Energy audit costs vary by region, audit type, and the specific tests performed. This guide helps you understand what to expect in your area.
National Cost Overview
According to Angi (2026), the average home energy audit costs $437. Per-square-foot pricing ranges from $0.10-$0.40/sq ft. HomeGuide reports a national range of $100-$2,400.
| Audit Level | Cost Range | What's Included |
|---|---|---|
| Level 1 (walkthrough) | $100-$250 | Visual inspection, utility bill review, basic recommendations |
| Level 2 (comprehensive) | $250-$650 | Blower door test, thermal imaging, detailed report |
| Level 3 (diagnostic) | $650-$1,000+ | All Level 2 + duct testing, combustion analysis, energy modeling |
| HERS Rating | $500-$800 | Full energy model, standardized HERS Index score |
Cost by Region
Northeast
| State | Average Cost | Range | Free Options |
|---|---|---|---|
| New York | $400 | $250-$650 | NYSERDA free assessment |
| Massachusetts | $450 | $250-$700 | Mass Save (heavily subsidized) |
| New Jersey | $400 | $200-$600 | PSE&G and JCP&L programs |
| Pennsylvania | $375 | $200-$550 | Various utility programs |
| Connecticut | $425 | $250-$650 | Energize CT (free/reduced) |
The Northeast has the highest average audit costs due to complex older housing stock and higher labor rates. However, Northeast utilities also offer the most generous subsidy programs. Mass Save in Massachusetts provides virtually free comprehensive audits.
Southeast
| State | Average Cost | Range | Free Options |
|---|---|---|---|
| Florida | $350 | $200-$550 | FPL and utility programs |
| Georgia | $325 | $200-$500 | Georgia Power programs |
| North Carolina | $325 | $200-$500 | Duke Energy programs |
| Virginia | $350 | $200-$550 | Dominion Energy programs |
| South Carolina | $300 | $175-$475 | SCE&G programs |
Southeast costs are moderate. Audits focus heavily on cooling efficiency, duct sealing, and moisture management.
Midwest
| State | Average Cost | Range | Free Options |
|---|---|---|---|
| Illinois | $375 | $200-$550 | ComEd and Nicor Gas subsidized |
| Ohio | $325 | $200-$500 | AEP Ohio programs |
| Michigan | $350 | $200-$525 | DTE Energy programs |
| Minnesota | $375 | $225-$550 | CenterPoint Energy programs |
| Wisconsin | $350 | $200-$525 | Focus on Energy programs |
Midwest audits emphasize heating efficiency, air sealing, and insulation — critical in cold climate states.
South/Southwest
| State | Average Cost | Range | Free Options |
|---|---|---|---|
| Texas | $350 | $200-$500 | Various utility programs |
| Arizona | $350 | $200-$525 | SRP and APS programs |
| Colorado | $400 | $225-$600 | Xcel Energy programs |
| New Mexico | $325 | $200-$500 | PNM programs |
West Coast
| State | Average Cost | Range | Free Options |
|---|---|---|---|
| California | $400 | $250-$650 | PG&E, SCE, SDG&E programs |
| Oregon | $375 | $225-$575 | Energy Trust of Oregon |
| Washington | $375 | $225-$575 | PSE and utility programs |
Factors That Affect Cost
Home Size
- Under 1,500 sq ft: $150-$350
- 1,500-2,500 sq ft: $250-$500
- 2,500-4,000 sq ft: $400-$700
- Over 4,000 sq ft: $600-$1,200+
Audit Scope
Basic walkthroughs cost less; comprehensive audits with blower door testing, thermal imaging, and duct testing cost more. More tests = more data = better recommendations.
Local Market
Areas with more certified auditors tend to have competitive pricing. Rural areas with few auditors may charge premium rates.
Home Complexity
Multi-story homes, homes with multiple HVAC systems, and homes with complex building envelopes take longer to audit and cost more.
How to Reduce Your Audit Cost
1. Check Utility Programs First
Most utilities offer free or subsidized energy assessments. These may not be as comprehensive as private audits but provide a good starting point. Contact your utility company before hiring privately.
2. Bundle with Improvements
Many contractors offer free or reduced-cost audits when you commit to improvement work. This can save $200-$500 on the audit cost.
3. DIY Assessment First
Our guide on DIY vs professional audits explains what you can check yourself before paying for a professional.
4. Group Purchasing
Some communities organize group energy audit purchases, negotiating volume discounts. Check with local environmental organizations.
Federal Tax Credit Status (2026)
The federal tax credit for energy audits (up to $150 under Section 25C) expired on December 31, 2025. However, federal tax credits for improvements identified during audits (heat pumps up to $2,000, insulation up to $1,200) continue through 2032. See our energy tax credits guide.
Frequently Asked Questions
How much does a home energy audit cost on average?
The national average is $437, but most homeowners pay $250-$600 for a comprehensive Level 2 audit including blower door testing and thermal imaging.
Can I get a free energy audit?
Many utilities offer free or heavily subsidized energy assessments. NYSERDA (New York), Mass Save (Massachusetts), Energy Trust of Oregon, and many other programs provide no-cost or low-cost audits. Contact your local utility company first.
Is an energy audit tax deductible in 2026?
The specific energy audit tax credit expired at the end of 2025. However, improvements recommended by the audit (heat pumps, insulation, air sealing) may qualify for federal tax credits through 2032. Consult a tax professional.
How do I find the cheapest energy audit near me?
Start with your utility company's programs (often free or subsidized). Then compare quotes from 2-3 BPI-certified local auditors. Ask if they offer discounts when bundled with improvement work.
What is the ROI of an energy audit?
A $300-$600 audit that identifies $500-$1,500/year in energy savings pays for itself within the first year. The ROI improves dramatically when audit recommendations are implemented. See our top energy efficiency upgrades by ROI.
-- The Energy Audit Finder Team