Range hoods are one of those appliances people forget about until they stop working. Then the kitchen fills with smoke and steam, and suddenly it’s urgent. Most range hood problems have clear causes and straightforward fixes — here are the five most common ones.
Related Services: Range Hood Repair in Vancouver
1. Range hood fan not working
If the fan won’t run at all, start with the basics before assuming a motor problem.
- Check that the unit is plugged in and the circuit breaker hasn’t tripped. Range hoods are usually on a dedicated circuit or shared with other kitchen appliances.
- Test the fan switch. Most hoods have rocker or push-button switches — these fail more often than the motor. You can test continuity with a multimeter or just swap the switch if you can find the right part.
- Check the speed selector. If one speed works but others don’t, the problem is the switch or the speed control module, not the motor.
If none of the speeds work and power is confirmed at the unit, the motor is likely failed. Range hood motors run in humid, grease-laden air, which shortens their life. A motor replacement is usually $80 to $200 in parts and a couple of hours of labour.
2. Range hood not venting properly — poor suction
A hood that runs but doesn’t seem to pull smoke or steam is almost always a grease filter problem, a blocked duct, or a damper that isn’t opening.
Clean the grease filters first. Clogged mesh or baffle filters are the number one cause of poor suction. Remove them and soak in hot soapy water for 15 minutes, then rinse and let dry. Or run them through the dishwasher (top rack, no heat dry). If the filters are severely warped or coated with baked-on grease that won’t come off, replace them — they’re inexpensive.
Check the duct. Built-up grease inside the duct reduces airflow over time. If the duct runs through an exterior wall or attic, check that it’s not crimped, disconnected, or blocked by a bird nest at the exterior vent cap.
Check the damper. The flap that opens when the fan runs can get sticky or stuck. Reach into the duct from inside the hood housing (with the fan off and unplugged) and check whether the damper opens freely. Clean grease buildup around the pivot if it’s sticking.
3. Range hood lights not working
If the lights go out on your range hood, it’s almost always the bulbs. Most range hoods use standard appliance bulbs — 40W incandescent or, on newer units, LED modules. Check the bulb type in your manual and replace accordingly.
If new bulbs don’t fix it: check the light socket for corrosion (steam and grease can corrode contacts over time). Clean the socket with a dry cloth or a small brass brush. If the socket is visibly damaged, it can be replaced.
On hoods with a shared light/fan switch board, a failed control module can kill the lights while leaving the fan working (or vice versa). If cleaning the socket doesn’t help and you’ve confirmed the bulbs are good, the switch/control board is the next suspect.
4. Range hood making noise
A noisy range hood is usually one of three things: something loose, a motor issue, or ductwork vibration.
- Rattling: Check whether the grease filters are seated properly — they can rattle if the clips are worn. Also check whether any duct sections are loose. A metal duct panel vibrating against framing or a wall can be surprisingly loud.
- Humming that’s louder than usual: The motor bearings may be worn. At end of life, the motor starts humming loudly before it fails completely.
- Squealing: Usually the fan blade rubbing against the housing, or a failing motor bearing. Check that the fan blade is secure (loose blade nut) and that nothing is touching the blade during rotation.
- Banging when fan starts or stops: The damper flap opening and closing forcefully. Damper noise is usually a minor irritation, not a repair item.
5. Range hood grease filter clogged — cleaning and replacement
Grease filters need cleaning every one to three months, depending on cooking frequency. A clogged filter doesn’t just hurt suction — it’s a fire risk. Grease buildup in the filter and duct can ignite from stovetop flare-ups.
Mesh filters (most residential hoods): Dishwasher or hot soapy soak, as described above. Do this every month if you cook frequently, every two to three months for average use.
Charcoal/carbon filters (recirculating hoods only): These can’t be cleaned — they have to be replaced. Most charcoal filters last 3 to 6 months with regular cooking. If your hood is recirculating type (no duct to exterior) and smells aren’t being removed, the charcoal filter is spent. Replace it.
Baffle filters (commercial-style hoods): Most dishwasher-safe. Clean every 2 to 4 weeks with heavy cooking.
When to call a technician
Call for help when: the fan motor is failed, the control board needs replacing, the ductwork needs professional cleaning, or you’re dealing with a built-in range hood that requires disassembly of cabinetry to access.
Vancouver Appliance Service repairs range hoods across Metro Vancouver. If the filter cleaning and basic checks don’t solve it, we can diagnose and fix the underlying issue.
