The 2020 New York State Energy Conservation Code is based on the 2018 International Energy Conservation Code (IECC) and ASHRAE 90.1-2016 - as modified by the State of New York. The 2020 NYCECC further amends the 2020 NYSECCC to address the unique and dense construction environment of New York City and to align with the New York State Energy Research and Development Authority’s NYStretch Energy Code-2020 as per Section 28-1001.3.3 of the Administrative Code. According to the section C406.7 of the New York City Energy Conservation Code, different buildings are classified as follows:

  1. Group R-1: Boarding houses, hotels or motels.

  2. Group I-2: Hospitals, psychiatric hospitals and nursing homes.

  3. Group A-2: Restaurants and banquet halls or buildings containing food preparation areas.

  4. Group F: Laundries.

  5. Group R-2: Buildings with residential occupancies.

  6. Group A-3: Health clubs and spas.

Following are the few key amendments for prescriptive inputs used in cove.tool:


Source (2020 NYCECC)

1. Wall U-values

Table C402.1.4

2. Roof U-values

Table C402.1.4

3. Window U-values and SHGC

Table C402.4

4. Skylights U-value and SHGC

Table C402.4

5. Lighting Power Density

Table C405.3.2(1)

Cove.tool Assumptions (all engineering inputs can be easily edited by the user):

  1. Referring to the PNNL prototype models, the wood framed walls with attic roof is assumed for small office building and steel framed walls with insulation entirely above deck is assumed for all other commercial building types in cove.tool.

  2. The fixed framing windows are assumed for all building types.

  3. Window SHGC value is picked assuming the Projection Factor(PF) is less than 0.2.

Find out more about NYCECC here.

To achieve Local Law 97 requirements, see how 18 buildings achieved these targets as part of a scheduled renovation:

The link to the article-

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