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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon45
    Verified energy efficiency auditing services reviews

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

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

Serving Mclean, VA 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 Comfenergy
Comfenergy
3.9(
50
)
Home Energy AuditEnergy Audit - For Business

Serving Mclean, VA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"I am so impressed with Comfenergy. The sales rep explained why we only needed to improve the insulation at the top of our unfinished basement walls, not the whole thing as another company recommended. So it was considerably less money than we thought we’d need to do the job. Brent and his assistant arrived on time to do the work and were so quiet that we weren’t inconvenienced in any way. I definitely recommend this company."
Attic before
Attic after
Historic Waterford Home
Historic Plaque
Crawl space before

+6

Response time1 day
114 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for 3 PROS Basement System
3 PROS Basement System
4.0(
39
)
Home Energy AuditEnergy Audit - For Business

Serving Mclean, VA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Very easy to work with. Their repncame out and did a free home energy audit in a timely manner. They then go over over everything they find. He walked me through everything he found. The list he came up was priced out but was definitely a little more than I wanted to spend...but he worked with me to figure out what items to fix that would give me the most bang for my buck at the cost wanted to spend. We definitely notice an improvement in the house from the fixes. I would recommend these guys."
Crawl Space Before Picture
Finished!
Beautiful Encapsulated Crawl space
SaniDry Sedona
Spray Foamed walls

+32

Response time1 day
83 neighbors recently requested a quote
Recommended by86%of homeowners
Brighter Day VA
4.0(
1
)
Home Energy Audit

Serving Mclean, VA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

Brighter Day VA is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 1 years of experience serving Falls Church, VA and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

Response time4 days
Reliance Repair LLC
4.9(
68
)
Energy Audit - For BusinessHome Energy Audit

Serving Mclean, VA and surrounding areas

Free estimates

Credit card accepted

"Our LG above stove microwave stopped heating. Lucky from Reliance Repair came out and gave us an estimate. He arrived on time. His estimate was reasonable. When he received the part, he returned on time and worked diligently to repair the problem. He was polite, respectful. Overall, an excellent repair experience. Highly recommended."
Additional Photos
Recommended by98%of homeowners
Avatar for Stephen Palmer Electric Inc
Stephen Palmer Electric Inc
4.6(
144
)
Energy Audit - For BusinessHome Energy Audit

Serving Mclean, VA and surrounding areas

In business since 1994

Credit card accepted

"the tech arrived on time he looked over the issue, provided feedback on the way to handle the problem and went to work. When the tech was done I walked through the area requesting service and was happy with the outcome"
Old House Specialists
We pride ourselves on working quickly, cleanly, and efficiently.
Recommended by87%of homeowners
Showing 1-10 of 50
Energy Efficiency Auditing FAQs, answered by experts

While you can perform many routine home maintenance jobs yourself, it’s often a good idea to bring pros in for certain tasks. HVAC maintenance, fireplace and chimney inspections, foundation repairs, and roof inspections and repairs should be handled by professionals who know what to look for and can safely perform repairs. You may also find it helpful to hire a local house cleaning service to help with deep cleaning.

When installing a new furnace, it's a good time to consider other projects that can enhance your home's energy efficiency. A great first step is to get a home energy audit, which will identify areas for improvement. Common recommendations include sealing or replacing windows and adding insulation to the attic. These upgrades can help you save money on monthly utility costs. You might also consider installing a smart thermostat to make heating your home more convenient and efficient.

An average, 400-square-foot electric heated driveways consume approximately $3 per hour in terms of electricity. The price may slightly fluctuate depending on your local energy cost. A simple formula to calculate your heated driveway’s total wattage consumption is by multiplying the square footage by 50 watts and then dividing it by 1,000 to get the kilowatt number. Multiply that with your local energy cost per hour and there you have the hourly operating cost.

Yes, most audits include a report with prioritized recommendations for improving energy efficiency. Confirm with your auditor.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

The Mclean, VA homeowners’ guide to energy efficiency auditing services

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