Maintained by Juan Valles, co-owner, Energy Shield Window & Door Company. Last updated October 29, 2026.
This dataset lists the NFRC-certified U-factor, SHGC, visible transmittance, and condensation resistance of Energy Shield's vinyl windows and sliding glass doors. It has 8 rows: the picture window, single hung, and horizontal slider, each with Cardinal LoE³-340+ and LoE³-366 glass (the same ratings for both the ES3000 and ES7000 series), and two sliding glass doors with LoE³-366 glass. All are whole-window ratings. Glass: Cardinal LoE³-340+ (with an LoE-i89 inner pane) or LoE³-366, argon, double-strength 3 mm glass.
Download: energy-shield-window-performance-ratings.csv (CC BY 4.0: free to reuse with credit to Energy Shield Window & Door Company).
Source: NFRC Certified Products Directory.
| Series | Type | Glass | U-factor | SHGC | Visible light | Condensation resistance | SHGC with grids | Under the 0.25 maximum by | NFRC CPD number |
|---|---|---|---|---|---|---|---|---|---|
| ES3000 and ES7000 | Picture window | LoE³-340+ | 0.21 | 0.16 | 0.34 | 47 | 0.14 | 0.09 | CDA-M-14-02042-00001 |
| ES3000 and ES7000 | Picture window | LoE³-366 | 0.25 | 0.25 | 0.58 | 59 | 0.22 | 0.00 | CDA-M-14-01989-00001 |
| ES3000 and ES7000 | Single hung | LoE³-340+ | 0.24 | 0.14 | 0.31 | 47 | 0.13 | 0.11 | CDA-M-15-05670-00001 |
| ES3000 and ES7000 | Single hung | LoE³-366 | 0.28 | 0.22 | 0.52 | 59 | 0.20 | 0.03 | CDA-M-15-05617-00001 |
| ES3000 and ES7000 | Horizontal slider | LoE³-340+ | 0.24 | 0.14 | 0.31 | 48 | 0.13 | 0.11 | CDA-M-17-05670-00001 |
| ES3000 and ES7000 | Horizontal slider | LoE³-366 | 0.28 | 0.22 | 0.52 | 59 | 0.20 | 0.03 | CDA-M-17-05617-00001 |
| 3800 patio door | Sliding glass door | LoE³-366 | 0.27 | 0.23 | 0.53 | 59 | 0.20 | 0.02 | CDA-M-21-00253-00001 |
| 5800 patio door | Sliding glass door | LoE³-366 | 0.29 | 0.19 | 0.44 | 59 | 0.17 | 0.06 | CDA-M-21-00791-00001 |
Columns
| Column | Meaning |
|---|---|
| series | ES3000 and ES7000 (windows; both series share these ratings), or the sliding glass door (3800, 5800) |
| product_type | Picture window, single hung, horizontal slider, or sliding glass door |
| frame_material | Vinyl |
| glass_package | Cardinal LoE³-340+ or Cardinal LoE³-366 |
| glazing | Insulating glass unit build: dual pane, 90% argon, LoE-i89 inner pane (LoE³-340+) or clear inner pane (LoE³-366), double-strength 3 mm glass |
| u_factor | Whole-window heat flow, Btu/h·ft²·°F, no grids. Lower is better. |
| shgc | Whole-window solar heat gain coefficient, 0 to 1, no grids. Lower lets in less solar heat. |
| visible_transmittance | Whole-window share of visible light let through, 0 to 1, no grids |
| condensation_resistance | 1 to 100, higher is better |
| u_factor_with_grids, shgc_with_grids, visible_transmittance_with_grids | The same ratings with grids between the panes |
| shgc_under_0.25_maximum_by | 0.25 minus the SHGC (no grids): how far the row sits under the IECC maximum for climate zones 0 to 3 (Phoenix metro: 2B) |
| nfrc_cpd_number | The row's NFRC Certified Products Directory number |
| source | NFRC Certified Products Directory |
The glass alone
Cardinal rates LoE³-340+ glass by itself (center-of-glass, dual pane with an LoE-i89 inner pane and argon) at an SHGC of 0.17, a U-factor of 0.20, 38% visible light, and 2% UV. Those numbers leave out the frame and the glass edge, so they are not the whole-window values in this table. For sound, the glass is rated STC 31 / OITC 26 (3 mm glass, about 1/2-inch air space).
How to read it against the code
See our page on solar heat gain in Phoenix for what the 0.25 maximum is, where it applies, and how ENERGY STAR's stricter 0.23 compares.
Change log
- October 29, 2026: first release, 8 rows, NFRC-certified ratings.
