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Best energy efficiency auditors near Duncan, SC

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

EnergySmith Home Performance
4.8(
164
)
Home Energy Audit

Serving Duncan, 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
37 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Holler Home Inspections LLC
Holler Home Inspections LLC
New to Angi
Home Energy Audit

Serving Duncan, SC and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Meet Your Home Inspector - Hi there! I’m Dylan Osborne, North Carolina Licensed and InterNACHI Certified Professional Home Inspector – CPI. I hold a Degree in Applied Science; Architecture & Construction Technologies, and 25 years of experience in land surveying, commercial property maintenance, and general manager for a 10-building, 75-unit condo complex in the US Virgin Islands. After Hurricanes Irma and Maria hit in 2017, I supervised the rebuild of the property tougher, stronger, and better than before – complete with a half-megawatt backup generator.\n\nMy knowledge, training, and experience allow me to bring a get-it-done-right attitude to every home inspection. I look forward to putting that knowledge and experience to work for you! \n828-760-7716

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

Serving Duncan, SC and surrounding areas

In business since 2008

Free estimates

Warranties offered

"They installed solar panels as per contract. They were on time and removed all material when done. I had roof damage from a storm and they repaired it at no extra cost. So far I am happy with this company and plan on using them again for house repair.
"
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 Duncan, 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 Duncan, SC and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"I got proposals from 3 other contractors, all had very similar higher cost approaches.  One of these contractors has been maintaining my system for years.  Energy Sharks is different, 
Phil is special, he has a technical skill and product knowledge to specify the right equipment to meet our needs that exceeded our expectations.  He is a master at understanding where to spend our dollars to get the most benefit.  Costly features that sound good but have little payback are vetted by Phil.  He knows.  He even thoughtfully considered how to maximize our Energy rebates and tax credits by selecting the right eligible products ($950). 
The workmanship of the installation was Excellent.  Danny arrived on time and completed in the time period (less than 1 day) during the one of the coldest days of the year.  The system works great and I could not be more pleased. 
Thanks for a Great Job!
"
Commercial Oven Wraps
LED & CFL Bulbs
Duct Sealing
Recommended by88%of homeowners
Avatar for HIS Heating and Cooling of the Midlands
HIS Heating and Cooling of the Midlands
4.6(
19
)
Energy Audit - For BusinessHome Energy Audit

Serving Duncan, SC and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"Professional and knowledgeable! His Heating and Cooling was on time and the service was done in a timely manner. I would recommend this small business over the large companies. The family oriented, friendly and top notch service cannot be compared. His Heating and Cooling will soon be a household brand!"
3.5 Ton Airtemp Gas Package System Installation
2 ton Airtemp Heatpump Condenser Installation
2 ton Airtemp airhandler 5kw heatstrips Installation
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+29

Recommended by94%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

Yes, energy-efficient options such as LEDs and solar-powered lights are available. These alternatives consume less electricity, resulting in lower utility costs. They are also more environmentally friendly due to their reduced carbon footprint and longer lifespan.

A whole-house humidifier can positively impact energy consumption by improving heating efficiency. During colder months, humidified air feels warmer, which allows you to lower your thermostat without sacrificing comfort. This adjustment can lead to significant energy savings as your heating system works more efficiently. However, it's important to use the humidifier judiciously, as excessive humidity could potentially strain your cooling system in warmer months.

Yes, barndominiums are energy-efficient as long as insulation professionals properly install quality insulation, windows, and doors. Utility bills for barndo living can be up to 50% lower than those for a traditional home.  Make your barndo more energy efficient by working with contractors and HVAC professionals to strategically place windows, doors, and heating/cooling systems. 

Upgrade to double-glazed glass or apply energy-efficient coatings to reduce heat loss and utility costs.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

The Duncan, 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.