Every check passes: 1,740 W running against 2,400 W continuous, and 1,740 W at start-up inside a 4,800 W ceiling. What this page will not do is turn a nameplate watt-hour rating into hours — see the evidence below for why.
official · verified 2026-08-01 · EU 230 V unit × mini-split heat pump
Nominal capacity2,048 Wh
Surge headroom2.8×
Two numbers decide this, and readers arrive using them interchangeably. Watts are the ceiling on what the inverter can hold at any instant — a mini-split heat pump needs 1,740 W of them while it runs, and 1,740 W for the instant it starts. Watt-hours are how much energy the battery holds, and the EcoFlow DELTA 2 Max holds 2,048 Wh of them on the nameplate. A machine can have plenty of one and not enough of the other.
The verdict above is a calculation — running watts, start-up inrush and inverter waveform against this machine's continuous output and surge ceiling — not a lookup. What it will not do is print a runtime, and the reason is specific: EcoFlow publishes no depth of discharge or inverter efficiency for this model, so there is no usable-capacity figure to divide.
Where those numbers come from
Every figure below carries the tier it came from and the date it was checked. A blank is never
left blank: a field the manufacturer does not publish says so, and a field whose sources
disagree — two documents, or one document with itself — says that instead of picking one.
No usable-capacity figure for this machine
EcoFlow publishes a nameplate watt-hour number and nothing about depth of discharge or inverter efficiency for this model. Dividing the nameplate by this load would be wrong by 20–35% in the flattering direction, so this page shows the nameplate for what it is and refuses to turn it into hours.
Missing: station.usable_capacity_wh
Energy rate instead of a runtime
560 Wh per houraveraged over this load’s duty cycle
This number needs no battery figure at all, which is why this page can give it when it cannot give hours. Divide any usable-capacity figure you trust by it and you have your own runtime, with our arithmetic visible instead of hidden.
What a mini-split heat pump demands
Running power560 W Official spec · verified 2026-08-01 · high confidence
Start-up demand1,702 W Official spec · verified 2026-08-01 · high confidence
The engine checked 1,740 W — where a record publishes both an absolute inrush and a multiple of running power, the more demanding of the two is used rather than the flattering one.
Duty cycle100% Official spec · verified 2026-08-01 · medium confidence
Power factor0.90 Official spec · verified 2026-08-01 · high confidence
The inverter is loaded to 1,933 VA — 1,740 W ÷ 0.90 — which is the quantity its ceiling is actually measured against. Those are not the watts in the row above: this load modulates, so the verdict is taken at the top of the range its record publishes rather than at the rated point.
The start-up figure is the manufacturer’s own locked-rotor rating, off a spec sheet for a real model in this class — not a category multiple. Where a standards table and the nameplate disagree, this library uses the nameplate: the standards figure is a selection envelope for breakers and controllers, and sizing a battery to it over-specifies the machine by two to four times.
What the EcoFlow DELTA 2 Max offers
Continuous output2,400 W Official spec · verified 2026-08-01 · high confidence
Surge ceiling4,800 W Official spec · verified 2026-08-01 · high confidence
Nominal capacity2,048 Wh Official spec · verified 2026-08-01 · high confidence
Inverter waveformPure sine wave Official spec · verified 2026-08-01 · high confidence
What changes the answer
Each row below is the same calculation with one input changed, run again — not the
verdict above adjusted by hand. The headline verdict is the machine and the load as they
come, because that is what a reader who has not bought an accessory needs first.
At 8.3 °C ambientTight fit
This is a published anchor point, not a curve: the correction is ×1.1 at 8.3 °C, and this site does not interpolate between anchors because a line drawn through two points is a number we invented. The weather changes the answer here, which is exactly the case a label-wattage table cannot see.
Will an EcoFlow DELTA 2 Max run a mini-split heat pump?
Yes. 1,740 W of running draw against 2,400 W of continuous output — 73% of it, with 1,740 W demanded at start-up against a 4,800 W ceiling. The verdict is computed from running watts, start-up inrush and inverter waveform — the working is in the evidence section above.
How long will an EcoFlow DELTA 2 Max run a mini-split heat pump?
We will not put a number on it, and that is a finding rather than a gap. EcoFlow publishes no depth of discharge and no inverter efficiency for this model — only a nameplate watt-hour rating. Dividing that nameplate by this load produces a figure that is typically 20–35% too high while looking exactly as authoritative as a real one. What this page gives instead is the load's energy rate in watt-hours per hour, which needs no battery figure at all.
Does the weather change whether an EcoFlow DELTA 2 Max runs a mini-split heat pump?
This is a published anchor point, not a curve: the correction is ×1.1 at 8.3 °C, and this site does not interpolate between anchors because a line drawn through two points is a number we invented. The weather changes the answer here, which is exactly the case a label-wattage table cannot see. Under that condition the verdict is “Tight fit”. Both runs are on this page because a conclusion that depends on a condition is only honest when the condition is named.
Why is there no runtime on a page that says yes?
Because "yes it runs it" and "yes for this long" are two different claims with two different evidence requirements, and this machine only supports the first. The verdict needs a continuous rating and a surge ceiling, which EcoFlow publishes. Hours need a usable-capacity figure, which it does not. Twenty of the twenty-six machines in our library are in that position, and the alternative — nameplate watt-hours divided by label watts — is the single most common wrong number on this topic.