ThermaStar by Pella®
- Easy to care for.
- Pella quality at an affordable price.
- Exceptional energy efficiency.
Design your own ThermaStar by Pella window.
Choose one of the available styles to begin.
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Why Choose ThermaStar by Pella?
Lower heating and cooling costs.
In a typical home, ENERGY STAR® certified windows can save an average $101 – $583 a year when replacing single-pane windows.35 The temperature throughout your home will be more comfortable and consistent.
ENERGY STAR® Performance. ThermaStar by Pella products offer the energy-efficient options that will meet or exceed ENERGY STAR guidelines in all 50 states.1
Durability, strength and performance.
Improved overall strength. The multichambered fully welded sash and frame improve the strength and thermal performance of windows.
Fewer worries about drafts and leaks. Steel-reinforced interlocking window sash increase energy efficiency by providing added wind resistance.
Years of smooth operation. Our Advanced Balance System ensures your double- and single-hung windows will open and close easily.31
How to Measure
Enjoy Satisfaction for Years to Come.
Pella® vinyl windows are backed by the Pella Limited Lifetime Warranty – one of the best warranties in the business. See written warranty for complete details.
Pella is Passionate About Quality.
Pella has a steadfast commitment to quality – going beyond what meets the eye.
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A Lowe's Project Specialist is ready to help.Schedule Your Free In-Home Consultation