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Best energy efficiency auditors near Williston, SC

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

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

Serving Williston, 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 Energy Sharks Heating & Air
Energy Sharks Heating & Air
4.4(
39
)
Energy Audit - For BusinessHome Energy Audit

Serving Williston, SC and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"It was incredible!!!! They showed up in the morning at 7:15 sharp with 4 well-equipped gentlemen and left 3 hours later with my two brand new York HVAC units completely installed, floors were left clean, everything was absolutely impressive! They were very respectful and professional. I couldn't be happier with this experience and the price was very fair!"
Commercial Oven Wraps
LED & CFL Bulbs
Duct Sealing
Recommended by88%of homeowners
Southeastern Solar Energy Corporation
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Williston, SC and surrounding areas

In business since 2005

Free estimates

Here at Southeastern Solar Energy Corporation, we love helping and educating our customers on the condition of their home. The homes throughout the United States are the single largest energy consumer in the world. Over sixty-five percent of U.S. homes are currently under-insulated, not insulated, or leaking an excessive amount of air and energy. Due to the air your home leaks every hour, over two-thirds of the oil or gas you purchase goes towards heating your backyard. Let us show you how to save money every minute of the day!

Shiloh Energy Projects LLC
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Williston, SC and surrounding areas

In business since 2021

Free estimates

Credit card accepted

Were honest, dependable and trying to lead the way for Solar Energy in the Upstate. We are local and are willing to travel. I am excited to work with you on your project. Reliability and quality are our mission. Solar panel installs is our expertise but check out all that we offer. Call for an estimate today!

Response time5 days
Avatar for Dominick Manns
Dominick Manns
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Williston, SC and surrounding areas

In business since 2021

Free estimates

Emergency services offered

Powur is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time10 mins
Response rate100%
Energy Efficiency Auditing FAQs, answered by experts

Typically, triple-pane windows made with krypton gas filling are the most energy efficient. A window’s frame, glass, design, and installation all affect its energy efficiency. These windows, in particular, are designed highly effectively in terms of their ability to insulate.

Keep the unit full but not overloaded, ensure door seals are tight, set correct temperatures, and avoid frequent door openings. Position the appliance away from heat sources for optimal performance.

String lights require electricity, but not an excessive amount, especially when compared to other lighting fixtures. LED rope lights, for instance, consume around one watt per foot. Running six or seven light strings simultaneously should only cost you around $10 to $15 each month. You can save even more money by remembering to turn off your lights during daylight hours. 

A blower door test shouldn’t take more than an hour, and most can be completed in less than 30 minutes. Expect the test to take longer once you start searching for leaks with thermal imaging or want to include sealing such leaks in the time estimate. The test doesn’t take much time and can’t be rushed, but it will take longer in large homes or those with many air leaks.

Services by electricians can quickly get expensive, but there are a few ways you can save money in the process:

  • Bundle multiple jobs done at the same time to save on trip fees or flat fees for individual projects.

  • Get at least three quotes for service to find the best deal.

  • Buy fixtures, switches, outlets, and other materials beforehand to avoid product markup.

  • If you feel comfortable with it, have an apprentice or journeyman complete the work under the supervision of a master electrician. These electricians in training tend to charge less per project.

The Williston, 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.