Reliable Steamboy PRO 300CU Steam Mop

Our Expert Rating:

The Reliable PRO 300CU portable steam mop uses dry steam for effectively cleaning grout, carpets, wood, tile and vinyl floors. Fast delivery and 30-day no hassle return policy. See Reliable PRO steam mop reviews and comparisons.

Reliable Steamboy PRO 300CU Steam Mop

Includes: 2 washable, microfiber pads, carpet glide attachment and 1 replaceable water filter.

AVAILABILITY: In Stock. Ships Within 2 - 3 Business Days.

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Cleaning your floors and grout with the Reliable Steamboy PRO 300CU (formerly named the PRO T3) steam mop will save you time and money. This steam cleaner requires just seconds to heat up and offers up to 25 minutes of cleaning time per fill. The Steamboy PRO 300CU is designed to effectively clean hard surfaces, grout and carpet without the use of harsh chemicals. A microfiber floor pad gently cleans dirt and grime off hard surfaces while an ingenious integrated bristle head is used to scrub tile floors and grout lines. Use the included carpet glide tray to remove carpet stains and freshen up worn, high traffic areas. Features include an 11-inch cleaning path, a swivel head for maneuverability, integrated heavy-duty tile and carpet scrubber and the carpet glide attachment. 1-year manufacturer's warranty.

  • Cleans tile, vinyl and hardwood floors
  • Removes carpet stains and freshens up worn areas
  • Integrated scrubbing brush for grout cleaning
  • Includes:
    • 2 washable microfiber cleaning pads
    • Carpet glide for cleaning and deodorizing soft carpets
    • 1 replaceable water filter
  • Steam ready time is immediate
  • 180° swivel head
  • 11' cleaning path
  • 21' electrical cord with wrap around feature
  • Easy to fill water tank
  • Ergonomically designed handle
  • Replaceable water filter to protect against scale
  • Power on indicator light
1. Steam Quality - Temperature & Dryness
2. Tank Capacity & Length of Cleaning Time Per Tankfull
3. Quality and Absorption of Pads
4. Heat Up Time
5. Weight & Maneuverability
6. Length of Power Cord
7. Overall Machine Construction
8. Manufacturer's Credibility Including Return Policy & Warranty
9. Value for the Price

The Reliable Steamboy PRO 300CU steam mop is designed to clean hardwood, tile, ceramic and vinyl floors with high temperature steam. In addition to removing spills and dirt from the floors, the powerful steam vapor will clean grout as well as remove carpet stains.


  • Well-built, sturdy construction designed to last many years.
  • Integrated bristle head cleans grout and stubborn stains.
  • Microfiber cleaning pads Velcro securely to the cleaning head.
  • Carpet glide attachment is easy to put on and remove.
  • Immediate steam generation allows you to begin cleaning right away.
  • Comfortable, well balanced design of this appliance makes it fun and easy to use.
  • Removable water tank is easy to fill and requires no down time when cleaning large areas.
  • Replaceable water filter is good for those with mineral rich water and will extend the mop's lifespan.


  • We would like to see Reliable offer a Steamboy with a larger cleaning head.


Reliable has designed and manufactured many steam mops over the years and the Steamboy PRO 300CU is a direct result of their years of experience. This steam mop is well designed but not over designed. Our testers really appreciate its simplicity of operation and the fantastic cleaning results it provides. While we would like to see a larger cleaning head on a future Steamboy, we realize that some maneuverability will be lost and trust the designers at Reliable know what their customers want. While using this steam mop on hard surfaces we quickly noted that it appears to leave less moisture on the floor. The integrated bristle brush was quite effective for scrubbing stains and did help with grout cleaning. This feat is notable as we have previously never been able to satisfactorily clean grout with a standard steam mop. Lastly, the PRO 300CU is comfortable and easy to use with no testers reporting arm or wrist fatigue from operation.

Reliable Steamboy PRO 300CU Steam Mop


Reliable Steamboy PRO 300CU Steam Mop

Technical Specifications of Reliable Steamboy PRO 300CU Steam Mop

  Reliable Steamboy PRO 300CU Steam Mop
Steam cleaner accessories included
Steam cleaner accessories included 2 washable microfiber cleaning pads, carpet glide attachment and 1 replaceable water filter.
Steam Temperature
Steam Temperature 248°F
Tank Capacity
Tank Capacity 2.4 cups
Heat Up Time
Heat Up Time Immediate
Operating Time
Operating Time Up to 25 minutes
Power Cord Length
Power Cord Length 21 ft.
Power Requirement
Power Requirement 1500W, 13 amps, 110V/120V
Dimensions 10.5"D x 12"W x 50"H
Weight 7 lbs.
Warranty 1 year

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