Tax Credits for Energy Efficient
Windows and Doors


If you had windows or doors installed last year (no later than December 31, 2017) you may qualify for a federal tax credit - up to $200 for windows alone, with a maximum of $500 if doors are included!


More information is available from the Department of Energy here and here.


You can obtain the updated IRS forms here.




Thermal Windows that Qualify for Federal Tax Credits



SeriesDescription
6600, 6603, 6640 and 6643 Single Hung Vinyl WindowsDual Glazed, with TS28, Argon gas and Superspacer
6800 and 6840 Double Hung Vinyl WindowsDual Glazed, with TS28, Argon gas and Superspacer
6625 Single Horizontal Rolling Vinyl WindowsDual Glazed, with TS28, Argon gas and Superspacer
6630 XOX Horizontal Rolling Vinyl WindowsDual Glazed, with TS28, Argon gas and Superspacer
6825 Double Horizontal Rolling Vinyl WindowsDual Glazed, with TS28, Argon gas and Superspacer
6850 and 6852 Vinyl Picture Windows
(Also Series 6880, 6881, 6882, 6883, 6884 Vinyl Specialty Windows)
Dual Glazed, with TS28, Argon gas and Superspacer

Download our Manufacturer's Certification


Download Therma-Tru's list of qualified products (2.2meg pdf)


Download Therma-Tru Doors Manufacturer's Certification


Note: Storm Doors do not qualify




Energy Star determines whether products qualify for tax credits. The Energy Star zone map and criteria are shown below.

Energy Star Zone Map

.  .  .  .  .  .  .








(This page last updated 3/19/2018)

Schedule a
Free Estimate

*=required
 Contact me by:
    Email     Phone


Thermal Windows, Inc, Windows, Tulsa, OK
Tulsa World Best in the World medallion
Credit cards we accept

Financing available through