Limited Residential Lifetime Warranty

R Value, Inc. doing business as Indow (“Indow”) provides this Limited Residential Warranty to purchasers who use the product in a non-commercial property, non income-generating purpose. Click here to view our Limited Commercial Warranty. Click here to view Indow warranty information for purchases prior to 1/1/15. Indow warrants its window inserts against defects of materials or workmanship as long as the purchaser continuously occupies the property for which the window insert was purchased. This warranty is not transferable.


Indow uses only the highest quality materials in the manufacture of our products. Indow warrants its clear acrylic glazing against a change in light transmission in excess of 3%. This warranty does not cover certain specialty grades that are not clear to start with (including Sleep Panels, Privacy and Shade Grades), our film product, nor clear acrylic glazing exposed to artificial light sources emitting intense amounts of UVB or higher energy radiation. The Indow compression material is made of silicone which resists the effects of heat, cold and ultraviolet exposure.


This warranty does not apply to any Indow window insert which has been subject to accident, acts of God, fire, flood, abuse or misuse, abuse by harmful fumes, vapors, solvents, chemicals or chemical pollutants in the atmosphere, mold, building settlement or structural failures of walls or foundations. We do not warrant our glazing against scratching or breakage which can occur if improperly handled, as listed in our Receiving & Handling Guide. This warranty does not apply to any Indow window insert that has been subject to operating temperatures exceeding 160 degrees Fahrenheit. We do not warrant our acrylic glazing against clouding, yellowing or loss of light transmission caused by dirt, scratching, breakage, or improper cleaning with ammonia or bleach-based cleaners, as listed in our Care Guide (see link below).


Condensation is not a product defect, but the result of excess humidity. Condensation, frost, or mold, mildew, or fungus on window surfaces is not covered by the Limited Warranty. Indow bears no responsibility or liability for any situation where molds or other associated conditions arise as a result of improper use, cleaning, sealing, humidification or ventilation.


Indow does not warrant its inserts against venting excess air pressure. It is part of an Indow insert’s normal function to occasionally relieve excess air pressure by ‘popping’ a corner or side in response to heavy external winds combined with extreme temperatures or a blower door test. Simply press the insert back into place to restore normal function.


Indow window inserts are not Window Opening Control Devices (WOCDs) and they are not intended as a substitute for careful supervision of children near windows. WOCDs, if installed on primary windows, must be tested at least monthly. Follow all safety information and instructions provided with WOCDs.

Indow will not pay for any incidental or consequential damages, and its liability under this warranty, or under any implied warranty, is limited to repairing or replacing (in its sole discretion) any part or parts of the window insert that are found to be defective under the terms of this warranty. We will endeavor to supply original replacement parts; however, replacement parts may differ from the original parts. Warranty repair or replacement of the Indow window insert is free of charge to you. In the case of improper cleaning, storage or maintenance, Indow will not be held responsible for any costs incurred in repairing or replacing any product under this warranty including, but not limited to, transportation costs, costs of removal, disposal, installation or reinstallation.

Approved care, cleaning, and installation instructions are available here.


If you discover a defect of materials or workmanship, please contact Indow. Upon providing proof of purchase (Indow in its sole discretion) will repair or replace your defective Indow window insert(s) or its components. This limited warranty is effective for products purchased on or after October 31, 2021.