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The Worthington Window Partnership.
Manufactured, furnished, and installed by the Partnership between Illinois Energy and the window factory, Lindsay, that
has produced quality windows since 1947. Worthington Windows are built and installed with the highest commitment
towards quality, beauty, ease of maintenance, performance, and customer care, exclusively for Illinois Energy customers
in Illinois.
Superior Energy Performance and Value
Beginning with a lot of effort and commitment to Research and Development, the Worthington Windows are
manufactured with focus on Value, through energy savings payback, lack of maintenance, and sharp looks. With the
huge increases in heating and cooling homes, our Custom Designed Process accomodates Illinois' drastic weather
changes. We have installed over 100,000 windows over the years and have saved Chicagoland homeowners over
$15,000,000 in energy savings alone.
Quadraseal
The worlds most advanced and durable thermal insulating sealing system
through years of development, the Worthington Window?s Quadraseal provides
the highest energy savings, performance, and durability. With the Quadraseal
there is no metal. This gives the Worthington Window a 100% guarantee against
seal failure, period. This allows your windows to perform at the highest level of
energy efficiency, giving you the largest return on your investment. Never a seal
failure like most other windows. (Almost all other thermal windows, including many of the largest manufacturers, seals
typically fail between 6-12 years due to conducting metal spacers.)
We also have available energy effi cient vinyl sliding patio doors. Contact us for a free estimate or for more information. 
