5000 Series Double Hung Windows EnergyStar Partner

Introducing the 5000 Series, a window designed for your peace of mind, with the energy efficiency, structural integrity and decorative features that you want.

Features & Benefits

Energy Savings
  • Peak PerformanceTM Glass combines one lite of Low-E glass and one lite of clear glass, enhanced with Argon gas and a warm-edge spacer system for increased thermal performance
  • Dual Compression Seals reduce air infiltration
  • Dual Weather-Stripping virtually eliminates air and water infiltration
  • Interlocking Sashes reduce air infiltration at meeting rail
Built to Last
  • Solid Vinyl Construction will not chip, peel or rot and never requires scraping or painting
  • Fusion-Welded Frame and Sashes for maximum strength
  • Parallel I-Beam Construction provides increased strength, durability and structural integrity
  • Multi-Chambered Construction provides enhanced structural integrity
  • Integral Pocket Header provides clean interior appearance and prevents air infiltration
  • Sloped Sill and Dual Drainage with weep system significantly improves water drainage
Life Made Easier
  • Lifetime Warranty, 50-year Insulating Glass Warranty and 25-year Glass Breakage Warranty for your peace of mind
  • Constant Force Balance System offers easy, frictionless sash movement
  • Balance Covers provide a clean, aesthetically pleasing appearance
  • Beveled Screen Track stiffens frame and enables easy screen removal
  • Fiberglass Half Screen is standard*
  • Equal Sash Sight Lines provide a greater viewing area
  • Extruded Vinyl Lift Rails ensure easy sash operation
  • Recessed Lock creates clean sight-lines
  • Dual Night Latches offer ventilation
  • Tilt Latches make it easier to clean your windows
  • Locking Zinc Pivot Pins prevent accidental sash removal while cleaning your windows

Energy Efficiency

The Series 5000 Window System protects your home and your wallet from rising heating and cooling bills with the Peak PerformanceTM Insulating Glass System. This advanced glass system features one lite of high performance Low-E Glass and one lite of clear glass, combined with insulating Argon gas and warm-edge technology, making your home a haven of optimum energy efficiency and comfort.

U-Factor comparison chart

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Air Infiltration

When it comes to air infiltration, less is more. The lower the CFM (cubic feet per minute), the less air the window lets pass through. This example shows how our windows compare to other windows and industry standards.

U-Factor comparison chart

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Fade Protection

Ultraviolet light inhibitors help prevent harmful UV rays from damaging and fading your furniture, drapes, carpets and hardwood floors.

U-Factor comparison chart

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Energy Efficient Glass Options

Thermal Windows & Doors is proud to manufacture vinyl replacement windows and doors with the ENERGY STAR® label. Every ENERGY STAR qualified window is independently certified by the National Fenestration Ratings Council, or NFRC, to perform at or above strict levels set by the U.S. Department of Energy. The rating gives you the tools needed to compare window performance.

Peak PerformanceTM Glass

Our Peak Performance Glass system is a dual-pane insulating glass system that combines one lite of high performance Low-E Glass and one lite of clear glass. The air space between the two is enhanced with Argon, an insulating gas. Consider the Peak Performance Glass system, which combines one lite of high-performance triple coat Low-E Glass and one lite of clear glass, for climates where solar control is important.

Peak PerformanceTM Ultra Glass

Peak Performance Ultra Glass combines triple glazing, Low-E Glass and Argon gas to offer a U-factor of 0.24, an insulating value that exceeds ENERGY STAR criteria.

Peak PerformanceTM Elite Glass

The addition of Krypton gas for optimal insulation gives our Peak Performance Elite Glass system an exceptional U-factor of 0.20, which far exceeds ENERGY STAR criteria and Department of Energy R-5 criteria (the lower the U-factor, the better a window insulates).

GreenSpec Listed

ENERGY STAR Climate Zone Map

Climate Zone map

Criteria for Windows

Climate Zone map

Standard Window Features

Recessed LockRecessed Lock
Night LatchNight Latch
Tilt LatchTilt Latch

Optional Window Features

Vortex Sill

VortexTM Sill

Quickly removes water from frame system and your home.

Magnetic Seal

Magnetic Seal

Creates air and water tight seal between sash and mainframe.

Foam Frame Wrap

Foam Frame Wrap

Provides an energy efficient weather seal around the entire window frame, outperforming traditional insulation.

Vinyl Color Options*





Painted Exterior Finish Options*

Custom color match is available

American ClayAmerican Clay
Safari BrownSafari Brown
Brick RedBrick Red

Wood Grain Interior Options*

Natural OakNatural Oak**


Honey OakHoney Oak***
Caramel OakCaramel Oak***

Grid Options

Choose from a variety of decorative grid patterns, styles and colors. All grids come between the glass for easy maintenance and a clean, modern look.

Grid options include:
  • 3/8″ square
  • 5/8″ flat
  • 5/8″ or 1″ contoured
contoured gridContoured
flat gridFlat
flat gridSquare

Custom Shapes

Make your home your own with custom window shapes and bold architectural statements. From octagons to trapezoids, full circles to half rounds, we can build a window to fit your needs and specifications.

circle-windowFull Round
half-circle-windowHalf Round

DreamGlas® Options

Dress up your windows with our gorgeous jewel cut, colored, and camed decorative glass patterns.

Crystal BorderCrystal Border
Crystal FacetsCrystal Facets
Gentle BlossomGentle Blossom

Obscure Glass Options

Choose this frosted glass option for rooms that require privacy.

Obscure GlassObscure Glass

Screen Options*****

Choose a screen with the lock and the functionality your home needs. Fiberglass half screens come standard with double hung windows, or choose from:

  • Half screen: In charcoal aluminum or Invisi-Screen®
  • Locking half screen: In fiberglass, charcoal aluminum or Invisi-Screen®
  • Full screen: In fiberglass, charcoal aluminum or Invisi-Screen®
Invisi-Screen ComparisonCompare Invisi-Screen® visibility (left) with Conventional Screen (right)

Hardware Options

Brushed NickelBrushed Nickel


energy-star-partner-80We offer a variety of high-performance, insulating glass systems that qualify our products for the ENERGY STAR label.

Manufacturer reserves the right to substitute components as necessary.

*Device screen may affect color shown. Please refer to actual window sample when selecting colors.

The availability of dark color options can vary by region. Ask your sales representative for details.

**Earthtone lock standard.

***Mocha lock standard.

****Standard on Honey and Caramel Oak. Not available on White and Earthtone.

*****Screens are not meant to restrain a child from falling through an open window.