There are few things more frustrating than pulling a load of laundry out of the tumble dryer only to find it's still damp — especially when the machine has been chuntering away for two hours and your electricity meter is spinning. Before you start hanging everything over the radiators or panic-shopping for a new dryer, the good news is that a tumble dryer that won't dry properly is usually fixable, and often with a check you can do yourself in under ten minutes.
I'm Alex, the local engineer for Go Assist Bournemouth, and I see this complaint more than almost any other when I'm out on jobs across Boscombe, Westbourne, Poole and Christchurch. The fault is rarely a complete breakdown — more often it's a blocked filter, a kinked vent or a tired sensor. Below are the five things I check first, in the order I'd check them in your kitchen or utility room. Work through them one at a time and you might just save yourself a callout. If you do still need help, we offer tumble dryer repairs from £69 across the BH postcodes.
Check 1: The Lint Filter and Condenser (The Number One Cause)
If I had a pound for every dryer I've fixed by simply emptying a filter, I'd have retired to Sandbanks by now. A clogged lint filter is comfortably the most common reason for poor drying performance, and it's also the easiest to put right.
Why a blocked filter stops drying
Your tumble dryer works by blowing hot air through the drum to evaporate moisture from your clothes. That air needs to flow freely. When the lint filter clogs up, airflow drops, the dryer can't shift moist air out of the drum, and your washing essentially stews in damp warmth rather than drying. The drum still spins, the heater still warms, but the cycle is fundamentally broken.
How to clean it properly
Pull the filter out — usually from the door rim or the top of the machine — and remove the visible fluff. That's the easy bit. The bit most people miss: hold the filter under a running tap and rinse the mesh through. Fabric softener residue and fine fibres build up on the mesh itself, and even a filter that looks clean can be partly blocked. Let it dry fully before refitting.
Don't forget the condenser unit
If you've got a condenser dryer (as opposed to a vented one), there's a second filter you might never have touched — the condenser heat exchanger, usually behind a flap at the bottom front of the machine. Slide it out, rinse it in the sink, and let it drip-dry. I've pulled condensers out of dryers in Pokesdown that were so caked in lint they were practically solid. Once cleaned, drying times often halve.
Check 2: Venting, Hoses and Where the Moist Air Goes
Once the air has picked up moisture from your clothes, it has to go somewhere. If it can't, the inside of your dryer turns into a sauna and nothing dries.
Vented dryers: check the hose run
If your dryer vents outside through a hose, take a proper look at that hose. Common problems I see in Bournemouth terraced houses:
- The hose is kinked behind the machine where it's been pushed back against the wall
- The external vent flap is jammed shut by paint, cobwebs or a wasp nest (yes, really — twice last summer in Southbourne)
- The hose itself is full of lint and needs disconnecting and shaking out
- The vent run is too long or has too many bends, restricting flow
Disconnect the hose at both ends, give it a shake outside, and check the outdoor grille is opening freely. If you can see daylight through the whole run, you're good.
Condenser dryers: empty the water tank
This sounds obvious but bear with me. Most condenser dryers have a sensor that pauses the cycle when the water reservoir is full. But on some older models the sensor sticks, and the dryer keeps running even though the water has nowhere to go — which means moisture from your clothes can't condense out. Empty the tank before every cycle as a habit. If you can plumb it into a drain (many models support this), do it.
Heat pump dryers: check the evaporator
Heat pump dryers have a fine mesh evaporator behind the condenser that needs occasional cleaning. The manual will tell you how — usually a soft brush and a careful hand. Skip this and drying times creep up month by month until clothes come out warm but wet. Customers in Poole and the surrounding areas often ring me about this exact issue.
Check 3: Sensors, Settings and User Error (No Judgement Here)
Before we get into proper faults, it's worth ruling out the things that look like a broken dryer but aren't. I'd rather tell you over the phone that you've selected the wrong programme than charge you for a callout to point at a dial.
Have you picked the right programme?
Modern dryers have a dozen programmes and the names aren't always intuitive. "Cupboard Dry" leaves clothes slightly cooler and drier than "Iron Dry", which is meant to leave a little moisture in. If you're using a low-temperature or delicates cycle for thick towels, they'll come out damp every time — that's the cycle doing its job, not a fault.
Have you overloaded the drum?
Rule of thumb: the drum should be half-full when the clothes are dry. If you're cramming in a king-size duvet and three bath towels, the load is too big for hot air to circulate properly and nothing in the middle will dry. Split it into two loads — annoying, but it works.
Are the moisture sensors dirty?
Auto-sensing dryers use two small metal strips inside the drum to detect when clothes are dry. Over time these get coated with fabric softener residue, which fools the sensor into thinking the load is already dry — and it ends the cycle early. Wipe them with a cotton ball dipped in white vinegar, let it dry, and try again. I've turned around "dryers that stop after 20 minutes" in five minutes flat in Christchurch with this trick.
And the basics
Are your clothes already over-wet going in? If your washing machine isn't spinning properly, the dryer has twice the work to do. Drying times go through the roof and energy bills follow. Worth running a fast spin-only cycle on the washer before transferring.
Check 4: Heat — Is the Dryer Actually Getting Hot?
If you've cleaned every filter, freed every vent and selected the right programme, and the drum is still tumbling but clothes feel cool and damp at the end of the cycle, you may have a heating fault. This is where it gets a bit more technical — and where, in most cases, you'll want a qualified engineer.
How to test the heat
Run an empty cycle on the hottest setting for ten minutes. Open the door (carefully) and feel the inside of the drum. It should be noticeably warm — not painfully hot, but clearly heated. If it's barely warmer than room temperature, the heating element or a thermostat has likely failed.
Why heaters fail
The most common heating faults I see are:
- Blown thermal fuse or thermostat — usually triggered by a previous blockage that caused the dryer to overheat. The dryer turns on, the drum spins, but no heat is produced. Replacing the fuse without fixing the underlying airflow problem just blows the new fuse.
- Failed heating element — a coil inside the heater box has broken. Common on dryers more than 6-7 years old.
- Faulty NTC sensor — the dryer thinks it's already at temperature and shuts the heater off prematurely.
Why I don't recommend DIY here
Tumble dryer heating circuits run at mains voltage and the heater box gets hot enough to burn. They're also a common cause of appliance fires when assembled incorrectly. This is the point where I'd ask you to book a Go Assist engineer rather than YouTube your way through it. Most heating faults are quick fixes for someone who does them weekly — I carry the common elements, thermostats and fuses for Hotpoint, Beko, Bosch, Indesit and Hoover dryers in the van.
Brand-specific quirks
If you've got a Hotpoint or Indesit, there was a well-publicised safety recall a few years back that some customers still haven't had completed. It's worth checking the model number against the official recall list. Have a look at our Hotpoint appliance repair page for more on that — we can confirm whether your specific model is affected.
Check 5: When It's Time to Call In a Local Engineer
If you've worked through checks 1-4 and your dryer still isn't drying, you've done more diagnostic work than 90% of customers — well done. At this stage the fault is almost certainly internal, and trying to push further on your own usually costs more in time and parts than just getting it looked at.
Signs it's a job for a professional
- Drum spins but no heat after a full cleaning service
- Burning smell, electrical smell, or scorch marks anywhere on or near the dryer
- Dryer trips the RCD on your consumer unit when it starts
- Loud thumping, scraping or screeching from the drum
- Cycle won't start, won't progress, or stops at the same point every time
- Error code displayed (note the exact code before you ring — it saves us both time)
What a Go Assist visit looks like
When you book us, I'll come out with the diagnostic kit and the most common spares already on board. The vast majority of jobs I finish in a single visit — drum belts, capacitors, thermostats, door switches, heating elements, fan motors. You'll get a fixed quote before I start any work, so no surprises. Repairs start from £69, and I cover the whole BH postcode area including Westbourne, Boscombe, central Bournemouth, Poole, Christchurch, Highcliffe and the surrounding villages.
The Premium Home Membership angle
If your dryer is one of several appliances in the house that are getting on a bit, it might be worth considering our Premium Home Membership. Members get priority booking, discounted repairs across all major appliances, and a 1-year guarantee on parts and labour for Premium Members — so if I fix your dryer today and the same fault comes back in eleven months, I'm back out at no extra charge. It's the kind of cover that pays for itself the first time something else goes wrong.
Final thought
A tumble dryer that won't dry is almost never beyond saving. Run through the five checks above in order — filter, vent, settings, heat, then call — and you'll either fix it yourself or arrive at the engineer's visit knowing exactly what to tell me. Either way, your washing gets dry and you get your weekend back. If you're stuck or just want a second opinion, give me a shout via the Go Assist Bournemouth booking page and I'll be along.