PERFORMANCE RATINGS
ENERGY STAR PROGRAM
ENERGY RATINGS
ER U-VALUE S.H.G.C ZONES


Casement

Awning

Fixed Casement

Fixed Picture

Double Hung

Double Slider

Single Hung

Single Slider

 


CAS-VC

AWN

HPF

LPF

DHT

DST

SHT

SST

 


A3

A3

Fixed

Fixed

A2

A2

A2/F

A2/F


B7

B7

B7

B7

B4

B3

B3

B3


C5

C5

C5

C5

C3

C3

C4

C4


F10

F10

-

-

-

-

-

-


\/

\/

\/

\/

\/

\/

\/

\/


\/

\/

\/

\/

\/

\/

\/

\/


+33

+33

+25

+32

+25

+25

+25

+25


1.18

1.18

1.49

1.44

1.58

1.59

1.60

1.60


0.33

0.33

0.30

0.40

0.36

0.36

0.37

0.37


ABCD

ABCD

ABC

ABC

ABC

ABC

ABC

ABC


Casement

Single Hung

Single Slider

 


C

SH

SS


A3

A2/F

A2/F


B7

B3

B2


C5

C2

C2


F10

F10

F10


\/

\/

\/


\/

\/

\/


+23

+25

+26


1.57

1.64

1.63


0.30

0.39

0.40


ABC

ABC

ABC

Energy Efficiency Values

* U = U-value (W/m2 - K) - The lower the number, the more energy efficient the product.

* SHGC = Solor Heat Gain Coefficient - The higher the number, the higher the solar gain.

* ER = Energy Rating (W/m2 or dimensionless) - The higher the number, the more energy efficient the product.

* The ER (Energy Rating) format was changed to all positive numbers (dimensionless) in October 2004 by CSA (Canadian Standards Association) to address consumer confusion over negative numbers. The older format had a mixture of negative and positive numbers (W/m2).

 
   
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