N.Y. Comp. Codes R. & Regs. tit. 21 § 458.2
| Heating degree days | U-value |
| 5,000 | 0.05 |
| 6,000 | 0.04 |
| 7,000 | 0.04 |
| 8,000 | 0.03 |
| 9,000 | 0.03 |
The degree days to be used to determine the required U-value shall be those in Table 1.
| Heating degree days | Uo |
| 5,000 | 0.36 |
| 6,000 | 0.33 |
| 7,000 | 0.31 |
| 8,000 | 0.28 |
| 9,000 | 0.28 |
The degree days to be used to determine U o shall be those listed in Table 1.
| Heating degree days | U-value |
| 5,000 | 0.08 |
| 6,000 | 0.08 |
| 7,000 | 0.07 |
| 8,000 | 0.06 |
| 9,000 | 0.06 |
The degree days to be used to determine U-value shall be those in Table 1.
Existing mobile homes converting to electric heat (built prior to the effective date of the Department of Housing and Urban Development (HUD) "Mobile Home Construction and Safety Standards"), shall meet the following requirements:
Unusual circumstances. In unusual circumstances when the application of these standards appears impracticable or inequitable, the utility or applicant will refer the matter to the Power Authority for special ruling or for the approval of special conditions which may be mutually agreed upon.
The standards specified herein shall be effective on and after September 1, 1981 as a precondition for the expansion of existing electric service for the purpose of providing electric heat to all existing buildings and to existing mobile homes not subject to HUD "Mobile Home Construction and Safety Standards".
The requirements imposed by these standards represent the minimum standards for existing buildings and mobile homes for which utilities may provide electric service. However, some utilities may require a greater degree of thermal protection than these standards impose. These standards, are not intended to supersede more stringent municipal requirements or standards nor are they intended in any way to contravene the State Energy Conservation Construction Code Act. The thermal protection for mobile homes is controlled by the Department of Housing and Urban Development "Mobile Home Construction and Safety Standards". In accordance with the Housing and Community Development Act of 1974, Title VI (cited as the National Mobile Home Construction and Safety Standards Act of 1974), the Federal standards take precedence over all State or local standards.
A form of certificate of compliance, included as Appendix 10-B of this Title, shall be provided to the builder or contractor when the builder/contractor first contacts the utility concerning electrical service for conversion to electric heat of existing buildings or of existing mobile homes covered by these standards. The applicable form shall be completed before the utility supplies permanent new or expanded electric service. In addition, an inspection of the premises by an employee of the municipal electric department, building code enforcement inspector, or qualified representative of the municipal government is required to verify compliance with these standards.
TABLE 1
HEATING DEGREE DAYS-NEW YORK STATE
(For use in selecting required U-values)
| Counties | Degree days |
| Albany | 7,000 |
| Allegany | 7,000 |
| Bronx | 5,000 |
| Broome | 7,000 |
| Cattaraugus | 7,000 |
| Cayuga | 7,000 |
| Chautauqua | 7,000 |
| Chemung | 7,000 |
| Chenango | 8,000 |
| Clinton | 8,000 |
| Columbia | 7,000 |
| Cortland | 8,000 |
| Delaware | 7,000 |
| Dutchess | 7,000 |
| Erie | 7,000 |
| Essex | 9,000 |
| Franklin | 8,000 |
| Fulton | 8,000 |
| Genesee | 7,000 |
| Greene | 7,000 |
| Hamilton | 9,000 |
| Herkimer (Adirondack | N. 9,000 |
| Park Boundary) | S. 8,000 |
| Jefferson | 7,000 |
| Kings | 5,000 |
| Lewis | 8,000 |
| Livingston | 7,000 |
| Madison | 8,000 |
| Monroe | 7,000 |
| Montgomery | 7,000 |
| Nassau | 5,000 |
| New York | 5,000 |
| Niagara | 7,000 |
| Oneida | 8,000 |
| Onondaga | 7,000 |
| Ontario | 7,000 |
| Orange | 6,000 |
| Orleans | 7,000 |
| Oswego | 7,000 |
| Otsego | 8,000 |
| Putnam | 6,000 |
| Queens | 5,000 |
| Rensselaer | 7,000 |
| Richmond | 5,000 |
| Rockland | 6,000 |
| St. Lawrence | 8,000 |
| Saratoga | 7,000 |
| Schenectady | 7,000 |
| Schoharie | 7,000 |
| Schuyler | 7,000 |
| Seneca | 7,000 |
| Steuben | 7,000 |
| Suffolk | 6,000 |
| Sullivan | 7,000 |
| Tioga | 7,000 |
| Tompkins | 7,000 |
| Ulster | 7,000 |
| Warren | 9,000 |
| Washington | 9,000 |
| Wayne | 7,000 |
| Westchester | 6,000 |
| Wyoming | 7,000 |
| Yates | 6,000 |
EQUATION 1
Uo = UwAw + UgAg + UdAd. . ./Ao
Where:
Uo = the average or combined transmittance of the gross exterior wall area in Btu/hr/sq ft/°F.
Ao = the gross exterior wall assembly area in square feet.
Uw = the coefficient of heat transmission of the components of the opaque wall area in square feet.
Aw = opaque wall area in square feet.
Ug = the coefficient of heat transmission of the glazing area. The Ug of glazing shall be the average value of the window, including frames and glazing areas.
Ag = glazing area (shall be the area of the finished opening), in square feet.
Ud = the coefficient of heat transmission of the door, or similar opening.
Ad = door area (shall be the area of the finished opening), in square feet.
Note:
Where more than one type of wall, window or door is used, the U and A terms for those items shall be expanded into subelements as:
Uw1Aw1 + Uw2Aw2 + Uw3Aw3 + etc.
N.Y. Comp. Codes R. & Regs. Tit. 21 § 458.2