Fridge Running Constantly? Causes, Tests & Fixes | Airtight Fridge Seals
Airtight Fridge Seals manufactures Australian-made replacement seals for most fridge models, with fast nationwide shipping.
Why a Fridge Runs Constantly
A good fridge cycles on and off during normal use. When it runs continuously, something is preventing it from reaching the correct temperature.
- Warm air leaking through a damaged door seal
- Poor air circulation inside the fridge
- Thermostat overcooling due to air leaks
- Dirty condenser coils
- Blocked internal vents or overloaded shelves
Main Seal-Related Causes (Most Common)
1. Leaking or Worn Door Seal
If the seal is cracked or not sitting flat, warm air enters the fridge and forces the compressor to run constantly. This is one of the most common causes of a fridge running non-stop.
See the different fridge seal types to determine which type your fridge uses.
2. Weak Magnetic Grip
A weak magnet prevents full door closure, increasing cooling time.
3. Hardened or Flattened PVC
Old gaskets lose flexibility and can’t create an airtight seal.
4. Door Misalignment
Loose or uneven hinges stop the seal from touching the cabinet properly.
Other Possible Causes (Non-Seal Issues)
1. Blocked Air Vents
Overloaded shelves or items placed against vents disrupt airflow.
2. Dirty Condenser Coils
Dust buildup reduces cooling efficiency and extends run time.
3. Temperature Set Too Low
A fridge set below 3°C may run non-stop.
4. Overloading the Fridge
Too many items reduce airflow and cooling effectiveness.
How to Test If the Door Seal Is the Problem
1. Paper Test
Close the door on a sheet of paper. If it slides out easily, the seal isn’t gripping properly.
2. Light Test
Turn off the room lights and check for light escaping around the gasket edge.
3. Cold-Air Drift Test
Move your hand around the door edges. If you feel cold air escaping, the seal is leaking.
4. Visual Inspection
Look for cracks, splits, gaps, or flattened gasket sections.
How to Fix a Fridge That Runs Constantly
1. Clean the Door Seal
Dirt or grease prevents proper sealing. Wipe the gasket with warm soapy water.
2. Check Door Alignment
Ensure the door sits level and closes smoothly.
3. Clear the Vents
Make sure food is not blocking air circulation.
4. Clean Condenser Coils
Remove dust from the back or base of the fridge.
5. Replace the Door Seal
If the seal is cracked, weak, or warped — replacement is the only reliable fix.
When You Should Replace the Seal
Replace the seal if you notice:
- The fridge runs almost all day
- You feel cold air leaking from the edges
- The magnet doesn’t grab firmly
- Visible cracks or splits in the gasket
- Food spoils faster than usual
Most fridge seals last 5–10 years depending on climate and usage.
Why Aftermarket Seals Are a Smart Choice
A high-quality aftermarket seal performs extremely well when made to the correct size.
- More affordable than OEM
- Custom-made to your exact measurement
- Fast manufacturing and express delivery
- Australian-made PVC for better durability
Frequently Asked Questions
Why does my fridge keep running?
A leaking door seal is one of the most common causes.
Can a bad seal really cause constant running?
Yes. Air leaks force the fridge to cool nonstop to maintain temperature.
How can I confirm the seal is failing?
Use the paper test, light test, and check for physical damage.
Will replacing the seal fix the issue?
In most cases — yes, especially when warm-air leaks are the cause.
Need a Replacement Fridge Seal?
Airtight Fridge Seals manufactures Australian-made, custom-sized seals for most brands. Order online with fast, free express shipping.
