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What size power station runs a cpap with heated humidifier?

The heated humidifier and hose multiply CPAP draw — size for the warm setting if you need it.

60 Wrunning watts
95 Wstartup surge
80%duty cycle
427 Whfor 8.0 h

Need to run it alongside other things? Add it to the full sizing tool with the rest of your load.

What size you need for 8.0 h

You need about 427 Wh — and 28 units fit. The smallest sufficient is the Goal Zero Yeti 500X; we never push more capacity than your load can use. Surge to clear: 95 W.
The math
Running watts (everything on at once) = 60 W
Surge watts (worst single startup + the rest running) = 95 W
Average draw (cyclic loads counted by their duty cycle) = 48 W
Watt-hours = 48 W × 8.0 h ÷ 90% usable reserve = 427 Wh
1
Goal Zero Yeti 500Xsmallest that fits
505 Wh 300 W cont · 1,200 W surge ~9.5 h on this load $$
A half-kWh unit for electronics and overnight medical loads.
NMC · ~9 h AC; up to 240 W solar · 13 lb
Check price at Goal Zero → Full specs
2
EcoFlow RIVER 2 Max
512 Wh 500 W cont · 1,000 W surge ~9.6 h on this load $$
A half-kWh unit for CPAP, electronics, and a mini-fridge overnight.
LiFePO4 · ~1 h AC; up to 220 W solar · 13 lb
Check price at EcoFlow → Full specs
3
Jackery Explorer 500
518 Wh 500 W cont · 1,000 W surge ~9.7 h on this load $$
A long-running mid-small unit; NMC chemistry, so store it partly charged.
NMC · ~7.5 h AC; up to 100 W solar · 13 lb
Check price at Jackery → Full specs
4
Goal Zero Yeti 700
677 Wh 1,000 W cont · 1,500 W surge ~13 h on this load $$
Goal Zero’s LiFePO4 value unit — a 1,000 W inverter for fridge and essentials.
LiFePO4 · ~2.3 h AC; up to 200 W solar · 21 lb
Check price at Goal Zero → Full specs
5
Bluetti EB70Sstep-up
716 Wh 800 W cont · 1,400 W surge ~13 h on this load $$
A rugged 700 Wh workhorse for camping and outage essentials.
LiFePO4 · ~3.5 h AC; up to 200 W solar · 21 lb
Check price at Bluetti → Full specs
6
Bluetti AC70
768 Wh 1,000 W cont · 2,000 W surge ~14 h on this load $$
A 1,000 W inverter and 768 Wh — handles a fridge and most kitchen bursts.
LiFePO4 · ~45 min to 80% AC; up to 500 W solar · 23 lb
Check price at Bluetti → Full specs
🔗 The "Check price" buttons are brand-direct affiliate links. Once our brand affiliate programs are approved these will earn a commission — at no extra cost to you, and it never changes which unit we recommend. Disclosure.
⚡ Duty cycle matters here. The heater is the draw; it pulses, so average watts sit below the peak. We size watt-hours on the duty-weighted average (48 W), not the peak — so we don't oversell you capacity.

Can a specific unit run a cpap with heated humidifier?

34 of the units we track deliver enough watts to run a cpap with heated humidifier. Check a specific one for the runtime and the full verdict:

Goal Zero Yeti 200X
187 Wh · 120 W cont
runs it
Jackery Explorer 240 v2
256 Wh · 300 W cont
runs it
EcoFlow RIVER 2
256 Wh · 300 W cont
runs it
Bluetti EB3A
268 Wh · 600 W cont
runs it
Jackery Explorer 300 Plus
288 Wh · 300 W cont
runs it
Anker SOLIX C300
288 Wh · 300 W cont
runs it
Goal Zero Yeti 500X
505 Wh · 300 W cont
runs it
EcoFlow RIVER 2 Max
512 Wh · 500 W cont
runs it
Jackery Explorer 500
518 Wh · 500 W cont
runs it
Goal Zero Yeti 700
677 Wh · 1,000 W cont
runs it
Bluetti EB70S
716 Wh · 800 W cont
runs it
EcoFlow RIVER 2 Pro
768 Wh · 800 W cont
runs it

Common questions

What size power station do I need to run a cpap with heated humidifier?

A cpap with heated humidifier draws about 60 W running, with a startup surge near 95 W. So you want a unit with at least 60 W continuous output and 95 W+ surge. For 8.0 h of runtime that's roughly 427 Wh of capacity — the Goal Zero Yeti 500X is the smallest unit that clears all of it.

How many watts does a cpap with heated humidifier use?

About 60 W while running, spiking to roughly 95 W on startup. It only draws power about 80% of the time, so over an outage its energy use is well below 60 W × the hours — which is why a modest battery lasts longer than you'd expect. The heater is the draw; it pulses, so average watts sit below the peak.

Sources: CPAP with Heated Humidifier wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); station specs — manufacturer published specifications (compiled 2026-06-15; approximate). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.