SUNMAX 22" Cordless Walk-Behind Floor Scrubber Review

Affiliate disclosure: WC Safety earns a commission on qualifying Amazon purchases at no extra cost to you.

The cordless flagship of our scrubber lineup: 22 inches of path, dual tanks, and up to five hours of battery per the listing — apply, scrub, and recover in one pass with no cord to manage around water. Auto-scrubbers retire the mop on big hard floors, and battery power removes the last cord-in-water argument.

Editorial rating: 4.4/5. The battery scrubber to shortlist first — walk-dry floors at walking speed, no cord discipline required.

Key specs

Listed at $2,499.00 on Amazon when we captured pricing (2026-07-17) — the button shows the live price.

Who it's for

Warehouses, gyms, retail floorplates, and schools with real hard-floor footage — operations where mop-and-bucket labor is the largest line in the floor budget.

Skip it if

Small facilities: a $2,499 machine needs footage to amortize. Under ~15k sq ft of scrubbabe floor, the compact 14" unit or the mop program does the math better.

How it fits the facility safety program

Auto-scrubbers are slip-control machinery: walk-dry floors at walking speed shrink the wet-floor window to the machine's shadow. The wet-process discipline (signs at transitions, GFCI cords, full recovery) still frames every run. New to the department? Start at the janitorial & facility safety collection overview.

How it compares

vs 22" corded scrubber: same path with bigger recovery, corded. (Our take: full 22" corded scrubber review.)

vs 14" compact: the small-format entry at $1,399. (Our take: full 14" compact review.)

Pros and cons

Pros

• Cordless: no GFCI cord management in water
• Dual tanks with 31" recovery squeegee
• Five listed hours covers real shifts

Cons

• Battery is a service item on a schedule
• Import parts ecosystem at name-brand-adjacent money
• Needs footage to justify

Build out the facility program

One machine is a purchase; the program is what protects people. Wet processes run per the floor stripping guide and the chemistry per the cleaning chemical safety guide; the whole hazard-to-product map is the custodial worker safety hub. Decision tools: the dispenser compatibility guide, liner size calculator, and mil & micron decode — plus ranked picks for vacuums, extractors, carts, wet floor signs, and liners. Crews need splash goggles, chemical-resistant gloves, hearing protection, and slip-resistant footwear. Shop the department: janitorial & facility safety, equipment & floor machines, entrance matting, eye wash stations, chemicals & dilution — volume via bulk & business orders.

Related janitorial reviews

• 22" Walk-Behind Floor Scrubber (18.5 Gal Recovery) review
• Compact 14" Walk-Behind Floor Scrubber (Corded) review
• VN1500 Venom 20" High Speed Floor Burnisher review
• Koblenz B-1500-P High Speed Floor Burnisher review
• Ultra High Speed Burnishing Pads 20" (5-Case) review
• XPOWER P-80A Mini Mighty Air Mover (600 CFM) review
• XPOWER P-230AT Mini Mighty Air Mover (925 CFM) review

Janitorial & facility equipment FAQ

Are these prices current?

Every price in this review was captured from the live Amazon listing on 2026-07-17 and is shown for comparison — machines, matting, and safety equipment reprice constantly, so the yellow buttons pull the live listing where current price and stock are shown.

Does WC Safety actually stock this equipment?

We're a workplace-safety retailer and Amazon Associate: we curate, spec-check, and cross-link the products, and purchases happen on Amazon through our links. That model is why every claim traces to the listing or the maker's published data.

Why does a safety site cover janitorial equipment?

Because custodial work is safety work: wet floors, chemical exposure, and ergonomic load each map to an OSHA standard, and the equipment in this wave — scrubbers that leave floors walk-dry, matting that captures water at the door, eyewash where chemicals live — is hazard control wearing work clothes.

How are compliance claims handled?

Per the listing, strictly: stations marketed as OSHA-compliant are described that way with the ANSI Z358.1 context you need to verify fit (flush duration, siting, supplemental-vs-primary class). We add no certifications the maker didn't publish.

What's the wet-process safety discipline for this equipment?

Signs at every approach before water goes down, GFCI-protected cords out of standing liquid, full recovery or forced drying before signs come down, and hearing/eye protection where machines demand it. The custodial safety hub carries the task table.

How does this wave connect to the chemical program?

Directly: scrubbers and burnishers run the floor chemistry, air movers end the wet window it creates, matting keeps the grit off the finish, and eyewash answers the corrosives in the closet. One program, five product families.

What's the maintenance reality on powered floor equipment?

Batteries and pads on schedule, squeegee blades when streaks appear, tanks rinsed after every run, and cords inspected like ladders. Machines fail at their consumables first — stock them with the purchase.

How were these products chosen?

Wave 3 of our janitorial department covers the automation and safety-hardware layer — selected from live Amazon data for review strength, real pricing, and category coverage rather than sponsorship.

Can I order at facility scale?

Yes — multi-unit and standing orders route through our bulk & business orders page alongside the PPE the same crews need.

Where's the rest of the janitorial department?

Paper systems, liners, signs, chemicals, vacuums, and carts live in their own collections — with the dispenser compatibility guide, liner calculator, and mil/micron decode as the decision tools. The janitorial & facility safety department page maps all of it.

What does an auto-scrubber replace?

The mop-bucket cycle on large hard floors: it applies solution, scrubs, and recovers in one pass, leaving floors walk-dry. That last part is the safety feature — the wet-floor window shrinks to the machine's shadow.

Battery or corded scrubber?

Battery removes cord-in-water management entirely and wins on big open floors; corded never runs out mid-shift. At this price tier batteries are service items — budget replacement into year three.

How much floor justifies a scrubber?

Rule of thumb: 15,000+ square feet of scrubbable hard floor scrubbed multiple times weekly. Below that, the compact class or a disciplined mop program carries the duty.

What operator training do scrubbers need?

Squeegee behavior on turns, dump-and-refill routine, battery care, and the transition discipline — the machine dries its own path but drips at stops. An hour of training prevents most streak-and-slip complaints.

Do scrubbers replace wet floor signs?

No — they shrink the signed zone to transitions and refill points. Any wet edge the squeegee misses is still a posted hazard until dry.

How we review

WC Safety reviews are spec-honest: we work from the manufacturer's published data and the live Amazon listing, flag any claim that exists only in listing copy ("per the listing"), and never invent certifications or test results. Ratings are editorial judgments about fit-for-duty at the captured price — not aggregated user scores.

Sources

Manufacturer product pages and the Amazon listing linked above; OSHA 29 CFR 1910.22 (walking-working surfaces), 1910.151 (medical services and first aid), 1910.1200 (hazard communication) as referenced; ANSI/ISEA Z358.1 (emergency eyewash and shower equipment) referenced for classification context, not reproduced.

Reviewed by Steven Eaton, WC Safety — workplace PPE retailer and Amazon Associate. Pricing captured 2026-07-17; click through for current pricing.