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Top-Rated Energy efficiency auditors in De Graff - Updated Nov 2026

Avatar for Renewable Engineered Systems
Renewable Engineered Systems
4.7(
12
)
Energy Audit - For BusinessHome Energy Audit

Serving De Graff, OH and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"Wonderful, it was a very quick and easy process. Brian talked us through it and in no time we had a 3KW system mounted on a frame in the garden and the invertor installed in the basement. Brian talked us through working with our power company to get the system checked and approved and we now get credits from the power company for power we provide to the grid. In addition we are set up to get Solar Renewable Energy Credits (SRECs) payments for providing clean energy. We also got a free Energy Audit which helped locate some problems areas we were able to fix. The system has basically cut our energy costs in half. I have hesitation in recommending them to anyone interested in solar energy."
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+14

Recommended by100%of homeowners
northshore pressure washing
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving De Graff, OH and surrounding areas

In business since 2011

Free estimates

We are one of the largest energy consulting companies in the country. We offer Free Energy Forcasts to businesses across a wide variety of climate zones. When implemented, our recommendations can consistently save you 17-22% on your energy costs, in the first year. We offer a variety of products, from an all-inclusive fixed product, to a variable option and a hybrid. Call today to see what solutions we can offer you! References are available from very happy clients.

Avatar for Primary Source Home Inspections LLC
Primary Source Home Inspections LLC
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving De Graff, OH and surrounding areas

Free estimates

Primary Source Home Inspections is a licensed, InterNACHI-certified home inspection company based in Springboro, Ohio, serving Montgomery, Warren and the surrounding Southwest Ohio counties. Owner Charles Demasie spent sixteen years as a teacher, and he brings that same care to every inspection: you'll understand what he found and what it means. Services include pre-purchase, pre-listing, new construction, pre-warranty and multi-unit inspections, plus radon testing (72 hours of continuous monitoring), lab-analyzed mold testing and wood-destroying insect inspections. Clear, photo-rich reports within 24 hours. Discounts for military, veterans and first responders. Call anytime for a free quote.

Energy Efficiency Auditing FAQs, answered by experts

ENERGY STAR®-certified windows are the most energy-efficient windows on the market. This certification means that the window meets strict efficiency guidelines set forth by the Environmental Protection Agency. While they might cost more upfront, they can save you money on your energy bills in the long run. ENERGY STAR®-certified windows lower household energy bills by an average of 12% annually.

Solar water heating systems are not one-size-fits-all. You'll likely work with a team of experts to get the job done—including solar panel installers, plumbers, and water heater installers. A specialist will help you decide if a passive or active system is best for your local weather, home layout, roof stability, and your budget.

A small sump pump running infrequently uses an average of 10 kilowatt-hours (kWh) of electricity per month. The average cost for electricity is $0.171 per kWh. The size and use frequency affect how much electricity it uses. Sump pumps average one-third to one horsepower (hp) motors. One hp is equal to 745.7 watts. Watts multiplied by the time your pump is running divided by 1,000 equals your average kWh. Multiply kWh by your average cost of electricity. In areas with high rain or a marsh basin, the average cost can be as high as $15-$25 a month.

Yes, Tesla Powerwalls are worth the upfront costs, as you can recoup your investment within six to eight years. Plus, they provide peace of mind that you'll have power during a power outage, and, depending on the system you install, you can become energy-independent. While they may be more expensive than other solar power systems, they offer higher battery capacity and lifespan.

Yes, advising on models that save electricity and reduce utility bills.

The De Graff, OH homeowners’ guide to energy efficiency auditing services

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