The short answer
A steady low hum is normal. Grinding, squealing, banging, or loud rattling usually means a mechanical problem that should be inspected before it becomes a compressor failure.
Common causes
- Loose panel or mounting brackets
- Fan blade hitting debris or a bent guard
- Worn motor bearings
- Hissing from a refrigerant leak
- Failing compressor internals
What you can safely check
These are low-risk checks only. Do not open live electrical panels, handle refrigerant, or dismantle fuel systems. If anything feels unsafe, stop and book a verified professional.
- Note when the noise happens: start-up, while running, or shut-down
- Gently confirm outdoor panels are seated — do not remove covers
- Clear obvious leaves from the outdoor cage without putting hands near the fan while powered
- Switch off if the noise is harsh grinding or metallic banging
When to call a professional
- Smoke, burning smell, or sparks
- Sudden loss of cooling with loud new noises
- Vibration strong enough to shake the wall bracket
How Tușe and iRanti help
Open the Tuse app and describe what is happening in your own words — for example, “AC making noise”. iRanti reads the description, suggests the likely service category and a price band, and routes you toward a verified ac repair professional. It is a preliminary assessment, not a definitive remote diagnosis: the artisan still inspects on site before any repair.
Starting price for AC repair
AC repair on Tuse starts from ₦12,000. That is starting guidance, not a guaranteed final quote. Scope, parts, and complexity can change the total — you see the price in the app before you confirm, and any on-site change needs your approval first.
See the AC repair service page
FAQs
Is a noisy AC dangerous?
Not always, but grinding and banging can precede expensive failures. Switch off and book a check if the sound is new and harsh.
Related problems
Book a verified artisan
Identity-checked, location-matched, paid securely in-app.