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Best energy efficiency auditors near Seneca, SC

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Top-Rated Energy efficiency auditors in Seneca - Updated Nov 2026

EnergySmith Home Performance
4.8(
164
)
Home Energy Audit

Serving Seneca, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Credit card accepted

"Energy Smith is a top rate company: Joe took time to review my concerns, put together a detailed plan and estimate. The crew arrived as scheduled very courteous and went to work sealing leaks preparing for insulation. Installed copper foil where needed, cleaned up attic space. Looks great, already feel difference in room temperature. Great job!! Thanks much."
Response time2 days
35 neighbors recently requested a quote
Recommended by94%of homeowners
The Solar Guru
5.0(
1
)
Energy Audit - For BusinessHome Energy Audit

Serving Seneca, SC and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer \nservice that we provide to meet the consumer's needs. It is our mission \nto provide excellent workmanship and complete \ncustomer satisfaction from start to completion of a project. In order to \nunderstand the needs and expectations of our customers, we take great \ncare to work and communicate with every customer in a professional \nmanner. Our reputation is based on service, safety, \nand quality, regardless of how large or small the job.

Recommended by100%of homeowners
Avatar for ADT Solar
ADT Solar
4.4(
111
)
Energy Audit - For BusinessHome Energy Audit

Serving Seneca, SC and surrounding areas

In business since 2008

Free estimates

Warranties offered

"Rep. checked entire system. He found several wires not connected properly and fixed this. He also made recommendations regarding the attachment of the panels to the rood that would provide more stability and leakproofing. The representative appeared to know what he was doing - much better than others, including the representative who was engaged by the roofer (who replaced our rood due to hail damage) to disconnect/connect the panels."
11 kW PV Installation
5 kW PV Installation
9.5 kW PV Installation
Recommended by89%of homeowners
Avatar for Corley Plumbing Air Electric Inc
Corley Plumbing Air Electric Inc
4.0(
453
)
Energy Audit - For BusinessHome Energy Audit

Serving Seneca, SC and surrounding areas

In business since 1986

Emergency services offered

"It was thrilling. Without the Corley guys’ diagnostic and electrical expertise, the house would probably have burned down. Seriously. This was a bona fide emergency. It was puzzling and difficult for them, and stressful for us — before it was over, I had evacuated the house — and we were making weak jokes about poltergeists and exorcists… but apparently a squirrel had chewed up the Duke Energy line, sending thousands of units of raw electrical power into the house! ????? Afterwards, I needed a vacation somewhere — anywhere — quiet… but thanks to Corley, we have a house, new wires, and are (relatively) sane. Thanks again, Corley crew! ❤️❤️❤️"
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+5

Recommended by77%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

When combined with a substantial solar system, if you have enough Powerwalls, you could go off-grid and be energy independent. But remember, you'd need enough Powerwalls to power your whole home continuously because a single Powerwall can’t power large appliances for extended periods. One Powerwall is able to power an average-sized home's emergency circuits, lights, and outlets. To power large appliances, you likely need two or three Powerwalls.

Home power is measured in kilowatt-hours, commonly expressed as kWh. The average home uses between 800 and 1,000 kWh per month. Peak usage (and highest bills) occurs in the middle of summer and the depths of winter. Keeping on top of your usage during these crucial months will lower your annual average usage considerably. 

Modern windows provide enhanced UV protection, improved heat retention, and cooling efficiency, contributing to overall household energy savings.

A home energy audit costs about $420 on average, with prices ranging from $100 to $2,250 or more. The final cost depends on factors like your home's size, location, the thoroughness of the audit, and the specific tests performed. A basic Level 1 walk-through inspection typically costs between $150 and $200, while a comprehensive Level 3 audit with detailed testing and a report costs around $900. Homeowners may be able to use the 2022 Inflation Reduction Act’s Energy Efficient Home Improvement credit to cover up to $150 of the audit cost.

Costs for common individual tests include:

  • Blower door test: $350

  • Duct testing: $100

  • HERS test: $375

  • HERS certification: $200

  • Infrared imaging: $200

Depending on the level of audit you choose, a home energy audit will at least include a walk-through of the home to determine visible inefficiencies, but may include testing and a highly detailed inspection and report laying out the home’s inefficiencies and providing recommendations to fix those issues. The audit may also include a review of utility bills and mechanical testing. Consult your home energy auditor about the types of services they provide before hiring.

The Seneca, SC homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.