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TRUSTED BY OLNEY, MD HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon65
    Verified energy efficiency auditing services reviews

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

Avatar for EDGE Energy
EDGE Energy
4.5(
51
)
Home Energy Audit

Serving Olney, MD and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Edge Energy did an energy audit for us, then sealed the house, installed a new roof with excellent insulation, and an ERV fan to ensure fresh air. They were a delight to work with throughout, very friendly and professional. We needed some follow up work due to quirks in the house, not bad work by Edge, and they did it promptly and without charge. I couldn't recommend them more highly."
Infrared finds air leaks!
All PM's are certifed under BPI, NCI, RESNET, NAHB
Air-sealing and insulating attics is our SPECIALTY
Locally Owned Business
Weatherization Truck

+5

Recommended by89%of homeowners
Avatar for Elite Thermal East
Elite Thermal East
4.3(
105
)
Home Energy Audit

Serving Olney, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"I had a full house evaluation. Elite Thermal was able to use that to get me a significant discount. They came and did the service in in one day and then returned a few weeks afterwards to find tune and the leaks that were identified on the follow up blower test. They changed the wrong exhaust fan and then did the right one at no additional charge. I would definitely work with them again. Actually, they have done an evaluation and an estimate on my second home and I expect to have them start soon."
Cellulose Blown Insulation - Rem/Repl Before/After
Cellulose Blown Insulation - Before/After
Cellulose Blown Insulation - Before/After
Fiberglass Batt - Before/After
Fiberglass Batt - Remove & Replace - Before/Af

+5

Response time1 day
Response rate95%
77 neighbors recently requested a quote
Avatar for BlueStar Air Mechanical Inc.
BlueStar Air Mechanical Inc.
4.9(
32
)
Energy Audit - For BusinessHome Energy Audit

Serving Olney, MD and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Very satisfied with responsiveness, punctuality and professionalism! Danny was able to squeeze us into Blue Star's full schedule at a time that worked for us and called before the visit for clarification about the problem, and after the visit about how things went. John called before arrival to let us know about exact timing, and was very thorough in investigating the problem and then explaining the situation. After consultation, he was able to repair our system. John also discussed what to look out for in case there are problems in the future. We have had our AC unit serviced regularly by other companies, but we will never use those other companies again. Blue Star is superior in every way! Cannot recommend highly enough. Thank you, Danny and John!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time3 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Lumeco Energy
Lumeco Energy
5.0(
5
)
Home Energy Audit

Serving Olney, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Lumeco did an awesome job on my attic insulation. They also ran a test to see how much my air leakage reduced. Highly recommend this company. They have good pricing too."
Attic Encapsulation 1
Attic Encapsulation 2
Attic Encapsulation 3
Attic Before 1
Attic Pre-Weatherization

+5

Response time2 days
Response rate96%
10 neighbors recently requested a quote
Avatar for Complete Home Solutions, LLC
Complete Home Solutions, LLC
3.9(
85
)
Home Energy Audit

Serving Olney, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Very professional. Fully explained the process before starting and showed photos of the areas that needed insulation in my home. Before and after photos. Used energy company rebates to reduce my out of pocket expenses and did follow up evaluation. I saw the change in my energy bill! Thanks!"
 Stone Front of Addition
 Kitchen
 .
 After
Screened Porch and Deck

+93

Response time1 day
49 neighbors recently requested a quote
Recommended by73%of homeowners
Elysian Energy, LLC
New to Angi
Home Energy Audit

Serving Olney, MD and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

Elysian Energy, LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 50 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! \n \n

Response time1 day
Avatar for Home Energy Saving Solutions
Home Energy Saving Solutions
5.0(
92
)
Energy Audit - For BusinessHome Energy Audit

Serving Olney, MD and surrounding areas

In business since 2010

Warranties offered

Credit card accepted

"Mohammed handled our project—sealing and insulating our attic. He was very knowledgeable about the best way to accomplish the task in an older home such as ours; and he also ensured that our project qualified for relevant energy rebates. He was professional and courteous in answering all our questions and completed the project in one day. We highly recommend HESS and Mohammed El-Goul."
Common air leaks
Thermal image picks up moisture
Common air leaks
Thermal image picks up moisture
Thermal image showing air leakage

+1

Response time2 days
Response rate100%
Recommended by100%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

Yes, energy-efficient windows really can make a difference. As long as energy-efficient windows are properly installed and maintained, they can reduce your energy bill and offer significant savings.

Yes, these services often increase home value by preventing moisture-related issues and enhancing the usable space in basements or crawlspaces.

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. 

Costs depend on the property size, audit complexity, and whether additional testing (e.g., blower door) is included.

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 Olney, MD homeowners’ guide to energy efficiency auditing services

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