10 Expert-Recommended Oxygen Concentrators for 2025: Reliable, Affordable, and Easy to Use

3. CAIRE Companion 5

Best For: 24/7 home oxygen therapy
Key Advantages:

• Delivers 0.5-5 LPM continuous flow
• Only 45 dB noise level
• Energy Star certified

Maintenance:
Think about having it beside your bed while you sleep or in the living room during the day. It’s ideal for people recovering from respiratory infections or surgeries who need reliable oxygen 24/7. And the best part? It doesn't drive up your electric bill like older models.