How a Hospital Held 99% Floor-Hygiene Audits With a 3-Robot Fleet
A composite case study: pairing autonomous scrubbers with a disinfection pass in a hospital, the coverage map that fixed the gaps, and a 21-month payback.
By WhichBot Team
Illustrative scenario.This case study is a composite built from real industry benchmarks and our Fleet & ROI engine, not a specific named customer. Figures are representative, not a guarantee.
In a hospital, a clean floor isn't presentation — it's infection control. A regional hospital wanted consistent, audited hygiene across its wards and corridors without adding night labour it couldn't hire. We ran the numbers through the Fleet & ROI Planner and built the plan around three PUDU CC1 autonomous scrubbers plus a nightly disinfection pass.
The brief
The hospital runs 24/7, so there is no "closed" cleaning window — only quieter hours. Two things had to be true: the machine must be safe and unobtrusive around people and beds, and coverage had to be provable for infection-control audits, not just "we mopped it."
- ~9,000 m² of cleanable sealed vinyl and terrazzo (theatres stay a specialist manual job)
- Corridors, wards, waiting areas, and imaging — mixed traffic all night
- Hygiene auditors sample floors monthly; the score drives accreditation
- No appetite for a machine that needs a human walking beside it
Where coverage actually leaked
Manual cleaning didn't fail on the main corridors — it failed at the edges and the back-of-house, exactly where a rushed 3 a.m. round cuts corners. Mapping the building by zone made the gaps obvious:
Red, dashed zones fell below 70% under manual rounds. A fixed robot route plus a centrally-placed dock closed the back-of-house gap without extending the shift.
The autonomous route doesn't get tired or skip the pathology wing at the end of a long night — which is precisely where audits used to ding the score.
The shortlist
Prices are indicative Australian retail, ex-GST. At ~9,000 m² across tight ward doorways, the deciding factors were doorway width, unobtrusive operation and cost per unit.
| Model | Real coverage | Noise | Indicative price |
|---|---|---|---|
| PUDU CC1 | ~490 m²/h | ~70 dB | ~A$30,100 |
| PUDU CC1 Pro | ~650 m²/h | ~70 dB | ~A$32,800 |
| Gausium Phantas | ~350–700 m²/h | ~60 dB (quieter) | ~A$44,600 |
The CC1 won on doorway width and cost per unit — three of them cover the wards and corridors within quiet hours with a mid-shift charge. Where a hospital prioritises the lowest possible noise, the quieter Gausium Phantas is the trade-up, at a higher price per unit.
The money
Three CC1 units plus mapping and a fill/charge station came to ~A$96,000 upfront, displacing the bulk of two nightly cleaning roles for a net ~A$4,500/ month — before you count the value of not failing an audit.
Break-even at ~21.3 months on a $96,000 upfront outlay saving $4,500/month.
The payback model captures labour. It doesn't capture the real prize: a hygiene score that stopped swinging month to month. In a hospital, consistency is the product — and a robot that runs the same route at 3 a.m. every night is how you get it.
Would it work for your site?
- Size your own fleet with the Fleet & ROI Planner.
- Or tell us about your facility for a vendor-neutral shortlist with indicative pricing.
Frequently asked questions
- How many cleaning robots does a hospital wing need?
- In this composite scenario, three PUDU CC1 autonomous scrubbers covered ~9,000 m² of cleanable corridors, wards and common areas each night within quiet hours. Theatres stayed a specialist manual job.
- Are autonomous floor scrubbers safe to run around patients and beds?
- Yes. The PUDU CC1 runs at about 70 dB with obstacle avoidance and people-detection, and at low overnight speed it cleans wards and corridors without a human beside it. Where near-silence matters most, the Gausium Phantas is quieter at ~60 dB.
- What is the payback period for cleaning robots in a hospital?
- Around 21 months in this scenario: roughly A$96,000 upfront for three units plus mapping and a fill/charge station, against about A$4,500 a month in displaced night labour — before counting the value of a floor-hygiene score that stops swinging.
- Do cleaning robots replace hospital cleaning staff?
- No — they shift labour rather than remove it. One supervisor oversaw all three robots, handling flagged spills and exceptions instead of pushing a scrubber, while audited floor-hygiene scores rose from 94% to 99.4%.
Put these numbers to work
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