whirrwork

Autonomous floor scrubber

Tennant T7AMR

Ride-on-sized robotic scrubber (BrainOS) for large open floors: airports, big retail, arenas; can also be driven by hand.

Made by Tennant Company · Official page

Public buyer record: Savannah Airport Commission (Georgia) bought one T7AMR from W.W. Grainger for USD 60,684 with a 3-year warranty, replacing an end-of-life Windsor scrubber (City Council item approved 2020-10-22, https://agenda.savannahga.gov/publishing/october-22-2020-city-council-regular-meeting/247_5679.html, checked 2026-10-28). Tennant's own case studies (Frederick Health, University of Regensburg) are maker-published and are not counted as evidence.

Whirrwork assessment, not a lab test

Not enough evidence to rate

  • Only 1 independent source found; at least 2 are needed.
  • No independent field trial or test of how well it does the job (certifications cover safety or airspace rules, not performance).

1 independent source found · spec transparency 5 of 8 key specs published. How we rate.

Specs (maker-published)

SpecValueAs published · source
Cleaning width650 mm“Cleaning Path: 26 in / 650mm” tennantco.com
checked Oct 28, 2026
Tank110 L“Solution Tank Capacity: 29 gal / 110 L” tennantco.com
checked Oct 28, 2026
Runtime / flight time240 to 390 min“Estimated Run Time: Up to 4 (Flooded Lead Acid Battery), Up to 6.5 (High Capacity Lithium-Ion Battery)” tennantco.com
checked Oct 28, 2026
Noise70 dBA“Sound Level: As low as 70 dBA” tennantco.com
checked Oct 28, 2026
Weight492 kg“Weight: 1,085 lbs / 492 kg (tanks empty, with batteries) (Tennant T380AMR & T7AMR specification sheet, Rev 3/2022)” tennantco.com
checked Oct 28, 2026

Not published by the maker (or not found yet): Coverage rate, Top speed, Sensors.

Independent evidence

  1. Independently documented deployment Supports the job fit

    Approval to Procure a Tennant Disk Floor Scrubber from W.W. Grainger, Inc. (item 20)
    City of Savannah City Council (Savannah Airport Commission), 2020-10-22

    The airport bought one T7AMR robotic scrubber (USD 60,684, lowest of 3 quotes) to replace a floor scrubber at the end of its life, citing chemical-free cleaning and freeing its environmental services staff.

    A public purchase record: it shows the buyer chose to put the robot into service, not how well it cleaned.

Jobs it can do

From its robot type. Whether it suits your site depends on the specs above and on the job's checklist.

Compare with other autonomous floor scrubbers