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Homeowner Viewing New Window Installation Proposal

Pella Certified Window and Door Installers for St. Louis Homeowners

Highest Quality Materials
Trustworthy Craftsmanship
Exceptional Communication Start to Finish
We are Pella Certified

LIMITED TIME OFFER

0% Interest Financing + $150 OFF Each Pella Window

St. Louis’ Leader in Windows & Doors


Request Your Free Estimate Today

Elite Window & Door Installation, Trusted by Pella

We are in Elite Company

Fewer than 5% of contractors nationwide earn Pella's Certified designation. With Sane Windows, you can trust your project is installed flawlessly the first time.

Pella Trained and Certified

Pella Certified Contractors are trained, certified, and background-verified. Sane Windows can help you find the perfect Pella products for your home.

Unmatched Warranty Protection

Enjoy Pella’s industry-leading coverage, plus our additional labor warranty—ensuring your home is protected inside and out.

Skip the Hardcore Sales Pitch

Other companies often try to upsell and push products you don’t really need or want. At Sane Windows, we are different. Here's what you can count on us not doing:

No Pushy Salesman

No 3-Hour Sales Pitch

No Gotcha Clauses

Close-Up of Secure Window Locking Mechanism

Why Go Energy Efficient?

Our White-Glove Installation Process

Window Frame Replacement for Energy Efficiency

Browse Online – Schedule When You’re Ready

At Sane Windows, we know starting your window replacement journey shouldn’t mean a high-pressure sales visit. That’s why we make it easy to explore our services online—no appointment needed. Browse products, view brochures, watch videos, and more—all at your own pace.

Find something you love? Reach out anytime for a transparent, no-pressure quote!

We Work Hard for Your Feedback

Happy homeowners are our best advertisement. It starts with every member of our team, from your initial contact through the final installation. Learn why your neighbors trust Sane Windows.

Featured Products

Discover our most popular window and doors from top-rated manufacturers. Click below to learn more and get pricing.

Bay Window Installation for Living Room View

The Signet 420 Fir Fiberglass Door with Waterfall glass and Roasted Cashew stain blends rustic charm with energy-efficient design.

Expert Installer Aligning Window for Proper Fit

The Fiber-Classic Mahogany Soft Arch door in Rustic Clay combines classic charm with durability, energy efficiency, and optional sidelites.

Stylish White Vinyl Window Installation Close-Up

The Smooth-Star 1 Panel Shaker Door in Cypress combines modern style with energy efficiency and durability for a timeless, low-maintenance entryway.

Shop Windows and Doors by Material

At Sane Windows and Doors, we offer premium window and door solutions for every homeowner. Choose the timeless elegance of true wood, the durability of fiberglass, or the energy-efficient, low-maintenance benefits of vinyl. Enhance your home’s beauty and performance with our most popular products.

Top Rated Window Installations in St. Louis MO

At Sane Windows and Doors, we provide premium Pella vinyl, fiberglass, and wood windows at direct-to-homeowner pricing. As a Pella Certified Contractor and locally owned family business, we ensure expert installation and exceptional service for your home improvement needs.

Replacement doors Chesterfield MO – modern entry door design
Residential Window Installation with Double-Hung Style

Get a Window Quote in Minutes – No Hassle, No Pressure

Getting a window quote should be quick and stress-free. At Sane Windows, we make it easy with FREE online or in-person quotes in just minutes!

Avg. Time to Upload Photos Online

0min

Get your quote in just 6 minutes—quick, easy, and completely online.

Avg. Time for Our In-Home Appointment

0min

Our no-sales-pitch approach means your appointment takes half the time of our competitors.

News & Resources

Stay informed with the latest industry news and find valuable resources for your window and door projects.

Ask Before Buying Windows - Window Replacement Weldon Spring Mo
Ask these 10 questions before buying windows and doors to make an informed choice. Learn about materials, costs, and customization.
Ask Before Buying Windows - Window Replacement Weldon Spring Mo
Explore the latest door trends—minimalist looks, natural materials, bold statements, classic glass, and smart doors—to match your home’s style and function.

LIMITED TIME OFFER

0% Interest Financing PLUS $150 OFF Each Pella Window

St. Louis’ Leader in Windows & Doors


Request Your Free Estimate Today

Get Your Quote Online

Save time and get your quote online in minutes! Typically, No sales visit is needed.

Let us come to you

Need help! Schedule a hassle-free, no-sales pitch consultation at your convenience.

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