Inogen
Inogen One G5
$2495
Released 2019-04
Best Portable Oxygen Concentrators · head-to-head
Inogen One G5 vs CAIRE FreeStyle Comfort
A sourced, side-by-side comparison. CAIRE FreeStyle Comfort is cheaper at $2395. Every spec and price links to its source.
CAIRE
CAIRE FreeStyle Comfort
$2395Cheaper
Released 2018-08
Which is better: the Inogen One G5 or CAIRE FreeStyle Comfort?
The Inogen One G5 wins 1 of the 1 specs we compare head to head; the other wins 0. The CAIRE FreeStyle Comfort is the cheaper at $2395. Get the Inogen One G5 for the stronger spec sheet, the CAIRE FreeStyle Comfort to spend less.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Inogen One G5 | CAIRE FreeStyle Comfort |
|---|---|---|
| US price | $2495 | $2395 |
| Brand | Inogen | CAIRE |
| Released | 2019-04 | 2018-08 |
| Oxygen output (ml) | 1260 | 1050 |
| Flow settings | 1–6 | 1–5 |
| Weight (lb) | 4.7 | 5 |
| Battery life hr | 13 | 8 |
| Delivery mode | pulse_dose | pulse_dose |
| Noise (dB) | 39 | 39 |
| Faa approved | Yes | Yes |
| Warranty yr | 3 | 3 |
Sources — Inogen One G5: oxygenconcentratorstore.com (verified 2026-08-01). CAIRE FreeStyle Comfort: oxygenconcentratorstore.com (verified 2026-08-01).
What's the difference between the Inogen One G5 and CAIRE FreeStyle Comfort?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Oxygen output (ml): Inogen One G5 1260 vs CAIRE FreeStyle Comfort 1050
- Flow settings: Inogen One G5 1–6 vs CAIRE FreeStyle Comfort 1–5
- Weight (lb): Inogen One G5 4.7 vs CAIRE FreeStyle Comfort 5
- Battery life hr: Inogen One G5 13 vs CAIRE FreeStyle Comfort 8