Tennant CS5 and CT5 Floor Scrubbers: 7 Questions From a Quality Inspector

Some decisions look easy on a spec sheet and completely different when you're standing in front of a machine that's about to go out to a customer. I'm a quality compliance manager for an industrial equipment distributor. I review every floor scrubber we sell—roughly 200 units a year, maybe 180, I'd have to check our log. In 2024, I rejected 4% of first deliveries because of battery problems, squeegee misalignment, and missing labels. If you're looking at a Tennant CS5 or CT5 floor scrubber, or just trying to choose a floor scrubber for warehouse duty, these are the questions I get asked every week.

Here's what we'll cover:

• Which Tennant floor scrubber is right for a warehouse?
• What should I check before buying a used Tennant CS5 floor scrubber?
• Is the CT5 floor scrubber worth the extra cost?
• What does “energy-saving floor scrubber” actually mean?
• How do I use the Tennant App for preventive maintenance?
• Why does a brand-new scrubber leave streaks?
• What one practice cuts downtime the most?

Which Tennant floor scrubber is right for a warehouse?

The short answer: it depends on aisle width, shift length, and what's on the floor. The Tennant CS5 floor scrubber is a compact option that works well in tight warehouses and mixed-use facilities. The CT5 floor scrubber is a solid choice when you want a no-nonsense unit with simple controls and predictable maintenance. But I've watched facilities buy a wider machine because it measured faster, then end up leaving streaks because the recovery system wasn't matched to the brush deck. Take 5 minutes to measure dock doors, racking clearance, and floor slope before you buy.

For a multi-shift operation, battery runtime matters more than top speed. A machine rated for four hours won't finish an eight-hour shift without a battery swap. And if OSHA's Walking-Working Surfaces standard (29 CFR 1910.22) matters to you—and it should—a clean, dry floor is part of compliance. In my experience, the right floor scrubber for warehouse use is the one that fits the floor, not the one with the biggest scrub width.

What should I check before buying a used Tennant CS5 floor scrubber?

Batteries first. From the outside, a used CS5 can look glossy and clean. The reality is that battery health is the single most expensive component you're inheriting. If the machine has telematics, pull the battery condition report from the Tennant App and look at charge cycles and depth of discharge. If it doesn't, load-test the batteries and check the charging log. Then check the squeegee: if one side is worn more than the other, the blade angle is off. Lift the brush deck and look for cracks; a damaged deck can cost more than the batteries.

I've rejected units that looked great in photos but had a rotted hose behind the recovery tank. That's the surface illusion: cosmetics hide hydraulics, wiring, and battery health. Ask for service records. No records? Assume the maintenance was skipped—and price that into the offer. Also confirm the charger matches the machine. We've seen a wrong-spec charger overheat a battery pack and warp the tray.

Is the CT5 floor scrubber worth the extra cost?

Honestly, “worth it” depends on your crew. The CT5 floor scrubber is the rugged, simpler option for facilities that don't want to troubleshoot electronics. The CS5 gives you battery mobility and better integration with connected maintenance tools like the Tennant App. In our Q1 2024 audit of service tickets, CT5 units had lower average repair cost per hour than CS5 units. But the CS5 had lower cleaning cost per square foot in large, open warehouses.

The surprise isn't the purchase price; it's the total cost over three years. Replacement parts, operator training, downtime, and charger costs can outweigh the difference between models. I recommend a 30-day trial or a side-by-side demo before you commit. Spec sheets don't tell you how easy the recovery tank is to empty at 6 a.m. (which, honestly, matters more than you'd think).

What does “energy-saving floor scrubber” actually mean?

It's not just a label on the motor. A true energy-saving floor scrubber lowers the total energy used per square foot cleaned. That includes charger efficiency, vacuum motor draw, and whether the brush deck removes soil in one pass. As of January 2025, many Tennant battery machines include eco charging modes that reduce peak demand and can extend battery life.

But I tell every warehouse manager to focus on water recovery, too. If the machine can't recover dirty water in one pass, you'll re-clean the same floor, use more chemistry, and burn more energy. The biggest savings come from doing it right the first time. Check the published watts and amps on the spec sheet, but don't stop there. Ask what happens when the floor has oil or dust. That's where the real energy cost is.

5 minutes of verification beats 5 days of correction.

How do I use the Tennant App for preventive maintenance?

The Tennant App is an early warning system, not a magic fix. For connected models—including CS5 units with the telematics package—you can check battery state of charge, fault codes, and service reminders from your phone. The key is to use it on a schedule. I've seen warehouses install the app, check it once, and then ignore the alerts. That's the surface illusion—the app can't prevent a failure if nobody opens it.

Make the dashboard part of Monday's pre-shift routine. Check the battery report, glance at fault codes, and put worn brushes on the parts order before they cause a patchy clean. (Should mention: the app depends on Wi-Fi coverage. If your charger area is a dead zone, expect stale updates.) In our fleet, customers who used the app weekly had 31% fewer unscheduled service calls in their second year. That's prevention, not prediction.

Why does a brand-new scrubber leave streaks?

Streaks are almost always a setup problem, not a machine fault. Check the squeegee first. If the blade is new but still streaks, look at the angle and down pressure. Hold a flashlight behind the blade; if light leaks through, the blade isn't sitting flat on the floor. Next, check the floor itself. Oil or old finish can break down water tension, making the scrubber look like it isn't cleaning. Third, look at brush wear. A brush worn on one side leaves a repeating pattern. Finally, check the vacuum hose. A partially clogged hose kills recovery and creates waviness.

In our service log, about 60% of streak complaints come from a dirty or misaligned squeegee—not from the scrubber model. The surprise is that the cheapest component causes the most expensive-looking failure. Add squeegee inspection to the pre-shift checklist.

What one practice cuts downtime the most?

A written pre- and post-shift checklist. I know it sounds boring, but I've seen a $38,000 floor scrubber sit idle because nobody emptied the recovery tank or checked the charger cable. The checklist isn't about treating operators like they don't know the job. It's about catching cheap problems before they become expensive ones. For any floor scrubber for warehouse work, I'd check five things: battery charge and water level, squeegee alignment, brush wear, recovery tank condition, and charger connection.

Our fleet customers that adopted this approach reduced unscheduled service calls by about 31% in the second year. We didn't buy more expensive machines. We just stopped repeat failures. And post-shift, drain and rinse the recovery tank. I can't tell you how many odor complaints disappear when operators do that every night. Check it now, or pay for it later.