Cooker Hood Not Working in Ashford - Common Faults and How Long Yours Should Last

Published October 2026 | Cooker Hood Not Working Common Faults

How Long Should a Cooker Hood Last and What Affects That

The honest answer is that lifespan varies enormously depending on how hard the hood works and how well it's looked after. A cooker hood in a busy Ashford family home, running for an hour or more every day, is going to age faster than one above a hob used twice a week. That's not a design flaw - it's just physics.

Build quality makes a real difference. A Bosch or Siemens hood with a brushless motor is simply better engineered than a no-name budget unit from a builder's merchant. You'll typically pay more upfront, but the motor, switches, and electronics will handle daily use without failing prematurely. Hotpoint and Beko sit in the middle ground - decent reliability for the price, but more likely to need a motor or PCB replacement after 8 to 10 years.

Extraction type matters too. Recirculating hoods - the ones that filter and return air rather than venting outside - work harder to keep your kitchen clear. The carbon filters get saturated faster, and when they're not changed regularly, the motor strains to pull air through clogged media. That accelerates wear considerably. Ducted hoods that vent directly outside run more efficiently, which means less motor stress and a longer service life overall.

Installation quality also plays a part. A hood mounted too low, or connected to ducting that's too long or has too many bends, will make the motor work harder than it needs to. Our engineers in Ashford see this regularly - particularly in older properties where retrofitting an extractor hood means compromising on the ideal duct run.

The Maintenance That Actually Makes a Difference

There's a lot of generic advice about cooker hood maintenance. Most of it boils down to "clean the filters" and that's true, but it's only part of the picture. Here's what actually keeps these appliances running properly.

Grease filter cleaning is the non-negotiable first step. Most hoods use aluminium mesh filters that trap grease before it reaches the motor. When these get blocked, airflow drops, the motor runs hotter, and extraction quality falls. Most cooker hood problems are identifiable early, and a blocked grease filter is almost always obvious - hold a sheet of kitchen roll near the intake. If it doesn't get pulled towards the hood, the filter needs attention.

How often you clean grease filters depends on cooking habits. For most households cooking most days, once a month is about right. If you do a lot of frying or wok cooking, fortnightly is more sensible. Most aluminium mesh filters are dishwasher safe - run them on a hot cycle and they come out good as new.

Carbon filter replacement applies only to recirculating hoods. These filters absorb odours and can't be cleaned - they have to be replaced. Typically this means changing them every three to six months. Skip this and you'll end up with a hood that moves air but doesn't remove smells, which is essentially useless. Replacement carbon filters typically cost between 10 and 25 pounds depending on the brand. Keep a spare in the cupboard.

Fan blades need attention too, though less frequently. Over time, grease finds its way past the filters and coats the blades. This builds up gradually, adding weight and throwing the fan out of balance. The result is vibration, noise, and extra strain on the motor bearings. A careful clean of the fan blades once a year - with the hood isolated from the power supply - can add years to the motor's life.

The ducting deserves a check if your hood vents outside. Duct runs accumulate grease internally over time, particularly at bends and joints. This restricts airflow and can, in some circumstances, become a fire risk. A thorough duct inspection every couple of years is sensible, particularly for larger households.

Warning Signs It Is Reaching End of Life

Cooker hoods tend to give plenty of warning before they give up entirely. Common faults include motor failure, faulty lights, switch problems, filter blockages, noisy fans, poor extraction, smells, ducting issues, and electrical faults - and most of these develop gradually rather than all at once.

Here are the warning signs worth taking seriously:

1. Reduced extraction at all speeds - if the hood is struggling to clear cooking steam even on the highest setting and the filters are clean, the motor is likely losing power. This is often a sign of worn motor bearings or degraded winding insulation.
2. Increasing noise levels - a hood that's getting louder over time, particularly with a rattling or grinding quality, suggests the fan bearings are wearing. Left alone, a bearing failure will eventually seize the motor completely.
3. Intermittent operation - if the hood cuts out randomly or only works on certain speed settings, a failing PCB or deteriorating speed switch is usually the cause. Electronics don't get better with time.
4. Persistent burning smell - not cooking smells, but a distinct electrical or burning plastic odour from the unit itself. This warrants immediate attention and the hood should be switched off until it's been inspected by an engineer.
5. Lights flickering or failing - this can be an early indicator of electrical issues within the hood, particularly if the unit is older and wiring connectors are corroding.

If your hood is showing two or more of these signs simultaneously and it's already over 10 years old, that's a strong signal that repair costs are going to start stacking up.

Repair vs Replace - The Honest Calculation

This is where our engineers try to give homeowners a realistic picture rather than just recommending the most expensive option. The general rule is this: if a repair costs more than half the price of a comparable new unit, replacement usually makes more financial sense.

A mid-range cooker hood - a decent Bosch or Hotpoint equivalent - typically costs between 150 and 350 pounds installed. A budget replacement at the lower end can be done for as little as 100 pounds for the unit itself, plus fitting labour.

On the repair side, here's what you're typically looking at:

• Motor replacement: typically between 80 and 180 pounds including parts and labour, depending on the brand and motor availability
• PCB or control board replacement: typically 60 to 150 pounds, depending on parts availability for older models
• Switch or speed control replacement: often 40 to 80 pounds
• Fan blade replacement or rebalancing: typically 50 to 100 pounds

The calculus changes with age. If the hood is 5 years old, fixing a motor makes sense - you're likely getting another 5 to 8 years of service. If it's 12 years old, the same motor repair might buy you 2 to 3 years before something else fails. In that case, a new unit is usually the wiser investment.

One thing worth knowing for Kent households: if your hood is integrated into a kitchen built with a specific chimney stack or canopy, replacement can be more involved than swapping like-for-like. Check dimensions carefully and, if you're in any doubt, get an engineer to measure up before you buy a replacement unit.

Annual Service - What It Should Include

Most people don't think about servicing a cooker hood the way they do a boiler. But for an appliance that runs most days and deals with heat, grease, and moisture, a periodic professional check makes a real difference to longevity.

A proper annual service should cover:

1. Filter inspection and cleaning - a full clean of grease filters and an assessment of whether carbon filters need replacing
2. Fan blade inspection - checking for grease build-up, physical damage, and balance
3. Motor performance check - listening for bearing noise, checking current draw at each speed setting, verifying airflow output
4. Switch and speed control testing - cycling through all settings and confirming consistent operation
5. Light checks - testing bulbs and inspecting connectors for corrosion or loose connections
6. Duct inspection - where accessible, checking the duct run for grease accumulation and verifying the external vent opens and closes correctly
7. Electrical connections - inspecting the terminal block and wiring for signs of overheating or deterioration

If you're using the Voltrade GoFIX diagnostic tool, running a hood check before booking a service call can save time by flagging which specific areas need attention. Our engineers covering the Ashford area use GoFIX data as a starting point, which often means arriving with the right parts rather than needing a second visit.

For a cooker hood in Kent, expect to pay between 50 and 90 pounds for a standalone service call. Some engineers bundle it with other appliance checks, which can bring the per-unit cost down.

Simple Habits That Extend the Life by Years

Beyond formal servicing, day-to-day habits make a significant difference to how long a cooker hood lasts.

Run the hood before you start cooking, not just when steam appears. Getting the fan up to speed before you heat the pan means it's already clearing air by the time vapour starts rising. This reduces the amount of condensation forming inside the hood and on the motor housing.

Leave it running for a few minutes after you finish cooking. The residual heat and moisture need to be cleared. Switching off the moment the pan leaves the hob means that moisture sits inside the unit and contributes to corrosion over time.

Use the right speed for the job. Running on maximum when you're just simmering something adds unnecessary hours to the motor's total running time. Use a lower speed for gentle cooking and save the higher settings for frying and roasting.

Keep the area around the intake clear. Pot lids, long utensils, or anything stored on top of the hob can disrupt airflow. The hood needs a clear path to pull air from the cooking zone effectively.

Deal with filter cleaning promptly when it's due. The temptation to put it off for another week is understandable, but a blocked filter means the motor works harder every time you cook. Cumulative wear from running through restricted filters is one of the most common reasons for early motor failure that our engineers encounter across Ashford and the wider Kent area.

Check the external vent flap seasonally. In winter, the flap can stiffen or even freeze shut, which forces the motor to push against resistance. A quick check every few months - and a little light lubrication on the flap hinge if it's stiff - keeps the system running freely.

Maintenance Questions

How often should I clean my cooker hood filters?

For most households cooking daily, aluminium grease filters need cleaning once a month. If you do a lot of frying or high-heat cooking, every two weeks is more appropriate. Carbon filters in recirculating hoods can't be cleaned and need replacing every three to six months - check your model's handbook for the specific interval, as brands like Bosch and Samsung often specify this in their maintenance schedule.

Why is my cooker hood making a loud rattling noise?

Noisy fans and poor extraction are among the most commonly reported cooker hood problems, and a rattling noise typically points to one of three things: a loose or damaged fan blade, worn motor bearings, or debris that's found its way into the fan housing. Grease-coated blades that have become unbalanced are particularly common. Don't ignore it - a rattling fan puts extra stress on the motor and bearings and will usually get worse without attention.

Is it worth repairing a cooker hood that is completely dead?

It depends on the age and the nature of the fault. A totally dead hood - no lights, no fan - usually means a blown thermal fuse, a failed PCB, or a seized motor. Thermal fuses are cheap to replace, often under 30 pounds for parts and labour. A full motor or PCB replacement on a hood that's already 10 or more years old is harder to justify. Our engineers would typically recommend getting a repair quote and comparing it to the cost of a suitable replacement before committing either way.

Can a burning smell from my cooker hood be dangerous?

A persistent burning or acrid smell from the hood itself - as opposed to cooking smells it's failed to clear - should never be ignored. It can indicate overheating components, degraded motor insulation, or failing electrical connections. Switch the hood off and get it inspected before using it again. Running a hood with an electrical burning smell is a potential fire risk, and in any Kent home where the hood sits above a gas or electric hob, that's not a risk worth taking.