目次
- EA Credit: Optimize Energy Performance is worth up to 18 points, scored from the ASHRAE 90.1 energy model (split since 2024 into 9 points energy efficiency + 9 points GHG). A high-effectiveness recovery core lowers the heating and cooling loads in that model, directly raising the percentage improvement over baseline. EA Prerequisite: Minimum Energy Performance is the gate — and 90.1’s recovery rule (see ASHRAE 90.1 requirements) is part of that baseline.
- Area v4.1 v5 Enhanced Energy Efficiency credit up to 18 pts 1–10 pts, prescriptive path on ASHRAE 90.1-2022 §11 Electrification credit none new (favors heat pumps over combustion) Reduce Peak Thermal Loads none new — ventilation energy recovery is an explicit measure Required standard 90.1-2019/2022 90.1-2022 required after 1 Jan 2028
- Model the building with and without the recovery core; the delta is your saving. For v5, count recovery under both the Enhanced Energy Efficiency prescriptive measures and the new Peak Thermal Loads credit. Pair recovery with a high-efficiency heat pump or high-temperature heat pump to support the Electrification credit and cut on-site combustion. Because v5 rewards decarbonization over cost, an electrically driven recovery-plus-heat-pump strategy scores better than a gas-fired reheat baseline. Document the modeled effectiveness using the recognized test standards.
Energy recovery contributes to the Energy & Atmosphere (EA) credits that dominate LEED scoring. Whether you register under LEED v4.1 (still open in 2026) or the newer LEED v5 (2025–2030 cycle), ventilation recovery reduces the modeled energy use that the credit is scored on.
- EA Credit: Optimize Energy Performance is worth up to 18 points, scored from the ASHRAE 90.1 energy model (split since 2024 into 9 points energy efficiency + 9 points GHG).
- A high-effectiveness recovery core lowers the heating and cooling loads in that model, directly raising the percentage improvement over baseline.
- EA Prerequisite: Minimum Energy Performance is the gate — and 90.1’s recovery rule (see ASHRAE 90.1 requirements) is part of that baseline.
| Area | v4.1 | v5 |
|---|---|---|
| Enhanced Energy Efficiency credit | up to 18 pts | 1–10 pts, prescriptive path on ASHRAE 90.1-2022 §11 |
| Electrification credit | none | new (favors heat pumps over combustion) |
| Reduce Peak Thermal Loads | none | new — ventilation energy recovery is an explicit measure |
| Required standard | 90.1-2019/2022 | 90.1-2022 required after 1 Jan 2028 |
- Model the building with and without the recovery core; the delta is your saving.
- For v5, count recovery under both the Enhanced Energy Efficiency prescriptive measures and the new Peak Thermal Loads credit.
- Pair recovery with a high-efficiency heat pump または high-temperature heat pump to support the Electrification credit and cut on-site combustion.
Because v5 rewards decarbonization over cost, an electrically driven recovery-plus-heat-pump strategy scores better than a gas-fired reheat baseline. Document the modeled effectiveness using the recognized test standards.