Customer Service

A great product is a good start, but installing a window or a door is not the end of the job for us. Before, during and after the installation, our team is there for you. We’re glad to answer any questions, and solve any problems you might have.

We are also proud to stand behind the strongest guarantee in our industry. You’ll find no small print in our warranty, just a guarantee of our product excellence.

If you have a service related issue, please click on the following link so that we can respond to your questions or concerns as quickly as possible:

Service Request Form

If you have not taken the opportunity to complete your warranty registration yet, please do so by clicking on the link below. This will help to protect your investment.

Warranty Form

Our window technology allows us to easily back up our work with one of the best warranties in the business. We stand behind our work, and can say with confidence you will not find a better window for your home.

image of a home featuring a Landmark replacement window

A Wide Range of Products

Choose from a complete range of products, all designed to make your home more attractive and energy efficient.

image of customers who have purchased Landmark replacement windows and are providing testimonials

Hear From Our Customers

"The best thing about the windows is that they have saved me on my heating bill. Thanks Landmark!"

image of a home that has been made more energy efficient with Landmark replacement windows

More Money In Your Pocket

It’s simple. The more energy efficient your home is, the lower your heating and cooling bills will be.

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Save Energy For The Future

We don’t believe in saving energy just to save money. We’re concerned about the legacy we’re leaving for our children.