NorthWind windows

NorthWind III Series

Fusion-welded vinyl windows with Energy Star performance and a lifetime transferable warranty. Measured, installed, and warranted by our team, with rebate paperwork handled for you.

4.9
What it is

Maintenance-free windows built for smooth operation and lasting beauty

The NorthWind III Series is a fusion-welded, Energy Star rated vinyl window with a lifetime transferable warranty. A heavy-duty block and tackle balance system keeps both sashes operating smoothly for years, and the fully weatherstripped meeting rail and sloped sill seal out air and water. Both sashes tilt in for easy interior cleaning. No painting, sanding, or refinishing required.

Dual-pane with DuraLite warm-edge glass comes standard. A triple-pane R-5 upgrade, with argon fill and CCore reinforcement, is available for maximum efficiency. The Energy Star triple-pane package qualifies for the $100-per-window Energize CT replacement rebate.

NorthWind III double-hung vinyl window — fusion-welded frame with dual-pane glass

Choosing your windows

Triple-pane R-5 option for maximum efficiency

Dual-pane for solid Energy Star performance at lower cost

Available in eight standard colors in addition to white, plus custom paint and wood grain staining

Double-hung, sliding, casement, picture, hopper, awning styles

What changes

After NorthWind III windows are installed

Warmer rooms Cold spots stop coming in

Fusion-welded frame with multi-chambered hollows and DuraLite warm-edge spacer create greater insulating value. NFRC-rated U-Value of 0.20 on the triple-pane option.

Lower bills Your heating system runs less

Energy Star rated standard. The R-5 triple-pane option reduces heat loss 30-40%. Fully weatherstripped sashes block air infiltration.

Years of easy use Windows that stay easy to open and clean

Block and tackle balance system for smooth operation, both sashes tilt in for easy cleaning, and the vinyl never requires painting, sanding, or refinishing. Lifetime transferable warranty.

What families say

Reviews from window and home performance projects

4.9
David Lasecki Jan 12, 2026
Written by my mother who recently had work done on her house: "I highly recommend HCP! The crew were knowledgeable, and professional from audit to completion of project. They answer any & all questions or concerns. They cleaned all areas worked on leaving my home pristine daily. Customer Service is OUTSTANDING, especially Lucy B. who was so informative & friendly. So impressed with this company, they not only did my insulation but replace my windows as well! Thank you so much Mr. Wyatt for helping me make my home energy - efficient!!!"
Gary Helik Sep 13, 2024
Justin and Pete did a comprehensive and detailed energy audit, incorporating a blower test for air infiltration, of our condo in Brookfield CT. As our condo has a number of energy upgrades like new windows, doors, and insulation there were no surprises that came up, which was good news. We were happy with how Justin and Pete explained the test and it’s results.
Pam Harris Feb 15, 2024
The crew meticulously went through my home....insulated windows and drafty areas, installed weatherstripping around my door jambs, checked my windows to ensure no air was finding its way in. They provided me with recommendations, such as buying magnetic covers for my a/c vents on the ceiling, covering the a/c return, and buying LED covers for the recessed lighting in my dining room, all as a means to reduce cold air from coming into my house from my attic space. They inspected my home for insulation needs and will be providing me with a quote soon. I highly recommended Home Comfort Practice. Take advantage of the wonderful Energize CT program and get your energy audit scheduled today.
Common questions

Common questions about NorthWind III

How do NorthWind windows compare to Destiny?

What does the lifetime warranty actually cover?

Are there rebates for these windows?

How long does installation take?

What colors are available?

Is NorthWind III Energy Star Most Efficient?

What glass packages can I choose from?

Can I get custom shapes and sizes?

Are these windows hard to clean and maintain?

When should I call a professional instead of doing it myself?

Home Comfort Practice HVAC specialist ready to help

Talk to a specialist

Call (203) 450-3000 or request a free window estimate.

4.9

Ready for new windows?

Free in-home consultation and measurement. Our team handles installation, warranty support, and the $100-per-window Energize CT rebate paperwork on qualifying triple-pane windows.

Energize CT Authorized Contractor Eversource Authorized BPI Certified Licensed HIC #0644515 BBB A+
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