We have all been there: You spill a latte in the car or watch a pet make a mess on the stairs, and the thought of dragging out an extension cord to clean it up is almost worse than the stain itself. Cords are clumsy, restrictive, and annoying.

The Hoover ONEPWR CleanSlate Cordless (Model BH14000V) promises to solve this problem entirely. By ditching the plug and using Hoover’s interchangeable ONEPWR battery system, it offers true grab-and-go freedom. But does cutting the cord mean cutting the cleaning power?

We analyzed its suction strength, battery runtime, and performance against heavyweights like the Bissell Little Green and Shark StainStriker. If you want to know if going cordless is worth the price, this review has the answers.

1. What is the Hoover ONEPWR CleanSlate?

The Hoover ONEPWR CleanSlate is a portable carpet and upholstery cleaner that runs on a removable, rechargeable lithium-ion battery. It is part of the ONEPWR ecosystem, meaning the battery works with over 15 other Hoover products (like cordless vacuums and blowers).

Designed for portability, it eliminates the tether of a power cord, making it uniquely suited for cleaning cars parked in driveways, carpeted stairs, and remote messes where finding an outlet is a hassle. It features a “Boost Mode” for extra suction and specialized tools for tight crevices.

2. Key Features Breakdown

Cordless Freedom (ONEPWR Battery)

The biggest selling point is the battery. You get about 15 to 20 minutes of runtime on a full charge. While this sounds short compared to endless corded power, it is usually enough time to clean an entire car interior or handle 3-4 significant household spills. The battery is swappable, so if you own other ONEPWR tools, you can extend your cleaning time instantly.

Boost Mode

For tougher, set-in stains, the CleanSlate features a “Boost Mode” button. This ramps up the suction power by 25% and increases the brush roll speed (if using a motorized tool) to extract deep-seated dirt and liquid. It drains the battery faster but is essential for old pet stains.

Versatile Tool Kit

The unit comes with:

• Tight Spot Tool: Perfect for crevices in sofas and between car seats.
• Wide Path Tool: Covers more ground for general carpet cleaning.
• Hose Rinse Tool: Flushes the machine out after use to prevent odors.

3. Performance Test: Car & Home

The Ultimate Car Detailer

This is where the Hoover CleanSlate shines brightest. If you live in an apartment complex or have a driveway far from an outlet, corded cleaners like the Bissell Little Green Mini are unusable without 50 feet of extension cords. The Hoover lets you open the car door and start cleaning immediately. The suction is strong enough to pull mud and coffee out of floor mats, leaving them damp but not soaked.

Pet Messes

We tested it on muddy paw prints and spilled wine. In standard mode, it handles fresh spills easily. For older stains, you need to use the Oxy solution and Boost Mode. The suction is impressive for a battery-operated unit, rivaling some corded models, though it doesn’t quite match the raw power of the Shark StainStriker.

4. Hoover Cordless vs. Corded Rivals

How does going cordless affect performance compared to the market leaders?

• Vs. Bissell Little Green Pet Deluxe: The Bissell has unlimited runtime (corded) and slightly larger tanks, making it better for big home jobs. The Hoover wins on convenience and ease of setup.
• Vs. Shark StainStriker: The Shark has stronger suction and dual-chemical cleaning, making it better for severe stains, but it is tethered by a cord. The Hoover is better for quick maintenance.

Verdict: Choose Hoover for convenience and cars. Choose Bissell or Shark for power and whole-room tasks.

5. Technical Specifications

6. Pros & Cons

7. Buyer’s Guide: Who Needs This?

The Hoover ONEPWR CleanSlate is the perfect choice for:

• Apartment Dwellers: Who need to clean their car in a parking lot without power access.
• RV and Boat Owners: Where portability is king.
• Parents with Stairs: No tripping over cords while trying to clean juice spills on the steps.

If you need a machine for regular, heavy-duty carpet cleaning indoors, stick to a corded upright. But for “spot ops,” this is the tactical gear you want.

8. Frequently Asked Questions

How long does the battery last?

With the included 4.0 Ah battery, you can expect between 15 to 25 minutes of runtime, depending on whether you use standard or “Boost” mode continuously.

Can I use Bissell formula in this?

Technically yes, but manufacturers always recommend using their own branded solution (Hoover Paws & Claws or Oxy) to prevent foaming issues and protect your warranty.

Does it heat the water?

No, like most portable cleaners, it uses the temperature of the water you put in. Fill it with hot tap water for the best cleaning results.

Is it heavy?

At under 10 lbs, it is comparable to the Bissell Little Green. The ergonomic handle makes it easy to carry to the car or up and down stairs.