Noise is the most diagnosable symptom on this site because the sound names the part. Squealing is a bearing or an idler pulley; grinding is metal on metal and means stop; rhythmic thumping is a load imbalance or a worn roller; buzzing that stops when you open the door is a fan hitting ice; and banging during a spin is suspension. Match the sound first, because it changes both the cost and how long you can safely keep using the machine.
Read this first
- Grinding metal on metal means stop using the appliance now. Continuing turns a parts job into a replacement.
- Unplug before spinning a drum by hand or reaching near a fan blade. An evaporator fan starts the moment the door switch closes.
- A refrigerator that has started banging at compressor start-up should be moved off the sealed-system question and onto a technician — that is not a noise you fix from the outside.
What it usually means
Most appliance noise is a bearing or a rotating part telling you it is wearing out, and that is useful — it is one of the few faults with a warning period. A dryer that has started squealing will keep running for weeks, but replacing a roughly $15 idler pulley now is a different repair from replacing a seized drum shaft later. The same applies to a washer's tub bearing, which rumbles for months before it destroys the seal and starts leaking.
Two sounds are exceptions and mean stop immediately. Grinding metal on metal in a dryer means the drum has worn through its front or rear support and is cutting into the cabinet. And a loud bang or thump from a compressor at start-up on any refrigeration appliance means the compressor mounts or the compressor itself are failing. Neither improves with use.
What to check first
Name the sound before you open anything
Squeal, grind, hum, buzz, click, rattle, thump or bang. Note whether it happens at start-up, throughout the cycle, or only during spin or defrost. That single sentence is also the most useful thing you can give a technician on the phone.
Level the machine and check the floor
Set a bubble level on the top and adjust the feet until it does not rock at any corner. A washer or dryer on an uneven or springy floor will walk and bang regardless of how healthy it is. On a new washer, confirm the shipping bolts were removed — leaving them in produces a spectacular noise and destroys the suspension.
Empty and re-run
Run a washer empty and a dryer empty. If an empty machine is quiet, the noise is a load-distribution problem, not a mechanical fault. If an empty machine still makes the sound, it is a part.
Check for loose items
Coins, buttons and underwire in a dryer drum or a washer's outer tub, ice striking a refrigerator's evaporator fan, and a wine cooler's racks not fully seated all produce alarming noises with trivial causes. Look before you order parts.
Isolate a refrigerator noise by opening the door
Buzzing or rattling that stops the instant you open the freezer door is the evaporator fan — it only runs with the door closed. Noise that continues is the condenser fan or the compressor at the bottom rear.
Spin a dryer drum by hand
With the machine unplugged and the belt released, turn the drum. Roughness, grinding or a wobble tells you the rollers or the rear bearing are worn, and you have located the squeal without a diagnostic fee.
DIY, technician, or licensed trade?
This is about who is allowed to do the work, not how hard it is. The bottom row is not a difficulty rating — it is the legal and safety line, and it does not move for confidence or experience.
- Levelling a machine and removing shipping bolts
- Replacing a dryer belt, idler pulley and drum roller kit
- Clearing ice from a refrigerator evaporator fan blade
- Degreasing a range hood blower wheel and reseating filters
- Replacing washer suspension rods, dampers or a shock absorber set
- Replacing a tub bearing and seal — a full teardown on most front-loaders
- Replacing a fan motor, a compressor start relay or a hood blower assembly
- Any compressor work on a refrigerator, freezer or wine cooler — it opens the sealed refrigerant circuit and is EPA Section 608 work
Likely parts and what they cost
Our estimates for a typical US job, not quotes. “Part only” is what the component costs bought online against a model number; “installed” adds a technician’s diagnostic and labor.
| Part | Part only | Installed | Notes |
|---|---|---|---|
| Dryer belt, idler and roller kit | $25–$80 | $150–$350 | Fit the whole kit. Replacing one worn part next to two others buys you months. |
| Washer suspension rods or dampers | $40–$120 | $200–$450 | Always replace as a set, or the machine stays out of balance. |
| Evaporator or condenser fan motor | $40–$140 | $180–$400 | A fan bearing that has started clicking will get louder, not better. |
| Washer tub bearing and seal | $60–$180 | $350–$600 | Weigh against replacement — on an older machine this is often the end of it. |
| Range hood blower wheel or motor | $45–$160 | $150–$450 | Grease build-up unbalances the wheel; degreasing sometimes fixes it outright. |
Prices are general estimates for typical US jobs, not quotes. What you actually pay depends on your appliance's brand and age, the part required, your region, and each shop's labour rate. Get the model number off the appliance before ordering — the same part varies in price across models.
Step-by-step guides for this symptom
6 guides cover this fault across 6 appliance types. Each one works through it in diagnostic order, with tools, parts and the point at which it stops being a DIY job.
- 20–60 minutesRefrigerator
Refrigerator Making Noise — Identify the Sound, Find the Part
Buzzing, clicking, squealing or rattling from your fridge? Match the sound to the failing part — fan motors, start relay, drain pan or compressor — and fix it.
- 20–60 minutesFreezer
Freezer Making Noise — Match the Sound to the Part
Buzzing, clicking, squealing or rattling from a freezer each point at a different part. Identify the sound, then check the fan, relay, drain pan or mounts.
- 60–150 minutesDryer
Dryer Squealing or Thumping — Find the Worn Part
Squeal, thump, scrape or rumble? Each dryer noise points at a different part — drum rollers, idler pulley, glides, blower wheel or motor bearings. Here is how to tell.
- 30–90 minutesWasher
Washer Shaking and Walking — Stop the Vibration
A washer that bangs and walks across the floor during spin usually has shipping bolts, bad leveling, or worn suspension. Diagnose and fix it step by step.
- 20–60 minutesWine Cooler
Wine Cooler Noisy or Vibrating — Quiet It Without Harming the Wine
Buzzing, rattling or humming from a wine fridge is usually a fan, a loose rack or an unlevel cabinet. Identify each source and quiet it down properly.
- 45–120 minutesRange Hood
Range Hood Loud or Rattling — Quiet It Down
Rattle, buzz, whine or a roar out of proportion to the airflow. Clean the blower wheel, secure the filters and ducting, and check the motor bearings.