U-FactorsHigh Performance Systems | 15
All results were researched and found on the National Fenestration Rat-ing Council’s (NFRC) web site, www.nfrc.org, and are part of the public access information recorded on the site’s Certified Products Direc-tory. Overall Residential U-Factor Ratings for Paradigm Double Hung windows are in accordance with NFRC 400/ASTM E283 procedure for determining fenestration product U-Factor.
A lower U-Factor means the less
heat and energy you will lose
through your windows.
.20
.53
.40 .39 .34 .28
PellaDesigner Series Double Hung with Low-E HGP Insulated Glass
Renewalby AndersenDouble Hungwith HP4Insulated Glass
PVC DoubleHung window with High Performance Low-E and Argon Insulated Glass
ParadigmDouble Hung with C270 Insulated Glass
PVC Double Hung window with Dual Pane Insulated Glass
ParadigmDouble Hung with TC270 Insulated Glass
Residential U-Factor Ratings
Double Hung
Slider
Casement
Picture Window
Window Type U-Factor SHGC
0.28
0.28
0.27
0.27
0.28
0.28
0.25
0.25
C270 Insulated Glass System
AAMA/WDMA/CSA 101/I.S.2/A440-05 & 08 2013
Double Hung
Slider
Casement
Picture Window
Window Type U-Factor SHGC
0.20
0.20
0.20
0.20
0.24
0.24
0.22
0.22
TC270 Insulated Glass System
AAMA/WDMA/CSA 101/I.S.2/A440-05 & 08 2013
C270 Insulated Glass System
A 3/4" overall dual glazed insulated glass unit featuring
our exclusive C270™ glass, the Duralite™ spacer system,
and an air space filled with high density argon gas. The
C270™ coating structure is composed of eight layers of
high performance reflective metallic shields.
TC270 Insulated Glass System
A 3/4" overall triple glazed insulated glass unit made up
of two panes of C270™ glass and one pane of sound
absorbing glass. Complete with the Duralite™ spacer
system and two chambers filled with high density
krypton gas.
With a constant 25 mile per hour wind, this test shows how many cubic feet of air infiltrate through each square foot of the window each minute. Results are from Pella Product Guide Specification 2008, and Andersen 2009 Performance Standards. Paradigm AAMA Certified 2013.
A lower air infiltration rate blocks out
more drafts and is better in performance.
.04
.70
.30 .30
.20 .14
Maximum Allowable Air Infiltration Rate Suitable for Residential Construction
Competitor’s Vinyl Double Hung
Pella Proline and Designer Series Double Hung
Andersen 400 Series Woodwright Double Hung
Typical Existing Window
ParadigmDouble Hung Window
Air Infiltration Ratings
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