Blower Door Testing

The Building Performance Institute has certified Weller Infrared Services as an approved Infiltration & Duct Leakage Tester. Our blower door testing service locates costly air leaks and helps you achieve money saving air tightness in your buildings. We use a high-quality Retrotec Blower Doors and Retrotec Duct Tester on all our jobs.

Building Air Leakage Testing

Our blower door and duct testing equipment locates air leakage due to cracks and missing or damaged sealants in buildings could be a major problem in hot, humid climates. Cold air can interact with the hot and humid outdoor air causing condensation issues in windows, walls and attics. This in turn can cause air quality issues and structural decay. A major cause of high energy bills in the summer months is often due to air leakage in building structures. Another common issue is damaged HVAC duct systems, that have loose or broken connections that have leaked for years ,without the building owner knowledge of the problem.

Building and Duct Leakage Testing

The building or duct system is depressurize using a Retrotec blower door or duct tester along with a sophisticated computer program that calculates the total air leakage in square foot calculations. This helps the client visualize the total amount of air leakage in their building. Infrared thermal imaging is also used to demonstrate to the client where the air leakage is occurring.

Call Us to Schedule Blower Door Test and Duct Testing

Weller Infrared Services is your best choice for complete building infrared thermal imaging and blower door and Duct Testing Services throughout the Southern United States. Call us at (888) 461-1115

We have the Training

Our system of nondestructive testing requires both skill and knowledge to accurately interpret the information gathered. Many companies will purchase a thermal imaging camera but fail to invest in the necessary training. Thermal imaging is not a "point and shoot" technology. Weller Infrared Services has been trained and has received a Level 3 certification from the Infraspection Institute. Our training is in accordance with ASNT Recommended Practice No. SNT-TC-1A Personnel Qualification and Certification in Nondestructive Testing, 2016 Edition


  • Level 3 Certified Infrared Thermographer #8339 Infraspection Institute
  • Building Science Thermographer #30937 FLIR Systems
  • Florida Certified Building Contractor
  • Florida Certified Roofing Contractor
  • AAMA Certified Fenestration Master
  • Member American Architectural Manufacturers Association (AAMA)
  • Building Performance Institute  (BPI) Certified Blower Door and Duct Tester