CPAP & BiPAP Repair: Troubleshooting Common Problems

For people with sleep apnea or respiratory failure, a functioning CPAP or BiPAP machine is a medical necessity. When the machine starts acting up, it’s important to diagnose the problem quickly and get it resolved — because skipping therapy creates real health risks.

Problem: Machine Is Noisy

A CPAP or BiPAP that has suddenly become loud is often a sign of a dirty or failing motor filter. Check the air intake filter and replace it if it’s clogged — most CPAP filters should be replaced monthly. If noise persists after a filter replacement, the motor may be wearing and requires professional inspection.

Problem: Pressure Feels Low

First verify that the mask seal is intact. Worn cushions and loose headgear cause air leaks that feel like low pressure. Replace the mask cushion if it’s more than 3 months old. If the seal is good and pressure still feels inadequate, the motor may be failing — a technician should test the machine’s output.

Problem: Humidifier Issues

Cracked water chambers should be replaced — the part is inexpensive and available from OB1. For condensation in the tubing (“rainout”), a heated hose or tube insulation sleeve often solves the problem.

Problem: Machine Won’t Start

Check the power adapter connection at both the wall and the machine. A “no start” that persists after checking connections requires professional diagnosis — the control board or power supply may be failing.

When to Get Professional Repair

OB1 Medical Equipment repairs most major CPAP and BiPAP brands — ResMed, Philips Respironics, Fisher & Paykel, and others. We offer in-shop repair with fast turnaround and can provide loaner machines while your equipment is being serviced.

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