What Do Professional Window Cleaners Use? | The Pro Kit Explained

The choice depends on the job. Traditional kits handle storefronts and interiors, while water-fed poles clean elevated exterior glass from the ground. Knowing how each system works explains what pros carry in their trucks and why.

The Traditional Window Cleaning Kit

For most commercial work, professionals rely on time-tested hand tools. These include squeegees, scrubber sleeves, T-bars, and telescoping poles. Unger, a leading US supplier, groups these under its “Traditional Cleaning” category, which is designed for outdoor window care and maintenance.

A basic pro kit centers on two main tools. The scrubber, sometimes called a washer, applies the cleaning solution. The squeegee then pulls it off, leaving glass dry. Most pros pair a 12-inch squeegee with a 14-inch scrubber for large panes, or use smaller sizes for tight frames.

• Squeegees: Brass, stainless steel, plastic, and aluminum versions exist for different tasks.
• Scrubber/T-bar: Holds a wash sleeve and connects to a pole.
• Microfiber sleeves: For scrubbing and detailing edges.
• Extension poles: Lets pros reach second-story windows from the ground.
• Detail blades: Removes stubborn debris and paint overspray.

Retail kits bundle these essentials. One popular offering is the Total Pro Kit, which includes a 14-inch scrubber, a 12-inch squeegee, and a 6-foot telescoping pole—enough to start most jobs. Kits like this are positioned for professional window cleaning, meaning they are built for daily use rather than occasional household chores.

What Is a Water-Fed Pole System?

For elevated glass, many pros switch to a water-fed brush. These systems use a telescopic pole that pumps purified water through the brush head to clean high surfaces from the ground. The brush scrubs the glass while the pure water rinses it, and the surface is simply left to dry without needing a squeegee.

Water-fed systems are ground-based tools designed for higher windows and hard-to-reach surfaces. They are common in the UK and increasingly found in the US.

The purification process is central to the method. Water passes through reverse osmosis (RO), deionization (DI), or a combined system to remove dissolved minerals. The target output is near 0 ppm total dissolved solids (TDS). Any mineral residue left behind causes spotting, so the purification is non-negotiable for this technique to work.

Pros also match the brush jet to the glass. Fan jets are used for hydrophobic glass, while pencil jets work better on hydrophilic glass—the type that wets out evenly.

Choosing Tools by Surface and Job

Not all window-cleaning tools work the same way. Some products are strictly for traditional hand cleaning, while others are made for the pure-water system. Buying a scrubber sleeve when you need a water-fed brush head is a common mix-up.

Spilled water also creates a slip hazard, even with ladder-free systems. Runoff water can pool on floors and walkways, so pros plan for drainage and warn clients about wet surfaces during and after the job.

If you’re deciding which tools fit your own work, weighing commercial-grade options may help narrow the list. Our roundup of recommended commercial window cleaners compares proven gear for steady use. The table below distills the key differences.

Common Mistakes to Avoid

Using tap water in a water-fed system. Dissolved minerals cause spotting. The system exists because purified water doesn’t leave residue—mineral-heavy water defeats the purpose.

Assuming one tool fits all. A scrubber sleeve and a water-fed brush head serve different methods. Check the tool’s category before buying to ensure it belongs to the system you use.

Ignoring surface conditions. Hydrophobic glass repels water and needs fan jets; hydrophilic glass needs pencil jets. Using the wrong jet pattern means streaks and wasted time.

Skipping slip precautions. Runoff water creates wet surfaces. Work with a drying plan and warn nearby foot traffic.