Loud buzz or hum from the back of the washer
The sound starts the moment water should enter and stops when filling pauses or finishes.
Start here: Check whether both supply valves are fully open, then inspect the washer inlet screens for sediment.
Washer noise troubleshooting
Washer Making Noise During Fill
Direct answer: If the noise happens only while the tub is filling, start at the water supply side before blaming the washer. A sharp hammering or chattering often comes from partly closed supply valves, kinked hoses, or clogged inlet screens. A steady loud buzz or screech right at the washer usually points to a worn washer water inlet valve.
Most likely: The most common cause is restricted water flow into the washer, not a spin or suspension problem.
Pin down exactly when the sound starts: hot fill, cold fill, both, or only at the very beginning. That one detail usually separates a house plumbing noise from a washer inlet-valve problem. Reality check: a brief soft hum during fill can be normal. Common wrong move: replacing random washer parts when the real issue is a half-open shutoff valve behind the machine.
Don’t start with: Do not start by replacing suspension parts, the drain pump, or the drive system if the noise stops as soon as filling stops.
Noise only during fillFocus on supply valves, hoses, inlet screens, and the washer water inlet valve.
Noise continues into wash or spinYou are likely on the wrong problem page; look at drive, pump, or suspension noise instead.
Last reviewed: 2026-04-04
What the fill noise sounds like
Rapid hammering or machine-gun chatter in the wall or hoses
The pipes or hoses jump when the washer calls for water, especially on cold fill.
Start here: Look for partly closed shutoff valves, kinked hoses, or very high flow restriction causing water hammer.
High-pitched squeal during fill
The washer fills slowly and the sound seems concentrated where the hoses connect to the washer.
Start here: Suspect clogged inlet screens or a washer water inlet valve straining against low flow.
Noise on hot only or cold only
One temperature setting is noisy while the other sounds normal.
Start here: Compare hot and cold supply flow separately to narrow it to one hose, one shutoff valve, or one side of the washer water inlet valve.
Most likely causes
1. Partly closed or restricted water supply valve
A shutoff valve that is not fully open can make the fill stream chatter, hammer, or whistle, and the washer may fill slower than usual.
Quick check: Turn both wall valves fully open, then run a small fill on cold and hot separately if your controls allow it.
2. Clogged washer inlet screens
Sediment from the plumbing collects at the washer hose inlets and makes the valve work harder, which often causes buzzing, squealing, or slow fill.
Quick check: Shut water off, remove the hoses at the washer, and inspect the small screens for grit or mineral buildup.
3. Kinked or internally restricted washer fill hose
A bent hose behind the machine can create noise and poor flow even when the shutoff valve is open.
Quick check: Pull the washer forward enough to inspect both hoses for sharp bends, flattening, or twisting.
4. Worn washer water inlet valve
If supply flow is good and the screens are clean, a valve solenoid or internal diaphragm can buzz loudly or screech during fill.
Quick check: Listen close to the valve area at the back of the washer; if the noise is clearly in the washer and one temperature side is worse, the valve is a strong suspect.
Step-by-step fix
Step 1: Confirm the noise is truly a fill noise
Washers make very different sounds in fill, agitation, drain, and spin. You do not want to chase the wrong system.
- Run a short cycle and listen for the exact moment the noise starts.
- Note whether the sound begins only when water enters, not when the basket moves or the drain pump runs.
- If your washer lets you choose temperature, test cold fill and hot fill separately.
- Stand near the back of the washer and then near the wall valves to tell whether the sound is in the machine or in the plumbing.
Next move: If the noise happens only during water entry, stay on this page and keep going. If the noise continues during spin, drain, or basket movement, this is likely a different washer noise problem.
What to conclude: You are separating water-supply noise from drive, pump, and suspension noise early, which saves a lot of wasted effort.
Stop if:
- You smell burning insulation or see smoke.
- Water starts leaking from a hose, valve, or the back of the washer.
- The washer has to be moved and the hoses or cord are too tight to do that safely.
Step 2: Open the supply valves fully and check the hoses
This is the fastest, safest fix and it catches a lot of fill noise calls.
- Unplug the washer before pulling it forward.
- Check that both washer shutoff valves at the wall are fully open, not halfway.
- Inspect both washer fill hoses for kinks, crushing, twisting, or rubbing against the cabinet.
- Straighten the hose path so the bends are broad, then plug the washer back in and test fill again.
Next move: If the noise drops off and fill sounds normal, the restriction was in the supply setup, not inside the washer. If the noise is still there, especially with slow fill, move on to the inlet screens.
What to conclude: A partly closed valve or pinched hose can make a healthy washer sound bad because the valve is being starved for water.
Step 3: Inspect and clean the washer inlet screens
Sediment-packed screens are one of the most common reasons a washer buzzes or squeals while filling.
- Turn off both water supply valves and unplug the washer.
- Place a towel under the hose connections at the back of the washer and remove the hoses from the washer inlets.
- Look into the washer water inlet ports for the small metal or plastic screens.
- If the screens are coated with grit or mineral debris, rinse or gently brush them clean without tearing or prying them out unless they are designed to be removable.
- Reconnect the hoses, open the valves slowly, check for leaks, and test fill again.
Next move: If the washer fills faster and the noise is gone or much quieter, the restriction was at the screens. If the screens are clean and the noise remains, compare hot and cold fill behavior more closely.
Step 4: Separate a house plumbing restriction from a bad washer valve
Before replacing a washer part, make sure the water supply itself is not the real source of the noise.
- With the washer unplugged and the supply valves off, disconnect one hose at a time from the washer.
- Aim the loose hose into a bucket and briefly open that shutoff valve just enough to judge flow and noise.
- Repeat for the other hose.
- If one side has weak flow, sputtering, or loud chatter right at the wall valve, the restriction is upstream of the washer.
- If both hoses have strong, steady flow but the noise returns only when connected to the washer, the washer water inlet valve moves to the top of the list.
Next move: If you find weak or noisy flow from the house side, address the supply valve or plumbing issue before replacing washer parts. If house flow is solid and the washer still buzzes or squeals during fill, plan on replacing the washer water inlet valve.
Step 5: Replace the washer water inlet valve if the supply checks out
Once the supply valves, hoses, and screens are ruled out, the inlet valve is the main washer-side part that causes fill noise.
- Unplug the washer and shut off both water supply valves.
- Access the rear inlet-valve area according to your washer's panel layout.
- Label or photograph the wire connections and hose positions before removal.
- Install the correct washer water inlet valve for your model, reconnect everything securely, and reopen the water slowly.
- Run a fill test on hot and cold and listen for normal water-entry sound without buzzing, squealing, or hammering.
A good result: If the washer fills at normal speed and the noise is gone, the valve was the problem.
If not: If a new valve does not change the noise, stop replacing parts and have the house shutoff valves or plumbing checked.
What to conclude: At that point the washer has been reasonably ruled out, and the remaining problem is usually supply-side restriction, pressure issues, or plumbing hammer outside the machine.
Replacement Parts
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FAQ
Is a humming noise during washer fill normal?
A soft brief hum can be normal when the washer water inlet valve opens. A loud buzz, squeal, chatter, or hammering sound is not normal, especially if fill is slow or the sound is new.
Why does my washer only make the noise on cold water?
That usually points to the cold side specifically: a partly closed cold shutoff valve, a kinked cold hose, debris in the cold inlet screen, or the cold side of the washer water inlet valve failing.
Can low water pressure make a washer noisy during fill?
Yes. Low or restricted flow can make the inlet valve buzz or squeal because it is trying to pull water through a restriction. Check the wall valves, hose condition, and inlet screens before replacing the valve.
What does water hammer sound like on a washer?
It usually sounds like rapid knocking, banging, or machine-gun chatter when the washer starts or stops filling. That sound is often in the pipes or wall, not just inside the washer cabinet.
Should I replace the washer water inlet valve right away?
Not first. Replace it after you confirm the supply valves are fully open, the hoses are not kinked, the inlet screens are clean, and the house-side flow is strong. That sequence avoids buying the wrong part.
Can a clogged inlet screen cause slow fill and noise at the same time?
Absolutely. That is one of the most common combinations. The washer takes longer to fill, and the restricted flow can create buzzing or a high-pitched squeal at the valve area.