CoolingAlso called: mini split, ductless mini split, mini split heat pump
Two numbers decide whether a power station runs a mini-split heat pump, and readers arrive using them interchangeably. Watts are the ceiling on what the inverter can hold at any instant — this load needs 560 W of them while it runs, and 1,702 W for the moment it starts. Watt-hours are how much energy the battery holds. A machine can have plenty of one and not enough of the other.
Of the 26 station records we publish — every model we hold a page for, with its US and EU versions counted separately — 5 run it, 1 are a tight fit and 20 are out of reach. Each of those is a calculation against that machine’s continuous output, its surge ceiling and its inverter waveform — not a lookup table — and the reasoning is on every row.
The three numbers a power station is judged against
Running power560–1,740 W Official spec · verified 2026-08-01 · high confidence
This machine has no single running wattage — the band is its own, not a spread across models. Every verdict below is computed at the top of it, 560 W.
Start-up surge1,702 Wengine checks 1,702 W Official spec · verified 2026-08-01 · high confidence
Duty cycle100% Official spec · verified 2026-08-01 · medium confidence
This band is one machine turning itself up and down, not a spread across models, so there is no “which unit do I own” to resolve here. Where it sits moves with the conditions the machine is working in, which is why the runtimes below come out as intervals rather than as one number.
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.
This record publishes both an absolute inrush and a multiple of running power. They do not agree exactly, so the engine checks against the more demanding of the two — 1,702 W — rather than picking the flattering one.
Official spec · verified 2026-08-10 · appliance record
What actually decides it
A variable-speed motor: it ramps instead of slamming
This compressor is fed by its own electronics, which start it gently and then modulate its speed to the work in front of it. The start-up peak is small or absent, and the running draw is a band rather than a point — low most of the time, climbing only under load. The binding constraint is usually the top of that band, not the start.
What kind of motor is inside
The motor is brushless and driven by its own inverter board, which is why the start-up demand is modest: the electronics ramp the motor rather than connecting it straight to the line.
Watts are not what the inverter is holding
At a power factor of 0.90 this load presents 1,933 VA to the inverter. An inverter is sold in watts and limited in volt-amps, so a machine that looks comfortable on the watt figure can be at its ceiling on the VA one. The engine checks both.
It does not have one running wattage
This machine does not have one running wattage: the record carries a low, a rated and a high point off the same nameplate. The runtime below is worked out from that curve rather than from a duty cycle, so it comes out as an interval. A single number would be a choice we made on your behalf about which setting, or which conditions, you are running it in.
Which power stations run it
Every row is a live calculation against that machine's continuous output, surge ceiling and
inverter waveform. Of the 26 station
records we publish — US and EU versions counted separately — 5 run it, 1 are a tight fit and 20 are out of reach. The percentage is
this load as a share of that machine's continuous output; anything past 82% drops out of the green. Rows are ordered by verdict, then by
price — cheapest first inside each band.
EcoFlow DELTA Pro 3EcoFlow · US 120 V4,000 W continuous · 8,000 W surge ceilingRuns it44%
560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 4 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $2,799 · checked 2026-08-17 Show the working →
EcoFlow DELTA 2 MaxEcoFlow · EU 230 V2,400 W continuous · 4,800 W surge ceilingRuns it73%
560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €949 · checked 2026-08-17 Show the working →
1.0–3.1 h — on a full charge, with the station’s own 13 W idle draw in the denominatorWe have found no published surge rating for the EU 230 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €1,149 · checked 2026-08-17 Show the working →
560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €1,799 · checked 2026-08-17 Show the working →
EcoFlow DELTA Pro 3EcoFlow · EU 230 V4,000 W continuous · 8,000 W surge ceilingRuns it44%
560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €3,299 · checked 2026-08-17 Show the working →
limited by continuous output 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €999 · checked 2026-08-17 Show the working →
limited by mains standardWe have found no published surge rating for the US 120 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $239 · checked 2026-08-17 Show the working →
EcoFlow RIVER 3 PlusEcoFlow · US 120 V600 W continuous · 1,200 W surge ceilingWrong mains
limited by mains standard 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 4 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $279 · checked 2026-08-17 Show the working →
EcoFlow DELTA 3 PlusEcoFlow · US 120 V1,800 W continuous · 3,600 W surge ceilingWrong mains
limited by mains standard 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 3 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $719 · checked 2026-08-17 Show the working →
limited by mains standardWe have found no published surge rating for the US 120 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $899 · checked 2026-08-17 Show the working →
EcoFlow DELTA 2 MaxEcoFlow · US 120 V2,400 W continuous · 4,800 W surge ceilingWrong mains
limited by mains standard 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 5 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $1,049 · checked 2026-08-17 Show the working →
limited by mains standard 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 3 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide.We have found no published surge rating for the US 120 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $1,279 · checked 2026-08-17 Show the working →
limited by continuous outputWe have found no published surge rating for the EU 230 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €219 · checked 2026-08-17 Show the working →
Anker SOLIX C300Anker SOLIX · EU 230 V300 W continuous · 600 W surge ceilingToo big580%
limited by continuous output 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €269.99 · checked 2026-08-01 · 17 days ago Show the working →
limited by continuous output 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €279 · checked 2026-08-17 Show the working →
EcoFlow RIVER 3 PlusEcoFlow · EU 230 V600 W continuous · 1,200 W surge ceilingToo big290%
limited by continuous output 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €299 · checked 2026-08-01 · 17 days ago Show the working →
limited by continuous output 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €519 · checked 2026-08-17 Show the working →
BLUETTI Elite 100 V2BLUETTI · EU 230 V1,800 W continuousToo big107% of assumed VA ceiling
limited by VA ceilingWe have found no published surge rating for the EU 230 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €579 · checked 2026-08-17 Show the working →
limited by continuous output 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU build, so there is no defensible usable-capacity figure to divide.We have found no published surge rating for the EU build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €599 · checked 2026-08-17 Show the working →
EcoFlow DELTA 3 PlusEcoFlow · EU 230 V1,800 W continuous · 3,600 W surge ceilingToo big107% of assumed VA ceiling
limited by VA ceiling 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €849 · checked 2026-08-17 Show the working →
limited by continuous output 560 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU build, so there is no defensible usable-capacity figure to divide.We have found no published surge rating for the EU build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €999 · checked 2026-08-01 · 17 days ago Show the working →
The cheapest US 120 V machine in the list that runs a mini-split heat pump outright, and it holds it at 560 Wh per hour.
$2,799 · price checked 2026-08-17
The buy link is in the bar at the bottom of the screen — one action per page, and it
goes to the merchant we last checked the price at.
What changes the numbers
At 8.3 °C ambient×1.1Applied to the draw itself, which means the verdict can move with the weather. Official spec
At -8.3 °C ambient×1Applied to the draw itself, which means the verdict can move with the weather. Official spec
At 35 °C ambient×1Applied to the draw itself, which means the verdict can move with the weather. Official spec
Between the anchorsOnly the anchor points above have a source. This site does not interpolate between them: a curve drawn through two published points is a number we invented, and it would arrive on the page wearing the same official label as the points it was drawn from.
Mains standards on recordUS 230 V · EU 230 VThe figures above are recorded per mains standard, because the same appliance class is built differently on 120 V and 230 V. Where only one standard is on record, the ranking still lists machines from both regions — each row states its own.
Everything else we hold on this load
Each figure carries the tier it came from and the date it was checked. Sizing guidance is
kept apart from measured draw on purpose: one says what the machine pulls, the other says
what a manufacturer or a standard thinks you should buy for it.
Measured and published draw
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 figure its ceiling is actually measured against. Those are not the rated watts above: this load modulates, so it is checked at the top of the range its record publishes.
Sizing guidance — not a draw figure
Minimum continuous output1,740 W Official spec · verified 2026-08-01 · high confidence
A sizing figure, not a draw: it is what this class needs a machine to be RATED at, headroom included.
Minimum surge capability1,702 W Official spec · verified 2026-08-01 · high confidence
The start-up headroom this class needs an inverter to have. Where it comes from a manufacturer’s inverter recommendation rather than a measured inrush, it is deliberately generous.
560–1,740 W while it is running, with 1,702 W demanded at the instant it starts. Those are different questions and most pages answer only the first. The running figure decides whether a machine can hold it; the start-up figure decides whether it can get it going at all, and it is usually the one that fails. The start-up figure here is the manufacturer’s own..
What size power station do I need for a mini-split heat pump?
For a mini-split heat pump, the EcoFlow DELTA Pro 3 (US 120 V) is the cheapest machine in our library that runs it, at 4,000 W continuous · 8,000 W surge ceiling and $2,799 against a running draw of 560–1,740 W and a start-up demand of 1,702 W. That is a verdict computed from this load’s running watts, its start-up demand and the inverter waveform — not a rule of thumb about doubling the wattage. 5 of 26 machines clear it, 1 is a tight fit, and the tight one is tight for reasons the list states individually.
How long will a power station run a mini-split heat pump?
It depends entirely on the machine, which is the part most pages skip. Against a mini-split heat pump at 560–1,740 W of running draw, our figures put the BLUETTI Elite 200 V2 at about 1.0–3.1 h. Those hours come from usable-capacity figures derived from each manufacturer’s own published depth of discharge and inverter efficiency, with each machine’s idle draw in the denominator — not from dividing a nameplate watt-hour number by a label wattage. Most machines in the list carry no hours at all: we hold nothing for those builds that makes a usable-capacity figure defensible, so those rows give an energy rate instead of a number we would have had to invent.
Why does a mini-split heat pump need so much more power to start?
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. The engine works the check against 1,702 W, which is what a station's surge ceiling has to cover for the moment the machine starts. A station whose continuous rating is comfortably above the running figure can still refuse the start, and that is the single most common way a purchase goes wrong for this class.
Which power stations run a mini-split heat pump?
5 of the 26 we hold, listed above cheapest-first within each verdict band, starting with the EcoFlow DELTA Pro 3. 1 more is a tight fit on a mini-split heat pump — they run it, but with less headroom than we are willing to call comfortable — and 20 cannot. Every one of those is a live calculation against that machine's own record, and opening a row shows the working.
5 of 26 machines run itEcoFlow DELTA Pro 3 · from $2,799