U.S. Department of Energy - Energy Efficiency and Renewable Energy

Building Technologies Office – Appliance & Equipment Standards

Commercial Unitary Air Conditioners and Heat Pumps Draft Analyses

Some of the following documents are available as Adobe Acrobat PDFs. Download Adobe Reader.

Engineering Analysis

• Engineering Analysis Presentation: Cost/Efficiency Curves
• Commercial Building Energy Use and End Use Load Characterization Analysis Presentation

Life Cycle Cost Analyses

• Life Cycle Cost Analysis Spreadsheet Model (Tariff-Based Electricity Prices): DOE uses the tariff-based Life Cycle Cost (LCC) Analysis Spreadsheet Model in the commercial unitary air conditioner energy efficiency standards rulemaking for calculating annual electricity expenses that are based upon electricity prices determined from electric utility tariffs. DOE has revised the tariff-based LCC Spreadsheet Model since it was first posted to this website on March 31, 2003. DOE has now based this LCC Spreadsheet Model on electricity price forecasts from the Energy Information Administration's 2003 Annual Energy Outlook.[revised 7/24/03]

• Life Cycle Cost Analysis Spreadsheet Model (Hourly Based Electricity Prices): DOE uses the hourly based Life Cycle Cost (LCC) Analysis Spreadsheet Model in the commercial unitary air conditioner standards rulemaking for calculating annual electricity expenses based upon electricity prices determined from hourly electric utility load and cost data. DOE has revised the hourly based LCC Spreadsheet Model since it was first posted to this website on March 31, 2003. DOE has now based this LCC Spreadsheet Model on electricity price forecasts from the Energy Information Administration's 2003 Annual Energy Outlook.[revised 7/24/03]

• Life Cycle Cost Analysis Presentation: Inputs and Results. DOE has revised the Life Cycle Cost (LCC) Analysis Presentation since it was first posted to this website on March 31, 2003. The revised presentation reflects the updated life cycle cost analysis that uses electricity price forecasts that are based on data in the Energy Information Administration's 2003 Annual Energy Outlook (AEO).[revised 7/25/03]

National Energy Savings

• National Energy Savings Spreadsheet: The National Energy Savings (NES) Spreadsheet model is a tool for determining the shipments impacts, national energy savings, and national net present value resulting from higher efficiency standards for certain commercial unitary air conditioning equipment. DOE has revised the NES Spreadsheet since it was first posted to this website on March 31, 2003. The revisions to the NES Spreadsheet include: (1) basing future electricity prices, commercial building starts, and electric utility generation facilities on forecasts from the Energy Information Administration's 2003 Annual Energy Outlook; (2) adding the capability to analyze national consumer impacts from near-immediate adoption of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE)/Illuminating Engineering Society of North America (IESNA) Standard 90.1-1999, "Energy Standard for Buildings Except Low-Rise Residential Buildings," energy efficiency levels; and (3) using a single set of assumptions, rather than a multiple set, to forecast commercial unitary air conditioner energy efficiency trends. [revised 7/25/03]