Energy Performance Ratings

The following NFRC ratings are summaries for WeatherBarr products with grid. For the complete detailed NFRC ratings for each series click the PDF link next to the series name.

New Construction Windows

• Cornerstone Series
• 270 Series
• 730 Series
• 4000 Series

Replacement Windows

• 570 Series
• Legacy Series
• Restoration Series
• Restoration Advantage Series
• 5000 Series

To be labeled as an ENERGY STAR product, the U-factor and SHGC (Solar Heat Gain Coefficient) ratings must be less than or equal to those established by ENERGY STAR. The following is the ENERGY STAR criteria established in 2010:

Cornerstone Series

Download a PDF of the complete detailed Cornerstone Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Single Hung
Energy Smart I	0.30	0.30	55	N, NC, SC
Energy Smart II	0.29	0.30	59	N, NC, SC
Energy Smart III	0.24	0.25	66	N, NC, SC, S
Solar Smart I	0.30	0.22	55	N, NC, SC, S
Solar Smart II	0.28	0.22	59	N, NC, SC, S
Solar Smart III	0.23	0.19	67	N, NC, SC, S
Double Hung
Energy Smart I	0.31	0.29	56	N, NC, SC
Energy Smart II	0.29	0.29	60	N, NC, SC
Energy Smart III	0.23	0.25	65	N, NC, SC, S
Solar Smart I	0.30	0.22	55	N, NC, SC, S
Solar Smart II	0.29	0.22	61	N, NC, SC, S
Solar Smart III	0.23	0.19	65	N, NC, SC, S
Horizontal Slider
Energy Smart I	0.30	0.30	55	N, NC, SC
Energy Smart II	0.28	0.30	60	N, NC, SC
Energy Smart III	0.22	0.26	67	N, NC, SC, S
Solar Smart I	0.29	0.22	56	N, NC, SC, S
Solar Smart II	0.28	0.22	60	N, NC, SC, S
Solar Smart III	0.22	0.20	67	N, NC, SC, S
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Energy Smart I	0.28	0.31	58	N, NC, SC
Energy Smart II	0.27	0.31	61	N, NC, SC
Energy Smart III	0.21	0.27	67	N, NC, SC, S
Solar Smart I	0.28	0.23	58	N, NC, SC, S
Solar Smart II	0.27	0.23	61	N, NC, SC, S
Solar Smart III	0.21	0.20	67	N, NC, SC, S

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270 Series

Download a PDF of the complete detailed 270 Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Single Hung
Energy Smart I	0.32	0.29	56	NC, SC
Energy Smart II	0.31	0.29	59	NC, SC
Solar Smart I	0.32	0.25	56	NC, SC, S
Solar Smart II	0.30	0.25	59	N, NC, SC, S
Single Slider
Energy Smart I	0.32	0.28	56	NC, SC
Energy Smart II	0.30	0.28	59	N, NC, SC
Solar Smart I	0.31	0.24	56	NC, SC, S
Solar Smart II	0.3	0.24	59	N, NC, SC, S
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Energy Smart I	0.30	0.30	56	N, NC, SC
Energy Smart II	0.30	0.30	59	N, NC, SC
Solar Smart I	0.30	0.26	56	N, NC, SC, S
Solar Smart II	0.29	0.26	59	N, NC, SC, S

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730 Series

Download a PDF of the complete detailed 730 Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Double Hung
Energy Smart I	0.31	0.28	56	NC, SC
Energy Smart II	0.30	0.28	56	N, NC, SC
Energy Smart III	0.24	0.24	65	N, NC, SC, S
Solar Smart I	0.31	0.24	56	NC, SC, S
Solar Smart II	0.29	0.24	59	N, NC, SC, S
Solar Smart III	0.24	0.20	65	N, NC, SC, S
Double Slider
Energy Smart I	0.30	0.27	56	N, NC, SC, S
Energy Smart II	0.29	0.27	61	N, NC, SC, S
Energy Smart III	0.23	0.24	67	N, NC, SC, S
Solar Smart I	0.30	0.24	56	N, NC, SC, S
Solar Smart II	0.29	0.24	61	N, NC, SC, S
Solar Smart III	0.23	0.20	67	N, NC, SC, S
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Energy Smart I	0.27	0.32	59	N, NC, SC
Energy Smart II	0.27	0.32	61	N, NC, SC
Energy Smart III	0.22	0.28	68	N, NC, SC
Solar Smart I	0.27	0.28	60	N, NC, SC
Solar Smart II	0.26	0.28	62	N, NC, SC
Solar Smart III	0.22	0.24	69	N, NC, SC, S

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4000 Series

Download a PDF of the complete detailed 4000 Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Casement
Energy Smart I	0.29	0.24	60	N, NC, SC, S
Energy Smart II	0.28	0.24	63	N, NC, SC, S
Solar Smart I	0.29	0.21	60	N, NC, SC, S
Solar Smart II	0.28	0.21	63	N, NC, SC, S
Awning
Energy Smart I	0.29	0.24	60	N, NC, SC, S
Energy Smart II	0.28	0.24	63	N, NC, SC, S
Solar Smart I	0.29	0.21	60	N, NC, SC, S
Solar Smart II	0.28	0.21	63	N, NC, SC, S
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Energy Smart I	0.27	0.28	59	N, NC, SC
Energy Smart II	0.26	0.28	61	N, NC, SC, S
Solar Smart I	0.27	0.25	59	N, NC, SC, S
Solar Smart II	0.26	0.25	62	N, NC, SC, S

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570 Series

Download a PDF of the complete detailed 570 Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Single Hung
Energy Smart I	0.32	0.29	56	NC, SC
Energy Smart II	0.31	0.29	59	NC, SC
Solar Smart I	0.32	0.25	56	NC, SC, S
Solar Smart II	0.30	0.25	59	N, NC, SC, S
Single Slider
Energy Smart I	0.32	0.28	56	NC, SC
Energy Smart II	0.30	0.28	59	N, NC, SC
Solar Smart I	0.31	0.24	56	NC, SC, S
Solar Smart II	0.3	0.24	59	N, NC, SC, S
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Energy Smart I	0.30	0.30	56	N, NC, SC
Energy Smart II	0.30	0.30	59	N, NC, SC
Solar Smart I	0.30	0.26	56	N, NC, SC, S
Solar Smart II	0.29	0.26	59	N, NC, SC, S

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Legacy Series

Download a PDF of the complete detailed LEGACY Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Double Hung
Energy Smart I	0.31	0.28	56	NC, SC
Energy Smart II	0.30	0.28	56	N, NC, SC
Energy Smart III	0.24	0.24	65	N, NC, SC, S
Solar Smart I	0.31	0.24	56	NC, SC, S
Solar Smart II	0.29	0.24	60	N, NC, SC, S
Solar Smart III	0.24	0.20	65	N, NC, SC, S
Double Slider
Energy Smart I	0.30	0.27	56	N, NC, SC, S
Energy Smart II	0.29	0.27	60	N, NC, SC, S
Energy Smart III	0.23	0.24	67	N, NC, SC, S
Solar Smart I	0.30	0.24	57	N, NC, SC, S
Solar Smart II	0.29	0.24	61	N, NC, SC, S
Solar Smart III	0.23	0.20	67	N, NC, SC, S
Picture Window
Energy Smart I	0.28	0.30	57	N, NC, SC
Energy Smart II	0.27	0.30	59	N, NC, SC
Energy Smart III	0.21	0.26	67	N, NC, SC, S
Solar Smart I	0.27	0.26	57	N, NC, SC, S
Solar Smart II	0.27	0.26	59	N, NC, SC, S
Solar Smart III	0.20	0.22	68	N, NC, SC, S

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Restoration Series

Download a PDF of the complete detailed RESTORATION Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Double Hung
Energy Smart I	0.31	0.28	56	NC, SC
Energy Smart II	0.30	0.28	60	N, NC, SC
Energy Smart III	0.24	0.24	65	N, NC, SC, S
Solar Smart I	0.31	0.24	56	NC, SC, S
Solar Smart II	0.29	0.24	60	N, NC, SC, S
Solar Smart III	0.24	0.20	65	N, NC, SC, S
Double Slider
Energy Smart I	0.30	0.27	56	N, NC, SC, S
Energy Smart II	0.29	0.27	60	N, NC, SC, S
Energy Smart III	0.23	0.24	67	N, NC, SC, S
Solar Smart I	0.30	0.24	57	N, NC, SC, S
Solar Smart II	0.29	0.24	61	N, NC, SC, S
Solar Smart III	0.23	0.20	67	N, NC, SC, S
Picture Window
Energy Smart I	0.28	0.30	57	N, NC, SC
Energy Smart II	0.27	0.30	59	N, NC, SC
Energy Smart III	0.21	0.26	67	N, NC, SC, S
Solar Smart I	0.27	0.26	57	N, NC, SC, S
Solar Smart II	0.27	0.26	59	N, NC, SC, S
Solar Smart III	0.20	0.22	68	N, NC, SC, S

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Restoration Advantage Series

Download a PDF of the complete detailed Restoration Advantage Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Double Hung
Energy Smart I	0.28	0.27	56	N, NC, SC, S
Energy Smart II	0.27	0.27	60	N, NC, SC, S
Energy Smart III	0.21	0.24	68	N, NC, SC, S
Solar Smart I	0.28	0.23	56	N, NC, SC, S
Solar Smart II	0.27	0.23	60	N, NC, SC, S
Solar Smart III	0.21	0.20	68	N, NC, SC, S
Double Slider
Energy Smart I	0.29	0.27	56	N, NC, SC, S
Energy Smart II	0.27	0.27	61	N, NC, SC, S
Energy Smart III	0.21	0.24	67	N, NC, SC, S
Solar Smart I	0.28	0.24	56	N, NC, SC, S
Solar Smart II	0.27	0.24	61	N, NC, SC, S
Solar Smart III	0.21	0.24	67	N, NC, SC, S
Picture Window
Energy Smart III	0.19	0.26	69	N, NC, SC, S
Solar Smart III	0.19	0.22	69	N, NC, SC, S

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5000 Series

Download a PDF of the complete detailed 5000 Series NFRC ratings here.

	U-Value	SHGC	Condensation Resistance
Casement
Energy Smart I	0.29	0.24	60	N, NC, SC, S
Energy Smart II	0.28	0.24	63	N, NC, SC, S
Solar Smart I	0.29	0.21	60	N, NC, SC, S
Solar Smart II	0.28	0.21	63	N, NC, SC, S
Awning
Energy Smart I	0.29	0.24	60	N, NC, SC, S
Energy Smart II	0.28	0.24	63	N, NC, SC, S
Solar Smart I	0.29	0.21	60	N, NC, SC, S
Solar Smart II	0.28	0.21	63	N, NC, SC, S
Picture Window
Energy Smart I	0.28	0.28	59	N, NC, SC, S
Energy Smart II	0.28	0.28	61	N, NC, SC, S
Solar Smart I	0.28	0.25	59	N, NC, SC, S
Solar Smart II	0.27	0.22	61	N, NC, SC, S

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