Fridge Making Noise? Here’s What Each Sound Tells You
A refrigerator is one of the few appliances that runs 24 hours a day — so it’s going to make some noise. But there’s a big difference between normal operating sounds and sounds that signal something is wrong. If your fridge is making noise you haven’t heard before, this guide will help you identify what’s causing it and whether you need a repair.
Normal Refrigerator Sounds
Before diagnosing a problem, it helps to know what’s normal:
- Humming or buzzing — the compressor running. Normal.
- Clicking — the compressor or thermostat cycling on and off. Normal.
- Gurgling or dripping — refrigerant moving through the coils. Normal.
- Cracking or popping — plastic components expanding and contracting with temperature changes. Normal.
- Rushing water — ice maker filling. Normal.
Sounds That Signal a Problem
Loud Rattling
Likely cause: Something on top of the fridge is vibrating, or the drain pan underneath has come loose. Less commonly, a failing condenser fan motor.
What to do: Remove items from on top of the fridge first. Check if the drain pan under the unit is seated properly. If the rattle continues and comes from inside the fridge, a technician should check the fan motors.
Loud Humming or Buzzing (Louder Than Usual)
Likely cause: A struggling compressor or a condenser/evaporator fan motor that’s wearing out. Dirty condenser coils can also cause the compressor to work harder and hum louder.
What to do: Vacuum the condenser coils (usually at the back or underneath the unit) to remove dust. If the noise persists or the fridge isn’t cooling properly alongside the noise, the compressor or fan motor may need replacement.
Knocking or Banging
Likely cause: The compressor is starting or stopping under strain, or the ice maker is ejecting ice with force into a nearly-empty bin.
What to do: If it’s rhythmic and linked to the ice maker, it’s usually normal. If it’s irregular and accompanied by cooling problems, have the compressor inspected.
Squealing or Squeaking
Likely cause: A fan motor bearing is worn — typically the evaporator fan (inside the freezer compartment) or the condenser fan (near the back bottom of the unit).
What to do: This noise usually gets worse over time. A worn fan motor bearing will eventually fail, causing the fridge to lose cooling. Replace the fan motor sooner rather than later.
Vibrating or Rattling Against the Wall
Likely cause: The refrigerator is not level, or it’s too close to the wall or cabinetry.
What to do: Pull the fridge out slightly and use adjustable levelling feet (on the front) to balance it. Leave at least an inch of clearance at the back.
Clicking That Won’t Stop
Likely cause: The compressor is attempting to start but failing — often due to a faulty start relay. This repeated click-attempt-click pattern is a clear sign of compressor starting issues.
What to do: This needs professional attention. A failed start relay is a relatively inexpensive repair; a failed compressor is a major one.
When to Call for Fridge Repair in Ottawa
If your fridge is making unusual noises and showing any of the following, book a repair soon:
- The fridge or freezer isn’t reaching the right temperature
- Food is spoiling faster than normal
- You notice frost buildup in unusual places
- The noise has appeared suddenly and is getting louder
Our team at Ottawa Appliance Pro diagnoses fridge problems across all brands. We serve Westboro, Ottawa, and surrounding areas with same-day appointments available.
FAQ
Should I be worried about a gurgling sound in my fridge?
No — gurgling is refrigerant moving through the system and is completely normal. It’s often most noticeable right after the compressor shuts off.
My fridge is making a loud humming noise but seems to be cooling fine. Should I repair it?
Loud humming with normal cooling often points to dirty condenser coils. Clean them first. If the humming continues, the fan motor may be wearing out — worth having inspected to avoid a breakdown.
How much does fridge repair cost in Ottawa?
Fan motor replacements typically run $150–$250 including parts and labour. Compressor work varies widely. See our full cost guide for Ottawa pricing.