Cooker Hood Not Working Common Faults in Andover

Published September 2026 | Cooker Hood Not Working Common Faults

Why This Time of Year Matters for Appliance Repair in Andover

September marks a genuine turning point in how UK kitchens get used. The lighter meals and barbecues of summer give way to roasting trays, simmering soups, and oven bakes. Your cooker hood, which may have barely been tested for months, suddenly needs to work hard every single day.

Our engineers see a reliable rise in cooker hood callouts across Hampshire as autumn sets in. It's not random. Many hoods have been ticking along on low demand through summer, and the first sign of trouble is often masked by lighter cooking. Then a Sunday roast goes in, the oven's running at full temperature, steam and fat are rising from the hob - and a partially blocked filter or a weakening motor gets pushed beyond what it can handle.

There's also a specific seasonal factor for ducted hoods in Andover and the surrounding Hampshire area. As outdoor temperatures drop, the temperature difference between your kitchen and the outside air increases. This can cause condensation to form inside the ducting, and in a cold snap it can partially freeze, restricting airflow or causing water to drip back into the hood body. If you've got a duct that runs through an unheated loft space, this is worth knowing about before November arrives.

Getting your cooker hood properly maintained before the busy cooking season isn't overcautious - it's just sensible timing. The cost of a service visit now is considerably less than an emergency callout on Christmas Eve.

The Problems We See Most Often Right Now

Cooker hood faults are actually fairly predictable. They fall into a handful of repeating patterns, and most of them are diagnosable before you even call an engineer. Here's what our teams are dealing with most frequently in Andover kitchens this time of year.

Blocked or saturated grease filters

This is by far the most common fault we encounter, and it's almost always the first thing to check when extraction drops off. Grease filters - whether metal mesh or charcoal - gradually become clogged with cooking residue. Once they're saturated, airflow through the hood reduces dramatically. You'll notice the kitchen filling with steam or cooking smells even when the hood is running at full speed, which is a classic sign that air simply isn't moving through properly.

Metal mesh filters on brands like Bosch and Hotpoint are typically washable and should be cleaned every four to six weeks under regular use. Charcoal filters on recirculating hoods - common in many Andover properties where external ducting isn't possible - need replacing entirely, usually every three to six months. Replacement charcoal filters for most brands cost between 15 and 40 pounds per filter, and fitting them takes a couple of minutes.

Motor faults and unusual sounds

If your cooker hood produces a humming sound when switched on but the fan isn't moving, or extraction seems very weak even on the highest setting, the motor is most likely the problem. A humming motor with little or no air movement typically points to a seized bearing or a short in the motor windings. This fault pattern is especially common in older units that have been running continuously at high speed against a restricted airway - the motor strains and wears out faster than it should.

Our engineers see this regularly on older Beko and LG models where filter maintenance has been neglected. The motor has been fighting a blocked airway for months, and eventually it gives up. Motor replacement in most hood models typically costs between 80 and 200 pounds including parts and labour, depending on the brand and how accessible the motor is to remove and refit.

Complete electrical failure - nothing works at all

If the cooker hood isn't responding to any controls - no lights, no fan, no display - the starting point is always the power supply. Many hoods are hardwired, but some are connected via a plug and socket above the wall cabinet. Check that the circuit breaker hasn't tripped. If power is confirmed and there's still nothing happening, the control board or main wiring harness may have failed.

Control board faults are more common on touch-control hoods from brands like Samsung and Bosch. These boards can fail due to grease contamination reaching internal components over time, or from a power surge. A replacement control board typically costs between 60 and 150 pounds for the part, with labour on top. Using Voltrade's GoFIX diagnostic tool can help identify whether the fault is genuinely the board or something further upstream before you commit to the cost of parts.

Fan running but extraction still poor

If you can hear the fan running but your kitchen still fills with steam, the problem may not be the hood at all. Ducted hoods rely on a clear, sealed pathway to the exterior. In many Andover homes, particularly older properties, we find that duct connections have come loose over time, or the external wall vent flap has seized in either the open or closed position. A stuck-open flap lets cold air pour back in; a stuck-closed one blocks extraction entirely. These flaps cost between 10 and 25 pounds to replace and are a quick fix when identified.

Lights failed on the hood

It sounds minor, but working lights make a genuine difference when you're cooking. Most modern hoods use LED strips rather than individual bulbs, and when these fail they often need replacing as a complete unit. Make sure any replacement matches the voltage and fitting type of the original - fitting the wrong LED strip can cause flickering or early failure. Your specific model number, usually on a label inside the filter compartment, will get you to the correct part.

Preventive Steps You Can Take This Week

Most of what keeps a cooker hood running well doesn't require an engineer. These are practical steps any homeowner can do now, before the busy months hit properly.

1. Remove and clean your metal grease filters. Most slide or clip out without tools. Soak them in hot water with washing-up liquid for 20 to 30 minutes, then scrub gently with a soft brush. Let them dry completely before refitting - a wet filter can cause moisture problems in the motor housing.
2. If your hood is a recirculating type with no external duct, check when you last replaced the charcoal filter. If you're not sure, replace it. They're available from most appliance parts suppliers for 15 to 35 pounds and fitting takes under five minutes in most models.
3. Go outside and check the external vent flap on ducted hoods. It should open freely when you push it and spring closed when released. Clear any debris, spiders' webs, or accumulated leaves from the grille - these build up over summer and can significantly restrict flow.
4. Run the hood through each fan speed and listen carefully. It should step up smoothly without rattling, grinding, or the kind of laboured hum that suggests the motor is working against resistance. Note any change from how it sounded last time you paid attention.
5. Clean the hood casing and the area around the fan intake with a kitchen degreaser. Grease that accumulates on the casing and drips down towards the hob is a fire risk that's easily avoided.
6. Check every light is working. If you have LED strips and a section is out, identify the correct replacement now rather than hunting for parts when the dark evenings are already here.

For Andover homes with hoods that are ten or more years old, it's worth having an engineer carry out a condition check even if everything appears to be working. A preventive service visit typically costs between 50 and 80 pounds and can catch motor wear, wiring issues, or duct problems before they turn into a complete failure mid-winter.

Emergency Signs - Do Not Wait on These

Some cooker hood problems are inconvenient. Others are safety issues that need immediate action. These are the warning signs that mean you should stop using the hood and get it looked at without delay.

A burning electrical smell coming from the hood - distinct from ordinary cooking smells - means something is overheating. Switch the hood off at the fuse box and don't use it again until it's been inspected. This applies to all brands, including Hotpoint and Bosch models that are generally reliable.

Visible sparking near the control panel or from inside the hood casing is an immediate switch-off situation. Don't try to investigate it yourself - cut the power and call for an engineer.

Grease dripping from the hood casing is a fire hazard, particularly above a gas hob. It means the filter system is completely overwhelmed and liquid grease has accumulated in the body of the hood. Clean the filters immediately and have the internal casing inspected and cleared before further use.

If the hood's casing gets uncomfortably hot during normal operation, airflow is likely being severely restricted or the motor is developing a serious fault. Either way, continued use risks damage to the unit and potentially to the surrounding cabinetry.

A circuit breaker that trips every time you switch the hood on points to a wiring fault, a motor short circuit, or a damaged control board. Don't keep resetting the breaker and hoping - that approach can cause further damage and is a potential fire risk.

In Hampshire generally, our engineers find that cooker hood maintenance is one of the most underestimated fire prevention tasks in a kitchen. If your hood has been neglected and you're moving into a period of heavy cooking, treat it as a priority, not an afterthought.

Preparing for the Next Season

It's worth thinking past autumn now. November through January is typically the most intensive cooking period in UK households - Christmas preparation, more baking, long slow-cook dishes. Andover is no exception, and hoods that are already struggling in September will almost certainly fail under the additional load.

If your cooker hood is more than eight to ten years old, factor in whether repair or replacement is the better financial decision. A motor replacement on an older unit might cost 150 to 200 pounds all in. A decent replacement recirculating hood from Bosch or Beko can be bought for 150 to 350 pounds and fitted by an engineer for an additional 80 to 120 pounds. The new unit will typically be quieter, more energy-efficient, and come with a warranty. Our engineers can give you an honest cost comparison before you commit either way.

If you're planning kitchen changes over winter - a new hob, updated cabinetry - that's also the right moment to assess whether your current hood's extraction capacity is matched to the cooking surface below it. A 60cm hood over a 70cm range, or a low-powered recirculating model above a powerful induction hob, will never perform well regardless of maintenance. Matching extraction capacity to the hob is something worth getting right once rather than working around indefinitely.

Sort any known faults and complete your maintenance checks before December. It's a much calmer experience to deal with it now than to be chasing an engineer in the run-up to Christmas.

Seasonal Questions About Cooker Hood Faults in Andover

Why has my cooker hood suddenly stopped extracting properly now that I'm cooking more?

The most likely cause is a grease filter that's become saturated. Filters that were just about coping through lighter summer cooking can't handle the increased load of autumn roasting and frying. Remove the filters, clean the mesh ones thoroughly or replace the charcoal ones, and test extraction again. If the problem continues after that, the motor or external ducting may need attention from an engineer.

How much does cooker hood repair cost in Andover?

It depends on the fault. A service and filter clean typically costs between 50 and 80 pounds. Motor replacement usually comes to between 100 and 200 pounds including parts and labour. Control board faults typically run from 120 to 250 pounds depending on the brand and part availability. Minor electrical faults and wiring repairs are often at the lower end, around 60 to 100 pounds. Getting a proper diagnosis first means you know exactly what you're agreeing to before any work starts.

Can I replace my cooker hood filter myself?

Yes, in most cases it's a job any homeowner can do. Metal mesh grease filters on brands like Hotpoint, Beko, and LG typically clip or slide out without any tools. Charcoal filters on recirculating models are similarly accessible. The key is buying the correct replacement for your specific model - the model number is usually on a label inside the filter compartment or on the back of the unit. Voltrade's GoFIX tool can help match your model to the right filter if you're not certain.

How do I know whether to repair or replace my cooker hood?

A useful guide is to compare the repair cost against around half the price of a comparable new hood. If you're looking at a repair bill that approaches or exceeds that figure, and the hood is already eight or more years old, replacement is often the better investment. Newer models are typically quieter and more efficient, and they come with a manufacturer warranty. Our engineers in Andover can give you a clear repair estimate upfront so you're making that decision with accurate numbers rather than guessing.