Why Your Washing Machine Smells Bad and How to Clean It in Altrincham

Published September 2026 | Washing Machine Smells Bad - How to Clean It

Walking into your kitchen and being hit by a mouldy, damp smell from your washing machine is really unpleasant, and if it is the first time you have noticed it, it can feel like something has gone seriously wrong. You are not alone - it is one of the most common appliance complaints our engineers deal with across Altrincham and the wider Greater Manchester area. With the right information, you can work out what is causing it, sort a lot of it yourself, and know exactly when to call in a professional.

What Is Actually Happening Inside Your Washing Machine

The smell coming from your washing machine is almost always caused by a build-up of mould, bacteria, and biofilm inside the drum, the rubber door seal, or the detergent drawer. These microorganisms thrive in warm, damp environments and feed on the residue left behind by detergent, fabric softener, and dirty laundry.

One of the main reasons this has become more common in recent years is the shift towards lower-temperature washes. Washing at 30 or 40 degrees is better for your energy bills and for delicate fabrics, but it does not get hot enough to kill the bacteria that builds up inside the machine. Over time, that bacteria multiplies and produces the sulphur-like or musty smell that makes your laundry come out smelling worse than when it went in.

The rubber gasket around the front door on most front-loading machines - which is the standard design in most UK homes - is a particular problem area. Water and lint collect in its folds, and if you always close the door tightly after a wash, it never gets a chance to dry out. The same applies to the detergent drawer, where damp powder or liquid detergent residue hardens and festers over time.

Brands like Bosch, Hotpoint, Beko, Samsung, and LG all see this issue regardless of machine quality. It is not a sign that your machine is broken - it is a sign it needs a clean.

Is This an Emergency or Can It Wait?

A musty or eggy smell from your washing machine is not an emergency. You do not need to stop using it immediately or panic about a fault. In most cases, you can safely run a maintenance wash or do some cleaning before deciding whether you need professional help.

However, there are a few smells that should prompt you to act more quickly:

• A burning smell, like hot plastic or rubber. This could indicate an electrical fault or a problem with the motor or heating element. Stop using the machine and call an engineer.
• A strong chemical smell that is different from your usual detergent. This could mean a component is overheating internally.
• A smell combined with other symptoms - such as the machine not draining properly, making unusual noises, or leaving clothes soaking wet at the end of the cycle.

If it is just a musty, damp, or eggy smell and your machine is otherwise running normally, you have time to work through the checks below before reaching out to a local engineer.

What You Can Safely Check Yourself (With Zero Experience)

You do not need any tools or technical knowledge to do these checks. Our engineers recommend working through them in this order before calling anyone out.

1. Check and clean the door seal. Open the machine door and pull back the rubber gasket around the inside edge. Have a look in the folds - you will very likely find a build-up of black mould, limescale, and trapped debris like coins, hair grips, and fluff. Wipe it out thoroughly with a damp cloth and a small amount of washing-up liquid or white vinegar. Get right into all the folds.

2. Pull out and clean the detergent drawer. Most detergent drawers come out completely if you pull them firmly while pressing a small release tab - check your manual if you are not sure where this is. Rinse it under hot water and scrub away any hardened detergent residue with an old toothbrush. Leave it to dry before putting it back.

3. Check and clean the pump filter. The pump filter is usually located behind a small flap at the bottom front of the machine. Place a towel on the floor first because some water will come out when you open it. Unscrew it slowly, let the water drain, and remove any debris - fluff, coins, hairpins - that has collected. A blocked filter causes both drainage problems and persistent bad smells.

4. Run a hot maintenance wash. With an empty drum, set your machine to its hottest cycle (typically 90 degrees) and add a washing machine cleaner tablet or a cup of white vinegar directly to the drum. Some machines, including certain Bosch and Samsung models, have a dedicated drum-clean programme - use it if yours does. The heat kills bacteria and helps to flush out any remaining residue.

5. Leave the door and drawer open between washes. This is the simplest habit change and one of the most effective. Leaving the door slightly ajar after every wash allows the drum to dry out properly. Do the same with the detergent drawer. This alone will significantly reduce the chance of the smell returning.

If you have worked through all five of these steps and the smell persists after a couple of washes, it is time to call an engineer.

How to Find a Trustworthy Engineer in Altrincham

Finding a reliable appliance repair engineer in Altrincham does not need to be a lengthy process, but it is worth taking a few minutes to do it properly rather than calling the first number you come across.

Start by using Voltrade's GoFIX diagnostic tool, which lets you describe your machine's symptoms and get an assessment before anyone comes out to you. This means you go into any engineer visit with a clearer idea of what the problem might be, which makes it much easier to judge whether the quote you are given is fair.

When looking for local engineers, here is what to prioritise:

• Fixed-price or transparent quoting. A good engineer will give you a clear quote before starting work. Be wary of anyone who will not give you even an estimate until they are already in your home.
• Reviews from local customers. Look for engineers with reviews from people in Altrincham or nearby parts of Greater Manchester. Consistent positive feedback over a period of time is a better indicator than a handful of recent five-star reviews.
• Experience with your brand. If you have a Beko, LG, or Hotpoint machine, ask whether the engineer regularly works on that brand. Parts availability and familiarity with common faults varies considerably between manufacturers.
• No fix, no fee policies. Many reputable local engineers offer this, and it is a good sign they are confident in their diagnosis before they start.

Where possible, avoid calling national chains for a routine appliance issue. They typically charge more for the same work, and you will often get a faster, more personal service from a local engineer who knows the area.

What a Repair Visit Looks Like (So You Know What to Expect)

If you have never had an appliance engineer to your home before, knowing what to expect makes the whole thing much less daunting.

When the engineer arrives, they will ask you to describe the problem - when you first noticed the smell, whether anything changed around that time (new detergent, different wash temperatures), and whether you have noticed any other changes in how the machine runs. Be as specific as you can. Even details that seem minor can help with diagnosis.

They will then inspect the machine, starting with the areas most likely to cause smells: the door seal, the detergent drawer, the drum, and the pump filter. They may run a short cycle to observe the machine in operation and check for any drainage or heating issues that could be contributing to the problem.

You will receive a diagnosis and a quote before any work begins. A clear explanation of what is causing the smell and what is needed to fix it is what you should expect. If a part needs replacing - a new door seal, for example - the engineer should break down the cost of parts and labour separately so you know what you are paying for.

The repair itself is typically completed in the same visit for most smell-related issues. Drum cleaning, gasket replacement, and filter work are all jobs that take between 30 minutes and a couple of hours. You will not normally need to leave the machine with anyone or wait days for a return visit.

Typical Costs - So You Are Not Caught Off Guard

Appliance repair costs in Altrincham are broadly in line with Greater Manchester averages. Here is a realistic guide to what you might pay:

• Call-out fee: typically 50 to 80 pounds. Some engineers waive this if you go ahead with the repair.
• Drum cleaning and maintenance service: typically 60 to 90 pounds including labour.
• Door seal (gasket) replacement: typically 100 to 200 pounds depending on the brand. LG and Samsung seals tend to cost more than those for Beko or Hotpoint due to parts pricing from the manufacturer.
• Pump filter replacement: typically 80 to 150 pounds if the filter itself is damaged and needs replacing rather than just cleaning out.
• Heating element replacement (if the machine is not reaching temperature, which commonly contributes to bacterial build-up): typically 100 to 180 pounds.

One thing to factor in when deciding whether to repair or replace: if your machine is more than eight years old and the repair cost is more than half the price of a comparable new model, it is worth having a direct conversation with your engineer about whether a replacement makes more financial sense. A good engineer will tell you this rather than push you towards an expensive repair on an ageing machine.

Questions You Should Ask Your Engineer

Going into a repair visit with a few questions prepared means you are less likely to feel put on the spot and more likely to come away with the information you actually need. These are the ones our engineers think are most worth raising:

1. "What caused this, and how do I stop it happening again?" The best engineers will not just fix the problem - they will help you understand what led to it and what maintenance routine will prevent a repeat.
2. "Is this machine worth repairing at its age?" Ask for an opinion. A good engineer will give you a considered answer rather than just taking the job regardless.
3. "Are there any other issues you noticed while you were looking?" Engineers often spot early warning signs of other faults while inspecting a machine. It is worth knowing about them before they become urgent.
4. "What is the parts and labour warranty on this repair?" Reputable engineers typically offer at least a 30-day guarantee on parts and labour, and many offer 90 days or more.
5. "Do you carry parts for this brand?" Particularly relevant if you have an LG, Bosch, or Samsung machine - ask whether they have common parts in the van or whether a second visit might be needed.

First-Timer Questions

Why does my washing machine smell even though I clean it regularly?

Most people clean the drum but miss the two worst offenders: the rubber door seal and the pump filter. The gasket collects water, lint, and detergent residue in its folds and is almost impossible to clean without pulling it back manually. The pump filter, usually behind a small flap at the bottom front of the machine, traps debris that breaks down over time and produces a strong smell. Add both areas to your regular cleaning routine and you should notice a significant difference within a few weeks.

How often should I run a maintenance wash?

Our engineers generally recommend running a hot maintenance wash at 90 degrees with an empty drum and a machine cleaner once a month. If you do a lot of low-temperature washes or regularly wash heavily soiled items, once a fortnight is better. Think of it the same way you think about descaling your kettle - it is routine upkeep rather than a response to a problem. Most modern machines from Hotpoint and Bosch include a drum-clean programme specifically for this purpose.

Can I use white vinegar and bicarbonate of soda to clean my washing machine?

White vinegar is effective for cutting through limescale and detergent residue, and it is safe to use in most machines - add it directly to the drum and run a hot empty cycle. Bicarbonate of soda can be used in the same way. Do not use both at the same time though - they neutralise each other and the fizzing reaction does not produce any useful cleaning effect. Use one or the other, or invest in a proprietary washing machine cleaning tablet, which many of our engineers prefer for reliability.

Is it safe to keep using a smelly washing machine?

In most cases, yes - a musty or mouldy smell does not usually mean the machine is unsafe to operate. However, it does mean bacteria and mould spores could be transferring onto your laundry during the wash cycle, which is not ideal for items like baby clothes, towels, or anything belonging to someone with a skin condition or allergy. It is worth sorting the problem sooner rather than later rather than running the machine indefinitely with the issue unresolved.

When should I call an engineer rather than trying to fix it myself?

Call an engineer if the smell persists after you have cleaned the seal, the detergent drawer, and the filter, and run several hot maintenance washes over a couple of weeks. Also call one immediately if the smell is burning, chemical, or electrical rather than musty - these point to a mechanical or electrical fault that needs professional diagnosis. If you are unsure which category your situation falls into, Voltrade's GoFIX diagnostic tool can help you assess the problem before you commit to booking a visit.

Frequently Asked Questions

Why does my washing machine smell like rotten eggs?

A rotten egg or sulphur smell is typically caused by bacteria that has built up in the drum, door seal, or pump filter. This bacteria produces hydrogen sulphide as it breaks down organic matter - a gas that smells strongly of rotten eggs. Running a hot maintenance wash at 90 degrees with a machine cleaner will usually eliminate it, but if the smell persists after two or three maintenance washes, an engineer should check whether the filter or door seal needs replacing rather than just cleaning.

Can a smelly washing machine affect your health?

A machine with mould and bacteria growing inside it can transfer those microorganisms onto your clothes and towels during the wash cycle. For most people this causes no problems, but for those with allergies, asthma, eczema, or weakened immune systems, it can cause irritation or skin reactions. If someone in your household is particularly sensitive to these things, it is worth treating the problem promptly rather than letting it continue for weeks or months.

Does leaving the washing machine door open damage it?

No. Leaving the door slightly ajar between washes is actively recommended by most appliance manufacturers, including Bosch, Beko, and Hotpoint, as it allows the drum to air out and dry properly between cycles. A door that is permanently closed after every wash traps moisture and creates the ideal conditions for mould growth. There is no mechanical risk to the machine from leaving it open when it is not in use - it is simply good maintenance habit.

How long does a washing machine cleaning visit take in Altrincham?

Most appliance engineers in Altrincham will complete a cleaning and maintenance visit in one to two hours. If a part such as a door seal or pump filter needs replacing rather than just cleaning, the visit may take a little longer, but most common repairs are completed on the same visit. Our engineers carry commonly needed parts for brands like Hotpoint, Beko, and LG to minimise the chance of a second visit being required.