Exhaust Fan Repair Dubai | Installation, Bathroom, Kitchen

Overview

One Click Dubai repairs, replaces and installs exhaust fans across Dubai, with a technician sent the same day. We work on bathroom and toilet extractor fans, kitchen wall and window fans, ceiling and inline duct fans, villa roof fans and commercial and industrial exhaust fans, including the wiring and ducting.

An exhaust fan is a simple machine, and it fails in simple ways: the motor wears out, dust and grease clog it, the duct behind it is blocked or was never connected, or the switch that feeds it has failed. This page helps you tell which, explains when a fan is worth repairing and when a new one is the better buy, and sets out what a proper installation involves.

Exhaust fan repair in Dubai: the short answers

Exhaust fan repair in Dubai from One Click Dubai starts with a AED 100 diagnostic visit, plus VAT. The technician tests the supply, the switch, the motor and capacitor, checks the duct and the outside grille, and gives a fixed price to repair or replace before any work.

QuestionAnswer

How soon can you come?The same day, at any hour

Which fans?Bathroom, toilet, kitchen, ceiling, wall, window, inline duct, roof and attic fans, and commercial and industrial exhaust fans

What do you do?Motor and capacitor repairs, bearing and blade work, switch and wiring faults, cleaning, like-for-like replacement and new installations with ducting

Do you do the wiring?Yes, including new switch feeds, timers and humidity controls

Do you cut new openings?Yes, in ceilings, walls and windows, with the duct run to outside

What does the visit cost?AED 100 plus VAT, with no night or weekend surcharge

Is the work covered?Yes. One month on parts and labour

Types of exhaust fan and where each is used

An exhaust fan is chosen by where it sits and how far it has to push the air. The type decides what can go wrong and how it is repaired.

TypeWhere it is usedHow it worksTypical faults

Ceiling-mounted bathroom fanBathrooms and toilets with a false ceilingA small fan in a housing above the ceiling, ducted to a shaft or outsideWorn motor, noisy bearings, disconnected or crushed duct, stuck backdraft flap

Wall or window axial fanKitchens, bathrooms, stores with an outside wall or windowA propeller fan blowing straight out through the wall or glassSeized motor, grease-bound blades, stuck shutters, pull-cord switch

Inline duct fanBathrooms and utility rooms far from an outside wallA fan fitted in the duct run, out of sightMotor failure, loose duct clamps, vibration noise

Centrifugal (box) fanLong duct runs, internal rooms, commercial useA drum impeller that develops more pressure than an axial fanBearings, capacitor, dust-loaded impeller

Fan with light, or fan-heater-light unitBathroomsCombined ceiling unitLamp or LED driver, separate switching faults

Roof or attic fanVillas, warehouses, roof voidsA weatherproof fan on the roof, sometimes belt-driven or thermostat controlledBelt, bearings, thermostat, weather damage

Commercial and industrial exhaust fanKitchens, workshops, car parks, plant roomsLarger axial or centrifugal fans, often three-phaseBelts, bearings, motors, starters

Most Dubai apartments have small ceiling fans in each bathroom ducted to a common building shaft. Villas more often have wall or window fans and a fan in the kitchen wall.

Exhaust fan not working: troubleshooting

An exhaust fan not working is either getting no power or has a failed motor. A fan that stopped working suddenly points to the supply or the capacitor. One that grew slow and noisy first has a worn motor.

SymptomLikely causeRepair

Dead, no soundSwitch failed, breaker tripped, loose connection, fused spur blown, or motor winding openTest the supply at the fan. Replace the switch or the motor

Hums, blades do not turnCapacitor failed, or the bearings have seized with dust or greaseNew capacitor. Free and lubricate, or replace the motor

Starts only when pushedCapacitor weakNew capacitor

Runs slowlyStiff bearings, weak capacitor, low voltage or caked bladesClean. Capacitor or motor

Runs for a while, then stopsThermal cut-out operating on an overheating motorClean. Usually a new motor

Works with the light on only, or will not turn offWired to the light switch, or a run-on timer doing its jobCheck the timer setting. Rewire if you want separate control

Stopped after water got inMoisture in the motor or the connectionsDry out, test insulation, replace if damaged

Fan with humidity sensor never starts, or never stopsSensor set wrongly or failedAdjust or replace

Pull-cord fan will not switchCord switch wornNew switch or fan

Checks you can make

See whether other things on the same switch or circuit work.

Look for a separate fan isolator, often a small switch above the bathroom door or a fused spur.

With the power off, spin the blades with a pencil. They should turn freely and coast. Stiff or gritty means bearings.

Listen. a hum means power is arriving and the motor cannot start.

Do not open a fan's wiring with the circuit live, and do not work on a bathroom fan from a wet floor. Our guide to a kitchen hood or extractor fan not working covers the kitchen case.

Noisy exhaust fan

An exhaust fan making noise has worn bearings, something touching the blades, a loose mounting or a duct fault. A fan gets louder for a reason, and that reason nearly always ends in a stopped fan.

NoiseLikely causeFix

RattleLoose cover, loose mounting screws, or a duct or flap tappingTighten and secure

Grinding or rumblingBearings worn or dryNew motor or fan. Oil gives a short reprieve on sleeve bearings

Squeal on start-upDry bearing, or a belt on a larger fanLubricate or replace. Re-tension the belt

Scraping or tickingBlade touching the housing, a cable or debris. Bent bladeClear, re-centre or replace the blade

Loud humMotor stalled or struggling, or the fan body resonating on the ceilingCapacitor or motor. Add isolating mounts

Roar of airFan too powerful for a small or kinked ductImprove the duct, or fit a suitable fan

Clattering in windBackdraft shutters or the outside cowlFit a sprung flap or a better cowl

Vibration through the ceilingFan fixed hard to a thin ceiling panel, or blades out of balance from dirtClean. Re-mount on a frame

Cleaning cures more noisy fans than any part does. A layer of dust on the blades puts them out of balance, and the vibration then wears the bearings.

Fan runs but does not extract

An exhaust fan that runs and moves no air has a problem behind it. The fan is rarely at fault. The duct is blocked, disconnected or too long, a flap is stuck, or no air can get into the room to replace what the fan removes.

CheckWhat you may findFix

Tissue testHold a single sheet of tissue to the grille. It should be drawn on firmly and heldIf it drops, continue down the list

Grille and bladesMatted with dustClean

Backdraft flap (flapper)Stuck shut with dust or paint, or fitted upside downFree or refit

Duct above the ceilingFallen off the fan spigot, crushed, sagging full of condensation, or never connected at allReconnect, support and re-run

Outside grille or cowlBlocked by a bird's nest, mesh clogged with fluff, or painted overClear

Duct lengthA small axial fan pushing through many metres of flexible ductShorter, smoother duct, or a centrifugal or inline fan

Air into the roomA tightly sealed door with no gap beneath itLeave a gap of about 10 mm under the door, or fit a door grille

Fan directionBlade fitted backwards after cleaning, or a three-phase fan running in reverseRefit. Correct the phase rotation

Shared shaftAir from the building riser pushing backBackdraft flap. Raise with the building management if the riser fan is off

In apartment bathrooms the commonest finding is a fan whose flexible duct has come off above the false ceiling, so that it blows damp air into the ceiling void. The room never clears, and mould grows above the tiles.

Exhaust fan motor repair and replacement

Exhaust fan motor repair is worthwhile on larger fans and seldom on small ones. A small bathroom fan is built as a unit, and a complete new fan often costs less than a motor fitted to an old housing. On wall, roof and commercial fans, the motor, capacitor and bearings are all serviceable parts.

FanCapacitorBearingsMotorUsual decision

Small bathroom or toilet fanRarely separateNot serviceablePart of the fanReplace the fan

Ceiling fan with replaceable motor moduleSometimesNot serviceableMotor and blower module can be swapped on some makesNew module where available

Wall or window fan, 20 to 40 cmReplaceableSometimesReplaceable on better makesRepair or replace by condition

Inline duct fanReplaceableSometimesReplaceableRepair if good quality

Roof, attic and box fansReplaceableReplaceableReplaceable or rewindableRepair

Commercial and industrial fansReplaceableReplaceableReplaceable or rewindableRepair

What a motor replacement involves

Isolate and confirm dead

At the breaker, and tested at the fan.

Match the motor

Voltage, power, speed, shaft size, rotation and mounting.

Transfer or replace the blade or impeller

Cleaned and checked for cracks.

Fit a new capacitor

With the motor, not the old one.

Check the running current

Against the motor's rated figure.

Check airflow at the grille

A new motor on a blocked duct will overheat like the last one.

On belt-driven roof and attic fans, the belt is replaced and the pulleys aligned at the same time.

Bathroom exhaust fans: damp, mould and smells

A bathroom exhaust fan exists to remove moisture before it condenses. In an air-conditioned Dubai home, a bathroom that stays damp grows mould on the ceiling, the grout and inside the false ceiling within weeks.

ProblemCauseFix

Mirror stays fogged, ceiling wetFan too small, duct disconnected, or the fan not run long enoughCheck the duct. Fit a larger fan or a run-on timer

Black mould on the ceilingLong-term poor extractionRestore extraction first, then treat the mould

Smells from other flatsNo backdraft flap, or the flap stuck open, on a shared shaftFit or free the flap

Fan drips waterCondensation running back down a cold or sagging ductRe-run the duct with a fall away from the fan, and insulate it

Fan too loud to useCheap axial fan, or hard mountingA quieter fan, isolated from the ceiling

Fan comes on with the light and goes off too soonNo run-onTimer fan or separate switch

Run-on timers and humidity fans

A run-on timer keeps the fan going for a set time after the light is switched off, which is when most of the moisture is still in the air. A humidity-sensing fan starts and stops by itself. Either is a better answer to a damp bathroom than a bigger fan on the same switch.

Safety in bathrooms

Fans fitted within reach of a shower or bath must be rated for that position, with the right protection against water, and the circuit should be protected by a residual current device. We fit fans to suit the location.

Kitchen exhaust fans

A kitchen wall or window exhaust fan handles grease as well as steam, and grease is what stops it. The blades and motor become coated, the shutters stick, and the fan slows until the motor overheats.

Wash the grille and blades every one to two months where there is daily frying.

Shutters that no longer open fully cut the airflow by half. Clean the hinges.

A fan that hums and will not start after years in a kitchen usually has grease in the bearings.

A wall fan alone does not capture smoke at the hob. A hood over the hob does that, and the two can work together.

Metal-bladed fans suit kitchens better than plastic ones, which warp with heat.

For chimney hoods and built-in extractors, see kitchen hood repair, and for weak extraction over the hob see our guide to a range hood not extracting. For restaurant systems, see commercial kitchen exhaust hood repair.

Fans with lights and heaters

A bathroom fan and light combo, or a combined fan, heater and light unit, has separate circuits for each function inside one housing. One can fail while the others work.

SymptomCauseRepair

Fan works, light does notBulb, LED module or driverReplace the bulb or module

Light works, fan does notFan motor or its switch feedMotor module or switch

Both deadSupply, switch or connectionTrace the supply

Light flickersLED driver failing, or a loose connectionDriver. Remake the connection

Heater does not warmElement or its switchReplace

Wrong function comes on with each switchSwitch wires crossed at installationRewire correctly

Use lamps of the type and wattage marked inside the unit. Replacing the light in a sealed LED fan usually means replacing the LED module, which is ordered by the fan's model number.

Installing a new exhaust fan

Exhaust fan installation is four jobs: choosing a fan of the right capacity, making the opening, running a duct to outside air, and wiring it safely. We do all four, including cutting ceilings, walls and glass panels where needed.

Sizing

Fan capacity is the volume of air moved per hour. Multiply the room's volume in cubic metres by the number of air changes wanted per hour. Commonly used figures are about 8 to 10 changes an hour for a bathroom and 15 or more for a kitchen.

RoomExample sizeVolumeAir changesFan capacity needed

Small toilet1.2 x 1.5 x 2.6 mAbout 4.7 m310About 50 m3 per hour

Bathroom2 x 2.5 x 2.6 m13 m310About 130 m3 per hour

Kitchen3 x 4 x 2.8 mAbout 34 m315About 500 m3 per hour

Fans sold with a rating in CFM use cubic feet per minute: 1 CFM is about 1.7 cubic metres per hour, so a 50 CFM fan moves about 85. Those are free-air figures. Every metre of duct and every bend reduces what the fan delivers, so a fan on a long duct needs a margin, or a centrifugal or inline type that holds its airflow against resistance.

The opening and the duct

Ceiling fans need a duct to a shaft or an outside wall. Discharging into the ceiling void is not ventilation.

Keep the duct short, with gentle bends, pulled taut and supported so it cannot sag.

Match the duct to the fan's outlet size, commonly 100, 125 or 150 mm.

Fit a backdraft flap and an outside grille or cowl that keeps out rain and birds.

Wall fans need a sleeve through the wall, sealed on both faces.

Window fans need a round hole cut in the glass, which is done on single glazing by a glass cutter. Sealed double-glazed and toughened panels cannot be cut and need a replacement panel made with the hole.

Wiring

A feed from the lighting circuit or a dedicated supply, through a local isolator.

A switched live and a permanent live for timer fans.

Cable, connections and fan rated for the room and the position.

Controls to suit. separate switch, light-linked, timer, humidity or a speed controller.

Adding a fan to a bathroom or kitchen that has never had one usually means approval from the building management in an apartment, because the duct joins a shared shaft or passes through an outside wall. We survey first and tell you what is possible.

Replacing an old exhaust fan

Exhaust fan replacement is quick when the new fan matches the old one's opening, duct size and wiring. It takes longer when the opening has to be enlarged or the duct or cable renewed, and an old installation often needs both.

Check before buyingWhy

Opening size or hole diameterA new fan that fits the existing hole avoids cutting and making good

Duct diameterReducing the duct to fit a smaller spigot throttles the fan

Ceiling depthThe housing has to fit in the void above

WiringTwo wires for a simple fan, three for a timer fan

Noise ratingQuoted in decibels. A few decibels less is clearly quieter

AirflowAt least that of the fan it replaces, unless the old one was oversized

We remove the old fan, check and reconnect the duct, fit and wire the new one, seal around it and test the airflow. We fit and repair the common makes, including Broan, NuTone, Panasonic, KDK, Manrose, Vent-Axia and Xpelair. If you have already bought a fan, tell us the model and the size of the existing opening when you book.

Cleaning an exhaust fan

Exhaust fan cleaning restores airflow, quietens the fan and extends the motor's life. Bathroom fans collect dust and fluff. Kitchen fans collect grease. Both should be cleaned at least twice a year.

Switch off at the isolator or breaker

Not just at the wall switch.

Remove the grille or cover

Wash it in warm soapy water.

Clean the blades or impeller

Vacuum dust with a brush. For grease, wipe with a cloth and degreaser. Do not bend the blades.

Clean the housing and the backdraft flap

And check the flap swings freely.

Keep water away from the motor and connections

Wipe, do not spray.

Dry, refit and test

With the tissue test at the grille.

Roof, attic and commercial fans are cleaned with the supply locked off, and their belts, bearings and mounts are checked at the same visit.

Roof, attic and villa fans

Roof and attic fans remove heat from roof voids, stairwells, garages and stores in villas and low buildings. They sit in full sun and weather, and that is what wears them.

SymptomCauseRepair

Fan does not start in the heatThermostat failed or set too highAdjust or replace

Squeal or flappingBelt worn or loose on a belt-driven fanNew belt, aligned and tensioned

RumbleBearingsNew bearings or motor

Rain enteringCowl, flashing or shutters damagedRepair and reseal

Shutters stuckCorrosion or sandFree or replace

Fan runs, void stays hotNo inlet vents for replacement airAdd or clear inlet vents

Sand and dust load the blades of any outdoor fan in Dubai. A wash and a bearing check before summer avoids most mid-season failures.

Commercial and industrial exhaust fans

We repair commercial and industrial exhaust fans in restaurants, workshops, warehouses, laundries, car parks and plant rooms: wall and roof axial fans, centrifugal and inline fans, single and three-phase.

FaultUsual causeRepair

Overload tripsSeized bearings, dirty impeller, wrong belt tension, motor faultFind and correct. Measure the current

Fan runs backwardsPhase rotation changed after electrical workSwap two phases

Belt squeal or belt dustWorn or misaligned driveNew belts and alignment

VibrationDirt on the impeller, worn mounts, loose fixingsClean, balance, renew mounts

Low airflowBlocked inlet screens or filters, closed dampers, dirty impellerClean and open

Starter or speed controller faultContactor, overload relay or drive failureRepair or replace

Motors on larger fans are replaced like for like or rewound, and bearings, belts and pulleys are renewed as a set where wear is shared.

What exhaust fan repair costs, and repair or replace

Small domestic fans are usually replaced. Larger fans are usually repaired. The dividing line is whether the motor and bearings are sold as separate parts.

JobScaleTypical decision

Clean and free a stuck flapSmallDo it

Reconnect or replace a ductSmall to mediumDo it

Switch, isolator or timerSmallRepair

CapacitorSmallRepair

Replace a small bathroom fan like for likeSmallReplace

Motor on a wall, inline or roof fanMediumRepair

Bearings and belt on a larger fanMediumRepair

New fan in a new opening with duct and wiringMedium to largeQuoted after a look at the route

The diagnostic visit is AED 100 plus VAT, and you have a fixed price before any work. The price of a new installation depends mostly on the duct route and the making good, not on the fan.

We cover all of Dubai, including Dubai Marina, JBR, Palm Jumeirah, JLT, Downtown, Business Bay, Jumeirah, Al Barsha, Dubai Hills and Deira.

Frequently asked questions

Who repairs exhaust fans in Dubai?

One Click Dubai repairs, replaces and installs exhaust fans across Dubai, the same day. Call or WhatsApp +971 55 209 9785.

Why has my exhaust fan stopped working?

No power from the switch or circuit, a failed capacitor, seized bearings or a burnt-out motor.

Why is my exhaust fan so noisy?

Worn bearings, dirt on the blades, a loose cover or mounting, or something touching the blades.

Why is my bathroom fan running without clearing the steam?

The duct is disconnected, crushed or blocked, the backdraft flap is stuck, or no air can enter under the door.

Can an exhaust fan motor be repaired?

On wall, inline, roof and commercial fans, yes. Small bathroom fans are replaced complete.

Do you install new exhaust fans?

Yes, including the opening, the duct to outside and the wiring.

Do you install bathroom exhaust fans?

Yes, ceiling, wall and window types, with timers or humidity control if wanted.

What size fan do I need?

Multiply the room volume by the air changes per hour: about 8 to 10 for a bathroom and 15 or more for a kitchen, with a margin for the duct.

How often should an exhaust fan be cleaned?

At least twice a year, and every one to two months in a kitchen with daily frying.

Do you repair commercial exhaust fans?

Yes, including three-phase, belt-driven and roof-mounted fans.

How much does exhaust fan repair cost?

The diagnostic visit is AED 100 plus VAT. The repair or replacement is quoted at a fixed price before work starts.

Is the work guaranteed?

Yes, for one month on parts and labour.

Book an exhaust fan repair or installation

Call or WhatsApp +971 55 209 9785 at any hour, or use the booking form. Tell us where the fan is, what it does or does not do, and send a photo of the fan and its grille. For a new fan, tell us the room size and where the nearest outside wall or shaft is.

Exhaust Fan Repair and Installation in in Dubai