Most appliance noises are harmless: a steady compressor hum, a defrost pop, the gurgle of a dishwasher draining. The sounds that matter are the new ones — a grinding, squealing or rhythmic banging that wasn't there last month. As a rule of thumb, a sound that is steady, soft and familiar is usually normal operation, while a sound that is loud, metallic, intermittent or getting worse is your appliance telling you a part is wearing out.
This guide walks through each appliance — refrigerator, dryer, washer, dishwasher, stove and oven — so you can tell a benign noise from an early warning, and know when waiting will turn a small fix into an expensive one. Where a step touches gas, sealed refrigerant systems or live electrical parts, that work is technician-only.
The one rule that saves you money: new, loud, or worsening
You don't need to identify every sound to protect your appliance. You only need to notice three things:
- Is it new? A noise that started this week, on a machine that was quiet last month, is the one to watch.
- Is it loud or metallic? Grinding, squealing and scraping are metal-on-metal or failing-bearing sounds. Soft hums, gurgles and clicks usually aren't.
- Is it getting worse? A squeak that becomes a scrape, or a hum that becomes a buzz, signals a part actively wearing down.
Why the urgency? Because bearing and pulley failures tend to escalate rather than settle. Repair guidance is consistent on this point: a worn dryer idler pulley starts as a squeak and can progress to a loud scraping or thumping noise over time, as friction wears the part further. Catching the squeal stage often means a small part; ignoring it until the motor or compressor gives out usually means a much larger bill. That's the whole case for acting on a noise early.
Refrigerator: hums and pops are fine, grinding and clicking are not
Your fridge is the noisiest appliance you own that's supposed to be noisy. Normal sounds include a steady low hum (the compressor running), a soft click when the compressor cycles on or off, occasional pops and crackles, and gurgling or bubbling. The cracking and popping come from plastic and metal parts expanding and contracting as the temperature changes; the gurgle is refrigerant moving through the cooling system. Modern auto-defrost units also click, pop and drip during defrost cycles — all normal.
Sounds that mean trouble:
- Repeated clicking every few minutes, especially if the fridge isn't cooling — often a failing compressor start relay, or a compressor struggling to start.
- Loud buzzing or humming noticeably louder than usual, particularly alongside poor cooling.
- Grinding or squealing — commonly a failing evaporator or condenser fan, or worn bearings. A fan ticking against ice buildup is a frequent culprit.
- Knocking or clanking from inside the cabinet.
The catch with refrigerators is the sealed system: diagnosing compressor, relay and refrigerant faults safely requires a technician. A clicking-but-not-cooling fridge should be looked at quickly — the difference between a fan or relay and a dead compressor is large. See our refrigerator repair page for what a proper diagnosis covers.
Dryer: a squeak today is cheaper than a seized drum tomorrow
A dryer's tumbling load makes some low rumble normal. What you're listening for is a squeak, squeal, grind or repeating thump — these point to specific worn parts:
- Squealing or squeaking: usually the idler pulley or worn drum-support rollers. The pulley rotates at high speed and fails from friction over time.
- Repeating thump: often a drive belt that's gone hard and brittle, with sections separating, or unevenly worn drum rollers.
- Metal-on-metal scraping: worn drum glides, where the metal drum has started rubbing the cabinet.
One genuinely safe DIY check: unplug the dryer, open the door, and slowly rotate the drum by hand. Listen for where the noise comes from and feel for resistance, and remove any coins, screws or wires that slipped past the drum seal — small loose objects are a common, free fix. Anything beyond that (replacing rollers, belt or pulley) means partial disassembly and is best left to a tech. The reason to move quickly: drum rollers and glides should be replaced as a worn set, and a neglected squeal can progress to a drum that won't turn freely. Our dryer repair page covers these noise faults in detail.
Washer: some spin vibration is normal, violent banging is not
A small amount of vibration during the spin cycle is normal. What isn't normal is a washer that "walks" across the floor, bangs, clangs or shakes violently — and the louder and higher the spin speed, the more a worn part reveals itself.
- Deep roar or grinding that turns the spin into a racket: worn drum bearings. A tell-tale sign on a front-loader is rusty streaks where water has seeped past a failing rear seal onto the bearing.
- Loud banging or clanging during spin: worn shock absorbers (front-loaders) or weakened suspension springs, letting the tub crash against the cabinet. If you press down on the tub and it sags heavily and returns slowly, the dampers are likely worn.
- One-off banging: often just an unbalanced load — stop, redistribute the laundry, and restart before assuming the worst.
Bearing and suspension work is involved and best diagnosed on-site, because a grinding bearing left to run can damage the seal, tub and basket. Start with our washing machine repair page if the noise persists after you've checked the load and that the machine is level.
Dishwasher: drain hum is fine, grinding usually means something's stuck
Dishwashers are quieter than they used to be, so a new noise stands out. Normal sounds: a low hum from the drain pump and a sucking or gurgling sound as water is pushed through the drain hose at the end of a cycle.
Trouble sounds — and the one you can often fix yourself:
- Grinding or rattling: most often a hard object lodged near the chopper blade or drain impeller — a popcorn kernel, fruit pit, or a shard of broken glass or ceramic the pump can't break down. This is frequently a DIY fix: with the dishwasher powered off, remove the lower rack and filter and check the sump area for debris.
- Deep, rough grinding that worsens over time: worn motor or pump bearings — more common on older machines, and a parts-level repair.
- Scraping: can mean a damaged or dislodged impeller.
If the noise continues after you've cleared the sump, the pump itself is the likely cause and worth a professional look — see our dishwasher repair page. Clearing debris early also prevents a small obstruction from straining the pump.
Stove and oven: clicking, ticking and fan noise decoded
Gas stove clicking is normal at one moment only: when you turn a burner to light it, the igniter clicks a few times before the flame catches, then stops. Persistent clicking — after the burner is lit, or when the stove is off — is not normal. Common safe causes are a wet or dirty spark electrode, a misaligned burner cap, or moisture after a spill or cleaning; realigning the cap and drying the area resolves many cases at no cost. But if clicking continues and you smell gas, stop using the stove, leave, and contact your gas utility immediately. Igniter, spark-module and switch repairs on a gas appliance are technician-only.
For ovens, a convection model has a fan, and that fan runs on bearings. As those bearings dry out and wear, they create squeaking, grinding or other friction noises; a humming or buzzing that grows louder over time points to a failing fan motor. Because the bearings in these small motors generally can't be re-lubricated or serviced on their own, a persistently noisy fan usually means replacing the motor — and the wiring and high-temperature environment make this a job for a tech. Our stove repair and oven repair pages outline how these are diagnosed safely.
When a noise needs a tech — before it gets expensive
Call a technician when a noise is new, loud or metallic, and getting worse — and especially in these cases:
- Any grinding, squealing or scraping on a fridge, dryer, washer, dishwasher or oven fan. These are bearing and friction sounds that escalate.
- A fridge clicking and not cooling — a relay or fan caught early is far cheaper than a dead compressor.
- A washer banging or grinding on spin, particularly with rust streaks on the drum.
- A gas stove clicking with any smell of gas — leave and call the utility first, then book service.
When you book, a qualified diagnosis matters: our lead technician, Anthony, is Red Seal qualified, 313A-licensed and TSSA-certified, and leads his own team, with the work backed by $2M general liability insurance and OEM parts. We charge a flat diagnostic fee that is credited toward the repair if you proceed, give a 90-day workmanship warranty, and confirm any cost on-site — appliance repair pricing in the GTA varies by part and model, so we quote real numbers after we've heard and seen the fault, not before. We serve Toronto and the wider GTA, including Mississauga, Brampton and Markham. You can also start from our Toronto & GTA appliance repair hub to find your appliance and city.
Related repair pages
Frequently asked questions
Is it normal for my refrigerator to hum, pop, and gurgle?
Yes. A steady low hum is the compressor running; pops and crackles are plastic and metal parts expanding and contracting as the temperature changes; and gurgling or bubbling is refrigerant moving through the cooling system. Auto-defrost fridges also click and drip during defrost cycles. These are all normal. Watch instead for loud buzzing, grinding, knocking, or repeated clicking every few minutes — especially if the fridge isn't cooling.
My dryer is squealing — can I fix it myself?
You can do the safe checks: unplug the dryer, rotate the drum by hand to locate the noise, and remove any coins, screws, or wires that slipped past the drum seal — loose objects are a common free fix. But a true squeal usually means a worn idler pulley or drum rollers, which require partial disassembly and are best replaced as a set by a technician. Acting at the squeak stage is cheaper than waiting for the drum to bind up.
Why is my dishwasher making a grinding noise?
Most often a hard object is lodged near the chopper blade or drain impeller — a popcorn kernel, fruit pit, or a shard of glass or ceramic. With the dishwasher powered off, remove the lower rack and filter and clear the sump; this is frequently a DIY fix. A deeper grinding that worsens over time usually means worn pump bearings, more common on older machines, which is a parts-level repair best handled by a tech.
My gas stove keeps clicking — is that dangerous?
Clicking is normal only briefly when you light a burner, then it should stop. Persistent clicking is usually a wet or dirty spark electrode or a misaligned burner cap, and realigning the cap and drying the area often fixes it at no cost. However, if the clicking continues and you smell gas, stop using the stove, leave, and contact your gas utility immediately. Igniter and spark-module repairs on a gas appliance are technician-only.
When does an appliance noise actually need a technician?
Call a tech when a noise is new, loud or metallic, and getting worse — particularly any grinding, squealing, or scraping (bearing and friction sounds that escalate), a fridge clicking but not cooling, or a washer banging on spin with rust streaks on the drum. Any gas-stove clicking combined with a gas smell is a utility call first. Catching these early often means a small part instead of a failed motor or compressor.