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1. COMPARE WINDOW RATINGS!
All windows are rated for performance. The NFRC label
measures the "U-Value"
of a window. The lower the number, the better the window performs.
While an Energy Star Rating for windows in the west is .35, a number
lower than that is preferred. Once upon a time, window manufacturers rated
their own windows and the U-values they claimed were greatly exaggerated
in many cases. Because the practice was wide spread, independent rating
became a necessity to bring accurate U-value claims to the public.
Today, there are still companies making claims that are not backed
up by independent posted NFRC Labels!
2. MAKE SURE WINDOWS ARE CERTIFIED
All windows are required to be rated by an independent
rating service such as the NFRC and AAMA to file for things like energy
tax credits. If a window does not display the NFRC "U-Value"
rating, one should be very suspect of the window company's claims.
If a window does not display the gold AAMA sticker it has not been
certified. These stickers MUST BE DISPLAYED ON THE WINDOWS AT THE TIME
OF INSTALLATION. The Gold AAMA label is there to prove that the window
has been tested for structural integrity. If the gold sticker isn't
on the window, one may well assume the window has not passed stringent
testing.
3. MAKE SURE WINDOWS ARE REPLACEMENT
WINDOWS
Most windows are not designed to be replacement windows, they are in
fact designed for new construction applications. Specialty
window manufacturers make windows with approximately 2 3/4 inch frames
designed to replace old, thin aluminum frames, and work well with homes
constructed with 2"x 4" Framing. When you try to install
a 3 1/4" or larger framed window into an opening that was designed
for an aluminum framed window, the window protrudes way out from the
outer wall and, if it isn't supported by a wood trim, will likely lead
to premature window failure.
4. CHECK OUT THE WARRANTY
Many window companies have lots of exclusions. The old saying is, "The
big print giveth, and the small print taketh away!" There are warranty
exclusions for weather, being within 2 miles of salt water, cleaning
glass with ammonia based cleaners (eg: Windex), etc. Before spending
your hard-earned money, read the warranties.
5. CHECK OUT THE COMPANY
When purchasing replacement windows, do some research
on the company chosen to install them. One of the best and most common
searches is to check with the Better Business
Bureau in your area.
If the installation company has a web site they should have a direct
link to the BBB on their site for you to research them. If you want
to check further on a company, resources like Angie's
List are great
- unfortunately, they require a fee for their services. If you still
haven't researched the company enough, you can go to sites like RipOffReport.com to
see if complaints have been filed.

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