Okna 800 vs 500 — is the upgrade worth it?

For most homeowners, yes if the price gap is under $150/window. The 800 series adds a narrower frame, better air infiltration (0.02 vs 0.05+), upgraded hardware, and the Deluxe package option. The 500 Insul-Tec is still an excellent window — many pros call it the best value in the Okna lineup. If budget is tight, the 500 will serve you well for decades.

How much do Okna windows cost per window?

Okna windows cost $800 to $1,300 per window fully installed in 2026. Real 2026 homeowner quotes show the 500 Deluxe around $927–$986/window and the 800 Deluxe around $986–$1,118/window in Pennsylvania, with higher prices in New England. Always collect 2–3 local dealer quotes.

Okna vs ProVia Endure — which is better?

It is a coin flip — both are elite vinyl windows. Okna 800 wins on air infiltration (0.02 vs 0.05) and frame engineering; ProVia Endure wins on warranty (accidental glass breakage coverage) and slightly wider availability. Compare installed quotes from good local dealers and pick the better installer, since both windows will perform excellently.

Why are Okna windows hard to find?

Okna sells exclusively through a small network of authorized dealers and does not advertise nationally like Andersen or Pella. Availability is strongest in the Northeast and Mid-Atlantic (Pennsylvania, New Jersey, New York). If no dealer serves your area, comparable alternatives include ProVia Endure, Soft-Lite Elements, and Sunrise Vanguard.

What does the Okna Deluxe package include?

The Deluxe package upgrades the standard Energy package with a foam-filled frame for extra insulation, upgraded glass options, and a locking screen. On the 800 series it is the most popular configuration and typically adds $50–$100 per window over the base Energy package — money well spent for the performance gain.

Are Okna windows Energy Star certified?

Yes. Okna windows meet Energy Star requirements in all climate zones with the right glass packages, and the 800 series exceeds them comfortably thanks to its 0.02 air infiltration rating and optional triple-pane glass. Ask your dealer for the NFRC label on your exact configuration.

Okna Window Cost Calculator

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Engineered for Performance. Built in Pennsylvania.

Updated September 2026

Okna is a family-owned manufacturer from Bristol, Pennsylvania, beloved by window enthusiasts for best-in-class air infiltration numbers. The 800 series (also sold as HiMark 800) posts a remarkable 0.02 air infiltration rating — among the tightest vinyl windows you can buy.

Quick Answer

Okna windows cost $800 to $1,300 per window fully installed in 2026, averaging around $1,000. The 500 Insul-Tec ($800–$1,000) is the value pick, the 600 EcoPro ($900–$1,150) is the balanced middle, and the flagship 800 series ($950–$1,300, also sold as HiMark 800) delivers a best-in-class 0.02 air infiltration rating. Okna sells through authorized dealers only.

4.7

(4,180 reviews)

Founded 1993

Lifetime limited warranty on windows and parts for the original owner

Starting Price

$800

Premium Price

$1,300

*Per window, including installation

Cost Calculator

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Estimated Total Cost

$2,250 - $4,250

$450 - $850 per window

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Product Lines

500 Insul-Tec

Entry/mid vinyl — the value sweet spot

$800-1,000

per window

600 EcoPro

Newer design, near-800 performance

$900-1,150

per window

800 (HiMark 800)Premium

Flagship vinyl, 0.02 air infiltration rating

$950-1,300

per window

Strengths

Best-in-class air infiltration (0.02 on 800 series)
Excellent build quality and foam-filled frames
Deluxe package adds locking screens and upgraded glass
Strong reputation among window professionals
Good value vs performance ratio

Considerations

•Dealer-only sales — limited availability by region
•Less national brand recognition than Andersen/Pella
•Fewer style and color options than big brands
•Premium pricing over budget vinyl

Warranty Information

Lifetime limited warranty on windows and parts for the original owner

Okna Windows vs Competitors

Brand / Series	Installed Price	Quality	Warranty
Okna 800	$950–$1,300	0.02 AI rating, elite vinyl	Lifetime limited
ProVia Endure	$1,000–$1,250	0.05 AI rating, top-10 vinyl	Lifetime + glass breakage
Soft-Lite Elements	$950–$1,250	Premium vinyl, strong ratings	Lifetime limited
Sunrise Vanguard	$900–$1,200	Good vinyl, slim frames	Lifetime limited