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Robot Vacuum Running Costs: Bags, Pads, Parts, and Power

How to estimate a year of robot-vacuum costs — bags, filters, pads, brushes, and electricity — with official care intervals and EIA power prices, not an invented annual total.

By Squadron Robot editors Published Updated

How to read this guide. We will not publish a fake “average yearly cost” for all robot vacuums. Care intervals differ by model and by how dirty the house is. Electricity rates differ by state. List prices change. The method below uses official replacement windows and a published US average electricity price so you can plug in your robot and your utility bill.

The box price is not the cost of ownership. A self-emptying combo can be inexpensive to run or surprisingly spendy depending on bags, pads, and whether you can still buy the exact filter that dock needs. The goal of this article is a 12-month worksheet you can actually fill in, plus a warning about orphan parts — bags, pads, and docks that disappear from a catalog before the robot dies.

For the work itself, use the maintenance calendar. This page is about what that work costs.

The four cost buckets

Over a year, almost all of the money sits in four places:

  1. Consumable dirt-handling: dock bags, or the time and filters that come with a bagless canister or a bin you empty yourself.
  2. Air path and brushes: filters, main brushes or extractors, side brushes, caster wheels.
  3. Mopping, if you mop: pads, and sometimes official cleaner for a dock that doses detergent.
  4. Electricity: charging, dock emptying, and, on wash-dry docks, pad washing and drying.

Repair parts (a new battery, a new drive wheel, a new dock) are real, but they are not a regular 12-month line item unless something has already failed. Do not budget a failed battery as if it were a filter. Do keep a little margin.

Use the official interval, then count the packs

iRobot’s care charts are a useful worked example because they publish both cleaning and replacement windows, and those windows are not the same for every Roomba family.

On several older and mid-line charts, including the j Series, filters are cleaned weekly (twice a week with pets) and replaced every two months; main brushes or extractors are replaced every 6–12 months; a front caster may be replaced every 12 months; and an edge or corner brush may be on a 3-month or 3–6-month window depending on the series (j Series care chart; general Roomba care chart; s Series care chart). On the Roomba 100/1000 chart, some of those windows are longer — filters every three to six months, mopping pads on Combo models every 3–6 months (Roomba 100/1000 care).

Dreame’s L10s Pro Gen 2 manual, as another official example, lists mop-pad care after each use and a replacement period of every 1 to 3 months, with several other parts on two-week or monthly care (L10s Pro Gen 2 User Manual). The L10s Ultra Gen 2 manual puts the dust box filter on a two-week cleaning interval and lists further replacement windows that depend on the part and on usage (L10s Ultra Gen 2 User Manual).

A 12-month filter count is therefore not “two packs for every robot.” It is: your chart’s replacement window, divided into 12 months, rounded up, then multiplied by the official pack size you can still buy. If the chart says “every two months,” you need six filters a year — more if you have pets and the filter looks gray at five weeks. If it says “every three to six months,” start at the short end in a shed-heavy house and the long end in a tidy, hard-floor apartment.

Dock bags work the same way, except the official instruction is often “when the LED or app says so,” not a fixed calendar date (Clean Base care; Roomba 100/1000 care). Manufacturer “weeks of dirt” claims on a bag or canister are claims, not a measurement from this site; see who should buy a self-emptying robot vacuum. Track how often your bag fills for the first two months, then multiply. Do not budget a year off the box language.

Look up official parts by series, not by “this looks close.” iRobot’s support site explains how to buy series-specific accessories in the app’s iRobot Store (in-app parts), and the official web catalog still lists items such as a 3-pack of replacement dirt-disposal bags (official bag 3-pack). We are not reprinting a list price here because it will go stale; use the live product page on the day you shop, and write that date on your worksheet.

Electricity: a method, not a made-up kWh figure

We have not metered a dock for a year, and we will not pretend a typical robot uses “X kilowatt-hours.” You can still bound the cost with two official inputs: the power listed on the dock or robot nameplate, and your electricity rate.

For a national yardstick, the U.S. Energy Information Administration’s Electric Power Monthly Table 5.6.A reports average retail prices of electricity by end-use sector and state. For August 2026, the U.S. total residential average was 18.16 cents per kilowatt-hour (a preliminary 2026 figure; the August 2025 U.S. total residential average in the same table, marked final, was 17.57 cents) (EIA Table 5.6.A). Your state row in that table may be much higher or lower than the US total. The rate on your utility bill is better than either if you have it.

Then be conservative about hours. A dock may draw a higher wattage while it empties or dries pads, and a much lower wattage while the robot sits idle. iRobot’s i6 owner’s guide notes that the robot uses a small amount of power whenever it is on the charging station, and that the app offers a reduced-power standby mode (Roomba i6 Owner’s Guide). If the nameplate says, for example, 40 watts, 40 watts for one hour is 0.04 kWh. At 18.16 cents per kWh, that hour would cost less than a cent. The point of the example is the arithmetic, not a claim that your dock is a 40-watt device or that it runs at nameplate power all day. Use the label, use your bill, and if you want a tighter number, a plug-in energy meter is more honest than a blog total.

For most households, electricity will be the small line compared with bags and pads. It is still worth knowing, and it is a reason not to park a drying dock on an unnecessary high-power cycle if the app lets you choose a shorter dry.

Orphan docks, odd pad sizes, and other traps

Consumables are only cheap when they are still for sale. Before you commit to a brand or a discounted last-year flagship, check all of the following on the official site:

  • Bags or a washable dock canister, with a current SKU.
  • Filters that list your exact model.
  • Pads in the shape your mop plate uses. A millimeter of difference is not “close enough.”
  • Main brushes and side brushes.
  • Any official detergent if the dock’s manual requires it. Dreame’s L10s Ultra Gen 2 manual, for example, warns to use only the officially approved cleaning fluid in the auto-detergent compartment (L10s Ultra Gen 2 User Manual).

If any of those are already missing from the official store, treat the discount on the robot as a possible parts problem, not a deal. A robot that shares a bag or pad with a current family is easier to keep than a one-off dock. That is one reason our brand line map starts with catalogs and manuals, not with bargain listings.

Third-party bags and filters exist. Some fit; some leak; some void a warranty. We have not tested them. If you use them, you are accepting that risk to save money. Official parts are the conservative line on a worksheet.

A one-year worksheet

Copy this, fill the blanks, and add only the lines that apply.

  • Official bags this year (count from your first two months × 6, or from the app history): ______ packs × $______ = $______
  • Filters (12 ÷ official months per filter, rounded up): ______ × $______ = $______
  • Main brush / extractors (0, 1, or 2 per the 6–12 month window): $______
  • Side or edge brush: $______
  • Caster or other listed wear part: $______
  • Mop pads (if you mop): ______ × $______ = $______
  • Official detergent (if the dock requires it): $______
  • Electricity (estimated kWh × your rate, or the EIA state average if you must): $______
  • 12-month total: $______

If that total is close to a significant fraction of a new midrange robot, you are not “doing it wrong.” You may have a high-hair household, a pad-washing dock, or official parts that are simply expensive. You may also want to revisit whether a self-emptying dock or a combo versus a separate mop is the right hardware, because the dock you buy is the cost profile you keep.

The honest number is the one on this worksheet, dated, with links to the official SKUs you used. Anything tidier than that is a guess we will not make for you.

Sources

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Budget, Midrange, and Flagship Robot Vacuums: What the Extra Money Buys

A feature-by-feature look at what typically changes as robot vacuums move from budget to midrange to flagship — docks, mopping, navigation, and parts — without a fake value ranking.

Robot Vacuums & Mops · Updated November 10, 2026

Roborock vs. Dreame vs. Ecovacs vs. Eufy vs. Shark: How the 2026 Lines Differ

A 2026 line map of five major robot-vacuum brands — how their catalogs are organized, and what to compare — labeled as a catalog overview, not a lab test.

Robot Vacuums & Mops · Updated November 10, 2026