Energy auditors assess how much energy a home or commercial building uses and where it is lost. They are hired by homeowners, landlords, property managers, and small businesses, and sometimes by contractors or utility programs. Invoices usually cover the on-site audit, diagnostic testing such as blower door and duct leakage tests, thermal imaging, and a written report with recommendations.
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Most residential auditors charge a flat fee based on home size and the level of testing, such as a basic walkthrough, a standard audit with blower door, or a comprehensive audit with duct testing, combustion safety checks, and modeling software. Commercial work is usually priced per square foot for ASHRAE Level 1 or Level 2 audits, or hourly on larger scopes. Add-ons like infrared scans, duct blaster tests, follow-up testing after air sealing, and HERS ratings are often priced separately. Work done for utility or rebate programs may follow a fixed program rate, and those jobs often bill through a contractor or program administrator. Travel is typically covered in the flat fee within a service area, with a mileage charge beyond it. Some auditors credit part of the audit fee toward a contractor job if they also do retrofit work, but check your local rules and any conflict-of-interest requirements of the programs you work with.
| Service | Priced | Typical range |
|---|---|---|
| Basic residential walkthrough audit | flat fee | $150-300 |
| Standard home energy audit with blower door and infrared scan | flat fee | $350-650 |
| Comprehensive audit with duct leakage test and combustion safety | flat fee | $500-900 |
| Post-retrofit blower door test-out | flat fee | $150-300 |
| HERS rating (new construction, rating and testing) | per home | $400-900 |
| Commercial ASHRAE Level 1 walkthrough audit | per sq ft | $0.05-0.25 |
| Consulting, utility bill analysis, and energy modeling | per hour | $85-175 |
| Mileage beyond service area | per mile | $0.70-1.00 |
Typical US ranges. Rates vary by region, experience, and job size.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Standard home energy audit, 2,100 sq ft single-family home (walkthrough, blower door test, infrared scan, combustion safety check) | 1 flat fee | $525.00 | $525.00 |
| Duct leakage test (duct blaster), forced-air system | 1 each | $150.00 | $150.00 |
| Written report with prioritized recommendations and estimated savings | 1 flat fee | $125.00 | $125.00 |
| Utility bill analysis, 24 months of electric and gas data | 1 hour | $100.00 | $100.00 |
| Travel outside standard service area (18 miles over) | 18 mile | $0.70 | $12.60 |
| Total | $912.60 | ||
Notes: Payment due within 14 days of the report delivery date. Audit performed on 3/12 with the homeowner present. Findings are estimates based on conditions observed on the day of testing. A post-retrofit test-out is available for $200 if completed within 90 days.
Ties the invoice to a specific site visit and matters if the report is later used for a rebate, tax credit, or sale disclosure.
Separates a walkthrough from a standard or comprehensive audit so the client understands what the fee covered.
Each test takes time and equipment, and listing them avoids questions about the price.
Starts the payment clock and documents that the deliverable was provided.
Utility programs and rebate administrators often require certified auditors, and clients may need this for paperwork.
Utility and rebate program jobs are often paid only when the invoice matches the program's job ID.
Shows how out-of-area charges were calculated so they are not disputed.
Residential audits are often paid at the time of service or within 7 to 14 days of report delivery, since the client wants the report quickly. Many solo auditors take payment by card or check on the day of the audit and release the report after payment. For commercial audits, a deposit of 25 to 50 percent is common, with the balance due on delivery of the report, often net 30. Utility or program work may pay on the program's schedule, which can run 30 to 60 days, so check the terms before accepting the job. A late fee of 1 to 1.5 percent per month is common on commercial work if stated in advance. Include a cancellation or no-access fee if clients are not home or the site is not ready for testing.
For residential audits, the report is your leverage. State on the estimate that the written report is delivered once the invoice is paid, and collect payment at the visit when you can.
A post-retrofit blower door test is a second trip with its own equipment setup. Quote it as a separate line item instead of folding it into the original fee, and note the time window in which the price applies.
Large homes, multiple HVAC systems, finished basements, or knob-and-tube wiring take more time. Use tiered flat fees by square footage or add a line for extra systems so the price matches the work.
If you work with utility or state programs, copy the required job ID, auditor certification number, and test results format onto your invoice. Mismatched paperwork is a common reason for payment delays.
Save blower door readings, photos, and infrared images with each job. If a client questions the findings or the bill, you can show what was measured.
Most residential auditors use a flat fee tied to home size and test level, because clients want a clear price. Hourly billing is more common for consulting, bill analysis, modeling, and commercial work where scope is less predictable.
It depends on the state. Many states do not tax professional services, while a few tax certain inspection or consulting services. Check with your state revenue department or a local accountant.
Yes, though most auditors include a basic report in the audit fee. A separate line makes sense for extended reports, energy models, or documents prepared for rebate applications, lenders, or real estate transactions.
Use the program's required format and include the customer account or job number, audit date, your certification ID, and the program rate. Confirm the payment schedule up front, since program payments often arrive later than direct client payments.
Include a cancellation policy in your estimate or booking confirmation, such as a fee for cancellations within 24 hours or a no-access visit. Invoice that fee as a flat line item with the date and reason.
Send a Energy Auditor estimate for approval, then turn it into an invoice when the work is done.
Energy Auditor estimate template