Builders in Georgia often run into DET on permits, inspection notes, or project checklists. It sounds technical, but the idea is simple. DET verification is part of the process for confirming that a new home meets required energy testing standards. This blog breaks it down in plain language.
We created this guide to help builders and contractors understand what DET means, why it matters, and how it relates to field testing. If you work on new construction, clear answers can save time and help projects move forward with confidence.
DET stands for Duct and Envelope Tightness. In Georgia, it refers to testing that checks how tightly a home is built and how well the ductwork holds air. These tests support energy code compliance and help confirm that a new home meets state and local standards.
In simple terms, DET looks at two key parts of the house. The first is the building envelope, which includes walls, ceilings, windows, and doors. The second is the duct system that moves heated and cooled air through the home. When both perform well, builders are better positioned to meet code requirements and deliver stronger home performance.
DET includes two main checks. One is the blower door test, and the other is duct testing. Together, they measure duct and envelope tightness and show whether the home meets the required threshold.
A blower door test measures how much air moves through the building shell. Many builders also search for terms like “blower door test” in GA when seeking Georgia-specific help. Duct testing measures leakage in the HVAC ductwork. These duct leakage tests help confirm that conditioned air stays where it should. The full blower door and duct process gives builders the documentation they need for code approval.
DET is not just a box to check. It plays a big role in scheduling, inspections, and final documentation. When builders understand the process early, they can better coordinate with project teams and avoid delays near completion.
At Air Tight Solutions, we work only with new construction. That focus helps us support builders with practical testing, clear reporting, and strong knowledge of IECC standards across multiple states. Our team brings BPI-certified and IDL credentials to every project, along with hands-on experience that ensures accurate results. We also stay active in education through SCALT and other industry groups, helping builders, contractors, and inspectors stay informed as standards evolve.
If you want a smoother testing process, it helps to prepare before the final build stage. Here are four steps that make a difference:
Understanding DET verification helps builders make smarter decisions during construction. When you know what gets tested and why it matters, planning and managing the process becomes easier.
Air Tight Solutions helps builders across Georgia with dependable testing for new construction. We bring multi-state IECC expertise, certified knowledge, and a practical approach that supports quality, compliance, and efficient project flow.
We offer next-day scheduling for most services. Contact us to check availability and secure your appointment.
The base price covers the testing process and all required documentation for compliance and inspections.
Ensure the home has power, and confirm that all mechanical systems are fully installed before testing to guarantee accurate results.
We do not provide warranties for our services, but our testing and documentation are designed to meet all compliance requirements.
We don’t manage permits directly, but our detailed documentation can be submitted to your county for final inspections and approvals.