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Top-Rated Home energy auditors in Warrenton - Updated Nov 2026

Avatar for Home Energy Saving Solutions
Home Energy Saving Solutions
5.0(
92
)
Home Energy Audit

Serving Warrenton, VA 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
Avatar for Evergreen Electric LLC
Evergreen Electric LLC
4.9(
36
)
Home Energy Audit

Serving Warrenton, VA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Phenomenal job by Evergreen.  Analyzed the current box and gave me options, best, most cost effective was upgrading the 40 yr old CB panel and adding a generator interlock.  Work was done perfectly and efficiently...now when the neighborhood goes dark (all too often when the weather is bad in Northern VA), we have power and AC.  Thanks Evergreen."
Recommended by100%of homeowners
Avatar for CSI Home and Commercial Services
CSI Home and Commercial Services
4.6(
80
)
Home Energy Audit

Serving Warrenton, VA and surrounding areas

In business since 1995

Free estimates

Credit card accepted

"CSI did a thorough inspection, provide analysis, detailed report of findings and provided pictures of the areas with issues as well as aerial views of the house, lot and surrounding area. We are definitely hiring them for the Final Home Inspection and analysis."
Additional Photos
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+5

Recommended by97%of homeowners
Avatar for Anthony's Hvac & Home Improvement
Anthony's Hvac & Home Improvement
4.9(
24
)
Home Energy Audit

Serving Warrenton, VA and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"Antony hvac came into my home they was very Professional. They took good care of my home. The work they did was nice. They installed my heating and air conditioning system. My house is much cooler. I will hire them again."
Remodeling - Kitchen & Bathroom Project
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project

+74

Recommended by100%of homeowners
Avatar for Energy Wise Heating & A/c inc.
Energy Wise Heating & A/c inc.
4.9(
15
)
Home Energy Audit

Serving Warrenton, VA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"My furnace is very old and quit working.  I called several HVAC companies and received  quotes to replace ranging from $1,800 to $11,000.  I found Energy Wise on Angies and called Matt.  He returned my call within 30 minutes and was at my house within 24 hours.  After his inspection, he stated that the furnace was still in good shape and could offer me a  number of years service before buying a new unit.  He suggested replacing the motor and fan and cleaning internal parts.  All of this was completed by the end of the next day.
Matt is very professional, punctual, courteous and a pleasure to deal with.  Not only did he save me a great deal of money, I now have a heating/air conditioning system that has never worked better.
"
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+12

Recommended by100%of homeowners
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FAQs for home energy audit projects in Warrenton, VA

To prepare for a home energy audit, begin by preparing your space. Clear any obstructions around the attic, basement, ducts, crawl space, appliances, windows, and doors. Gather all your energy bills from the last year and information on home upgrades if you’ve made any changes. If you’ve previously had an audit done, include that information as well.

Finally, be prepared to discuss any questions or concerns you have. If you’ve noticed a rise in your energy bills, hot or cold areas in your home, or unusual sounds from ducts or appliances, make a list to discuss with your auditor.

How often you should get an energy audit depends on the age and condition of your home. New homes with no issues are recommended to get an audit every five years, while older homes should audit every two to three years. If you’ve noticed any changes to your energy bills or other areas of concern, you should get an audit as soon as possible. It’s also a good idea to conduct an audit if you’ve made changes or upgrades to your home, such as installing a new furnace, windows, or doors.

An energy audit takes three to four hours to complete. Your auditor sets up testing equipment, conducts an exhaustive walk‑through inspection, and performs all required evaluations to identify energy loss points. The audit follows a systematic review that includes visual assessments, mechanical tests, and detailed documentation, resulting in a precise report of improvement recommendations.

You can schedule a home energy audit any time of the year—it all depends on what's convenient for you. That said, timing it right can help you tackle issues before they impact your comfort and bills. If you live in a colder climate and want to avoid high heating costs in the winter, getting an audit in the summer allows you to make improvements before the temperature drops. On the contrary, if hot summers are your concern, a spring audit can help you stay cool and save on air conditioning.

To find a qualified home energy auditor, start by searching for local energy auditors with great reviews and recognized certifications like those from the Building Performance Institute (BPI). These credentials ensure they're qualified and can help you qualify for rebates. Don't hesitate to ask about their audit methods and schedule a consultation to see if they're a good fit for your needs. Doing some research upfront helps you get top-notch service and maximize your energy efficiency.

Once you have your energy audit report, it's time to take action. Review the recommendations and prioritize the upgrades that make the most sense for your home and budget. Reach out to experienced pros to get quotes and discuss how they can help. By making these improvements, you'll boost your home's energy efficiency, lower your utility bills, and enjoy a more comfortable living space.