Compact Scrubber Sizing for Stores Up to 800 Square Meters

What store size does a compact scrubber suit?

A compact scrubber dryer is built for the small end of commercial floor care. Pudu Robotics launched its PUDU ET1 on August 12, 2026, as the first model in its E Series, aimed at spaces of 100 to 800 square meters, including convenience stores, drugstores, chain restaurants, hotels and offices, according to the company's press release.

Floor area alone does not settle the choice. A 600 square meter pharmacy with narrow gondola aisles can be a harder fit than a 750 square meter store with open sightlines. The narrowest opening on the route and the number of times the floor needs cleaning each week carry as much weight as the square footage.

How do aisles, doorways and shelf gaps set the minimum?

Start with the narrowest point, not the average aisle. Pudu lists a minimum clearance of 50 cm width and 60 cm height for the ET1, which covers shelf gaps and low fixtures. That is a vendor figure, so verify it against your own gaps with a tape measure before ordering anything.

Leave room on both sides. Lvtong, a scrubber vendor, suggests that a 50 cm body in a 0.8 meter aisle leaves about 15 cm on each side. Door frames and swinging doors also consume 5 to 10 cm of nominal width, so a 90 cm opening may behave more like 80 cm in practice. Above roughly 1.2 meters of aisle width, turning radius at the ends of aisles becomes the limit rather than width.

• Narrowest clear aisle, measured between racking caps and endcaps, not the shelf face
• Doorway clear width after the frame and the swing of the door are subtracted
• Height under low fixtures, overhead signage and shelf lips
• Turn space at aisle ends and in the stockroom, where the machine must reverse

Does floor type change which compact scrubber works?

Floor type decides the cleaning head more than the body size does. The ET1 lists a scrub and dust mop width of 30 cm and a sweep and vacuum width of 39 cm, per a vendor spec sheet. Its reseller notes that carpet gets vacuuming only, so a carpeted pharmacy front end needs a different plan from its hard floor aisles.

Compact machines trade cleaning width for maneuverability. US Cleaning Tools notes that compact floor scrubbers give up cleaning path width, roughly 14 to 17 inches against 20 to 28 inches on larger machines, to fit tighter spaces. On a sealed concrete stockroom that trade may be worth making. On a large open tile sales floor, it can add passes you did not plan for.

How do cleaning frequency and tank size change the math?

Rated output is the number that turns frequency into hours. The ET1 is rated at 300 to 720 square meters per hour by its vendor. At 800 square meters, that works out to roughly 1.1 to 2.7 hours of cleaning per pass. Rated output is a best case, so a real store will take longer, especially with stock, displays and wet corners.

Tank size sets the pace of refills. The ET1 carries 8 liters of clean water and 7.2 liters of wastewater, with a 2.5 liter dust box. Its reseller warns that the 8 liter tank means more trips to the dock on very dirty sites. Run time is listed at 2.5 to 4 hours, and the vendor says the unit can run during business hours. Test that claim on your own floor before relying on it.

A daily mopping schedule of a few short cycles suits a compact unit. A site that needs a full pass after every delivery, or one with heavy tracked-in grit, should plan for a larger machine or a shorter route per cycle.

When does a larger machine make more sense?

Retailers' buying guides point to a clear pattern. Cleaning Equipment Direct and Ecogardenhouse both suggest 14 inch and 17 inch walk behind scrubbers for aisles, 13 to 15 inch models for displays and back rooms, and 22 inch machines for open sales floors. Those are guides aimed at retail buyers, and the exact fit depends on your layout.

Above the ET1 range, the picture shifts. The reseller recommends Pudu's CC1 above 800 square meters or on open floor plates, though that is its own opinion. Lvtong suggests rider scrubbers for facilities above about 20,000 square feet, which covers many large format stores and distribution rooms.

Is the ET1 available for US stores yet?

Not on a confirmed basis. The FCC added foreign produced advanced robotic devices to its Covered List effective July 28, 2026, and new models need conditional approval before they can be authorized. Models authorized before that date may keep receiving software and firmware updates at least until January 1, 2029.

TechTimes reported that the ET1 requires an FCC waiver before US sale and that no waiver had been announced when it published. An Irish reseller lists availability as late 2026. Confirm authorization status before you plan a store around this model, and build the sizing work so it still applies to any compact unit that clears the same test.

How Service Robot Co. approaches the site survey

Service Robot Co. is an OEM neutral integrator for US businesses. We pick the robot that fits the floor from across manufacturers, then finance, deploy, integrate, train and service every unit through a nationwide US engineer network. For a store or pharmacy, the survey covers the measurements above, the floor finish, the cleaning schedule and the dock water supply before any model is named.

We lease robots only, on a three year lease with one fixed payment quoted after site assessment. That keeps the sizing conversation honest: if the narrowest door says a compact unit will not fit, we say so and look at the next option.