What size power station for an air compressor (small portable, pancake or trim)?
It needs a station with at least 1,000 W of continuous output and a surge rating of at least 2,000 W to start it. At the default 85% efficiency it takes about 1,176 Wh of rated capacity for its typical 1 h a day, and 9,412 Wh for 8 hours of running. 43 of the 54 power stations in the Enough Watts data set can power it. The smallest one that keeps it going for 8 hours of running is the EcoFlow DELTA Pro Ultra X (12,288 Wh).
Updated
The short answer
1,000W
Continuous output
2,000W
Surge to start it
1,176Wh
Capacity for its typical 1 h a day
9,412Wh
Capacity for 8 hours of running
43 of 54
Stations that power it
Watts
Typical figures for this type, from the sources at the foot of this page. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
- Running, typical
- 1,000 W
- Running, low to high
- 840 W to 1,500 W
- Starting
- 2,000 W1,680 W to 4,500 W, 2 times running
- Typical use a day
- 1 hhours the motor actually runs
- Average draw while on
- 1,000 W
- Voltage
- 120 V
- Assumes the motor runs the whole time; real use is often less.
Explained in: Watts vs watt hours, explained, How to read an appliance label for watts and Starting watts explained.
The math
Worked with the typical figure, as the calculator does it.
- Output1,000 W running, so the station's continuous output must be at least 1,000 W.
- Surge2,000 W to start, so its surge rating must be at least 2,000 W.
- Average draw1,000 W: the running watts count for every hour it is on, as if the motor never paused.
- A typical day1,000 W × 1 h = 1,000 Wh a day.
- Typical 1 h a day1,000 W × 1 h = 1,000 Wh usable, ÷ 0.85 = 1,176 Wh of rated capacity.
- 8 hours of running1,000 W × 8 h = 8,000 Wh usable, ÷ 0.85 = 9,412 Wh of rated capacity.
- On the EcoFlow DELTA Pro Ultra X12,288 Wh × 0.85 = 10,445 Wh usable, ÷ 1,000 W = 10.4 h.
Stations that run it
Every power station in the data with this appliance alone plugged in, at 85% efficiency. Type the running watts from your own label and the table works it out again.
What moves the number
A small compressor works hardest when its motor starts against a full tank. Models in our sources run from 840 W to 1,500 W, and the start of 2,000 W assumes about twice the running watts, the rule a generator maker publishes for this kind of motor.
The pump runs only until the tank is full, so the full hour counted here is the high side.
Questions
How many watts does an air compressor (small portable, pancake or trim) use?
Can a portable power station run an air compressor (small portable, pancake or trim)?
How long will a power station run an air compressor (small portable, pancake or trim)?
Why does an air compressor (small portable, pancake or trim) need a high surge rating?
Sources
Researched from these pages, then checked against them a second time. The check corrected at least one figure.
- Generator Wattage Worksheet (Generac) generator maker guide, checked
- Generator Wattage Chart - Champion Power Equipment generator maker guide, checked
- DEWALT 200 PSI Quiet Trim Compressor (DWFP55130) maker product page, checked
- 6 Gallon 150 PSI Portable Corded Air Compressor | CRAFTSMAN maker product page, checked
- Makita USA - Product Details - MAC210Q maker product page, checked
- Makita USA - Product Details - MAC320Q maker product page, checked
We read published figures and do the math; we do not measure appliances. The methodology states every formula on this page. Capacities are rated watt hours: 1,000 Wh rated gives 850 Wh usable at the default.