Clean windows in the Flathead Valley
"Work Done Well, Work Done Right."
Insured. Locally owned. 5.0 stars on Google.
5.0 on GoogleStar rated
InsuredGeneral liability
Locally ownedOperated by Barrett Teeney
Same-day quotesMost replies under 1 hour
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Answer a few quick questions for an instant price range — then book a time right here.
Prefer to talk? Call (406) 607-2151 or text us.
Why OCS LLC
Hand-cleaned, every pane
Squeegee & scrubber for the luxury feel. Water-fed pole only when ladders aren't safe.
Eco-friendly, pet & plant safe
Biodegradable detergents. Safe around dogs, kids, and prized gardens.
48-hour guarantee
Streak-free promise. Anything off within 48 hours, we come back and fix it.
On the glass
See the difference, up close
Real clips from real Flathead Valley jobs — interior, exterior, screens & tracks.
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Streak-free, every pane.
Interior and exterior glass, frames, and tracks — cleaned by hand and done right the first time.
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Screens & tracks, detailed.
Screens cleaned on request, sills and tracks wiped down so grime doesn’t show when the morning sun comes through.
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Crystal-clear views, every season.
From sunny great rooms to snowy mountain mornings — real work across the Flathead Valley.
See our work
What customers say
★★★★★
"Barrett did a fantastic job on our windows and reasonably priced. We will for sure being hiring him again! 👍"
- Stacie Sanders
★★★★★
"Barrett did a fantastic job! He is super professional and my windows are SPOTLESS!!!!!"
- Noah Thiel
★★★★★
"OCS LLC came this morning to clean my windows. He was very personable, on time, kept me updated on what was happening. Plus did a very thorough and…"
- Geri Josephsen
★★★★★
"Did a great job! Easy to communicate with, very impressed with the work done."
- Josh Steffen
★★★★★
"What a treat!!! It’s funny how it just feels a little brighter when the window and screens are clean! Don’t hesitate, book your service ASAP!!!"
- Angela Fleshman
★★★★★
"The poor birds!!!!! They keep flying into my windows now!!!! Barrett worked so hard to get all my windows clean...they hadn't been cleaned in years…"
- Jill Teeney
Window cleaning in Kalispell & the Flathead Valley
Interior and exterior glass, screens, and tracks — cleaned by hand and finished streak-free. Locally owned and insured, serving Kalispell, Whitefish, Columbia Falls, Bigfork, and the wider valley.
Interior & exterior glass
Inside and outside of every pane, hand-cleaned with a squeegee and scrubber. We use a water-fed pole only where ladders aren't safe, so even high second-story glass comes out clear.
Screens cleaned
Screens trap pollen, dust, and valley wildfire smoke. We clean them on request so they stop dulling your view and don't redeposit grime on freshly cleaned glass.
Tracks & sills detailed
We wipe the frames and detail the tracks and sills, clearing out the dirt and dead bugs that collect there — the finishing touch most cleaners skip.
Hard water & build-up
Sprinkler overspray and mineral staining are common on Flathead Valley windows. We inspect for hard water staining and treat it so the glass actually looks clean, not just wet.
Window cleaning FAQ
How much does window cleaning cost in Kalispell?
Most homes land between $150 and $400 depending on size, number of panes, and whether you add interior cleaning, screens, or tracks. There is a $150 service minimum. You see your personalized price range as soon as you pick a booking time — no waiting on a callback.
Do you clean both interior and exterior windows?
Yes. You can choose interior + exterior (inside and outside glass, plus frames and tracks wiped) or exterior-only. Screens and tracks can be added to either option.
Do you clean window screens and tracks?
Yes. Screens are cleaned on request, and window tracks and sills are detailed so you don't see grime when the morning sun comes through the glass.
What areas do you serve?
Kalispell, Whitefish, Columbia Falls, Bigfork, Lakeside, and the wider Flathead Valley. Travel anywhere in the valley is free — there is no trip surcharge.
Is OCS LLC insured?
Yes. OCS LLC carries general liability insurance and is locally owned and operated by Barrett Teeney. You talk to the same person who shows up to do the work.
How soon can you clean my windows?
Most quotes come back the same day, and we typically schedule one to two weeks out depending on the season. You can lock in a time instantly through the booking form.
Do you offer a guarantee?
Yes. Every job comes with a 48-hour streak-free guarantee. If anything looks off within 48 hours, we come back and make it right.
Where we work
Throughout the Flathead Valley.
Window cleaning by town:
Ready for crystal-clear windows?
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