ASHRAE Level 1: Walk-Through Analysis

Best for: Quick overview and low-cost opportunities
Goal: Identify obvious energy-saving measures

This is the most basic audit, often called a “walk-through.” An energy professional will visit your facility, review utility bills, and visually inspect building systems. The goal is to identify low- or no-cost improvements—like lighting upgrades or thermostat adjustments—that can start saving you money right away.

You’ll receive a brief report highlighting:

• Major energy users
• Immediate energy-saving opportunities
• A rough estimate of potential savings

It’s ideal for getting a high-level picture and deciding whether further analysis is worth the investment.

ASHRAE Level 2: Energy Survey and Analysis

Best for: Deeper understanding and prioritized recommendations
Goal: Identify cost-effective energy efficiency measures (EEMs)

This level includes everything from Level 1, plus more detailed data collection and analysis. The auditor will:

• Conduct interviews with key staff
• Analyze utility data in more depth
• Evaluate building equipment performance
• Use basic modeling or calculations to estimate savings and costs

You’ll receive a detailed report with:

• A list of recommended energy efficiency measures
• Cost-benefit analysis (including payback periods)
• Preliminary financial projections

Level 2 audits help prioritize which improvements make the most sense for your budget and goals.

ASHRAE Level 3: Detailed Analysis of Capital-Intensive Projects

Best for: Major upgrades and investment decisions
Goal: Provide financial-grade analysis for large-scale improvements

If you’re considering significant equipment replacements or retrofits, a Level 3 audit provides the in-depth data you need. This includes:

• Advanced monitoring and data logging
• Engineering-grade analysis
• Detailed financial modeling and risk assessment

The Level 3 audit is often used to secure funding, make investment-grade decisions, or justify large capital projects like HVAC replacement or building automation systems.

You’ll receive:

Financial analysis to support investment or financing

High-accuracy savings projections

Engineering specifications for proposed upgrades