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ASHRAE Level 2 – The Level 2 audit builds on the level 1 analysis with more detailed energy calculations and added financial analysis of proposed energy measures. This level of audit uses utility data over a longer period of time so that the auditor can better understand the building's energy use.

Energy Audits Requirements Include any qualitative or quantitative effects on the facility operation and maintenance. 2. Provide a quantitative analysis of the interactions among all recommended measures, especially lighting and HVAC and envelope and HVAC EEMs.

By ASHRAE Audit Level ASHRAE LevelAverage Cost per Square Foot1$0.08 - $0.222$0.23 - $0.353$0.35 - $0.50 Dec 18, 2023

These different levels of audits are now called ASHRAE Level 1, ASHRAE Level 2 and ASHRAE Level 3 audits. Some buildings don't require hundreds of hours of engineering time, and a smaller audit will suffice, whereas for other buildings, the additional time and analysis is well worth the investment.

Two types of energy audits are available: a preliminary energy audit and a detailed energy audit. The type you choose will depend on your needs. Preliminary energy audit: This type of audit is simply a data-gathering exercise that offers a preliminary analysis.

In order to understand how they can save, the Local Government Energy Audit (LGEA) Program allows local government agencies, state contracting agencies, public agencies, state colleges and state universities, and select non-profit agencies, to examine their facilities and see how they can improve their energy use.

Energy audit is defined as “the verification, monitoring and analysis of use of energy including submission of technical reports containing recommendations for improving energy efficiency with cost benefit analysis and an action plan to reduce energy consumption.”

This column explores two phases of an energy audit: planning and investigating. A systematic energy audit can be broken into four phases: planning, investigating, implementing and sustaining.