Crystal-clear 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
Get a free quote
Fill it out, call, or text. Most quotes back same-day.
Or call (406) 607-2151 or text us · Try the instant calculator
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.
72-hour guarantee
Streak-free promise. Anything off within 72 hours, we come back and fix it.
What We Do
Residential
Hand-cleaned, frames and tracks wiped.
Commercial
Storefronts, multi-story, recurring contracts.
Post-Construction
Stucco, paint, debris removed clean.
Pressure Washing
Driveways, decks, siding, fences.
Additional Services
Solar panels, skylights, chandeliers, hard-to-reach interior glass
What customers say
★★★★★
"Highly recommended, fantastic service in all ways; the window cleaning itself and the customer service. Great price as well."
- Jayden Jacobson
★★★★★
"Barrett did a fantastic job on my building, prompt, prepared and professional. My windows look amazing."
- Katerina Robinson
★★★★★
"Interior and exterior our windows look so clear and beautiful! Exceeded our expectations."
- Addie C
★★★★★
"Competitive pricing, thorough job, very friendly. Will use you guys again."
- Darel Handley
★★★★★
"Barrett did such a great job. Took his time, was thorough. Recommend his business to anyone."
- Cheryl Klippenstein
Where we work
Throughout the Flathead Valley.
Ready for crystal-clear windows?
Free quote, no obligation. Same-day response.