What does a central vacuum system cost to run?

Run the numbers on your own use

Change any of these and the figures update. The defaults are the typical case described above; your rate is the input that moves the answer most.

Why this is lower than the number you will see elsewhere

Almost every published answer to this question multiplies the rating on the label by the hours the appliance is switched on. For a central vacuum system that gives 60 kWh a year, or $11.

Full draw while the motor runs, which is only while you are actually vacuuming.

The arithmetic, step by step

Nothing here is hidden, so you can check it or change it. Working in the order the formula runs:

1. 1,500 W — what it draws while it is actually drawing. This is the rating on the plate.
2. × 100% — the share of its in-service time it is really pulling that. Full draw while the motor runs, which is only while you are actually vacuuming.
   That gives 1500 W averaged across the hours it is on.
3. × 0.4 hours a day × 100 days — About twenty-five minutes, twice a week.
   1500 × 0.4 × 100 ÷ 1,000 = 60 kWh a year.
4. + standby — 2 W for the other 23.6 hours a day, which is 4.7 kWh a year. People leave this out and it is not always small.
5. × 18.34¢ — the US average residential rate for June 2026.
   65 kWh × 18.34¢ = $12 a year.

Change any assumption in the calculator above and every figure on this page moves with it. The two that matter most are your rate, which varies 4× across the country, and the hours — the duty cycle is a property of the appliance, but the hours are a property of you.

How sensitive is that number?

A single figure invites more confidence than it deserves. Here is the same appliance under assumptions either side of the default, so you can see how much of the answer is the appliance and how much is the guess about how you use it.

Everything else held at the default. The spread here is the honest error bar on the headline figure.

What it costs per hour, day and month

At 18.34¢ per kWh, the US residential average for June 2026.

The thing worth knowing

Higher wattage than a portable vacuum and a similar annual cost, because the run time is what matters and that is set by the size of your floors rather than the machine. The real difference is that the motor is in the garage, so the noise and the exhaust dust go somewhere else — that is the feature, not efficiency.

Against vacuum cleaner

Nothing meaningful. Included so a whole-house total reconciles. In numbers: a central vacuum system costs $12 a year on these assumptions, and vacuum cleaner doing a comparable job costs $4.95 — a difference of $6.92 a year, or $69 over ten years at today’s rate.

Both at 18.34¢/kWh, each on its own standard usage assumption. Ten years is roughly the service life of either.

What it costs in your state

The appliance is the same everywhere; the rate is not. Running this central vacuum system costs $34 a year in Hawaii and $8.48 in Nevada — a difference of 4×.

Cost of running one central vacuum system for a year, by state. Residential average price, EIA June 2026.

Other tools, hobbies and outdoors costs

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• Pottery kiln

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  A medium studio kiln fired roughly twice a month to cone 6.

• Electric fireplace

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• Home server or NAS

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• Radon mitigation fan

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  A typical sub-slab depressurisation fan running as installed.

Questions

Source: U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A, June 2026. U.S. Government work, public domain.

How every figure on this page is computed · Where the data comes from