ThermaStar by Pella® Vinyl WIndows

Window Types

Traditional look with today's most convenient features.

Double-Hung windows can be raised from the bottom and lowered from the top for two levels of ventilation.

*Available in the East Region only.

Traditional look with today's most convenient features.

Single-Hung windows can be raised from the bottom for ventilation.

Casement and Awning
Contemporary style and outstanding performance.

Casement windows feature a hinged sash that swings out.

Awning windows are hinged at the top, and open out like an awning.

Beautifully simple in every way.

Sliding windows feature a sliding panel that allows for easy operation.

Bay and Bow
Bring the outdoors in.

Bay windows are created by joining three windows together. The Center window is fixed — cannot be opened — with your choice of casement, double-hung* or single-hung** windows angled together on either side.

Bow windows feature standard-sized casement windows, joined to form a graceful curve.

*Available in East Region only.
** Available in West Region only.

Special Shapes
Architectural interest and more natural light.

Special Shape windows are fixed — cannot be opened — and add design interest and more natural light.

Back to top


Energy Efficiency

ThermaStar by Pella® windows offer the energy-efficient options that will meet or exceed ENERGY STAR® guidelines in all 50 states. ThermaStar by Pella offers you exceptional energy efficiency for the money.


Outstanding Durability

Interlocking, steel-reinforced sashes help seal out drafts and provide superior structural integrity and resistance to wind.

Effortless Operation

ThermaStar by Pella windows include an Advanced Balance System that outperforms the industry standard by more than 2-to-1.* Our Advanced Balance System helps to ensure years of smooth, effortless operation.
* In testing conducted pursuant to AAMA 902-07.

Low Maintenance

Maintenance-free vinyl interior and exterior frames never need painting, and solid color throughout vinyl keeps minor dings and scratches virtually invisible.

Easy To Clean

Double-Hung Windows*— both sashes tilt for easy cleaning of the exterior glass from inside your home.

Single-Hung Windows— lower sash tilts for easy cleaning of the exterior glass from inside your home.

*Available in East Region only.

Exact Fit

Whether you’re replacing, remodeling or doing new construction, there are ThermaStar by Pella® windows for your project. Choose from a wide selection of standard sizes or custom sizes in 1/8" increments.

? Click a feature or image hotspot to view details


read more

Frame Colors

Vinyl frames are a solid Almond or White color throughout the material. This keeps minor dings and scratches virtually invisible so interiors and exteriors stay looking great for years.

Frame Colors
Grille Options
Grille Patterns
Hardware Styles
Factory-Assembled Combinations
Glass Options

Photo Gallery

read more

This factory-assembled Almond vinyl fixed window is shown with double-hung windows on each side. The double-hung windows feature color-matched grilles-between-the-glass in a Custom (equally divided) pattern.