Energy Cost savings

slothropOctober 6, 2013

I live in Southern California and we are looking at replacement windows - either aluminum or fiberglass. Obviously the fiberglass would be much more energy efficient but I was wondering how to calculate the cost savings based on the numbers. For example - Milgard Ultra with a U-factor of .35 and a SHGC of .27 vs. the aluminum with a U-factor of .56 and a SHGC of .29. What kind of savings would I be looking at - especially since I am somewhat close to the coast and don't often have to run the a/c or heat. Thanks!

Thank you for reporting this comment. Undo
Windows on Washington Ltd

Nearly impossible to say without some very specific and exhaustive data on the home, climate, construction, utilities, etc, etc.

The air infiltration of the two units plays into this equation as well.

Sorry...but there is just no simple answer.

Will the more efficient unit save you more money (provided they have similar air leakage rates)...yes. How much is totally dependent on the home.

    Bookmark   October 7, 2013 at 6:05AM
Thank you for reporting this comment. Undo

Very difficult to quantify. Of course if will make a difference..
Why are you looking at windows with a ufactor of .35 ? That is much too high and not very energy efficient. You need something lower than a .30 at least.

    Bookmark   October 7, 2013 at 8:17AM
Sign Up to comment
More Discussions
Marvin Ultimate double hung or casement
I am replacing some rotting windows and am installing...
Okna vs. Simonton for bow window
Hi, I'm hoping someone can provide some insights with...
Remove window film immediately?
My contractor has been installing my new Anderson Woodwright...
pulley and weight window stuck open
I cannot get it closed even though I basically hang...
Sunrise, Marvin, and window shopping woes
Hello, I am looking for some advice. Briefly, we live...
Sponsored Products
Corydon Bronze TDL LED Outdoor Wall Lantern
$258.00 | Bellacor
School of Fish Glass Wine Carafe
Classic Hostess
Vondom | Pillow Puff Illuminated
Broadway Slim Suspension by James R. Moder
$598.00 | Lumens
Mobile Computer Desk Cart
George Kovacs Brushed Nickel Dome LED Desk Lamp
Euro Style Lighting
Fanimation | Enigma Ceiling Fan
Juno ENERGY STAR ICPL 613E Fluorescent Housing
$81.99 | Lamps Plus
© 2015 Houzz Inc. Houzz® The new way to design your home™