★★★★★
Trusted by 100+ homeowners
Get Spotless Streak Free Windows in Diamond Bar (Screens & Frames Always Free)
Click the image to see more of our work
Tired of not being able to see clearly outside? Get professional residential & commercial window cleaning in Diamond Bar, CA with a 7-day rain protection guarantee - all for an affordable price.
Diamond Bar Trusted Window Cleaning Pros
Crystal Clear Windows proudly serves homeowners throughout Diamond Bar, from the view-lot homes in Diamond Bar Hills and Pantera Park to the gated communities of The Country Estates. Diamond Bar's hillside setting means larger windows built to take in the view, along with dust and debris from the open brush hillsides that border much of the city. We handle both — safely reaching high glass and soaring windows, and clearing away the dust and grime that settles between cleanings — so the windows you built your view around actually stay clear.
Everything You Get When You Book in Diamond Bar
Zero hidden fees. No upsells. This is everything — included in every single visit.
✅ Interior & exterior window cleaning
✅ On-time arrival promise
✅ Licensed & insured in California
✅ Same trusting window washers each time
✅ Free screen cleaning — every visit
✅ Steak-free guarantee
✅ No pressure, honest-pricing
✅ 7-day rain protection guarantee
Crystal Clear Windows in 3 Simple Steps
Request a Quote
Fill out our quick form or give us a call. Tell us what you need and where you're located in Diamond Bar — we'll get back to you within 2 hours with a rough quote price.
⬇
Schedule a Time
Pick a day and time that fits your schedule. We work around you — not the other way around. You'll get a confirmation and a reminder so there are no surprises on either end.
⬇
Relax & Sit Back
We show up on time, do the job right, and leave your property exactly how we found it — except with spotless windows. Screens, frames, and a streak-free finish are all included. No upsells at the door, no mess left behind.
→
→
Everything Your Windows - and More.
Every service includes free screen and frame cleaning - no extra charge, no upsells. Just clean glass, on time, the it should be.
Residential Window Cleaning
Get 5-star window cleaning without the hassle. Crystal Clear Window Cleaning delivers spotless, streak-free windows for Southern California homeowners.
Get your free estimate today and see the Crystal Clear difference.
Solar Panel Cleaning, Gutter Cleaning, & Pressure Washing
Get the most from your solar panels and protect your home with Crystal Clear Window Cleaning's extra services in Southern California.
Solar Panel Cleaning — Dirt can cut output up to 25%. We remove dust and buildup to restore performance.
Gutter Cleaning — Clogged gutters cause water damage. We clear leaves and debris so water flows away from your home.
Pressure Washing — We blast dirt and grime from driveways, sidewalks, fences, and patios to refresh your property's look.
Get your free estimate today and see the Crystal Clear difference.
Commercial Window Cleaning
Professional commercial window washing for Southern California businesses. Crystal Clear uses industry-grade window washing tools to keep your storefront spotless and inviting. Every service includes screens and frames at no extra charge, and our team works around your schedule to minimize disruption to your business.
Get your FREE quote today!
Make a lasting impression with professional commercial window cleaning from Crystal Clear Window Cleaning. We keep storefronts, office buildings, and commercial properties across Southern California looking sharp and professional year-round.
Every service includes screens and frames at no extra charge, and our team works around your schedule to minimize disruption to your business. Licensed, insured, and backed by a streak-free guarantee, we proudly serve cities such as Chino, Chino Hills, Corona, Diamond Bar, Eastvale, Jurupa Valley, Ontario, Riverside and surrounding Inland Empire and SoCal communities.
Contact us today for a free estimate and keep your business looking its best.
Get the most from your solar panels and protect your home with Crystal Clear Window Cleaning's extra services in Southern California.
Solar Panel Cleaning — Dirt can cut output up to 25%. We remove dust and buildup to restore performance.
Gutter Cleaning — Clogged gutters cause water damage. We clear leaves and debris so water flows away from your home.
Pressure Washing — We blast dirt and grime from driveways, sidewalks, fences, and patios to refresh your property's look.
Get your free estimate today and see the Crystal Clear difference.
Crystal Clear Window Cleaning delivers spotless, streak-free windows for homeowners across Southern California. Every service includes screens and frames at no extra charge — no hidden costs, just beautifully clean windows inside and out.
We are licensed, insured, and backed by a streak-free guarantee, we proudly serve cities such as Chino, Chino Hills, Corona, Diamond Bar, Eastvale, Jurupa Valley, Ontario, Riverside and surrounding Inland Empire and SoCal communities.
Get your free estimate today and see the Crystal Clear difference.
Why Diamond Bar Homeowners and Businesses Chose Us
Built for Diamond Bar's View Homes
Many Diamond Bar homes were built with big windows and high ceilings to frame the views of Mt. Baldy and the San Gabriel Valley. That kind of glass takes the right equipment to reach and clean safely. We come prepared for it, every time.
Hillside Dust, Handled
Diamond Bar backs up to open brush hillsides, which means more dust and debris landing on windows than in flatter cities nearby. It settles into tracks and screens fast. We clean all of it, not just the glass, so windows stay clear longer.
We Remove Hard Water Spots
That cloudy white film on your glass? That's hard water mineral buildup on your home. This stuff is extremely common in the Inland Empire. Most cleaners leave it or don't have the equipment to treat it. We treat and remove it, so your windows are actually clear, not just wiped.
Local Owner, Not a Franchise
When you book Crystal Clear Window Cleaning, you're not getting a rotating crew from a call center. You're getting a local Chino-area owner who shows up personally, knows your neighborhood, and has a reputation to protect on every job.
Any window cleaner can wipe glass. What sets us apart is understanding exactly what Diamond Bar homes deal with, and we come prepared to fix it every time.
Try SoCal’s Trusted Window Cleaners
We Guarantee 100% Satisfaction on all Window Cleaning services
Client Reviews
"We have a lot of glass in the back of the house facing the hills and it hadn't been touched since we moved in. They got up to the higher windows without an issue and the view is actually clear now instead of hazy. Wish I'd done this sooner."
— Joe B."Live off Grand Ave and the dust from the hillside gets on everything, windows included. Scheduling was easy, they came when they said they would, and didn't try to upsell me on stuff I didn't need."
— Randy W."Had some water spots on the front windows from the sprinklers that really bugged me. They explained upfront it might not come off 100% but they'd do what they could — ended up looking way better than I expected.”
— Elida ZCommon Questions of Diamond Bar Homeowners
-
Twice a year for most homes and quarterly for businesses. If you're near the hillside brush areas, quarterly keeps dust and buildup from getting ahead of you.
-
Yes, every single time — no exceptions, no fine print. Most window cleaning companies charge extra for screens and frames. We include them on every job because that's just the right way to clean windows.
-
Most residential homes in Diamond Bar take between 1.5 and 3 hours depending on the number of windows and stories. We'll give you a clear time estimate when you get your free quote so you can plan accordingly.
-
Yes! We also offer solar panel cleaning, pressure washing, and gutter cleaning. If you book a window washing service with us and want to add any of these services on, you will receive a discounted rate and complete it same day as the window cleaning service.
-
Yes. Crystal Clear Window Cleaning is fully licensed and insured in California. You're covered — your home, your property, and your peace of mind.
-
Yes, for no additional price we’ll try our best to get hard water stains off your windows using traditional tools. If the hard water is really calcified onto the glass, we’ll negotiate a price to remove it.
Serve Areas in near Diamond Bar
Crystal Clear Window Cleaning serves homeowners and businesses across the Inland Empire — from Chino and Chino Hills to Corona, Ontario, Riverside, Eastvale, and everywhere in between. Every job includes free screen and frame cleaning, honest pricing, and a streak-free guarantee. No franchises, no rotating crews — just a local business who shows up on time and does it right.
READY TO GET CRYSTAL CLEAR WINDOWS IN DIAMOND BAR, CA?
Trusted by 100+ homeowners
★★★★★