Replacement Windows

Windows built for West Texas climate.

Custom-sized to your existing openings. Low-E coatings, argon-filled glass, and ENERGY STAR-certified performance from the ProVia Endure Series.

Get my free quote See it on your house

Our windows

Endless options, custom-built for your home.

When it comes to choosing windows for your home, business, or other structure, the options are almost endless. There are different styles such as sliding windows, picture windows, bay windows, and more, as well as choices for the frame and the glass.

Our featured window is the ProVia Endure Series, a professional-class vinyl replacement window with the ComforTech glazing package. It fits most West Texas and Southeast New Mexico homes, custom-built to your openings and backed by a lifetime warranty that transfers up to twice with the home.

A Klassen Window install, interior view of double-hung windows.

What you get

Three things every Klassen window install delivers.

Custom sizing

Whether big or small, Klassen Window and Door Co. can handle any size window needed to get the job done.

Choose your style

The style of your windows will depend on the design of your home and your personal preferences. Consider whether you would like a bay window or a picture window in your living room. Also, decide if you want your windows to be able to open, and if so, how you would like them to open.

Flawless installation

Our team of expert installers is dedicated to delivering exceptional quality and craftsmanship. We are happy to work around your schedule to ensure a seamless experience.

ProVia Endure · Our featured window

One window line, built to match your house.

We lead with the ProVia Endure Series because it sits a step above standard vinyl, upper-middle in build and performance, without the premium price of clad-wood. Energy-efficient, fully custom, and warrantied for the life of your home.

Built & glazed for West Texas

Comfort and efficiency

The Endure Series pairs a multi-chambered, fusion-welded vinyl frame with ProVia's ComforTech glazing package, engineered to hold conditioned air in and the Permian Basin heat out.

Multi-chambered, fusion-welded vinyl frame
ComforTech Low-E glass, argon fill, warm-edge spacer
ENERGY STAR certified configurations
Double-hung, slider, casement, picture, bay & bow
Custom-sized to your existing openings

Warranty that follows the home

Lifetime, transfers twice

The Endure Series carries a lifetime limited warranty that transfers up to two times to future homeowners, real value at resale. On top of that, Klassen backs the installation itself.

Lifetime limited product warranty
Transfers up to two times with the home
Non-prorated coverage
Klassen labor warranty on workmanship (original homeowner)
Full range of interior & exterior colors and grids

Our easy 3 step process

Offering FREE Consultations virtually or in person.

To set up a free in-home consultation, simply make a quick call or submit an online form. Our friendly sales consultant will accurately measure your openings, show you the different options available, provide product demonstrations, and help you choose the best product for you.

Step 1: Measure

Once a contract has been created, we will schedule an appointment for a technician to come out and double-check the measurements of the product openings. This verification is important to ensure that the measurements are accurate and that orders can be placed with confidence. Ensuring the job is done right the first time.

Step 2: Install

After your products arrive, we will schedule your installation promptly. Our installers will arrive on time and ready to work. Once the installation is complete, your windows will be covered by the best warranties in the business.

Step 3: Complete Satisfaction

Our top priority is ensuring complete customer satisfaction. Our team members are available to assist you before, during, and after your remodel if you have any questions or concerns. We are committed to doing everything possible to ensure that you are a 100% satisfied customer.