What size power station for a boiler circulator pump?
It needs a station with at least 44 W of continuous output (starting watts not published, so the check uses running watts). At the default 85% efficiency it takes about 414 Wh of rated capacity for 8 hours of running, and 1,242 Wh for 24 hours of running. 54 of the 54 power stations in the Enough Watts data set can power it. The smallest one that keeps it going for 24 hours of running is the Jackery Explorer 1000 Plus (1,265 Wh).
Updated
The short answer
44W
Continuous output
Not published
Surge to start it
414Wh
Capacity for 8 hours of running
1,242Wh
Capacity for 24 hours of running
54 of 54
Stations that power it
Wattsestimate
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
- 44 W
- Running, low to high
- 44 Wone published figure
- Starting
- Not publishedmotors often need 2 to 3 times their running watts to start
- Typical use a day
- 12 hhours the motor actually runs
- Average draw while on
- 44 W
- Voltage
- 120 V
- Assumes the motor runs the whole time; real use is often less.
- Starting watts not published; motors often need 2 to 3 times their running watts to start.
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.
- Output44 W running, so the station's continuous output must be at least 44 W.
- SurgeStarting watts are not published, so the surge check uses the 44 W running figure.
- Average draw44 W: the running watts count for every hour it is on, as if the motor never paused.
- A typical day44 W × 12 h = 528 Wh a day.
- 8 hours of running44 W × 8 h = 352 Wh usable, ÷ 0.85 = 414 Wh of rated capacity.
- 24 hours of running44 W × 24 h = 1,056 Wh usable, ÷ 0.85 = 1,242 Wh of rated capacity.
- On the Jackery Explorer 1000 Plus1,265 Wh × 0.85 = 1,075 Wh usable, ÷ 44 W = 24.4 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
44 W is the maximum operating power of current high efficiency circulators; no lower or typical figure is published, so all three values are the same. Older fixed speed circulators draw more, but no official figure for them could be confirmed.
A gas boiler's own controls and fan need power as well, so count the boiler separately. The 12 hours a day here is our planning default for a winter day.
Questions
How many watts does a boiler circulator pump use?
Can a portable power station run a boiler circulator pump?
How long will a power station run a boiler circulator pump?
Does a boiler circulator pump need extra watts to start?
Sources
Researched from these pages, then checked against them a second time.
- 007e ECM High-Efficiency Circulator - Taco Comfort Solutions maker product page, checked
- 0015e3 ECM High-Efficiency Circulator - Taco Comfort Solutions 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.