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TRUSTED BY DELAWARE, OH HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon31
    Verified energy efficiency auditing services reviews

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

Avatar for Greene Solutions, LLC
Greene Solutions, LLC
4.6(
53
)
Home Energy Audit

Serving Delaware, OH and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"We contracted with Greene Solutions a couple of years ago to complete an energy audit and to map out a series energy saving projects to achieve desired energy efficiency and comfort goals for our 30 year old home. The last two projects were completed in September 2019. First vapor seal our partial basementâ s crawl space floor and walls and second to use the unique Aerosealï Technology to internally seal our gas furnace/air conditionâ s ductwork. Greene Solutionâ s four man team (Jason, Owen, Pearse and Harvey) arrived promptly at 8:30 am and began both projects. They worked very effectively and efficiently as a team to accomplish each project in a professional way always respecting our homeâ s interior and keeping us abreast of their progress. We are especially excited to have the Aerosealï Technology applied to our â leakyâ duct system as it has vastly improved the performance and efficiency of our Lennox furnace and air conditioning systems. Thank you Thomas and the Greene Solutions team for your excellence in developing our plan and in the completion of our latest projects. Well DONE !! Bob & Barbara Hammond Dublin, Ohio"
Response time2 days
Recommended by97%of homeowners
Avatar for Bradford Xteriors
Bradford Xteriors
4.5(
655
)
Energy Audit - For BusinessHome Energy Audit

Serving Delaware, OH and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"Could not be more happy. Everything just went as well as it could have during this crazy COVID stuff. Windows went smooth, roof in a day and siding was a few days. Entire project start to finish was 8 days and the clean up was exceptionally well done. Did not even know they were here. Definitely recommend Bradford Xteriors to anyone needing things done. Jason, the owner is very wired at all time but none the less a great guy and now friend."
Nursing home Roof
Nursing home Roof
Bradford Xteriors
Bradford Xteriors
Bradford Xteriors

+1

Recommended by89%of homeowners
Columbus Comfort Heating & Cooling LLC.
4.5(
8
)
Energy Audit - For BusinessHome Energy Audit

Serving Delaware, OH and surrounding areas

In business since 2017

Free estimates

Emergency services offered

"Great job by Tim the technician at Columbus Comfort Heating & Cooling and Mark and the rest of the staff as well for setting up the appointment on such short notice. Overall I am very pleased with the quality of service and the price. I will definitely use them again in the future. I am a very happy customer."
Additional Photos
Recommended by100%of homeowners
Hunter Construction Co.
5.0(
7
)
Energy Audit - For BusinessHome Energy Audit

Serving Delaware, OH and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"It is with sincere enthusiasm and pleasure that we express our deep satisfaction with the renovation of a large part of our home by Hunter Construction Company. We worked hand in hand with Mr. Brad Holbert, the owner. He had a craftsman's view of exactly what was needed by way of design to have the renovation fit in perfect accord with our beautiful, old home. He was fast, efficient, and has an amazing eye for detail.
Ours was a large project but he kept control of all facets of construction and finished on time. We found Mr.Holbert to very pleasant and trustworthy, and anyone would do well to place their project in his Company's very capable hands.

"
Recommended by100%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

DIY is possible with basic tools. Professional audits provide comprehensive assessments and tailored recommendations.

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

Attic and whole-house fans improve a home's energy efficiency and comfort. They ventilate hot air from the attic, which reduces peak cooling loads, lowers reliance on air conditioning, and decreases indoor temperatures. This improved air circulation and expedited heat exit helps lower cooling costs, balance moisture levels, and enhance overall natural airflow, contributing to the efficient operation of other home equipment.

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.

You can save money on heating oil through a combination of improving home efficiency and smart purchasing strategies.

Home Efficiency and Usage:

  • Improve Insulation: Ensure your home, especially the basement and attic, is well-insulated and sealed against drafts to prevent heat leakage.

  • Manage Your Thermostat: Use a properly calibrated and programmable thermostat. Lower the temperature by a few degrees, particularly when you are away from home or asleep.

Purchasing Strategies:

  • Buy in the Off-Season: Order heating oil during the summer months when prices are generally at their lowest. This strategy is most effective if you have a large primary tank or a separate storage tank to accommodate bulk deliveries.

  • Consider a Delivery Contract: Some companies offer contracts with a set price for the term. This can lead to savings if market prices for oil increase, but you might pay more if prices drop.

The Delaware, 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.