About Energy Services Group —
Delaware's Energy Efficiency Experts

Energy Services Group is Delaware’s DOE Certified Verifier for home energy efficiency. Here’s what that means and why it matters.

DOE Certified Partner & Verifier

We are an official U.S. Department of Energy Efficient New Home partner and certified verifier.
Partner ID: 2782 / 866

What this means: We are authorized to perform official energy assessments, HERS ratings, and compliance testing to federal standards. Unlike typical contractors, we don’t just install—we certify and validate that homes meet DOE energy efficiency requirements.

By the Numbers

  • 2,700+ homes certified across Delaware and the tri-state area
  • Operating since 2015 in New Castle County
  • BBB A+–accredited business

Experts You Can Trust

Our experienced professionals understand how attic insulation impacts comfort, HVAC performance, and energy efficiency. Each project is approached with careful evaluation, clear recommendations, and professional installation practices.

Energy Services Group applies industry standards and proven methods to ensure attic insulation is installed correctly and performs as intended over time.
We Have the Following Certifications:

Recognized Contractor

We are a recommended contractor for major utility rebate and assistance programs, including:

  • Delmarva Power energy efficiency programs
  • PECO energy savings programs
  • Delaware weatherization assistance programs (ECA / LIHEAP)

What We’re Authorized to Do

As a DOE Certified Verifier, we provide:

  • Official HERS ratings for new construction
  • ENERGY STAR® certification for homes
  • Third-party verification for builders
  • Home energy audits compliant with federal protocols
  • Weatherization services for income-eligible programs

Explore Our Services

We’re Prepared to Help with a Range of Energy-Related Needs

Insulation Services

Keep your home comfortable year-round with professional attic, crawl space, spray foam, blown-in fiberglass, and insulation replacement services.
Learn More

Home Energy Audits

Find out exactly where your home is losing energy. Our audits identify issues and help you qualify for rebates through Energize Delaware.
Schedule an Energy Audit

Air Sealing & Testing

Drafts and leakage waste energy. Our blower-door testing and air-sealing solutions locate the problem and seal it for good.
Explore Air Sealing Services

Duct Sealing & Testing

Leaky ducts can waste up to 30% of your heating and cooling. We test and seal ductwork to boost system efficiency.
Get Duct Sealing Services

New Construction Services

We provide HERS ratings, energy-code compliance, and insulation for new builds across Delaware and nearby areas.
View New Construction Services

Weatherization Programs

We help homeowners access weatherization services, including support through the Weatherization Assistance Program (WAP).
Learn About Weatherization

What Makes Us Different

Most insulation contractors focus on installation. We verify performance to federal standards and provide certified documentation. Whether you’re a homeowner looking to reduce energy bills, a family qualifying for weatherization assistance, or a builder requiring ENERGY STAR® certification, we apply the same technical rigor and compliance expertise.

Schedule An Appointment

Improve comfort and energy performance by having your attic insulation professionally evaluated. Energy Services Group brings decades of hands-on experience and a detail-focused approach to every assessment.
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