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TRUSTED BY LANCASTER, SC HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon14
    Verified energy efficiency auditing services reviews

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

Avatar for ADT Solar
ADT Solar
4.4(
111
)
Energy Audit - For BusinessHome Energy Audit

Serving Lancaster, SC and surrounding areas

In business since 2008

Free estimates

Warranties offered

"We met with 3 different companies to advise on getting solar panels. The first 2 companies basically just told us what size system we could get based on state and federal tax rebate levels. Heard an advertisement for Sunpro on radio and decided to call them; turned out to be a good decision. Kara with Sunpro was extremely informative and had a nice package put together for us to review. She even researched our home and had an idea of how much production we could expect with the recommended solar panels. Even after selecting Sunpro, I called Kara with questions about things I'd heard from others or something I forgot to ask. I never felt like I was a burden and she always returned my calls if I had to leave a message. The complete team with Sunoro were professional and eager to help. Satisfied with new solar system and looking forward to enjoying savings on electric bills.
"
11 kW PV Installation
5 kW PV Installation
9.5 kW PV Installation
Recommended by89%of homeowners
Avatar for South Carolina Solar Project
South Carolina Solar Project
5.0(
9
)
Energy Audit - For BusinessHome Energy Audit

Serving Lancaster, SC and surrounding areas

In business since 2017

Free estimates

"Jon Mason with South Carolina Solar Project did an amazing job start to finish. From the initial consultation and review of solar energy to the installation, topnotch professionalism. Jon's technical expertise, financial knowledge and passion for solar energy is evident and assured me that I was making the right choice to go Solar. I would, and have, highly recommend South Carolina Solar Project to anyone looking to go Solar!"
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+61

Recommended by100%of homeowners
Avatar for Fresh Air Technologies, LLC
Fresh Air Technologies, LLC
4.4(
239
)
Energy Audit - For BusinessHome Energy Audit

Serving Lancaster, SC and surrounding areas

In business since 2001

Credit card accepted

"Outstanding! Mario and his workers did a fantastic job! They removed all insulation. They sanded off all wood and treated with a solution to kill any residual mold. They placed new insulation. They encapsulated the whole crawl space and placed a dehumidifier. I felt very confident that the job was "done right". The whole organization very professional."
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+4

Recommended by87%of homeowners
Avatar for Sound Advice
Sound Advice
4.5(
58
)
Energy Audit - For BusinessHome Energy Audit

Serving Lancaster, SC and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"If you are looking for someone to install home theater--don't even bother looking anywhere else. Robert's prices were competitive, and he did an absolutely amazing job for us. He even worked overtime to make sure he was finished within the timeframe we agreed upon, and he made sure everything was working perfectly and took the time to walk us through everything. I cannot recommend him highly enough--super nice guy who is very skilled, knowledgable and works tirelessly to make sure you're happy. There's not much more you can ask for in a service provider.
"
Mounted TV
Fireplace
TV above an existing fireplace
Recommended by97%of homeowners
AltruEnergy Building Performance
5.0(
2
)
Home Energy Audit

Serving Lancaster, SC and surrounding areas

In business since 2006

Free estimates

"Chris Folse knows his stuff! He has been a big help teaching and showing us how to make our home more energy efficient. He speaks to you like a person and helps you truly understand your home's energy shortcomings. He is not just out to make a buck. He becomes honestly vested in making your home a more energy efficient place to live. You can tell from the moment you meet him that he is excited about, and strongly believes in, what he does and that translates into his work. I highly recommend his services to anyone interested in making their home more energy efficient."
Recommended by100%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

The number one culprit of high energy bills is older appliances, especially fridges and freezers that are left on all the time. These two appliances tend to last a long time, which is good, but it also means that newer models are usually significantly more energy-efficient due to upgraded technology. The second most common reason for a high bill is heating and air conditioning.

Energy-efficient windows cost more than other window types, but they can help you save on your monthly energy bills, get you some breaks on your taxes, and even increase the value of your home. According to Michael S. Regan, Administrator of the U.S. Environmental Protection Agency, when people invest in green upgrades like energy-efficient windows, they save energy, money, and more.

Thankfully, LED lights use less electricity than incandescent lights, meaning you won’t spend as much on utility bills by using these light strips. Each 5-meter LED light strip will cost about $3 per year on your energy bill.

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.

Installing weather stripping or upgrading to insulated panels can improve efficiency.

The Lancaster, 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.