to make sure no vinegar or loosened grit is left behind.
Step 5: Reassemble and test
Put the washer, mesh, and housing back together in the same order they came out. Screw the aerator back on by hand—tighten it snugly, but don’t force it, as overtightening can crush the washer and cause a leak around the joint.
How Often Should You Clean Your Tap Aerators?
There’s no strict rule here, it really depends on your water and your home. As a general habit, cleaning every couple of months is sensible, and worth doing more often in hard water areas or older properties with ageing pipework.
The easiest approach, though, is to skip the schedule altogether: clean the aerator when the flow feels weaker than usual, rather than waiting for a full blockage.
Working this into your regular plumbing maintenance routine will keep every tap in the house running smoothly.
Should You Clean It, or Just Replace It?
Sometimes cleaning isn’t worth the hassle. A replacement aerator costs very little, so if the housing looks corroded, cracked, or clogs up again just weeks after cleaning, it’s usually easier to swap it out than keep repeating the process.
When you head out to buy one, bring the old aerator with you—thread sizes and fittings vary between taps, and matching it in person saves you a wasted trip home with the wrong part.
When a Blocked Aerator Isn’t the Real Problem
Cleaned the aerator and still no improvement? That’s a strong sign the aerator was never the actual problem.
It’s also worth checking what kind of issue you’re actually dealing with. If your tap is dripping rather than running weak, that points to a worn washer or cartridge instead, which is a separate fix (see our guide on changing a tap washer).
Once you’ve ruled out the aerator and it’s clear something else is going on, it’s time to stop guessing and bring in a professional.
Persistent low pressure, drips, or issues across multiple taps are often signs of a deeper plumbing issue that’s best diagnosed properly, our leaking taps and pipes service can help track down and fix the real cause.
FAQ
Do you need to turn off the water to clean a tap aerator?
Generally no, since you’re only removing the small fitting at the tip, not the tap itself. That said, it’s still worth closing the tap fully first, just to avoid an unexpected faceful of water.
Are all tap aerators the same size?
No. They come in different thread sizes and either male or female fittings. Match a replacement to your old part, or measure the spout yourself if you’re unsure.
What if the aerator is stuck and won’t unscrew?
Wrap it in a cloth and use pliers or a spanner for extra grip. A penetrating spray can help loosen it too, but it won’t dissolve mineral buildup on its own—you’ll still need vinegar for that.
Why is my tap spraying sideways after I cleaned the aerator?
This usually means it wasn’t screwed back on straight, or the washer is missing or misaligned. Remove it, check everything is seated properly, and reassemble.
Is weak water flow always the aerator’s fault?
Not always. If cleaning doesn’t help, or the whole house seems affected, the cause is more likely elsewhere in the plumbing.
Conclusion
A weak, spitting tap is rarely anything serious—most of the time, it’s a five-minute fix that costs nothing but a bit of vinegar and elbow grease. Building a quick clean into your routine every couple of months keeps water flowing steadily.
Still not flowing right after a clean, or noticing the problem in more than one tap? That’s usually a sign of something more serious.
Our team handles leaking taps and pipes services across Melbourne every day, honest advice, no call-out surprises. Give us a call on 0488 885 122 or book a time online.
About the Author
From unclogging the toughest drains to repairing leaking toilets, Ricky is a seasoned plumber who has brought his craftmanship to homes across Melbourne. He is passionate about sharing plumbing tips just as much as he is about fixing your plumbing issues. So, when your taps or pipes begin leaking, you know who to call.
