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Window Replacement by Maryland and Virginia’s Most Trusted Contractor

40,000+ windows installed since 1986. Premium brands, expert installation, and flexible financing to make your window replacement simple and stress-free.

40+
Years in business
30,000+
Happy homeowners
40,000+
Windows Installed
A+
BBB rating

The Window Contractor Maryland and Virginia Homeowners Trust

Windows install by AHC technician in Maryland

Window Replacement in Maryland

Window Replacement in Virginia

Windows install by AHC technician in Virginia

Ready for New Windows?

From consultation to installation, our process is designed for simplicity and satisfaction. Schedule your free window replacement consultation today.

Window Materials We Install

Vinyl Replacement Windows

AHC installed vinyl window
Wood windows installed by AHC

Wood Replacement Windows

Fiberglass Replacement Windows

Fiberglass windows installed by AHC
Aluminum windows installed by AHC

Composite and Aluminum Replacement Windows

The Benefits of Window Replacement

AHC technician pointing to energy efficient window

Energy Efficiency and Lower Utility Bills

Higher Resale Value and Curb Appeal

Increase home value with AHC installed windows
Female sitting inside of home on a busy street

Comfort, Quiet, and Healthier Indoor Air

Stronger Security and Forced-Entry Resistance

Enhanced security on windows installed

Our Window Replacement Process

A clear, predictable path from free consultation to finished install. The same process has guided more than 40,000 successful window replacement projects across Maryland, Virginia, and Washington DC.

Step 01

Free In-Home Consultation

A senior window contractor visits your home, measures every opening, inspects existing framing for moisture or rot, reviews your goals, and walks you through available brands, glass packages, and color options. You’ll receive itemized pricing, a clear timeline, and zero-pressure recommendations.

Step 02

Custom Order and Pre-Install Preparation

Every replacement window is built to the exact dimensions of your opening. We place the order with the manufacturer, confirm specifications, secure required permits, and coordinate installation around your schedule. Lead times vary by product and manufacturer.

Step 03

Professional Installation

Our installation crews arrive on time, protect flooring and landscaping, and remove existing windows one opening at a time. Each new window is carefully shimmed, insulated, sealed, and flashed to ensure long-term performance, efficiency, and weather protection.

Step 04

Final Walkthrough and Lifetime Support

Before we leave, we inspect every completed window with you, demonstrate operation and maintenance features, register applicable warranties, and answer any remaining questions. If you ever need support, our team is only a phone call away.

Complete Your Home’s Exterior

Pair your window replacement with other exterior upgrades for maximum curb appeal and energy savings.

Why Homeowners Choose Us for Window Replacement

With over a century of combined experience, our track record is a testament to the unmatched quality we deliver.

40+
Years

Decades of Experience

Since 1986, we have completed thousands of window replacement projects across Maryland, Virginia, DC, and Pennsylvania. Our expertise ensures every project is done right the first time.

Multiple
Brands

Premium Window Brands

We install windows from Pella, Andersen, Marvin, Sunrise, MI Windows, and ProVia, giving you access to the best products in the industry.

Top 5%
of Contractors

ProVia Certified

Our certification demonstrates our commitment to the highest standards of installation quality. Fewer than 5% of contractors achieve this designation.

8,000+
Reviews

5-Star Reputation

More verified five-star reviews than any other home improvement contractor in the DMV. Our reputation is built on results, not promises.

Our Latest Projects

See our most recent work across Maryland, Virginia, and Pennsylvania.

American Home Contractors latest projects

Over 8,000 Five Star Reviews

See what our customers are saying →

Industry Leading Roof Repair Certifications & Partnerships

Our window division is certified by the leading manufacturers in the industry and trained to install for performance, comfort, and energy efficiency.

Andersen Certified Contractor
Pella Certified Contractor
Marvin Authorized Installing Retailer
Sunrise Preferred Dealer
BBB A+ Rating

Frequently Asked Questions

A typical full-home window replacement runs 1 to 3 days on site. Individual windows are usually removed and installed in 45 to 90 minutes each, and our two- to three-person crews complete most projects in a single visit. Larger homes, custom shapes, and full-frame replacements that require trim and siding work can extend to a week. Your window contractor project manager gives you a firm schedule, daily start and stop times, and a single point of contact before work begins.
Spot repairs make sense for a single broken sash, balance, or cracked pane on otherwise sound windows. Replacement is the smarter long-term decision once you see fogging between panes, rotted sills, paint that will not hold, recurring drafts, or rising utility bills. As an independent window contractor we will tell you honestly when repair is the better call and when replacement is the only path that actually solves the problem. Free in-home consultations include a window-by-window assessment.
We install every common residential window style: double-hung, single-hung, casement, awning, sliding, picture, bay, bow, garden, hopper, and architectural shapes including round-tops, eyebrows, octagons, and trapezoids. Our window replacement portfolio also includes full bay and bow rebuilds with insulated roof systems, custom mullion patterns, and tilt-turn European-style windows for modern builds. Brands include Pella, Andersen, Marvin, Sunrise, MI Windows, and ProVia.
Most DMV window replacement projects land between $575 and $1,200 per window installed, with vinyl on the lower end, fiberglass and wood on the higher end, and large custom shapes priced individually. Pricing reflects the frame material, glass package, hardware, color, install type (insert vs. full-frame), and any rotted framing or trim repair needed. Every quote we issue is itemized, fixed, and good for 90 days. As your window contractor, we will not surprise you with change orders mid-project.
Yes. ENERGY STAR certified window replacement qualifies for the federal Energy Efficient Home Improvement Credit, currently up to $600 per year toward windows. Maryland and Virginia utilities including BGE, Pepco, Dominion Energy, and Washington Gas frequently offer additional rebates on qualifying high-performance glass packages. Our window contractor team supplies the manufacturer NFRC labels and product spec sheets you need to claim every credit you qualify for.
Yes. We offer flexible window replacement financing through our GreenSky and Service Finance programs, including 12 months with no payments and no interest on approved credit, plus low monthly payment plans up to 144 months. Most homeowners get an instant credit decision during the consultation. Financing is optional, never required, and never affects the price we quote.
A correctly installed window replacement should perform for 20 to 30 years before noticeable seal failure or hardware wear. Premium fiberglass and wood-clad windows from Marvin, Andersen, and Pella routinely exceed 30 years when installed by a qualified window contractor with proper flashing and air sealing. Every window we install carries a manufacturer warranty (lifetime transferable on most vinyl and fiberglass lines) plus our own lifetime labor warranty on the install itself.

Get Free Consultation

Call today to schedule an appointment with a roofing, siding, gutter, window, solar, or door expert. We’re available morning, afternoon, and evening Monday through Saturday for your convenience!