Alternatives to actual measurements and inspection.

In place of calculations based upon actual measurements and inspection as described in subsection 2 of NAC 704.820 , a utility’s proposed methodology may allow: 1. A measure for conserving energy to be evaluated without the actual measurements if the estimated costs of installation and the savings in energy which would result from such an installation in the typical house within the applicable climatic zone would not vary more than 15 percent from the costs and savings which would be determined if actual measurements were used. 2. An inspector to use the International Energy Conservation Code , as adopted by reference pursuant to NAC 704.803 .