If you’ve shopped around for window cleaning services, you may have noticed that some companies advertise purified water window cleaning. It sounds technical, but the concept is simple — and the results speak for themselves. Here’s what the process actually is, how it works, and why it produces a better finish than traditional methods.
What Is Purified Water Window Cleaning?
It’s a professional method that uses water stripped of all minerals, sediment, and impurities. Regular tap water — even from municipal supplies — contains dissolved minerals like calcium, magnesium, and chlorine. When that water dries on glass, those minerals stay behind as spots, streaks, and a hazy film. Purified water has none of that, so it dries completely clear.
How the Process Works
The process starts by running ordinary tap water through a multi-stage filtration system — typically including carbon filters, a reverse osmosis membrane, and a deionizing resin. This removes virtually 100% of dissolved solids. The water is then pumped through a long telescoping pole with a soft brush head at the top, allowing professionals to scrub and rinse glass up to three stories high while standing safely on the ground.
Because the water is mineral-free, it actively pulls dirt off the glass and rinses it away as it runs down. No squeegee, no wiping, no streaks — the windows dry naturally to a spotless finish.
Key Benefits of This Cleaning Method
- Spotless, streak-free finish — Glass dries crystal clear with no mineral residue.
- No harsh chemicals — Safe for plants, pets, kids, and the environment around your home.
- Reaches high windows safely — Long poles eliminate the need for ladders on most homes.
- Cleans frames and sills — The brush scrubs window frames clean along with the glass.
- Longer-lasting results — With no soap residue, glass stays cleaner longer between visits.
Purified Water vs Traditional Squeegee Cleaning
Traditional squeegee cleaning still has its place, especially for interior windows or detailed touch-ups. But for exterior glass — particularly on second and third stories — the pole-based system is faster, safer, and produces a better finish. It also avoids the drips, spotting, and re-streaking that can happen with soap-based methods on warm or sunny days.
Is It Worth the Switch?
For most Chicago-area homeowners, yes. The Chicago region has notably hard water, which means tap water leaves behind significant mineral residue when it evaporates on glass — exactly the streaking and spotting that purified water window cleaning is designed to eliminate. Combined with the safety benefits of ground-based pole cleaning, it’s the modern standard for professional exterior service.
Get Purified Water Window Cleaning from Ernest Windows
Ernest Windows uses these systems across the Chicago area, delivering spotless results without ladders or harsh chemicals. Whether you have a single-story ranch or a three-story home, we have the right equipment for the job.
We serve Deerfield, Northbrook, Glenview, Buffalo Grove, Arlington Heights, and the surrounding Chicago area — seven days a week with no extra charge for weekends. Contact us today for a free estimate.
