Home Energy Audit Cost
Reviewed 2026-07-30
Typical range
$250 – $700
National average
$425
Home Energy Audit cost breakdown
| Line item | DIY cost | Professional cost |
|---|---|---|
| Basic walkthrough audit with visual inspection | $0 with a DIY checklist, limited accuracy | $150 – $300 |
| Blower door test to quantify air leakage | Not possible without rented equipment | $150 – $300 |
| Infrared thermal imaging of envelope | $50 – $100 rental thermal camera, less precise | $100 – $250 add-on |
| Comprehensive audit with written report and rebate paperwork | Not applicable | $400 – $700 |
| Combustion safety and duct leakage testing | Not possible without calibrated tools | $100 – $200 add-on |
What pushes home energy audit cost up
- Larger homes with more square footage and stories to test
- Comprehensive audits including blower door and infrared combined
- Requesting a full written report for utility rebate applications
- Homes with complex additions or multiple HVAC zones
- Combustion safety testing for gas appliances included in scope
- Rural areas with fewer certified auditors, raising travel costs
What brings home energy audit cost down
- Utility company sponsored audits, sometimes free or heavily subsidized
- Basic walkthrough audits without diagnostic testing equipment
- Smaller homes with simple, single-story layouts
- State or federal energy efficiency rebate programs covering part of the fee
- Scheduling during an auditor's off-season for faster, discounted rates
Home Energy Audit diagnostic and emergency fees
Included in the audit price; there is no separate diagnostic fee
Energy audits are non-emergency assessments; there is no rush pricing, though scheduling around extreme weather (very hot/cold days) improves accuracy of test results.
Questions to ask before you approve home energy audit work
- Is the auditor BPI (Building Performance Institute) certified?
- Does the audit include a blower door test and infrared imaging?
- Will I receive a written report with prioritized recommendations?
- Are there utility rebates that reduce the cost of the audit itself?
- Does the audit include combustion safety testing for gas appliances?
- How long after the audit will I get results and next-step estimates?
Home Energy Audit cost questions
Is a home energy audit worth the cost?
Most homeowners recoup the audit cost within one to two years through targeted insulation, air sealing, and duct improvements identified in the report.
What is a blower door test?
A calibrated fan is temporarily installed in an exterior door to depressurize the house, allowing the auditor to measure total air leakage in cubic feet per minute.
Are energy audits eligible for tax credits or rebates?
Many utilities and some federal programs offer partial reimbursement or free audits, so it's worth checking local incentive programs before booking.
Problems home energy audit solves
- Why Is My House So Hot?
- Why Is My House So Cold?
- Why Is My House Getting High Energy Bills?
- Why Is My House Getting Drafty Windows?
Sources for these home energy audit costs
- U.S. Department of Energy, Home Energy Audit guidance
- Building Performance Institute (BPI) Standards
- ENERGY STAR Home Energy Assessment guidance