Pricing
Window Replacement Instant Estimator
ProVia Endure Series — typically $925-$1,650 per window installed, depending on style. Count your own windows or upload photos and our AI will count them for you. Final pricing confirmed after a free in-home measurement.
- 1Counting guide
- 2Choose mode
- 3Add windows
- 4Review
- 5Submit
Step 1 · Counting Guide
How to count your windows
Your ballpark is only as accurate as the count. Two quick rules cover most NoVA homes — read these first, then continue.
Picture window flanked by 2 double-hungs = 3 windows
Each pane gets its own count. The double-hungs are individual units even when they sit in the same wall opening as a picture window.
Two double-hungs joined in one frame = 2 windows
A mulled pair is still two windows — count each operable sash unit separately even when they share a frame.
A few more rules of thumb:
- Garage windows count.
- Basement windows visible above grade count.
- Sliding glass patio doors do NOT count as windows.
- Bay or bow units count as one custom-quote item — those need an in-home measurement.
ProVia Endure Series
Premium vinyl, instant pricing
The Endure is ProVia's flagship vinyl line and our most-recommended window for Northern Virginia. We've priced it instantly here — Pella Lifestyle, ProVia Aspect, wood, and fiberglass options need an in-home measurement to quote.
SunShield Vinyl
Heat-reflective vinyl stays cool in direct sun — won't warp, distort, or discolor.
ComforTech DLA-UV Glass
1" insulated unit with dual Low-E coatings and argon fill. U-factor 0.20–0.25.
INNERGY Thermal Reinforcement
Fiberglass-reinforced inserts replace metal — strength without thermal bridging.
Frequently Asked Questions
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