Whitegoods Help article

Washing not getting clean in washing machine

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Quick Answer

Most cases of poor wash results are caused by user factors rather than machine faults – overloading, insufficient detergent, the wrong programme, or the wrong detergent type. Actual machine faults that cause poor cleaning while the cycle appears to complete normally are uncommon, but do occur. Work through the user factors first before concluding the machine is at fault.

When laundry comes out dirty, marked, or poorly rinsed, the washing machine is the obvious suspect. But in the majority of cases the machine is working correctly and the cause lies elsewhere. Eliminating the user factors below takes minutes and may resolve the problem immediately.

Possible Machine Faults Causing Poor Wash Results

There are relatively few washing machine faults that allow the cycle to complete apparently normally while producing poor results. These are the main ones to check if user factors have been eliminated.

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Machine heavily contaminated internally

A significant build-up of grease, black mould, or slime inside the drum and drum seal can deposit marks on laundry during the wash cycle. If laundry is coming out with greasy or dark marks that were not present before washing, the machine itself may be the source. See our guide on grease, slime, and black mould inside washing machines.

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Drum not turning

If the drum is stationary or barely moving during the wash cycle, laundry will not be agitated and cleaning will be very poor. A drum that is not turning visibly during wash is a clear sign of a belt or motor fault. See our guide on washing machine drum not turning.

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Heater not working

Some machines will continue to wash and complete the cycle normally even if the heating element has failed – without displaying an error code. The wash runs at cold temperature, producing noticeably poorer results, particularly on heavily soiled items. See our guide on washing machine not heating up water.

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Partial drain blockage affecting rinsing

A partial blockage in the pump or filter may allow the machine to drain slowly enough to appear complete, while leaving enough dirty water to compromise the rinse cycles. Laundry comes out feeling soapy or with residue. See our guide on washing machine not draining properly.

User Factors: Check These Before Assuming a Machine Fault

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Overloading the drum

A full drum prevents laundry from moving freely against itself and from circulating through the detergent solution. Cleaning depends on physical agitation and contact – an overloaded machine cannot provide this. See our guide on how to load a washing machine correctly.

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Insufficient or poor quality detergent

Using too little detergent is one of the most common causes of poor results – particularly in hard water areas where the water itself works against the detergent. Use good quality detergent at the dose recommended on the packet for the soiling level and water hardness.

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Using the wrong programme

Quick wash and economy programmes use lower temperatures and shorter cycle times – they are designed for lightly soiled or fresh laundry only. Using them for dirty clothes will produce poor results. For genuinely dirty laundry, a full cotton programme at the appropriate temperature is needed. See our guide on washing at 30 degrees – what you need to know.

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Option buttons reducing water or temperature

Economy or water-saving options reduce cleaning effectiveness and are designed for light soiling and smaller loads – not for a full drum of dirty laundry. Read the instruction manual to understand what each option does before using it. Related guide: washing machines not rinsing properly.

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Using the wrong type of detergent

Biological detergent works best at lower temperatures – its enzymes are deactivated by heat – but needs adequate cycle time. Non-biological detergent is less effective at low temperatures. Liquid and colour-safe detergents contain no bleaching agents, so whites washed exclusively in these will gradually turn grey. See our guide on choosing the right type of detergent.

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Detergent in the wrong compartment

If powder or liquid is placed in the pre-wash or fabric softener compartment rather than the main wash compartment, it is released at the wrong point in the cycle – either too early or only on the rinse. This also exposes the heating element to limescale build-up if the detergent that normally inhibits it is absent at the correct stage. See our guide on soap dispenser or drum: where to put the detergent.

What If the Machine Is Simply Not Very Good at Washing?

Independent testing has found meaningful variation in washing performance between different washing machine models and brands. Some machines genuinely wash significantly better than others, even at equivalent price points. If all user factors have been checked and the machine is working mechanically – completing cycles at normal speed with no error codes, heating the water, and draining properly – but results are still poor, the machine itself may simply perform below average.

This is particularly likely when switching from one machine to another. A previous machine may have produced better results not because of any user error, but because it washed more effectively.

Independent washing performance data

Which? carries out standardised washing performance testing across a wide range of machines (full results require a subscription). This kind of comparative data is the most useful guide when considering whether a machine is genuinely underperforming.


Need a Repair or Diagnosis?

If machine faults rather than user factors appear to be the cause, an engineer visit may be needed to confirm whether the heater, pump, or drum mechanism is at fault.

Frequently Asked Questions

Why is my washing machine not cleaning clothes properly?

The most common causes are user factors: overloading the drum, using too little or poor quality detergent, selecting an inappropriate programme (such as a quick wash for heavily soiled items), or using the wrong type of detergent for the wash temperature. Machine faults that affect cleaning while the cycle appears normal include a failed heater, a drum that is not turning, or internal contamination depositing marks on laundry.

Could the heater not working cause poor wash results?

Yes. Some machines continue the wash cycle at cold water temperature without displaying an error code if the heating element fails. The cycle completes in normal time but produces noticeably poor results, particularly on greasy or heavily soiled items. If results have suddenly deteriorated without any other obvious change, the heater is worth checking.

My new machine doesn’t wash as well as my old one – is something wrong?

Not necessarily a fault, but possibly genuine underperformance. Independent testing has found significant variation in washing performance between machines. It is also worth checking whether anything else has changed – detergent brand, dosage, programme selection, or load type. If all these match the previous routine and results are still worse, the machine may simply be a less effective washer than the previous one.

Can overloading really cause poor wash results?

Yes, significantly. Laundry needs room to move freely through the wash water, and items need to rub against each other for mechanical cleaning action. An overloaded drum prevents this movement. Detergent also needs space to dissolve and circulate. An overloaded machine may appear to wash normally but produces measurably worse cleaning results.

Last reviewed: April 2026.

Discussion

33 Comments

Grouped into 20 comment threads.

Matt 7 replies Hi, hoping someone can assist because I'm going crazy with this issue, sorry for the long post. Ok I've always done my own washing, drying, and ironing and never in 20 yrs had an issue with clothes not washing properly using a variety of washing machines over the years, whether they have been cheap, expensive, old, or new. I moved in with my girlfriend about 2 yrs ago and within a week I noticed when I came to iron my work shirts there were two types of stains appearing. Some had black marks on, like smears or splodges, not like ink but personally I thought like mascara (cue domestic incident!), other shirts had marks on that I can only describe as clear grease spots and patches ranging from a few mm diameter to an inch diameter. Occasionally the washes were fine but only maybe 3 out of 10 times, I put this down to my girlfriends 8 yr old washer and coped with it and replaced the shirts as necessary. Three months ago we moved into our newbuild home, very expensive kitchen and utility room with top of the line (price-wise anyway) integrated Zanussi appliances. Within a couple of washes the same issue! All new drains/pipes/washer, really dirty clothes are never washed e.g. muddy/heavily soiled, things like tea towels, bath towels are washed separately, colours are washed separately to white/delicates, the missus uses 40 degrees, and fairy non bio liquid in the little cup. I always used 30 degrees and various top brand powdered detergents and never in 20 yrs had a problem, since we moved the issue is a lot worse, this year I've actually gone through 9 shirts, almost one a month! It's that bad that last weekend I bought two new shirts, washed them and they're both ruined with black marks. What can this be? The missus swears blind its not makeup, I have no idea what it could be but its driving me crazy and costing me a fortune! We've always both done monthly maintenance cycles, leave the washing machine door open for the evening after use, and check the seal/door for grime/gunk build-up. Any ideas what this could be?

Hi, hoping someone can assist because I’m going crazy with this issue, sorry for the long post.

Ok I’ve always done my own washing, drying, and ironing and never in 20 yrs had an issue with clothes not washing properly using a variety of washing machines over the years, whether they have been cheap, expensive, old, or new. I moved in with my girlfriend about 2 yrs ago and within a week I noticed when I came to iron my work shirts there were two types of stains appearing. Some had black marks on, like smears or splodges, not like ink but personally I thought like mascara (cue domestic incident!), other shirts had marks on that I can only describe as clear grease spots and patches ranging from a few mm diameter to an inch diameter. Occasionally the washes were fine but only maybe 3 out of 10 times, I put this down to my girlfriends 8 yr old washer and coped with it and replaced the shirts as necessary.

Three months ago we moved into our newbuild home, very expensive kitchen and utility room with top of the line (price-wise anyway) integrated Zanussi appliances. Within a couple of washes the same issue! All new drains/pipes/washer, really dirty clothes are never washed e.g. muddy/heavily soiled, things like tea towels, bath towels are washed separately, colours are washed separately to white/delicates, the missus uses 40 degrees, and fairy non bio liquid in the little cup. I always used 30 degrees and various top brand powdered detergents and never in 20 yrs had a problem, since we moved the issue is a lot worse, this year I’ve actually gone through 9 shirts, almost one a month! It’s that bad that last weekend I bought two new shirts, washed them and they’re both ruined with black marks. What can this be? The missus swears blind its not makeup, I have no idea what it could be but its driving me crazy and costing me a fortune!

We’ve always both done monthly maintenance cycles, leave the washing machine door open for the evening after use, and check the seal/door for grime/gunk build-up. Any ideas what this could be?

Andy Trigg (Whitegoodshelp)

Likely replying to Matt

Hello Matt. If the problems have been on multiple washing machines it’s fairly safe to assume it’s something to do with how you use the washing machines. Two things you mention jump out at me as explanations, “I always used 30 degrees” and, “the missus uses 40 degrees, and fairy non bio liquid “. These are the two most common causes of a nasty build up of slime, grease, gunge and bacteria inside a washing machine. You need to wash towels and cotton bedding on 60 degree washes to kill bacteria, underwear should be washed exactly as advised on their wash labels. 30 and 40 degrees aren’t hot enough. Regular maintenance washes will help but they can only do so much against a relentless build up.

Also, liquid detergent contains no bleaching agents, that’s fine for being kind to colours but combines with mostly low temperature washes it can be disastrous for washing machines.

Try to find time to read all of the related articles I’ve linked to on this article and some of the links within them to get a full understanding.

Matt

Likely replying to Andy Trigg (Whitegoodshelp)

Hi Andy, thanks for your reply and I’ve since read through the articles. Some things I’ve never really though about to be honest So yes I’ll be trying out your suggestions, also we’ve just ordered some washing powder, the missus finally caved in since I showed her your articles on liquid! Hopefully I’ll start to see an improvement, thanks a lot.

Jean

Likely replying to Andy Trigg (Whitegoodshelp)

Dear Andy,
I’ve a Bosch Logixx9 Vario Perfect. It’s fairly new – possibly less than a year old. It’s been working fine, without any problem. We came back from 2 weeks holiday (always leaving the door of the washing machine open) and since then the washing machine doesn’t wash the clothes clean and leaves a smell on the clothes. I haven’t changed anything about how we wash our clothes – same setting, same detergent. The drum turns and it obviously spins as the clothes come out as normal on the 1600 spin. I’ve done an empty 90 degrees wash and used household white vinegar to do a clean but the next wash was just the same. Any thoughts? I’m now at a loss what to do.

Jean

Likely replying to Andy Trigg (Whitegoodshelp)

Hi Andy,

I can try to do more high temperature empty washes again. The machine itself (from what I can see) doesn’t have mold or grease in the rubber area of the front opening or in the soap dispenser. Is there somewhere I can open to have a look – I don’t know where the filter is try that – it’s obviously not accessible from the front.

I also did pour some drain cleaner down the u-bend to see if that helped.

I don’t see anything other than more hot washes to try to clean it which relate to my problem. It’s more the fact that the clothes aren’t getting clean than a problem of a smelly washing machine. I’ll try more hot washes and let you know. Any other thoughts in the meantime would be appreciated.

Many thanks Andy – it’s great to be able to put such problems to someone with experience…and actually get fast responses – much appreciated! Thank you!

Andy Trigg (Whitegoodshelp)

Likely replying to Jean

Thanks Jean. The only other thing I can suggest is to slowly go through all the points in my article above, I can’t think of anything else other than some fault on the machine. Make sure no option buttons have accidentally been selected such as economy or half load, quick wash etc. which may impact on wash cycle’s efficiency.

Jean

Likely replying to Andy Trigg (Whitegoodshelp)

Dear Andy,
I persevered with hot washes and bough soda crystals and specialist cleaning powder for washing machines and it seems to be getting better. I still don’t understand why it happened so quickly – could it have been because we didn’t use the machine for 2 weeks (although leaving the door open)?
Many thanks for your help – much appreciated.

mark chetwynd 2 replies on going problem since June clothes smell as though they have been washed in a sewer i have had senior engineers out 5 times i have had a new drum a new pump new circuit board put in changed to powder in all i have used 10 washer cleansers (hotpoints own) and still the washing stinks what other thing can cause the horrible smell at my wits end now.

on going problem since June clothes smell as though they have been washed in a sewer i have had senior engineers out 5 times i have had a new drum a new pump new circuit board put in changed to powder in all i have used 10 washer cleansers (hotpoints own) and still the washing stinks what other thing can cause the horrible smell at my wits end now.

Andy Trigg (Whitegoodshelp)

Likely replying to mark chetwynd

Hello Mark, you don’t say how old the machine is. If it’s quite old it could be just covered in gunge everywhere – in all the hoses and all over inside. If it isn’t too old, and it’s had new pump and new drum it’s less easy to explain away. See if these articles help – Get rid of washing machine smells | Smells caused by plumbing

Christine

Likely replying to Andy Trigg (Whitegoodshelp)

Hi Andy,
My Indesit washing machine is A rating, so saves water and energy. However, I find the quality of wash quite awful. The machine is 3 years old now. On the first year of having it I called the engineer out and he said nothing was wrong. I do monthly 90 degree washes using a limescale remover, I have no issues with bad smells. Wash at 40/60 degrees and clothing still comes out stained.I don’t overfill. I have to hand wash all stained before putting into the machine. Baby and toddler clothes with stubborn orange stains. When I bought it I checked customer reviews and everyone says how brilliant it is whilst I would give a 1/5 rating. Could it be plumbing issues, but it spins and drains well.

Lesley Payne 1 reply I have a Beko washing machine which I've had for a few years now. My clothes aren't clean, just normal dirt not tough stains. I always use a 30 deg wash and a non bio liquid detergent. There is barely any soap/bubbles apparent when washing and the clothes feel and look like they've just been rinsed through in cold water. I clean it regularly with either white vinegar or Dr Beckman on a hot wash cycle. Also a constant drain smell when I think it is filling up though the machine itself doesn't smell. Help!

I have a Beko washing machine which I’ve had for a few years now. My clothes aren’t clean, just normal dirt not tough stains. I always use a 30 deg wash and a non bio liquid detergent. There is barely any soap/bubbles apparent when washing and the clothes feel and look like they’ve just been rinsed through in cold water. I clean it regularly with either white vinegar or Dr Beckman on a hot wash cycle. Also a constant drain smell when I think it is filling up though the machine itself doesn’t smell. Help!

Andy Trigg (Whitegoodshelp)

Likely replying to Lesley Payne

Hi Lesley. Always using 30 degree washes and liquid detergent is perfect for making a very smelly washing machine. The chances are it’s covered in horrible slime and gunge inside, which may be very difficult to remove. I would ditch the liquid detergent, and use 40 degree washes unless extremely lightly soiled, wash towels and cotton bedding at 60 degrees and do the boil maintenance wash every several weeks.

Jean 1 reply I have a Miele washing machine - worked perfected for years, but lately whites washed at 60 degrees are coming out with yellow staining.

I have a Miele washing machine – worked perfected for years, but lately whites washed at 60 degrees are coming out with yellow staining.

Andy Trigg (Whitegoodshelp)

Likely replying to Jean

Hello Jean, it’s not a common issue but you would need to eliminate all of the possible causes in the article above before looking at anything else as a cause.

Angela Winter 1 reply Hi I have an integrated Hotpoint washing machine 6 months old. My problem is ONLY on the wool wash it is leaving flaky bits/ soap residue on the clothes. Even if I put the extra rinse button on, it doesn,t solve it, I have to wait until end of cycle and re-rinse, very frustrating. I don't have this problem with any of the other programmes. The machine is cleaned regularly and I am not overloading it. Can anyone shed any light on this?

Hi I have an integrated Hotpoint washing machine 6 months old. My problem is ONLY on the wool wash it is leaving flaky bits/ soap residue on the clothes. Even if I put the extra rinse button on, it doesn,t solve it, I have to wait until end of cycle and re-rinse, very frustrating. I don’t have this problem with any of the other programmes. The machine is cleaned regularly and I am not overloading it. Can anyone shed any light on this?

Andy Trigg (Whitegoodshelp)

Likely replying to Angela Winter

Hi Angela. I’m assuming you are using the woollens wash cycle and not just referring to when you wash the woollens? It’s very unusual to have problems with just one type of laundry, especially woollens. The woollens wash should have a slower spin, make sure you aren’t spinning them faster than they should be spun. Also make sure the detergent used is appropriate for woollens and that the wash labels say they can be washed in a washing machine as many modern garments have very restrictive wash instructions and many are hand wash only.

Claire 1 reply Hi I have a hotpoint washing machine. I have been using it for over a year now and still haven't had a wash where all the clothes have been cleaned correctly. At first I bough it was he washing powder I was using so I have tried various different brands. This didn't help. I have changed the type of wash cycle and still no different. The last 3 washes I have changed the spin to the intense option and although the clothes are now smelling fresher the stains are still there (although I think the clothes are fresher as I have added freshening balls to the drum). A new problem we are now having is the smell of sulphur coming from the washing machine pipes but I don't know how to get rid of it.

Hi I have a hotpoint washing machine. I have been using it for over a year now and still haven’t had a wash where all the clothes have been cleaned correctly. At first I bough it was he washing powder I was using so I have tried various different brands. This didn’t help. I have changed the type of wash cycle and still no different. The last 3 washes I have changed the spin to the intense option and although the clothes are now smelling fresher the stains are still there (although I think the clothes are fresher as I have added freshening balls to the drum). A new problem we are now having is the smell of sulphur coming from the washing machine pipes but I don’t know how to get rid of it.

Andy Trigg (Whitegoodshelp)

Likely replying to Claire

Hello Claire. A smell of sulphur coming from the washing machine pipes would imply that it is very dirty inside with an accumulation of grease gunge. This is caused as described in my article above by low-temperature washes and especially if combined with liquid detergents which contain no bleaching agents. Which wash cycle have you mostly used and which detergent?

Check this article too washing machine smells

Andy Trigg (Whitegoodshelp) 0 replies That's mentioned in the article Robert, under the possible washing machine faults, there's a link to further info too.

That’s mentioned in the article Robert, under the possible washing machine faults, there’s a link to further info too.

robert hatfield 0 replies When running a wash in my indesit machine it does,nt seem to heat the water. Then the clothes come out at the end still smelling. How,s this?.....Bob

When running a wash in my indesit machine it does,nt seem to heat the water. Then the clothes come out at the end still smelling. How,s this?…..Bob

Andy Trigg (Whitegoodshelp) 0 replies That's good news Jean. I would suspect leaving it for 2 weeks might have allowed the gunge to dry out and flake off during the proceeding washes.

That’s good news Jean. I would suspect leaving it for 2 weeks might have allowed the gunge to dry out and flake off during the proceeding washes.

Rose 0 replies Hi there. I have the same problem as the person above regarding the wool cycle on my indesit (2 yrs old). We use powder detergent and maintenance wash the machin regularly. The wash usually works fine. But when I do a wool/handwashing cycle with Ecover wool and silk liquid, clothes come out covered in bits of gunk and flakes. Gross! Any advice?

Hi there. I have the same problem as the person above regarding the wool cycle on my indesit (2 yrs old). We use powder detergent and maintenance wash the machin regularly. The wash usually works fine. But when I do a wool/handwashing cycle with Ecover wool and silk liquid, clothes come out covered in bits of gunk and flakes. Gross! Any advice?