NFRC Information

NFRC Data for Minnkota Windows and Doors

NFRC Information

NFRC Ratings

The table below illustrates the NFRC data for Minnkota Windows and Doors.  The following terms are used in NFRC data and are defined as follows:

U-Factor: Rate of heat loss.  The lower the U-Factor, the greater a window's resistance to heat flow and the better its insulating properties.

SHGC (Solar Heat Gain Coefficient): The fraction of incident solar radiation admitted through a window.  It's expressed as a number between 0 and 1.  The lower the SHGC, the less solar heat it transmits.

VT (Visible Transmittance): An optical property that indicates the fraction of visible light transmitted through the window.  The lower the number, the greater amount of "tint" appearing in the glass.

AI (Air Infiltration): The unintentional, or accidental, introduction of outside air into a building, typically through cracks in the building envelope and through use of doors for passage.  Also known as air leakage.  Number given is a measurement of cubic feet per minute by square feet.

 


Awning Window
  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.26 0.26 0.25 0.21 0.17
SHGC  0.40 0.26 0.17 0.24 0.22
VT  0.48 0.44 0.39 0.40 0.35
AI  .01 .01 .01 .01 .01

Casement Window

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.26 0.26 0.25 0.21 0.17
SHGC  0.40 0.26 0.17 0.24 0.22
VT  0.48 0.44 0.39 0.40 0.35
AI  .04 .04 .04 .04 .04
 

Double Hung Window

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.29 0.29 0.28 0.25 0.21
SHGC  0.48 0.31 0.21 0.29 0.26
VT  0.59 0.53 0.48 0.49 0.43
AI  .12 .12 .12 .12 .12
 

Double Slider Window

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.30 0.29 0.29 0.26 0.22
SHGC  0.49 0.32 0.21 0.30 0.27
VT  0.60 0.55 0.49 0.50 0.44
AI  .04 .04 .04 .04 .04
 

Picture Window (Non-Operating)

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.27 0.22 0.22 0.21 0.16
SHGC  0.48 0.31 0.20 0.29 0.27
VT  0.59 0.52 0.47 0.49 0.43
AI  .01 .01 .01 .01 .01
 

Sliding Patio Door

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.30 0.29 0.29 0.26 0.22
SHGC  0.50 0.32 0.21 0.30 0.27
VT  0.61 0.55 0.50 0.50 0.44
AI  .16 .16 .16 .16 .16
 

Single Hung Window

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
U-Factor  0.30 0.29 0.29
SHGC  0.51 0.33 0.22
VT  0.63 0.57 0.51
AI  .12 .12 .12
 

Single Slider Window

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
U-Factor  0.30 0.29 0.29
SHGC  0.52 0.33 0.22
VT  0.63 0.57 0.52
AI  .08 .08 .08
 

Euro Series Window

  Dual Pane
Lo-E 180
Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.28 0.27 0.27 0.22 0.18
SHGC  0.44 0.28 0.19 0.26 0.24
VT  0.53 0.48 0.43 0.44 0.38
AI  ..02 .02 .02 .02 .02
 

Euro Series Door

  Dual Pane
Lo-E 272
Dual Pane
Lo-E 366
Triple Pane
Lo-E 272
Triple Pane
Double Lo-E 272
U-Factor  0.30 0.30 0.25 0.22
SHGC  0.25 0.17 0.23 0.21
VT  0.42 0.37 0.38 0.33
AI  .04 .04 .04 .04

* All ratings based on testing with Endur spacer, 3mm glass and Argon
* Lo-E is on surface #2 of all units
* Lo-E is on surface #2 and #5 of all double Lo-E triple pane units

 


Energy Efficient Window & Door Performance Criteria

Climate Zone U-Factor SHGC
Northern </= 0.27 Any
= 0.28 </= 0.32
= 0.29 </= 0.37
= 0.30 </= 0.42
North Central </= 0.30 </= 0.40
South Central </= 0.30 </= 0.25
Southern </= 0.40 </= 0.25


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