First: move perishables to a cooler with ice packs. Food safety first — a fridge above 40°F/4°C for 2+ hours means tossing dairy and meat.
Fix 1 — Thermostat setting
Sounds obvious, but check: kids, cleaning, and power blips change settings. Fridge should be 37–40°F (3–4°C), freezer 0°F (-18°C).
Fix 2 — Clean the condenser coils
- Unplug the fridge.
- Find the coils — usually behind a front grille or on the back.
- Vacuum off dust, then brush with a coil brush ($10).
- Plug back in and wait 24 hours before judging.
Dirty coils are the #1 cause of weak cooling — the fridge can't dump heat.
Fix 3 — Clear the vents
Inside the fridge, find the air vents (usually back wall). Food packed against them blocks cold air circulation. Leave 2 inches of clearance.
Fix 4 — Test door seals
Close the door on a dollar bill. If it slides out easily, the seal is weak and warm air is leaking in. Clean seals with warm soapy water; replace if cracked ($20–50, still DIY-able).
Fix 5 — Check what's around it
Fridge jammed against the wall with no airflow? Needs 2–3 inches clearance on sides and back. Also keep it out of direct sun and away from the oven.
Fix 6 — Listen to the compressor
Constantly running + not cooling = possible refrigerant or compressor issue. That's pro territory.
<div class="safety"> <strong>🛑 Stop and call a pro if:</strong> <ul> <li>Compressor runs nonstop but fridge stays warm</li> <li>You hear clicking/buzzing from the compressor area</li> <li>There's an oily residue under the fridge (refrigerant leak)</li> <li>Anything involving the sealed system — certified techs only</li> </ul> </div>
DIY vs pro cost
| Option | Typical cost |
|---|---|
| DIY (cleaning/adjustments) | $0–$20 |
| Appliance repair visit | $150–$300 |
| Compressor replacement | $400–$700 |
Printable checklist
- [ ] Perishables moved to cooler
- [ ] Thermostat at 37–40°F
- [ ] Coils vacuumed + brushed
- [ ] Vents clear of food
- [ ] Door seals tested + cleaned
- [ ] 2–3" clearance around fridge
- [ ] Wait 24h — cooling now?