Premium Window Performance Comparison
Double Hung Windows with Colonial Grids (Under 101")
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At The Window Place Plus, we understand that choosing the right replacement windows for your home is a big decision.
That’s why we’ve prepared this premium window comparison for New Jersey homeowners so you can see exactly how the top brands stack up in performance, durability, and value.
Whether you’re looking for maximum energy efficiency, superior weather protection, or a lifetime of worry-free operation, our detailed analysis will help you make the most informed choice.
Brands Compared
Our side-by-side evaluation covers four leading double-hung window models with colonial grids (under 101”):
OKNA Eco Pro Deluxe
Marvin Essential
Pella Impervia
Andersen 400 Series
Key Performance Highlights
Specification | OKNA Eco Pro Deluxe | Marvin Essential | Pella Impervia | Andersen 400 Series |
U-Value Range | 0.16-0.28 (BEST) | 0.23-0.33 | 0.23-0.29 | 0.26-0.31 |
Best Configuration | 0.16 (Triple/Krypton) | 0.23 (Low-E3/Argon) | 0.23 (SunDefense+) | 0.26 (SmartSun) |
SHGC Range | 0.19-0.40 | 0.20-0.33 | 0.19-0.37 | 0.20-0.32 |
Energy Star Zone 4 | ✓ Multiple Options | ✓ Certified | ✓ l Configurations | ✓ All Zones |
STC Rating | 26-28 | Up to 33 (BEST) | 29 (laminated) | 26-28 |
OITC Rating | Not specified | 28 | 26 | Not specified |
Air Leakage (cfm/ft2) | 0.02 (15X BETTER) | ≤0.25 | ≤0.30 | ≤0.30 |
Design Pressure | R50 (82% ABOVE MIN) | LC-PG25 to LC-PG50 | LC30-LC50 | LC30-LC50 |
Wind Resistance | 171 mph | Standard | Standard | Standard |
Frame Material | Virgin Vinyl (U-PVC) | Ultrex Fiberglass | Duracast Fiberglass | Wood/Vinyl Clad |
Corner Construction | Thermally Welded | Mechanically Joined | Mechanically Joined | Mechanically Joined |
Frame/Sash | Lifetime (Transferable) (BEST) | 10 years | Lifetime | 10 years |
Glass Seal | Lifetime | 20 years | 20 years | 20 years |
Hardware | Lifetime | 10 years | 10 years | 10 years |
Installation | Dealer Dependent | Not Included | 2 years | 2 years |
Key Performance Findings
Superior Energy Efficiency
OKNA Eco Pro Deluxe achieves the lowest U-values (0.16) with triple-pane configurations and industry-leading air infiltration rates (0.02 cfm/ft2)
Best Sound Control
Marvin Essential delivers exceptional noise reduction with STC 33/OITC 28 ratings through enhanced dual-pane configurations
Structural Excellence
OKNA’s R50 design pressure rating and 171 mph wind resistance exceed minimum requirements by 82%, providing superior protection against nor’easters
Premium Materials
All four models offer excellent material choices – OKNA’s virgin vinyl provides lifetime durability with zero maintenance, while Marvin and Pella’s fiberglass offers exceptional dimensional stability
Comprehensive Protection
OKNA offers lifetime transferable warranties on all components, exceeding competitor coverage by 10+ years
Why OKNA Eco Pro Deluxe Excels for New Jersey Properties
The OKNA Eco Pro Deluxe represents an exceptional window solution for New Jersey homes, where Climate Zone 4A demands superior year-round performance. The window’s remarkable air infiltration rate of 0.02 cfm/ft2 – fifteen times better than industry standards – virtually eliminates drafts while dramatically reducing heating and cooling costs throughout New Jersey’s temperature extremes.
Beyond energy efficiency, the R50 design pressure rating and 171 mph wind load resistance provide substantial safety margins for the severe weather events common to the Mid-Atlantic region. The lifetime transferable warranty on all components protects your investment far beyond typical 10-20 year competitor coverage. Virgin vinyl construction with thermally welded corners ensures decades of maintenance-free operation, resisting the wood rot, seal failures, and finish degradation that plague lesser windows in New Jersey’s variable humidity.
When configured with premium double-pane Low-E glass and argon fill, OKNA delivers exceptional thermal performance with U-values reaching 0.26, providing the energy efficiency, structural integrity, and long-term reliability that New Jersey homeowners need to maintain comfortable, energy-efficient homes while adding substantial property value.
Documentation & Sources
OKNA ECO-PRO Performance Specifications – Siding & Windows Wizards LLC Professional Documentation
Marvin Essential Double Hung Technical Specifications – Marvin Windows Official Product Documentation
Pella Impervia Double Hung ADM Specifications – Pella Professional Technical Documentation
Pella Impervia Product Specifications – Pella at Lowe’s Commercial Documentation
OKNA Double Hung DH600 Product Specifications – OKNA Windows Official Technical Data
OKNA Windows Warranty Documentation – Pinnacle Window Company Authorized Dealer Information
Marvin Windows Comprehensive Review 2025 – This Old House Professional Analysis
Pella Lifetime Limited Warranty Details – Pella Windows & Doors Official Warranty Documentation
Prepared for: Residential Window Replacement Evaluation in New Jersey
Configuration: Double Hung Windows with Flat Colonial Grids Under 101″ • Climate Zone 4A Mixed-Humid
All specifications verified through manufacturer documentation and NFRC certified testing standards
We’re Here To Provide Professional Guidance
At The Window Place Plus, we take a consultative, customer-first approach. We’ll walk you through each option, answer every question, and ensure your choice matches your home’s style, budget, and performance needs.
We’ve proudly served Camden County, NJ and surrounding New Jersey communities for over 35 years, delivering precision window installation, lifetime warranties, and unmatched customer care.
Contact The Window Place Plus today by clicking the button below for your free in-home consultation.
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Window Place Plus replaced our front door and did a great job. They were great to work with from the sales process to the install. Both our sales person, Jeff; PM, Rob; and installer, Tom were all awesome and incredibly helpful, communicative and friendly. I'll definitely be using them again in the future when we're ready to replace our siding and windows.
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