Can the EcoFlow DELTA 3 Max Run a CPAP Machine (heated humidifier)?
✅ Yes — the EcoFlow DELTA 3 Max can run a CPAP Machine (heated humidifier). Its 2400W continuous output covers the 75W draw, giving roughly 20.5 hours of continuous running.
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The Checks, One by One
| Check | Result | Detail |
|---|---|---|
| Pure sine wave | ✅ pass | Inverter is confirmed pure sine wave, which this appliance requires. |
| Running watts | ✅ pass | 2400W continuous output covers the appliance's 75W running draw, leaving 2325W of headroom. |
| Runtime | ℹ️ info | 2048Wh of battery at a 75% AC-inverter efficiency factor gives roughly 20.5 hours of continuous running at 75W. |
Side by Side
| Spec | EcoFlow DELTA 3 Max | CPAP Machine (heated humidifier) needs |
|---|---|---|
| Continuous output | 2400W | 75W |
| Startup surge | 4800W | No meaningful surge |
| Battery capacity | 2048Wh | — |
| Inverter | Pure sine wave | Pure sine wave required |
How Long It Would Run
At a continuous 75W draw, the EcoFlow DELTA 3 Max's 2048Wh battery gives roughly 20.5 hours after accounting for a 75% AC-inverter efficiency factor.
About This Appliance
The heated humidifier is the single biggest swing factor in CPAP runtime — it roughly 2.5x's the draw versus the same machine with humidification off.
Other Units With This Appliance
Methodology
Verdict computed from this project's verified entity data using the same gates as its use-case scoring: waveform requirement first (an unconfirmed inverter type fails rather than passing), then continuous watts, then startup surge, then runtime at a 75% AC-inverter efficiency factor. Entity specs verified 2026-09-13; appliance figure from data/use-cases/cpap.json (draw_scenarios_w.with_heated_humidifier).