Can I afford it?

I never thought we could afford a floor scrubbing robot. The honest math said: only if it runs more

October 1, 2026 · 4 min read

Autonomous scrubbers make headlines in airports that run them eight hours a day. A 150,000 square foot warehouse that scrubs once a night is a different arithmetic. Here is the worked example, including the part where the base case does not pencil and what changes it.

The short answer

In the example below, replacing three driver hours a night with a robot that still needs half an hour of human attention saves about 18,000 dollars a year in labor. Against a machine and software plan priced as illustrative placeholders, that is a payback of six to nine years depending on the plan, which is too long. The same robot cleaning the floor twice as often, or a second building, or an eight hour duty cycle, brings it to two years or less. The lesson is that the robot pays back on hours run, and a once-a-night building does not give it enough.

The building, as a composite example

This is a worked example with made-up but realistic inputs, not a client story and not a quote. Every figure on this site is an illustrative planning range subject to engineering verification. Put your own numbers in the same slots and the arithmetic is yours. Steel Collar is an independent dealer for one maker in this category, Avidbots, and the price placeholders below are not that maker's pricing or anyone's; the team quotes real figures after a site review.

Picture a 150,000 square foot distribution warehouse with open concrete floors, forklift traffic by day, and a two person night crew. One of them spends about three hours a night on a ride-on scrubber, five nights a week. The operations manager has seen robot scrubbers at a trade show and assumes they are for airports.

The inputs we used

Driver hours: 3 a night, 5 nights, 50 weeks, 750 hours a year at a loaded 28 dollars an hour, 21,000 dollars. Hours still needed: half an hour a night to start the robot, empty and fill it, and hit the spots it flags, 125 hours a year, 3,500 dollars. Net labor saved: 17,500 dollars a year. Machine: a placeholder of 60,000 dollars installed, used only to show the shape of the arithmetic. Software plan: every machine in this category runs on an annual plan; placeholder 8,000 dollars a year. Service: placeholder 3,000 dollars a year.

How the arithmetic played out

Base case: 17,500 dollars saved less 11,000 dollars of plan and service leaves 6,500 dollars a year against a 60,000 dollar machine. Nine years. Even with a plan at half that placeholder, the payback is over five years. On labor alone, this building does not justify the robot, and the concierge would say so.

Now change the hours. Suppose the warehouse should be scrubbed twice a night because of forklift traffic and dust, but the crew only has time for once. The robot runs six hours a night at no extra labor, and the second pass is new coverage the crew could never deliver. If management values that second pass at what it would have cost in driver hours, another 21,000 dollars a year, the annual benefit rises to 38,500 less 11,000, or 27,500 dollars, and the payback drops to about 2.2 years. Add a second building on the same plan and it drops further. The airport in this site's casebook assumed eight hours of running a day in its own payback estimate, which is exactly this effect at scale.

What moves the answer most

Hours the robot runs per day, by a wide margin. Then the software plan, which is a recurring cost the brochure rarely leads with. Then the share of the night crew's time the robot really frees. Machine price is fourth, which surprises people.

What would have killed it

Narrow aisles and back rooms that eat runtime in turns. No overnight window. A cleaning contract where the contractor owns the equipment decision. And fewer square feet of open hard floor than it takes to use up a machine's nightly runtime.

Run your own numbers

Measure the open hard floor, count driver hours a week, and decide honestly how often the floor should be cleaned versus how often it is. Describe the building to Joe, the concierge on this site. It will size the machine class against your square footage, include the software plan in the frame, and say plainly when a walk-behind is still the right answer.

Related on this site

• Autonomous floor scrubbing at retail scale
• Which floor scrubbing robot fits which building
• Overnight floor scrubbing wasn't automatable until a machine could map the building
• Avidbots, a Steel Collar dealer line
• Robots for warehousing and 3PL