Cooker Hood Not Working Common Faults Debunked for Paddock Wood Homeowners

Published August 2026 | Cooker Hood Not Working Common Faults

Most people assume a cooker hood that's packed up just needs a new bulb or a quick wipe down. The truth is far more specific - and in most cases, far cheaper to fix than you'd expect. Getting to the actual fault is the first step, and most homeowners are working from the wrong assumptions before they even pick up the phone.

Cooker hoods are used every single day and barely get a second thought - until they stop working. Our engineers see a steady stream of cooker hood callouts across Paddock Wood and the wider area, and the same faults come up again and again. More importantly, so do the same misconceptions about what's causing them. Let's cut through the myths and get to what's actually going on.

Myth: If the Light Still Works, the Motor Must Be Fine

The reality

This is probably the most common assumption our engineers encounter. The logic seems sound - the appliance has power, the light proves it, so the motor should work too. In practice, cooker hood lights and extraction motors run on completely separate circuits within the unit. A Bosch or Hotpoint hood can have a perfectly functioning LED panel while the motor capacitor is completely blown. The two components don't share a fuse or a control board in most models.

What typically happens is the motor capacitor - a small component that gives the motor the initial electrical kick it needs to start spinning - fails after several years of use. Without it, the motor hums or does nothing at all, while the light carries on regardless. Our engineers have also seen Beko and Hotpoint models where the motor windings develop a fault but the lighting circuit remains completely unaffected. If your hood is extracting nothing but the light is on, get the motor and capacitor checked before assuming the whole unit needs replacing.

Myth: A Noisy Cooker Hood Just Needs a Good Clean

The reality

Grease build-up on the filters is a real problem and can restrict airflow enough to make the motor work harder and run louder. Cleaning your filters - whether they're metal mesh or carbon - is always a sensible first step. But noise doesn't automatically mean dirty filters. In most cases of new or worsening noise, something more specific is going on.

The most common causes of a noisy cooker hood our engineers see in Paddock Wood properties include:

1. A worn or failing motor bearing - this produces a grinding or rattling sound that gets worse over time and won't be fixed by cleaning anything.
2. A loose fan blade - often caused by grease accumulation that unbalances the blade, which then vibrates against the housing.
3. A misaligned or damaged impeller - common in cheaper models after a few years of heavy use.
4. Ducting vibration - if your hood is externally ducted, a loose duct joint or an undersized duct can create a low rumble at higher fan speeds.

The distinction matters because a motor bearing fault will only get worse and can eventually cause the motor to seize. A Siemens or AEG hood with a worn bearing that gets ignored typically ends up needing a full motor replacement that would have cost considerably less if caught earlier. If the noise started suddenly or has progressively worsened over weeks, this is not a cleaning job.

Myth: Carbon Filters Are Just as Effective as Ducted Extraction

The reality

Recirculating hoods with carbon filters are useful in flats or kitchens where external ducting isn't possible - but they work in a fundamentally different way from ducted extraction, and the performance gap is significant. A ducted hood removes cooking odours, steam, and airborne grease particles from the room entirely. A recirculating hood passes air through a carbon filter that traps odours and returns the filtered air back into the kitchen. The moisture and heat stay in the room.

For Kent homeowners doing any serious cooking - roasting, frying, anything with strong odours - a recirculating system can struggle to keep pace. Carbon filters also have a finite lifespan. Most manufacturers recommend replacing them every three to six months, depending on cooking frequency. Our engineers regularly find recirculating hoods in Paddock Wood homes where the carbon filters haven't been changed in years. At that point the hood is doing almost nothing useful - it's still moving air, but the filtration is exhausted.

If your recirculating hood seems to have stopped working or is performing poorly, carbon filter replacement is the first thing to check. Replacement filters for common brands like Beko, Samsung, and LG typically cost between 15 and 40 pounds depending on the model. That's not a repair job - it's basic maintenance.

Myth: Cooker Hood Faults Are Always Expensive to Fix

The reality

This myth puts people off calling an engineer and often leads to unnecessary appliance replacements. In reality, the majority of cooker hood faults our team diagnoses fall into a handful of fixable, reasonably priced categories. The Voltrade GoFIX diagnostic tool helps our engineers pinpoint the fault quickly, which keeps labour time down and avoids costly guesswork.

Here's a realistic breakdown of what common repairs typically cost:

• Motor capacitor replacement - typically 60 to 120 pounds including parts and labour
• Fan blade replacement or rebalancing - typically 50 to 100 pounds
• Switch or control board replacement - typically 80 to 160 pounds depending on the model
• Full motor replacement - typically 120 to 250 pounds, depending on parts availability for the specific brand
• Metal mesh grease filter replacement - typically 20 to 60 pounds for the part alone

Compare that to a new mid-range cooker hood, which runs from around 150 to 400 pounds plus installation. For a hood that's only a few years old, repair almost always makes more sense financially. The exception is when the control electronics on older models develop faults and parts are no longer available - at that point replacement becomes the only realistic option.

Myth: You Can Diagnose a Cooker Hood Fault Just by Watching It

The reality

A hood that won't start, a hood that starts but doesn't extract, and a hood that trips your circuit breaker all look similar from a distance - nothing works - but they point to completely different faults. Visual diagnosis of cooker hood problems is quite limited because most of the working components are tucked away inside the housing where you can't see them without dismantling the unit.

Our engineers use a systematic approach when attending a callout in Paddock Wood or elsewhere in Kent:

1. Check the mains supply and any inline fuses first - a surprising number of callouts turn out to be a blown fuse in the connection housing.
2. Test the control switches independently to rule out a switch fault before opening the unit.
3. Inspect the motor capacitor with a capacitor tester - not just visually, because a capacitor can look perfectly normal but test completely dead.
4. Run the motor through its speed settings while listening and measuring current draw to identify bearing wear or winding faults.
5. Check ductwork for blockages if the motor runs but extraction is poor.

Skipping steps or guessing leads to buying parts you don't need. We've had homeowners come to us after replacing filters and cleaning everything in sight, when the actual fault was a failed capacitor that costs a few pounds and takes twenty minutes to swap.

Myth: Any Cooker Hood Problem Is a Job for a General Handyman

The reality

Some cooker hood maintenance is DIY territory - cleaning metal grease filters, replacing carbon filters, changing bulbs where the housing is accessible. Those tasks don't require specialist knowledge. But anything involving the motor, the control board, or the internal wiring is a different matter entirely. Cooker hoods sit above a heat source and are exposed to grease-laden air continuously. An incorrectly repaired hood that develops an electrical fault in that environment creates a real fire risk.

The control electronics in modern hoods - particularly touch-control models from brands like Bosch and Samsung - are also considerably more complex than the mechanical switches on older units. Diagnosing and replacing a control board on a touch-control hood requires proper testing equipment and familiarity with how that specific model is wired. A general handyman without appliance repair experience is likely to either misdiagnose the fault or create new problems in the process.

This is especially relevant in older Kent properties, where kitchens often have non-standard configurations and hoods that have been in place for a long time. Getting the repair right first time matters more than saving a few pounds on the callout charge.

What Actually Matters - Expert Advice on Cooker Hood Faults

After years of attending cooker hood callouts across Paddock Wood and beyond, here's what our engineers consistently find makes the difference between a quick repair and an unnecessary replacement.

Don't ignore early warning signs. A hood that's getting louder, slower, or intermittent is telling you something is wearing out. Catching it early - when the bearing is worn but the motor still runs, or when the capacitor is weakening but hasn't fully failed - typically means a cheaper repair. Waiting until the hood is completely dead often means more components have been stressed in the process.

Keep up with filter maintenance. This sounds basic but it has a direct impact on motor longevity. A blocked grease filter forces the motor to work harder against increased resistance, accelerating wear on the motor and bearings over time. Metal mesh filters should be cleaned roughly once a month in a busy kitchen - most are dishwasher safe. Carbon filters in recirculating models need replacing on schedule, not when you remember.

When your hood does develop a fault, get a proper diagnosis before buying any parts. The Voltrade GoFIX diagnostic tool our engineers carry narrows down the fault to the specific component, so you're not guessing and not paying for parts you don't need. Finally, weigh up the age and value of the appliance when deciding whether to repair. A five-year-old mid-range Hotpoint hood with a failed motor capacitor is almost certainly worth fixing. A fifteen-year-old budget hood with a failed control board and worn bearings may not be, particularly if replacement parts are no longer stocked.

Myth-Busting Questions About Cooker Hoods

Why does my cooker hood motor hum but not spin?

A motor that hums but doesn't turn is almost always a failed capacitor. The capacitor provides the initial electrical impulse that gets the motor spinning - without it, the motor receives power and tries to start (hence the hum) but can't overcome inertia. This is a common fault in hoods over five years old. A capacitor replacement is typically one of the cheaper cooker hood repairs, and the component itself costs very little. Don't run the motor in this state for long - doing so can burn out the windings and turn a cheap fix into a much more expensive one.

Can I use my cooker hood while I wait for a repair?

It depends on the fault. If the hood is tripping your circuit breaker, switch it off and don't use it until an engineer has checked it - there's likely an electrical fault creating a short circuit somewhere. If the hood runs but is making unusual noises, you can use it briefly but avoid extended sessions, as you risk turning a bearing fault into a complete motor failure. If the hood isn't extracting properly but otherwise runs normally, using it is safe but pointless. When in doubt, leave it switched off.

How long should a cooker hood last before needing repairs?

A well-maintained cooker hood from a reputable brand - Bosch, Hotpoint, AEG - should run reliably for ten to fifteen years before major components show significant wear. Budget models may develop faults sooner, particularly at the motor and control board. The biggest factor, in our experience, is filter maintenance. Hoods in Paddock Wood kitchens where filters are regularly cleaned consistently outlast those where maintenance is neglected, sometimes by several years. Annual servicing also helps catch developing faults before they become complete failures.

Frequently Asked Questions About Cooker Hood Faults

What is the most common reason a cooker hood stops working completely?

In most cases, a cooker hood that stops working entirely has either blown a fuse in the connection housing, developed a failed motor capacitor, or has a fault on the main control board. A failed capacitor is particularly common in hoods that are more than five or six years old. Before assuming the worst, check any accessible inline fuses first. If the fuse is intact, the fault is almost certainly internal and needs a proper diagnostic inspection rather than guesswork.

How much does it typically cost to repair a cooker hood in the Paddock Wood area?

Most cooker hood repairs in the Paddock Wood and Kent area fall between 60 and 250 pounds depending on the fault and the parts required. Simple fixes like capacitor replacement or switch faults sit at the lower end. Full motor replacements on premium brands sit at the higher end, particularly if parts need to be sourced to order. A Voltrade diagnostic callout will confirm exactly what the fault is and what the repair will cost before any work is carried out.

Is it worth repairing a cooker hood or should I just replace it?

The general rule our engineers follow is this: if the repair costs less than half the price of a comparable replacement and the hood is less than ten years old, repair is usually the better choice. A new mid-range cooker hood costs between 150 and 400 pounds plus installation, so most repairs compare favourably on price. The exception is when control electronics fail on older models and genuine replacement parts are no longer available from the manufacturer - at that point, replacement makes more sense.