HVAC Duct Leakage to Outside Testing in Florida

Leaky ducts can create a world of problems that can easily fly under the radar and lead to costly repairs in the future. You may not notice right away, but blower door testing can often lead to the discovery of duct leakage issues that require further testing. Whether you find that you will have to have duct leakage to outside testing completed or you simply choose to have it completed even if it doesn’t become mandatory, Calcs-Plus is ready to help. We have completed thousands of projects and tested countless HVAC systems since 1991, giving us unmatched insight and the ability to recommend effective, code-compliant solutions while there’s still plenty of time to fix them.

What is Duct Leakage to Outside Testing?

Unlike blower door testing, duct leakage to outside testing isn’t always required. The only instances where this test is required are when it is specified in Form R405—which is part of Florida’s Energy Code compliance pathway—or when it is explicitly noted on the submitted energy code documents that this test is needed to obtain a Certificate of Occupancy. Duct leakage to outside testing must be completed after blower door testing and works by pressurizing or depressurizing the home to measure how much air escapes from the ducts to the outside of the home’s air barrier (including unconditioned spaces within the home). This test is completed after blower door testing, but it can be done on the same day as the blower door testing.

Why Choose Calcs-Plus for Duct Leakage Testing?

Calcs-Plus has decades of experience completing duct leakage testing throughout the state of Florida, giving us the considerable experience and hyperlocal knowledge to quickly guide you to code compliance if duct issues are discovered. We have hands-on field knowledge and understand exactly how HVAC systems are installed, inspected, and used in Florida. Plus, we are:

• Florida Code Experts: We specialize in Florida’s energy code and know exactly when duct leakage to outside testing is required—no guesswork, no wasted tests.
• Certified & Accurate: Our team uses calibrated equipment and follows strict testing protocols, including blower door integration, to ensure reliable, code-acceptable results every time.
• Fast Workers: Need your results quickly for permitting? We understand tight construction timelines and offer prompt scheduling and fast reporting to keep your project moving.
• Trusted by Builders & Contractors: With 30+ years in the industry, we’re the go-to partner for HVAC contractors, builders, and energy professionals who need accurate documentation for inspections and compliance.

Schedule Testing Today

Combine your blower door test with duct leakage to outside testing from Calcs-Plus, and the future of your building’s HVAC system will be in good hands. Contact us today to schedule your testing.