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Verified Reviews for Energy Efficiency Auditing pros in Sumter, SC

*The Angi rating for Energy Efficiency Auditing companies in Sumter, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

*The HomeAdvisor rating for Energy Efficiency Auditing companies in Sumter, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

Last update on January 29, 2026

Find Energy efficiency auditors in Sumter

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

Serving Sumter, 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
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Avatar for South Carolina Solar Project
South Carolina Solar Project
5.0(
9
)
Energy Audit - For BusinessHome Energy Audit

Serving Sumter, 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
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Avatar for Air Time of the Carolina's
Air Time of the Carolina's
4.3(
6
)
Energy Audit - For BusinessHome Energy Audit

Serving Sumter, SC and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"They were very reasonable and professional. I have used them again on another property. Was very satisfied. They are definitely my HVAC provider."
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Recommended by83%of homeowners
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Avatar for Professional Heating & Cooling
Professional Heating & Cooling
3.5(
8
)
Energy Audit - For BusinessHome Energy Audit

Serving Sumter, SC and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Great company from the office personnel to the installers and Techs! Highly recommend professional heating and cooling to anyone!"
Recommended by66%of homeowners
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Southeastern Solar Energy Corporation
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Sumter, 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!

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Energy Efficiency Auditing questions, answered by experts

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

R-value measures an insulation material's thermal resistance, indicating its ability to resist heat transfer. A higher R-value signifies better insulation performance because the material is more effective at slowing heat flow. The R-value depends on the type, thickness, and density of the insulation material, such as fiberglass, foam, or cellulose. Each inch of insulation typically provides an R-value between 3 and 8. There is no single universal R-value; the optimal choice depends on your climate zone. Colder climates require a much higher R-value than warmer ones to maintain energy efficiency, keep the home warm in winter and cool in summer, and manage costs.

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. 

If you want a new boiler that’s going to help lower your fuel bills, you should buy one that has a high energy-efficiency rating. For example, a boiler that is rated “A” uses at least 90% of the energy created by the boiler. And in order to enjoy the best performance, it’s important to have it installed properly by a highly-rated tech.

There are a couple of ways you can save on the cost of your home energy audit. First, find out if you qualify for programs like the Department of Energy’s Weatherization Assistance Program for low-income households. Next, check with your local utility company to find out if you qualify for any local rebate programs to offset the cost of this helpful service.

The Sumter, 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.

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