Limited $0 Down · 0% Interest for 12 Months on approved projects — financing available
Window Installers Serving the DMV Since 1976

New windows make your house quieter, warmer, and worth more. Choose right and they last 30 years.

Pella, Andersen, Marvin, and ProVia installations. Energy-efficient double and triple-pane systems. Free in-home estimates across the DMV.

★★★★★ 4.9 · 62 Google reviews Licensed MD · VA · DC GAF · CertainTeed · Trex

Free in-home consult · Same-day quote when possible

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4.9 62 Google reviews
50 Years serving the DMV
5,000+ Projects completed
3 Jurisdictions licensed
4.9 ★ · 62 Google reviews · 5,000+ projects since 1976

What DMV homeowners say.

Our Commitment to You

Fully custom design
On time & on budget
Built by licensed professionals
Why Windows Matter

Old windows leak your money out, all year, every year.

Single-pane and early double-pane windows lose 25-30% of the energy in your house. You pay to heat or cool air that’s escaping through the glass and frame. In the DMV — humid summers, cold winters — the bleed is constant.

Drafty windows also let outside noise in, fail to filter UV (your furniture and floors fade), and look tired against an otherwise updated house.

Modern windows are a different product. Low-E coatings, argon fills, fiberglass and composite frames, modern weatherstripping. The right windows, installed right, pay for themselves in energy savings AND make your house feel different to live in.

Old windows leak your money out, all year, every year.
Your Options

Windows systems we install.

We install only what we'd put in our own homes. Here's what each option is best at.

Andersen 400 / E-Series

Andersen 400 / E-Series

Wood interior, fiberglass-clad exterior. The DMV's most-installed premium window.

Best for
Traditional and Craftsman homes; long ownership horizons
Typical range
$900 – $1,800 per window
Get a quote for this
Pella Architect Series

Pella Architect Series

Wood, fiberglass, and vinyl options. Strong design library; custom shapes.

Best for
Custom home aesthetics, contemporary trim details
Typical range
$700 – $2,200 per window
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Marvin Elevate / Essential

Marvin Elevate / Essential

Solid fiberglass frames, narrow sightlines, premium hardware.

Best for
Modern and modern-traditional homes
Typical range
$1,000 – $2,400 per window
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ProVia EnergyView

ProVia EnergyView

Premium vinyl. Excellent value, lifetime warranty, energy-rated.

Best for
Value-conscious whole-house replacement
Typical range
$500 – $1,100 per window
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Trusted Manufacturer Partners

Brands we install

We install premium, warranty-backed products from the industry's most trusted names.

Andersen — installed by Four Seasons
Pella — installed by Four Seasons
ProVia — installed by Four Seasons
VinylMax — installed by Four Seasons
Honest Pricing

What DMV window replacement costs.

Per-window installed pricing based on the last 200+ window projects in MD, DC, and VA.

$500 – $2,400
Per window installed
Material grade and size determine where you land in the range
25-30%
Energy bleed reduction
Average for whole-house replacement of single-pane or 1990s double-pane windows
68% ROI
Resale ROI
Per 2026 Cost vs. Value Report; vinyl windows post the highest ROI of any window type

What changes the number for your home

  • Window count. Per-window cost drops with volume; whole-house is usually best value
  • Frame material. Vinyl < composite < fiberglass < wood-clad — but lifetime cost is similar
  • Glass package. Double-pane standard; triple-pane available for sound or extreme efficiency
  • Window type. Double-hung, casement, awning, picture, bay/bow — each carries different labor
  • Trim & wrapping. Coil-wrapping aluminum trim outside for no-maintenance finish
  • Lead paint testing. Pre-1978 homes require lead-safe work practices (EPA RRP rule)
  • Interior finish. Restoring interior drywall, paint, and trim around the new windows
  • Permits. DC and most counties require permits; we pull in your name
How It Works

New windows in 1-2 days, not weeks.

01

Free in-home consult

We measure every window opening, photograph existing conditions, discuss material/style options, and provide a written per-window quote.

02

Order custom-size windows

Every window is built to your opening. Lead time is typically 4-8 weeks. We schedule the install once delivery is confirmed.

03

Installation in 1-2 days

Most whole-house jobs finish in 1-2 days. We protect floors and furniture, work room-by-room, and clean as we go.

04

Inspection + warranty

Manufacturer warranty registration, written Four Seasons workmanship warranty. We test every window for proper operation.

Why Four Seasons

Most installers can hang a window. We install the SYSTEM.

Sash, frame, insulation, flashing, and trim all matter. Cheap installs fail in year 5.

Andersen Certified Installer

Andersen's installer-certification program — required for their longest manufacturer warranties.

Pella Certified Contractor

Authorized to install and warranty Pella windows.

Proper flashing + insulation

We low-expand foam every opening and tape the head flashing. Most installers skip both. Both prevent water and air leaks.

50 years in the DMV

Same family. Second generation. We've installed every window brand and style this region has ever seen.

Triple-licensed

MHIC #129630 (MD), VA #2705082387A, DC #420224000125.

$0 down financing

$0 down, 0% interest for 12 months on approved window projects.

Where We Work

Window installations across the DMV.

Maryland, Washington DC, and Northern Virginia. Same-day quote scheduling for most ZIP codes.

Call (301) 948-2678 Get Free Quote
  • Rockville, MD
  • Bethesda, MD
  • Silver Spring, MD
  • Gaithersburg, MD
  • Potomac, MD
  • Frederick, MD
  • Annapolis, MD
  • Hyattsville, MD
  • Laurel, MD
  • Greenbelt, MD
  • Columbia, MD
  • Towson, MD
  • Arlington, VA
  • Alexandria, VA
  • Fairfax, VA
  • McLean, VA
  • Loudoun County, VA
  • Prince William County, VA
  • Ashburn, VA
  • Leesburg, VA
  • Washington, DC
  • Capitol Hill
  • Georgetown
  • Cleveland Park
Common Questions

Window replacement questions DMV homeowners ask.

How much do new windows cost?

Installed cost in the DMV runs $500-$2,400 per window depending on size, material, and brand. Vinyl windows fall on the lower end; wood-clad windows (Andersen, Marvin) on the higher end. Whole-house projects typically save 10-15% over individual windows.

How long does window replacement take?

Most whole-house projects finish in 1-2 days of install time. Lead time on custom-built windows is 4-8 weeks from order to delivery.

Will you have to remove the trim and drywall?

Depends on install method. We mostly use insert (pocket) installation when the existing frame is sound — fastest, least disruption. Full-frame replacement is needed if the existing frame has rot or for major frame upgrades. We assess at the quote.

What's the difference between vinyl and wood?

Vinyl: lower cost, no painting needed, lifetime warranty, but limited custom sizes. Wood-clad (Andersen, Pella, Marvin): more expensive but premium aesthetic, broader custom options, and higher resale impact. Both perform similarly on energy efficiency now.

How much energy will I save?

Replacing single-pane or 1990s double-pane windows with modern Low-E argon-filled windows typically reduces heating/cooling bills 15-25%. The Department of Energy estimates an average DMV home saves $250-$450/year on energy.

Do you handle the permits?

Yes, in your name. Most DMV jurisdictions require permits for window replacement.

What about lead paint?

For pre-1978 homes, we follow EPA RRP (Renovation, Repair, and Painting) rules — containment, lead-safe work practices, and proper disposal. All our crews are RRP-certified.

Do you offer financing?

Yes. $0 down, 0% interest for 12 months on approved window projects.

Free in-home estimates · Most quotes scheduled within 24 hours

Let's look at your windows.

Free in-home estimate. We measure everything and write up the project with options at multiple price points.

Call (301) 948-2678 hello@4seasonshome.com
Get Your Free Quote

Same-day response.

We'll text you within minutes to confirm details and schedule.

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More from the Resource Center

Deeper reads on DMV Window Replacement.

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