FAQ

Oxygen Concentrato

1. Q: What’s the standard oxygen purity of your home oxygen machine?

A: Our home concentrator maintains 93%±3% oxygen concentration under rated flow, standard 1-5L continuous adjustable flow for household oxygen therapy.

2. Q: Can oxygen concentrator replace CPAP for sleep apnea treatment?

A: No. Oxygen machine only boosts oxygen level, it cannot hold your airway open during sleep; CPAP uses pressurized air to prevent throat collapse, they target different symptoms strictly.

3. Q: Is it possible to connect oxygen concentrator with CPAP machine?

A: Yes under doctor’s prescription. Use bleed-in adapter to link continuous-flow oxygen concentrator to CPAP oxygen inlet, mainly for patients with both OSA & COPD overlap syndrome.

4. Q: How long can the concentrator run continuously per day?

A: Home model supports 24h non-stop daily operation for long-term home oxygen care.

5. Q: Why does my oxygen machine make beeping alerts?

A: Alarm triggers for low oxygen purity, low airflow, power cut or filter clogging; clean filters first, contact us for further troubleshooting if alert persists.

CPAP Machine

1. Q: What’s Auto-CPAP difference from fixed-pressure CPAP?

A: Fixed CPAP runs on constant pressure set by doctor; Auto CPAP auto-adjusts air pressure according to real-time sleep breathing condition for better comfort.

2. Q: How often should I replace CPAP mask cushions & filters?

A: Mask silicone cushion every 3-6 months; disposable filter monthly, reusable washable filter every 6 months for hygiene & stable machine performance.

3. Q: Is humidifier necessary for CPAP daily use?

A: Recommended for most users to avoid dry nose/throat irritation caused by continuous pressurized airflow.

Distinction Q&A

1. Q: I have both low oxygen & sleep apnea, which device do I need?

A: Consult your physician first; most cases require CPAP plus matched oxygen concentrator for combined therapy.

Part3 Shipping & After-sales FAQ

1. Q: Where do you ship my order from?

A: All items ship directly from our New York domestic warehouse, no overseas customs transit.

2. Q: How fast is US domestic delivery?

A: Orders processed in 1-2 business days after order confirmed; standard delivery takes 3-7 working days across most US states.

3. Q: What’s your return policy window?

A: 30-day free return & exchange counted from delivery date. Unused items with full original package & complete accessories qualify for return.

4. Q: Who bears return shipping cost?

A: We cover return freight for defective/wrong shipped items; customers afford return shipping for personal change-of-mind returns.

5. Q: How long will refund take after you receive returned goods?

A: We inspect returned items within 2-5 working days and issue full refund to original payment account right after confirmation.