Humming, rattling, whistling or loud startup noise — AC too noisy? It's not always "old unit normal." Common causes: worn fan bearings, loose mounting, dirty blades, outdoor compressor issues.
AlexProService diagnoses on site, repair from 180,000 UZS, arrival usually within an hour, 8:00–22:00. Free diagnostics with repair. +998 99 411 47 57, **@Aleks_Pro_servis**.
Summary
The essentials in a minute
In detail
Types of noise and what they mean
Whistle or whine — blade hitting shroud or dust buildup. Rattle — loose mounting screws, cracked blade.
Steady hum on the outdoor unit is normal for the compressor, but suddenly louder — wear, low freon or overheating.
Clicks on startup — relay and capacitor; repeated click-silence cycles need diagnosis.
Cause 1: fan and bearings
The indoor fan runs thousands of hours per season. Worn bearings cause grinding, hum or vibration at medium/high speed.
Dirt unbalances the blade — wobble and more noise. Cleaning sometimes helps; worn bearings need fan or motor replacement.
Our technician removes the blade, checks play and replaces the assembly. Part of AC repair.
Cause 2: mounting and vibration
A loose bracket makes the wall "drum" and rattle. Outdoor units without rubber pads transmit hum indoors.
Poor line insulation, copper pipe hitting the wall — rattle on compressor start.
Tightening mounts and rubber spacers often fix it without expensive parts.
Cause 3: compressor and outdoor unit
The outdoor compressor is the loudest part. Louder operation may mean low refrigerant, stuck condenser fan or compressor wear.
Leaves or dust on the outdoor fan cause hum and overheating. Coil cleaning — from 180,000 UZS on a service visit.
Metallic knocking — don't delay; the compressor may fail completely.
What to check before the technician arrives
- Noise on different fan speeds — only high or always?
- Does the indoor unit wobble on the bracket?
- Outdoor unit — fan clear of debris, coil not blocked?
- Burning smell with loud hum — turn off the breaker immediately.
Note when noise started (after cleaning, winter, storm). +998 99 411 47 57, **Telegram**.
AlexProService noisy AC repair
Tashkent visit — usually within an hour, 8:00–22:00. We check indoor/outdoor fans, mounts, refrigerant pressure and electrics.
Fixed price before work. Cleaning, fan, bearing or capacitor replacement as needed. Free diagnostics with repair. Warranty.
AC repair in Tashkent — Samsung, LG, Midea, Gree, Artel, Daikin and more.
Takeaway
Conclusion
If your AC is unusually noisy, don't wait for failure. AlexProService finds and fixes the cause from 180,000 UZS, arrives in ~1 hour. +998 99 411 47 57 or **@Aleks_Pro_servis**. AC repair.
FAQ
Frequently asked questions
01Is outdoor unit humming normal?+
Light hum while the compressor runs is normal. Sudden increase, knocking or grinding needs diagnosis.
02Will cleaning reduce noise?+
If dirt on the blade is the cause — yes. Worn bearings won't be fixed by cleaning alone.
03Fan replacement cost?+
Depends on model. Roughly from 180,000–250,000 UZS with labor. Exact quote after inspection.
04Can I keep using a noisy AC?+
Briefly if there's no burning smell, but a worn fan may seize and overheat — call a technician.
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