Why Is My Fridge Not Cooling Properly?
Fridge too warm or taking ages to cool? This guide covers the most common causes, from dirty condenser coils and blocked vents to failed fans, thermostats, or compressor start relays and how to fix each safely.
Get a Confirmed Fit spare part
At Spares2Repair, when a spare part is matched to your exact model number we call that Confirmed Fit. Because spare parts can vary across production runs, sizes, and revisions, Confirmed Fit is the safest route to reduce wrong-part orders and buy with more confidence.
Option 1Search by full model numberEnter the full model number in the search box above to reach the most accurate spare-part route for your appliance and check for Confirmed Fit.
Option 2Use Fixit Fox FinderUpload a photo of the rating plate, describe the appliance, or get guided help if the model number is hard to read before you order.Option 3Browse spare partsBrowse the main spare-parts category for this appliance, then confirm compatibility by model number before checkout.Start with the search box whenever you have the full model number. Use Fixit Fox Finder if the rating plate is hard to read or you want guided help before ordering. Ordering by appearance alone is more likely to lead to the wrong part.
Browse Fridge & Freezer spare partsWhat Confirmed Fit meansContact customer service
Before you order, use Confirmed Fit
For advice and repair topics like this one, the biggest buying mistake is ordering on appearance alone. Search by the exact model number wherever possible, because small appliance revisions can use different seals, filters, motors, pumps, lamps, shelves, or trims.
Step 1Find the full model numberUse the rating plate, product label, or model-number guide before comparing part photos or sizes.Step 2Understand Confirmed FitUse the full model code, not a short range name, because revisions and production runs can use different parts.Step 3Browse Fridge Freezer spare partsMove from advice into the relevant category page, then confirm compatibility by model number before buying.
At a Glance
- Most common causes: dirty condenser coils, iced evaporator/blocked vents, failed evaporator or condenser fan, faulty thermostat/thermistor, bad start relay/capacitor.
- Start with non-invasive checks (settings, seals, airflow), then test fans and controls.
- Sealed-system issues (low refrigerant, weak compressor) require an F-gas engineer.
Safety First
Unplug before removing panels. If you smell burning, see smoke, or suspect a sealed-system/refrigerant fault, stop and call a qualified engineer.
Quick Checks (5-10 minutes)
- Controls: Set fridge to 3-5 °C and freezer to −18 °C; wait 4-6h for changes.
- Power basics: Light on? Plug/fuse OK? Control not in demo/holiday mode.
- Door seals & airflow: Paper-slip test around gaskets; clear food from vents; 2-5 cm clearance behind cabinet.
- Fans: Hold the freezer door switch closed-listen for the evaporator fan. From the back/below, listen for the condenser fan when the compressor runs.
Likely Causes & What to Do
1) Dirty condenser coils
Dust insulates coils and kills cooling efficiency. How to Clean Fridge Condenser Coils, then retest after several hours.
2) Evaporator iced up / vents blocked
Ice on the evaporator blocks airflow; the freezer may seem OK while the fridge warms. How to Properly Defrost Your Freezer. If the problem returns quickly, test the defrost circuit (heater, sensors, control).
3) Evaporator or condenser fan not running
The evap fan circulates cold air; the condenser fan removes heat from the coils. Either failure leads to poor cooling. Evap fan test/replace: How to Replace a Fridge Freezer Evaporator Fan Condenser fan: inspect for debris/bearings; replace if seized (link to your category).
4) Faulty thermostat / thermistor
Incorrect temperature sensing prevents proper compressor/fan control.. Check with a multimeter; replace if out of spec: How to Replace a Fridge Thermostat
5) Start relay / start capacitor
Rapid clicking and no sustained compressor run usually indicates a failed relay or capacitor. How to Replace a Fridge Compressor Start Relay (add capacitor guide if you host one)
6) Sealed-system or weak compressor
Condenser coils stay cool to the touch and cooling is poor; requires F-gas technician diagnosis (do not vent refrigerant).
Tools & Parts You May Need
- Vacuum & coil brush
- Multimeter (continuity/ohms)
- Door seals Shop Fridge Door Seals
- Evaporator/condenser fans Shop Fridge Fans
- Thermostat/Thermistor Shop Fridge Thermostat
- Start relay/capacitor Shop Fridge Relay
Prevention
- Clean condenser coils every 6-12 months and keep rear clearance.
- Don't overpack; keep vents clear; maintain good door seals.
- Verify temperatures monthly with a thermometer.
FAQ
Why Is My Fridge Not Cooling Properly?
Fridge too warm or taking ages to cool? This guide covers the most common causes, from dirty condenser coils and blocked vents to failed fans, thermostats, or compressor start relays and how to fix each safely.
How do I get a Confirmed Fit fridge & freezer spare part for this fault?
Use the full model number exactly as shown on the rating plate. When Spares2Repair matches that model to a compatible part we call it Confirmed Fit. Similar-looking parts can differ across revisions, production runs, and variants, so model matching is the safest route before ordering.
When should I stop and get professional help?
Stop and seek qualified help if the work involves unsafe live electrics, sealed systems, gas-related risks, or damage that goes beyond straightforward model-matched part replacement.