What You Need to Know About Replacement Window Warranties

Replacement doors and windows can be a significant investment. One way you can make the most of your purchase is to work with a contractor who offers comprehensive warranties for labor and material. It can help ensure that your new windows are protected from poor workmanship and manufacturer’s defects.  

Read on to learn more about replacement window warranties. 

What Does a Replacement Window Warranty Usually Cover?

Window Material

Window materials are usually guaranteed to withstand damage and signs of deterioration for a certain period. Material warranties typically cover the window’s hardware and glass. Manufacturers often cover fading colors or finishes under their warranties. In case you find that your new windows or patio doors have broken or malfunctioning hardware, you can reach your certified installer to have the unit repaired or replaced under warranty. 

Modern replacement windows feature multiple glass panes with gas fills in between, such as argon and krypton. These gases improve the insulating properties of your windows, making them more energy-efficient. They naturally leak from the glass at a rate of 1% or less every year. However, if the unit allows inert gases to escape at a rate faster than this, the issue may be covered under warranty. 

At Renewal by Andersen® of Nashville, all our replacement windows and patio doors come with strong warranty coverages. Our energy-efficient replacement windows and glass options are guaranteed not to develop material imperfections due to manufacturing defects or due to early failure for 20 years from the installation date. If glass failure occurs due to manufacturing defects or faulty installation, we will provide and install the appropriate replacement glass product or provide a factory-certified repair to the existing glass. We will provide this service as long as your window warranty remains valid. 


You want to work with a contractor who offers warranties not only for materials, but also for labor. If your installer does not carry warranties, they won’t be held liable for mistakes made during installation. Inefficient windows can negatively affect your home’s appeal, value and energy efficiency. They can make it difficult for you to sell your home and even cause your energy bills to increase. Keep in mind that windows are only as good as how they were installed. 

When you choose an authorized Renewal by Andersen installer for your window replacement project, you will gain access to a two-year warranty for installation. Should your replacement doors and windows fail to perform according to our specifications due to poor installation, we will do the necessary repairs at no cost to you. 

What’s the Significance of Window Warranties?

Warranties serve as a guarantee from manufacturers and contractors that their product or service meets specific standards. If their product or service fails to achieve that standard, you as the consumer have the right to request repairs or replacement. With window warranties, you will have peace of mind knowing that if an issue occurs, the manufacturer or installer will address it. 

Whether you are getting new sliding doors or windows, you must hire a professional who carries comprehensive warranties. Keep in mind that the stronger the coverage a contractor is offering, the more confident they are about their workmanship and products. 

Keep in Mind that Not All Warranties Are the Same

The inclusions and exclusions of window warranties vary by manufacturer and contractor. Some providers offer lifetime warranties while others have limited lifetime warranties. Some warranties only stay valid for a certain time. 

Some contractors only cover the hardware of the windows, but not their frame or glass. Make sure to read the warranty terms and coverage before signing anything. You can also ask your prospective contractor about their warranties limitations, transferability, inclusions and exclusions. If your windows encounter problems, how quickly can they repair or replace the units while under warranty? You must also know the duration of the coverage and what can cause it to lose validity. 

At Renewal by Andersen of Nashville, our replacement windows are protected by some of the strongest warranties in the industry. Aside from energy-efficient windows, we also install high-quality French and sliding doors. Call us at (866) 609-5033, or fill out our contact form to schedule a free consultation. We serve clients in Nashville, TN, and nearby areas.

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