NAC704.862. Determination of levels of R-values for insulation of ceilings and appropriateness of thermal windows.

     1. The levels of R-values for insulation of ceilings and the appropriateness of thermal windows must be determined in accordance with the 2006 International Energy Conservation Code, as adopted by reference pursuant to NAC 704.803.

     2. For the purposes of determining the levels of R-values for insulation in ceilings and the appropriateness of thermal windows pursuant to subsection 1, residential buildings are categorized according to use of fuel, as follows:

     (a) Electricity: all residential buildings in which the principal means of heating spaces is by a system of electric resistance heating.

     (b) Gas: all residential buildings in which natural gas, propane or butane is the principal fuel used for heating spaces.

     (c) Heat pump: all residential buildings in which the principal means of heating spaces is by an electric heat pump.

     (d) Oil: all residential buildings in which heating oil or kerosene of grade number 2 is the principal fuel used for heating spaces.

     (e) Solar: all residential buildings in which the principal means of heating spaces and water is solar photovoltaic panels or solar thermal panels.

     (Added to NAC by Pub. Service Comm’n, 1-19-84, eff. 5-17-84; A by Pub. Utilities Comm’n by R058-06, 6-28-2006)