The Energy Conservatory (TEC) is known worldwide as a leader in the building performance testing industry. Since 1981, our goal has been to provide building professionals with the specialized tools and support needed to create more efficient, affordable and healthy buildings. TEC continues to set the standard for specialized air flow and pressure measuring devices used to monitor and analyze the complex interactions that determine building performance. TEC manufactures the Minneapolis Blower Door™, the Minneapolis Duct Blaster®, the FlowBlaster® Capture Hood Accessory, the TrueFlow® Air Handler Flow Meter, and the DG-700 Pressure and Flow Gauge.
