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TRUSTED BY DULUTH, GA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon20
    Verified energy efficiency auditing services reviews

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

Avatar for Energy Consulting Services, LLC
Energy Consulting Services, LLC
5.0(
44
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"I worked with ECS to have an energy audit done of my new home, and then worked with them to have some of the recommended upgrades done to improve energy efficiency. They were professional and responsive to all of my questions, and they walked me through a number of different options. In the end, I didn't choose to implement all of the changes that they recommended, but they still reduced the air leakage of my home by 21%, even coming back to take care of a few items that the work crew discovered while they were on site."
2014 Georgia Power Partner of the Year
Georgia Power awards
The team at ECS
Additional Photos
Additional Photos

+7

Response time1 day
Recommended by100%of homeowners
Avatar for Coolray Heating & Air Conditioning
Coolray Heating & Air Conditioning
4.8(
1,397
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA and surrounding areas

Approved

Super Service Award Winner

In business since 1966

Free estimates

Emergency services offered

"My HVAC Tech, Alex K, & his crew of (2) other Techs installed my new Carrier HVAC system back in April (2020) & after the Inspection from the City of Alpharetta. All of CoolRay’s Employees are superb & extremely friendly from David Poulos (Sr. Consultant) selling me the awesome energy-efficient system, to the Lead Service Technician in Alex K., & his (2) partners that installed my Carrier HVAC back in April. Meanwhile, CoolRay’s Permit Coordinator in Jennifer Richardson was SUPERB! She has terrific Customer Service skills, is extremely professional as well as friendly, she’s very easy to talk to over the phone while she goes above & beyond to help explain to me the answers to the questions that I had for her & therefore, she helped put me at ease. Sarah Clement was also very helpful by contacting me via my cell & via email in helping set up the minimal work that needed to be performed in order to pass the inspection by the City of Alpharetta. All in all, a FABULOUS GROUP OF EMPLOYEES for those that I mentioned above w/ CoolRay & these individuals should be recognized in some way?!! CoolRay should be thrilled & honored to have these individuals working for them, especially Jennifer Richardson, Sarah & Alex K. ??? Sincerely, A very satisfied Customer in Mike Nale ? (Alpharetta, GA)"
Response time4 hrs
Response rate100%
10 neighbors recently requested a quote
The Solar Guru
5.0(
1
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer \nservice that we provide to meet the consumer's needs. It is our mission \nto provide excellent workmanship and complete \ncustomer satisfaction from start to completion of a project. In order to \nunderstand the needs and expectations of our customers, we take great \ncare to work and communicate with every customer in a professional \nmanner. Our reputation is based on service, safety, \nand quality, regardless of how large or small the job.

Recommended by100%of homeowners
I Green Solutions Inc
4.8(
5
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

At iGreen Solutions Inc., we are your trusted local experts specializing in comprehensive exterior and interior home solutions. From roofing and seamless metal gutters to energy-efficient insulation and professional mold remediation, we pride ourselves on reliability, great communication, integrity, and quality workmanship. We believe in keeping our customers fully educated throughout every step of their project to ensure the best possible results. Whether it's a small residential repair or a large commercial project, we offer free estimates and look forward to earning your business!

32 neighbors recently requested a quote
Avatar for Energy Consulting Services
Energy Consulting Services
4.9(
17
)
Home Energy Audit

Serving Duluth, GA and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"Shane and his team were great. They spent a lot of time discussing the audit process and results with me. Made the rebate process so easy! Can't say enough positive things about them!"
Lead Auditor William Crawford
blower door testing equipment
interior of old ductwork is filthy
encapsulated attic
leaky French doors

+6

Recommended by100%of homeowners
Avatar for No Limitations Home Energy
No Limitations Home Energy
5.0(
55
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Very efficient, explained everything he was doing and why, very easy going and professional. This company does not over charge you for their service. I highly recommend this company"
Recent Projects
Recent Projects
Recent Projects
Recent Projects
Recent Projects

+42

Response time2 hrs
Response rate98%
Recommended by87%of homeowners
Nier Building Inspections
5.0(
32
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA and surrounding areas

In business since 2002

Credit card accepted

"After working with Nier Building Inspections on a Foundation, Pre-Drywall and Post Construction inspection I have realized that I would not be able to get a better house from my Builder. The attention of inspectors to detail is astonishing. They have very good knowledge of the codes, they have all the needed certificates, and they work with you on different levels to get the work done on time. They are present when you want them and they spend all the time needed and answer to any questions you have. The final report is also amazing. They are transparent with payment and the work delivery. Top Quality and Fair."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by100%of homeowners
Avatar for ADT Solar
ADT Solar
4.4(
111
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA 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 Aire Serv of Suwanee
Aire Serv of Suwanee
4.9(
15
)
Energy Audit - For BusinessHome Energy Audit

Serving Duluth, GA and surrounding areas

In business since 1992

Emergency services offered

Credit card accepted

At Aire Serv, we don’t just provide residential and commercial heating and air conditioning services; we make people’s lives easier. Better.\nFrom air duct cleaning to heater repair and air conditioning replacement, we provide services that keep the air you breathe clean and keep your home or business at the perfect temperature. Our technicians are like EMTs for your HVAC, offering a full range of heating, cooling, commercial, and other services 24 hours a day, seven days a week.

Recommended by100%of homeowners
Showing 1-10 of 40
Energy Efficiency Auditing FAQs, answered by experts

Not all homes are suited for solar panel systems. Older roofs or those in poor condition may need repairs or replacement before solar panels can be installed. Some other factors to consider are the amount of sunlight your roof receives, the roof’s orientation and pitch, and any shading from nearby trees or buildings.

The difference between an energy auditor and a home inspector is primarily in the purpose of the inspection. The energy auditor conducts tests in your home to determine the energy efficiency levels in areas like windows, insulation, and doorways. The auditor then makes recommendations for ways to improve a home’s energy efficiency. 

A home inspector examines various structures of your home to determine that everything is up to code and gauge the condition of features like the roof, foundation, HVAC, and electrical. The home inspector reports on the overall home and makes repair recommendations.

No, it isn’t necessary to have energy-efficient windows. However, if you care about your energy bill and making your windows more energy efficient, fixing any heat, UV, or air transfer issues is an excellent way to lower your bills and keep your house cooler in the summer and warmer in the winter.

The extra insulation helps reduce energy costs by minimizing drafts and temperature exchange between indoors and outdoors.

The answer is a resounding yes, as dishwashers save significant water and energy compared to washing dishes by hand. The difference is so drastic in fact that those who use energy-efficient dishwashers can expect savings of over $450 per year. This is because dishwashers use less water, they wash at a higher temperature than a hand rinse, and you don’t need to rinse them after washing. New dishwashers use around 4 gallons per load, whereas washing by hand can use up to 2 gallons per minute.

The Duluth, GA homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.