I pulled their nfrc data 0 and found this test result for a 400 series casement w out grill with passivesun lowe4.
Andersen windows 400 series u factor.
Learn why contractors trust andersen 400 series windows more than any other.
In fact andersen has been part of the energy star program since it started and was the first window manufacturer to be named an energy star national window partner of the year in 1999.
Anyone know what technology andersen is using in what they call passivesun heatlock or lowe4.
These are available as options to some of their windows even the double pane 400 series.
For over 100 years andersen has built a reputation for environmental stewardship and energy efficient products.
Architect builder remodeler.
400 series windows doors time tested classic wood craftsmanship as our most popular series with our longest standing products the 400 series brings you the best overall blend of performance and style to satisfy just about any window or door need.
U factor how well a product prevents heat from escaping.
The sash tilt in for easy cleaning from the inside of your home.
If windows are double pane savings estimates range between 27 197 per year.
400 series double hung windows have two operating sash that move up and down allowing for ventilation on the top bottom or both.
Made of wood protected by a vinyl exterior it s our best selling double hung window.
If windows are single pane an estimated savings for energy star certified windows is between 101 583 per year.
U factor 29 shgc 52 i ve tried comparing this nfrc data with marvin s 1 but.
Products that use low e4 and low e glass include certain 200 series fixed units and tilt windows 400 series gliding windows roof windows and skylights and several models of andersen architectural window.
Actual savings will vary based on local climate conditions window type single double pane frame material utility rates and individual home.