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Best energy efficiency auditors near Sumter, SC

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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

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

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 FAQs, answered by experts

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.

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.

The three levels of home energy audits include:

  • Level 1: Review of your energy bills and home for signs of energy inefficiency and areas for improvement. The average cost range is $0.08 to $0.12 per square foot.

  • Level 2: A level 2 ASHRAE energy audit costs $0.12 and $0.35 per square foot. In-depth analysis of your energy usage and provides a report of cost-saving changes.

  • Level 3: Comprehensive analysis and detailed recommendations for ways to improve your home’s energy efficiency. A level 3 audit costs about $0.36 to $0.50 per square foot.

Blower door tests are measured in a few different ways, but the most popular are air changes per hour (ACH) and cubic feet of air (CFM) moving through the house per hour. A good ACH score is less than 2ACH, but 1ACH is better. This means the house experiences a total air change within 60 minutes (for 1ACH). For 2ACH, there’s a complete change every 30 minutes, and so on. CFM scores are similar in that a lower score means less air change, and therefore less leakage.

There are energy-efficient options when building a cottage. Select green building materials, high-performance insulation, and energy-efficient windows when designing your cottage. Options such as solar panels, efficient HVAC systems, and LED lighting can lower your utility bills and reduce your environmental impact. Many builders offer energy-efficient upgrades as part of the design process.

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

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