WSEC-R 2021 Prescriptive Credits

Worksheet for the 2021 Washington State Energy Code — Residential single-family / townhouse prescriptive path (eff. March 15, 2024). Upload plan PDFs (energy code sheet, window schedule, mechanical) to auto-suggest credits, then confirm.

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Project

Address or lot

City

Permit #

Conditioned floor area (sf)

Fenestration area (sf)

Dwelling / addition class

Suggested class

Base envelope (Table R402.1.3): fenestration U-0.30 · skylight U-0.50 · ceiling R-60 · wood wall R-20+5ci or R-13+10ci · floor R-30 · below-grade 10/15/21 int +5 TB · slab R-10, 4 ft.

Table R406.2 — Fuel normalization (pick one)

Table R406.3 — Energy credits

1 · Efficient building envelope (one)

2 · Air leakage + efficient ventilation (one)

3 · High efficiency HVAC (one of 3.1–3.10)

4 · HVAC distribution

5 · Efficient water heating (5.1/5.2 stackable; one of 5.3–5.8)

6 · Renewable electric energy

Annual on-site wind/solar (kWh / housing unit)

0.5 credit per 600 kWh, max 4.5 (option 6.1).