# Integrity Windows — Replacement Windows in the Fox Valley, IL

## Summary
Integrity Windows (the trade name of M&D Enterprise Services LLC) is a veteran-led installer of
premium, energy-efficient Lindsay vinyl replacement windows for residential and commercial
properties across the Fox Valley and western Chicago suburbs. The company installs windows only.
Founded by former licensed real estate brokers and led by Mark Metzger — a former U.S. Navy
Commanding Officer — it combines premium products with real-world property insight and disciplined,
military-grade project management. Tagline: "Integrity…because it matters."

## Contact
- Phone: (630) 360-4945
- Email: mark@integritywindowsanddoors.com
- Website: https://integritywindowsanddoors.com
- Service area: the Fox Valley and western Chicago suburbs, IL (St. Charles, Geneva, Batavia, Aurora, Naperville, Wheaton, Elgin, Glen Ellyn, Oswego, North Aurora)

## What We Offer
- Window series (Lindsay Windows, family-owned in Aurora, IL since 1947): Pinnacle (flagship ENERGY STAR), ClimateSmart (max thermal performance), SunView (Low-E glass), DiamondView (premium appearance), CrownView (value), Revolution (tilt-and-turn).
- Energy-efficient vinyl replacement windows for both residential and light commercial / multi-unit applications.
- Windows only — Integrity Windows does not currently sell or install doors.

## Why Integrity
- Premium, energy-efficient products suited to the Illinois climate.
- Real-world insight into how windows affect comfort, operating costs, and property value (decade-plus as real estate brokers).
- Disciplined project management rooted in U.S. Navy leadership.
- One seasoned installation crew that works with us exclusively.
- Transparency and long-term relationships over one-off sales.

## Tools
- Instant Estimator: choose property type, window series, and the number of windows for a ballpark installed range. Installed vinyl windows run roughly $450 (value) to $1,800 (specialty tilt-and-turn) each. The estimate is a planning ballpark, not a quote — an exact quote follows a free in-person measure.

## Pages
- Home: https://integritywindowsanddoors.com/
- Free Estimate (estimator): https://integritywindowsanddoors.com/#estimator
- About: https://integritywindowsanddoors.com/#about
- Contact: https://integritywindowsanddoors.com/#contact
- Articles: https://integritywindowsanddoors.com/articles

## Articles
- 7 Signs It's Time to Replace Your Windows: https://integritywindowsanddoors.com/articles/signs-its-time-to-replace-your-windows
- How Much Do Replacement Windows Cost in the Fox Valley?: https://integritywindowsanddoors.com/articles/replacement-window-cost-fox-valley
- Energy-Efficient Windows, Explained: U-Factor, Low-E, and SHGC: https://integritywindowsanddoors.com/articles/energy-efficient-windows-explained
- Do New Windows Increase Home Value? The ROI of Replacement: https://integritywindowsanddoors.com/articles/do-new-windows-increase-home-value
- Commercial Window Replacement: A Capital-Planning Guide: https://integritywindowsanddoors.com/articles/commercial-window-replacement-guide
- Why a Disciplined Installer Matters More Than the Window: https://integritywindowsanddoors.com/articles/why-the-installer-matters-more-than-the-window
- Vinyl vs. Wood, Aluminum, and Fiberglass: What Actually Lasts: https://integritywindowsanddoors.com/articles/vinyl-vs-other-window-materials
- Insert vs. Full-Frame Window Replacement: Which Do You Need?: https://integritywindowsanddoors.com/articles/insert-vs-full-frame-replacement
- What ENERGY STAR Means for Your Windows (and Your Bills): https://integritywindowsanddoors.com/articles/what-energy-star-means-for-windows
- How to Cut Drafts and Lower Heating Bills This Winter: https://integritywindowsanddoors.com/articles/cut-drafts-lower-heating-bills
- A Homeowner's Guide to Window Styles: Double-Hung, Casement & More: https://integritywindowsanddoors.com/articles/window-styles-guide
- What to Expect on Window Installation Day: https://integritywindowsanddoors.com/articles/what-to-expect-on-installation-day