
Connecticut Energy Services
Helping Builders and Homeowners Achieve High-Performance, Energy-Efficient Homes
At Onega Inspection Services, we provide certified energy efficiency testing for residential builders, developers, and homeowners throughout Fairfield County, Connecticut, including towns like Danbury, Stamford, Bethel, Brookfield, Newtown, and Ridgefield.
Whether you’re building a new home or upgrading an existing one, our energy services help you meet state energy codes, lower utility bills, and qualify for valuable incentives.
Why Energy Services Matter in Connecticut
Connecticut continues to lead the way with advanced energy codes and growing demand for high-performance homes. Local building departments in cities such as Danbury and Stamford now require blower door and duct leakage testing to demonstrate compliance with the IECC energy code. In addition, energy efficiency is becoming a key selling point in towns like Bethel, New Canaan, and Wilton, where buyers are prioritizing comfort and sustainability.
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Whether you’re a builder looking to meet CT energy code requirements, or a homeowner interested in reducing heating and cooling costs, our energy testing services provide the documentation and guidance you need to make smart decisions.

The Home Energy Rating System (HERS) Index is the nationally recognized standard for measuring residential energy efficiency. A lower HERS score means lower energy use and higher performance.
We work with builders in Stamford, Danbury, and other Fairfield County towns to provide certified HERS Ratings that meet code requirements and help qualify for Energy Star® or rebate programs through Eversource and United Illuminating.

Blower door testing is required on most new construction and additions throughout Connecticut, including towns like Brookfield, Trumbull, and Redding.
We use calibrated equipment to measure how airtight your building envelope is, identifying leaks that can waste energy and reduce comfort. This test is essential for passing local inspections and maximizing HVAC system performance.

Leaky ducts can waste up to 30% of your heating and cooling energy. We perform duct leakage testing in both rough-in and final stages to ensure your ductwork meets state code and utility rebate requirements.
This service is frequently requested by builders in Bethel, Newtown, and Monroe to help ensure homes are built to a high-performance standard.

Qualifying for the Energy Star® Certified Homes program in Connecticut offers more than just marketing appeal—it’s often required to access incentive funding through local energy efficiency programs.
We handle the verification, testing, and reporting needed to certify homes in towns like Ridgefield, Westport, and beyond.
Why Choose Onega Inspection Services
With years of experience and a deep understanding of Connecticut’s evolving energy code, Onega Inspection Services is your trusted partner for residential energy testing and certification. We proudly serve clients across Fairfield County, delivering prompt, accurate, and professional service.
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Whether you’re building a single-family home in Danbury, renovating a duplex in Stamford, or working on a subdivision in Bethel, we’ll help you navigate the energy code and ensure your project meets or exceeds expectations.