OAR 330-062-0020: Recommendation Criteria

(1) OAR 330-062-0025 recommends measures at levels which are achievable with commonly available materials and material sizes. (2) OAR 330-062-0025 recommends weatherization measures at levels which are estimated by the Oregon Department of energy to be economically feasible. The energy savings used to determine whether the weatherization measure is economically feasible is the calculated difference between a dwelling’s annual energy requirement with the measure installed and its annual energy requirement without the measure, using calculation methods described in the 1981 American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) Handbook of Fundamentals and the 1980 ASHRAE Systems Handbook. (3) For the purpose of developing OAR 330-062-0025, the energy savings estimate for each recommended weatherization measure was calculated independently of the savings attributed to other recommended measures the actual savings realized from the installation of several measures, therefore, may be less than the sum of the calculated individual savings for each measure. [Publications: Publications referenced are available from the agency.]