ResMed CPAP Making Noise: How to Fix Buzzing, Grinding, and Rattling

Quick Answer

ResMed AirSense 10 and 11 devices normally operate at about 26 dBA, which is quieter than a whisper. When the device becomes noticeably louder, the type of noise identifies the cause.

ResMed AirSense 10 and 11 devices normally operate at about 26 dBA, which is quieter than a whisper. When the device becomes noticeably louder, the type of noise identifies the cause. A buzzing or vibration is typically the device resonating against the nightstand surface and is fixed by placing a towel or rubber mat underneath. A grinding or scraping sound indicates motor bearing wear and means the motor is approaching end of life. A whistling noise comes from an air leak at the mask, tubing connection, or exhalation port. Gurgling means water has condensed inside the tubing. Each noise type has a different fix, but only grinding requires DME service.

ResmedCpapSeverity: low75% DIY Success

Time to Fix

2–15 min

Difficulty

beginner

Parts Cost

$0 – $0

Tools Needed

Folded towel or rubber mat, Soft dry cloth

What Does the NOISE Code Mean?

Identify the noise type: buzzing means surface vibration, grinding means motor wear, whistling means air leak, gurgling means water in tubing. Only grinding requires professional service.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Device vibrating against nightstand surface40%

Motor bearings wearing from age24%

Air leak at mask cushion or tubing connection14%

Inlet filter clogged creating turbulent airflow12%

Water condensation pooling in tubing10%

Symptoms You May Notice

Buzzing or rattling during therapy
Grinding or scraping sound from the device
Whistling from mask or tubing area
Gurgling or water splashing sounds
Device noticeably louder than when new
Vibration felt through the nightstand

Can you reset a Resmed cpap to clear the NOISE code?

AirSense 10: Settings > Device > Reset Device. AirSense 11: My Device > Factory Reset. A reset does not fix noise issues since they are physical or mechanical in nature.

Tools Required for Diagnosis

Folded towel or rubber matSoft dry cloth

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Identify the noise type

Identify the noise type. Start therapy and listen closely. Buzzing/rattling that stops when you lift the device indicates surface vibration. Whistling that changes when you press the mask tighter indicates a leak. Gurgling indicates water in the tubing. Grinding from inside the device indicates motor wear.

For buzzing or vibration

For whistling

For grinding

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
ResMed AirSense 10 Fine Filter KitN/A · $0–$0	N/A	$0 – $0
ResMed mask cushion (model-specific)N/A · $0–$0	N/A	$0 – $0
ResMed ClimateLineAir Heated TubingN/A · $0–$0	N/A	$0 – $0

Verify part fitment for your Resmed model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPLACE

Estimated Cost: $0 (Parts) vs $800 (New Machine)

Frequently Asked Questions

How loud should a ResMed CPAP be?

The AirSense 10 operates at about 26 dBA and the AirSense 11 at about 25 dBA, which is quieter than a whisper. You should hear a soft, smooth hum during therapy. If the noise is loud enough to disturb your sleep or your partner's sleep, something is wrong.

Can a noisy CPAP still deliver proper therapy?

It depends on the noise source. Vibration and water gurgling do not affect pressure delivery. A whistling leak reduces therapy effectiveness because pressure is escaping. A grinding motor may still deliver pressure but could fail completely without warning - have it checked by your DME.

Does the noise get worse at higher pressures?

Yes. Motor noise, air leak whistling, and surface vibration all increase with higher pressure because the motor spins faster and air flows at greater volume. If your noise is only noticeable at high pressure, the AutoSet algorithm may be pushing to near-max pressure, which is worth discussing with your sleep specialist.

Related Resmed Cpap Error Codes

Code: HUBResMed CPAP Error Codes: Complete AirSense 10 and 11 Fault Guide Code: 12ResMed CPAP Error 12: Motor Fault on AirSense 10 and AirSense 11 Code: HIGH-LEAKResMed CPAP High Leak Detected Code: LEAK-WATERResMed CPAP Leaking Water: Causes and Fixes

Models Known to Experience NOISE Errors

This repair applies to most Resmed cpaps with this error code. Common model numbers include:

AirSense 10 AutoSet, AirSense 10 CPAP, AirSense 10 Elite, AirSense 10 For Her, AirSense 11 AutoSet, AirCurve 10 VAuto, AirCurve 10 ST

Last verified for technical accuracy on March 15, 2026