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Letter from John

The ThermaLast™ Story

Dear Homeowner,

Making homeowners happy has been my life’s work. As a 3rd-generation craftsman, I started working on homes as early as 13 years old.

So I was shocked when I started my own window replacement company back in 2014 that a window didn’t exist on the market that checked all of the boxes that our customers were looking for.

They wanted a beautiful, energy-efficient window that was sleek, secure, and that functioned in a way that fit their lifestyle – without breaking the bank.

My team and I looked everywhere for the right window. From big box stores to high-priced designers and manufacturers, we never could really find the right fit.

So I approached one of the best manufacturers, Sunrise Windows, about creating a window that fit the exact specifications that our customers were looking for.

After a lot of research, trial, and testing, we were really proud to finally go to market with the ThermaLast™ Window.

This window ended up being the most energy-efficient double-pane window on the market. With its air-tight construction and superior durability, the ThermaLast™ Window stands up to its name.

Since then, we’ve installed 38,431 ThermaLast™ Windows to 100% satisfied customers.

As you continue below, you’ll see the many details that go into this window. But the most important element for me is the pleasure it brings homeowners when they have a window that looks the way they want and functions the way they need.

I’m pleased to share the ThermaLast™ Window with you, and it’s my hope that it surpasses all of your expectations.

John K.

John Kolbaska
Founder, ThermaLast™ Windows

5/5

“The windows exceeded all expectations...Can't wait to replace the rest of my windows with them. Highly recommended!”

Anthony A.