Dishwasher Not Draining in Worcester - What to Check and How to Make It Last

Published September 2026 | Dishwasher Not Draining - What to Check

A dishwasher typically lasts 10 to 15 years with regular maintenance. Drainage problems are the most common cause of early failure, and most are preventable with basic, consistent upkeep and timely checks.

How long should a dishwasher last and what affects that

Most dishwashers sold in the UK are built to run somewhere between 10 and 15 years. Mid-range machines from brands like Bosch, LG, and Hotpoint will typically reach that upper end if they're looked after. Budget models from Beko or own-label brands tend to sit closer to the 10-year mark, and that's not a criticism - it reflects the components used and the build quality at that price point. What cuts that lifespan short? In most cases it comes down to three things: hard water scale buildup, a neglected filter, and drainage problems that get ignored until the pump is working too hard to cope. Worcester sits in an area where water hardness varies depending on where you are in Worcestershire. Some parts of the county have moderately hard water, which means limescale is a real factor in how quickly internal components degrade. The heating element, spray arms, and pump are the parts most affected. If you've noticed your machine isn't cleaning as well as it used to, or the cycle seems to be running longer than normal, hard water damage is often behind it. The drain pump is one of the most common components to fail prematurely, and in the vast majority of cases it's because it's been pushing water through a partially blocked filter or a kinked hose for months. The motor wears out faster than it should. Once it's gone, you're looking at a repair bill that starts to make replacement feel tempting. The good news is that most drainage failures our engineers see on callouts in Worcester are caused by blockages, not failed components. The machine isn't broken - it just needs clearing. Understanding what to check, and making those checks part of your routine, is what separates a 15-year dishwasher from a 10-year one.

The maintenance that actually makes a difference

When a homeowner calls us because their dishwasher isn't draining, the first thing our engineers check is the filter. It's the culprit in the majority of cases. The filter sits at the bottom of the dishwasher interior, usually in a cylindrical housing that twists out by hand. It catches food debris, glass fragments, and grease. If it hasn't been cleaned regularly, it becomes so blocked that water simply can't pass through to the drain pump. Most manufacturers recommend cleaning the filter once a month, but in households running the machine daily, fortnightly is more realistic. Here's how to do it properly: 1. Remove the lower basket and pull out the filter housing. 2. Separate the coarse mesh filter from the fine cylindrical one. 3. Rinse both under warm running water using a soft brush - an old toothbrush works well - to dislodge grease and debris. 4. Check the sump area underneath where the filter sits, since food collects here too. 5. Refit the filter securely before running the next cycle. The drain hose is the next thing to check when drainage is slow or incomplete. It runs from the pump at the base of the machine to either a standpipe or the trap under your kitchen sink. Kinks in this hose restrict flow and put unnecessary load on the pump. It should form a loop that rises to at least 40cm above floor level before dropping to the outlet - this prevents backflow from the sink. If the machine has been slid back into its housing and the hose has been pushed flat against the wall, that's often enough to cause a drainage fault on its own. The spray arms are often overlooked in a maintenance routine but they're directly linked to wash performance and, indirectly, to how hard the pump works. Blocked spray arm holes reduce water pressure, the machine compensates by running longer, and components wear faster. Unclip the spray arms every few months, hold them under the tap, and clear any blocked holes with a cocktail stick or thin skewer. On machines from Bosch and Samsung in particular, our engineers have found that running a hot maintenance wash at 70 degrees or higher with a dishwasher cleaner every six to eight weeks makes a significant difference to how clean the internal pipework stays. It dissolves grease deposits before they harden into blockages.

Warning signs it is reaching end of life

Drainage problems are sometimes an early warning, but they're not always a death sentence for the machine. Here's how to tell the difference between a maintenance issue and a machine that's on its way out. A machine that drains slowly or incompletely after the filter has been cleaned and the hose checked is likely showing signs of pump wear. The pump motor in most dishwashers isn't serviceable as a component - it's replaced as a whole unit. If the machine is more than 10 years old and the pump is failing, you're at the point where the repair cost needs to be weighed carefully against the age and condition of everything else. Watch for these signals: - Water left standing at the bottom of the tub after a full cycle, even after cleaning the filter thoroughly - An unusual grinding or humming noise during the drain phase - Error codes that relate to drainage - on Bosch machines this is typically E24 or E25, which we cover in the FAQ below - Visible rust around the door seal or at the base of the tub interior - The door seal leaking water onto the floor during or after a cycle Rust inside the tub is often the deciding factor. Stainless steel tubs on mid-to-upper-range machines are resistant, but plastic tubs on older budget machines can corrode. Once rust appears it tends to spread, and the machine is rarely worth repairing at that stage. If you're in Worcester and you're not certain whether what you're seeing is a maintenance issue or genuine component failure, the Voltrade GoFIX diagnostic tool can help you identify the likely fault before you book an engineer. It walks you through a series of checks and gives you a clearer picture of what you're actually dealing with.

Repair vs replace - the honest calculation

The rule our engineers use is this: if the repair costs more than half the price of a comparable new machine, think carefully before committing to it. A new mid-range dishwasher in the UK typically costs between 350 and 600 pounds. So if a repair is going to come in at 200 pounds or more, that's the threshold where replacement starts to make financial sense - especially if the machine is already eight years old or more. Common repair costs in 2026: - Filter and drain hose clear: typically 60 to 90 pounds including callout - Drain pump replacement: typically 120 to 200 pounds for parts and labour - Door seal replacement: typically 80 to 130 pounds - Control board replacement: typically 150 to 300 pounds - at this price point, replacement is often the more sensible option Labour rates for appliance repair in Worcestershire run broadly in line with the Midlands average. Expect to pay 60 to 80 pounds per hour plus VAT for a qualified engineer, with most standard repairs completed within one to two hours. One factor worth considering is energy efficiency. A dishwasher more than 10 years old is likely rated D or lower under the current UK energy labelling scale. Modern A-rated machines use considerably less water and electricity per cycle. Over a full year the saving is real, though it rarely justifies replacing a machine that's otherwise performing well - the savings won't recoup the cost of a new appliance in a reasonable timeframe. If your machine is under seven years old and the fault is drainage-related, repair almost always makes more sense. Drainage faults are typically cheaper to fix than electrical, heating element, or control board failures.

Annual service - what it should include

A proper appliance service isn't something that's widely marketed in the UK, but for households where the dishwasher runs twice daily, it's worth considering every two years or so. What a thorough service should cover: 1. Full filter and sump clean 2. Spray arm removal and descale 3. Drain hose inspection and repositioning if the routing is compromised 4. Door seal condition check and clean 5. Internal descale using a professional-grade product 6. Pump operation check - listening for signs of early bearing wear 7. Water inlet valve check for restricted flow 8. Salt and rinse aid dispenser inspection 9. Door hinges and latch check for wear 10. A test cycle to verify drain speed and overall wash performance Our engineers in Worcester regularly pick up early-stage issues during this kind of check that the homeowner hasn't spotted - a hose that's close to kinking, a door seal cracking at one corner, or a salt dispenser that's partially obstructed. Catching these early means a 15-minute fix rather than a callout for a breakdown three months later. If you have hard water in your part of Worcestershire, a service should also include checking the integrated water softener salt level and verifying that the salt dispenser cap is sealing properly. A failed cap lets salt dissolve directly into the wash water, which can corrode stainless steel components over time - the kind of damage that isn't obvious until it's already significant.

Simple habits that extend the life by years

The difference between a dishwasher that lasts 10 years and one that reaches 14 or 15 almost always comes down to how it's used day to day, not to how much it cost. Scrape plates before loading, but don't pre-rinse them. Modern machines are designed to work with some food residue present, and pre-rinsing can confuse the sensors on machines from LG and Bosch that calibrate the wash cycle based on how dirty the water gets. Large food scraps, bones, and fruit stones should be removed - but the rest can go in as it is. Use the right amount of detergent. Excess detergent leaves residue on internal components and degrades rubber seals over time. If you're using tablets, one per cycle is enough. Loose powder or gel should follow the manufacturer's dosage guide on the packet. Keep the salt and rinse aid topped up. This is particularly important in hard water areas. The integrated water softener in most machines relies on salt to regenerate. When salt runs out, limescale builds rapidly on the heating element. A scale-coated element draws more electricity and fails sooner - it's one of the most avoidable repair bills there is. Run a hot cycle regularly. Modern eco programmes run at 45 to 50 degrees, which is efficient but not always hot enough to dissolve grease properly. Once a week, run the machine on its hottest programme - typically 65 to 70 degrees - to clear grease accumulation in the pipework and pump housing. Don't overload. Overloading restricts water circulation and often means the machine needs to run a second cycle to get things properly clean. It also blocks the spray arms when items stick out at odd angles. Leave the door slightly ajar after a cycle. This lets moisture escape and prevents mould and odour building up on the door seal and inside the tub. It's a small habit that makes a noticeable difference over time. Households in Worcester that follow these basics consistently tell our engineers they see a real improvement in wash quality - and the machines we service in those homes are visibly in better condition than those that haven't had the same care.

Maintenance questions

Why is my dishwasher not draining even after I have cleaned the filter?

If the filter is clear but water is still sitting in the tub, the next things to check are the drain hose and the pump. The drain hose may be kinked, clogged with grease, or not routed correctly at the outlet. If the hose looks fine, the drain pump itself may be starting to fail - you'll often hear a humming or grinding sound during the drain phase if that's the case. A blocked check valve at the point where the hose meets the outlet can also prevent water from leaving, and this is usually a quick fix if caught early.

How often should I clean my dishwasher filter in a hard water area of Worcestershire?

In most households running the dishwasher once or twice daily, cleaning the filter every two weeks is a sensible routine. In hard water areas, limescale can partially block the fine mesh filter even when food debris isn't the main issue, so regular descaling matters as much as physical cleaning. Running a dedicated dishwasher cleaner through a 70-degree cycle once a month helps manage both scale and grease in the internal pipework, reducing the load on the filter and the pump.

Is it worth repairing a Hotpoint or Beko dishwasher that is seven years old?

In most cases, yes - provided the repair cost stays under 150 pounds. At seven years, these machines still have reasonable life left if the core components are in good shape. Drainage faults, filter blockages, and hose issues are typically low-cost repairs that are well worth doing. Where it gets more complicated is if the control board or pump motor needs replacing - at that point the repair bill can approach the cost of a new machine, and replacement becomes a more sensible option. Get a proper diagnostic before committing to any parts.

What do the E24 and E25 error codes mean on a Bosch dishwasher?

The E24 and E25 error codes on Bosch dishwashers both relate to drainage problems. E24 indicates the machine isn't draining within the expected time - in most cases clearing the filter and checking the drain hose resolves it. E25 typically points to a blocked or jammed drain pump impeller. This usually requires removing the pump cover to clear debris from around the impeller blade, which is a job a confident homeowner can tackle, though if you're not comfortable doing it an engineer can typically resolve it in under an hour.

Dean Prescott

Appliance repair specialist. Writes repair and maintenance guides for Voltrade covering washing machines, ovens, dishwashers, and more.

Reviewed by Sarah Thornton - senior technical editor at voltrade. This article is intended as general guidance and should not replace a professional on-site assessment. All Voltrade engineers are independently qualified, insured, and vetted.