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Best energy efficiency auditors near Clemson, SC

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

EnergySmith Home Performance
4.8(
164
)
Home Energy Audit

Serving Clemson, 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
38 neighbors recently requested a quote
Recommended by94%of homeowners
The Solar Guru
5.0(
1
)
Energy Audit - For BusinessHome Energy Audit

Serving Clemson, 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 Clemson, 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 Clemson, 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
Avatar for Energy Sharks Heating & Air
Energy Sharks Heating & Air
4.4(
39
)
Energy Audit - For BusinessHome Energy Audit

Serving Clemson, SC and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"Summary: Hire them - period! This review has 2 parts: 1) Diagnosis of existing system by Phil, the owner and 2) Removal of old / existing system and installation of new system led by Danny, the lead installer of the FOUR! (4) men on our job. 1). DIAGNOSIS of "Old" System My wife and I bought a townhouse in Greenville and I knew (per the inspection) that the old system was "shot". Consulted seller's realtor for an HVAC Company recommendation as well as Angies List, where I saw the reviews for Energy Sharks. Submitted online contact form and had a call by the owner Phil within the hour. Set up the appointment THE NEXT DAY to inspect existing system. I was not able to be onsite but Phil checked it out and then spent time to explain the issues with the current system, and educated me in PLAIN ENGLISH why the system he recommended, along with the addition of an additional return to help supply the necessary airflow, was what would be needed to provide the level of comfort which we desired. Price was competitive and definitely less than Realtor's referral, who didn't even mention the return / airflow problem. Bottom line, Phil did his job and gave me a quote that I thought was fair (and thousands less than the other quote)... 2). REMOVAL of old system and INSTALLATION of new system. The crew of FOUR (4) MEN arrived at 7:15am and immediately got to work. They put in drop cloths everywhere they would be working and went about their work in a steady manner. A HUGE shout out to Danny, the lead installer. ASK FOR HIM on your job! He kept me constantly apprised of what was going on, where there were some holes in the ceiling that pre-existed, where the new return could be and should be, etc. Can't tell you how competent the entire team was. Each of the men did their part and they worked very efficiently. Less than 4 hours later, they were done. Got a quick tutorial and they were on their way. Summary: Prompt service, fair pricing and excellent communication means I am pleased to refer them - without reservation. Great job Energy Sharks! A+"
Commercial Oven Wraps
LED & CFL Bulbs
Duct Sealing
Recommended by88%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

Dehumidifiers typically use 300 to 700 watts of electricity per hour, whereas portable dehumidifiers use about 40 watts per hour. The exact amount of electricity your dehumidifier will generate depends on its capacity and energy efficiency. Generally, higher-capacity dehumidifiers generate more electricity than lower-capacity units, but they also usually have better energy efficiency over the long run.

You can save money on heating oil through a combination of improving home efficiency and smart purchasing strategies.

Home Efficiency and Usage:

  • Improve Insulation: Ensure your home, especially the basement and attic, is well-insulated and sealed against drafts to prevent heat leakage.

  • Manage Your Thermostat: Use a properly calibrated and programmable thermostat. Lower the temperature by a few degrees, particularly when you are away from home or asleep.

Purchasing Strategies:

  • Buy in the Off-Season: Order heating oil during the summer months when prices are generally at their lowest. This strategy is most effective if you have a large primary tank or a separate storage tank to accommodate bulk deliveries.

  • Consider a Delivery Contract: Some companies offer contracts with a set price for the term. This can lead to savings if market prices for oil increase, but you might pay more if prices drop.

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.

Yes, installing an attic fan can help lower your electric bill—particularly if you live in a hot and humid region. By replacing hot and stuffy air with cooler air, these fans help regulate the temperature in your attic and the rest of your home, taking some of the pressure off of your air conditioner.

Setting your AC unit to 78 degrees can, indeed, help you save energy. In fact, according to experts, every degree you turn the unit up could save you between 1% and 3% on your energy bills. That said, turning your unit off entirely while you’re out might actually be less efficient than keeping it on at a higher temperature. Why? The unit will need to work extra hard to cool the house back off again after all those hot hours. 

The Clemson, 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.