Innovation

TEC products have a proven track record for innovation, reliability, accuracy and versatility

TEC pioneered the industry leading Minneapolis Blower Door™ and Duct Blaster® testing systems.
TEC is continually improving its highly acclaimed line of digital pressure gauges, most recently adding WiFi capability.
TEC has created a complementary line of air flow measurement tools including the TrueFlow® Air Handler Flow Meter, Exhaust Fan Flow Meter and FlowBlaster® Capture Hood Accessory.
TEC’s advanced set of testing and productivity apps and software tools give you the power meet all of your client’s testing and training needs.

Experience TEC

We provide the best and most accurate technical support

When you purchase TEC products, you are buying more than just the best designed building diagnostic tools. You are also buying our expertise, knowledge, superior service and commitment to quality. Partner with TEC and experience the difference it makes working with the recognized industry leader.

TEC has an experienced staff of professionals with a wide range of technical skills and field experience. When you have questions on the use of our products or how to handle unusual situations you may encounter, you can count on us to give dependable answers. Our expertise goes beyond simply knowing our equipment. Our on-going research and close working relationship with the world’s leading building scientists has kept us actively involved in the development and field testing of many of the techniques currently being used in the performance testing industry. This experience ensures that our customers always have the most up to date information and testing procedures, and that we provide the very best technical support.

And if you ever have an equipment problem, we always stock a complete line of replacement parts, and can respond quickly to any service problem.

Who We Are

The TEC story

The idea for TEC was created in 1980 over lunches between partners Gary Anderson, then an auditor in St. Paul, and Gary Nelson, an engineer at the Minnesota Energy Agency, during which they would discuss the latest discoveries in residential energy efficiency. The blower door was one advance that captured their imagination.

Like so many great companies before it, TEC got its start in a garage where the two partners strove continuously to create a blower door design that would be more practical for mainstream contractors. That meant it had to be less expensive, lighter, and easier to use. They worked to make blower door testing more friendly, accurate, and efficient, and helped develop protocols for weatherization programs to prioritize air sealing efforts. Their efforts paid off and helped propel advances in construction and air sealing techniques that have become mainstream elements in both new construction and retrofit applications.

TEC quickly outgrew the garage business model and moved into a larger facility where innovation continued to flourish. During this time TEC developed many industry leading products including the first high precision two-channel digital pressure gauge and the first automated blower door testing system. In the late 1980s,

In the summer of 1999 TEC moved into its current location in the Greenway Building in Minneapolis, MN, located at 2801 21st Ave South. Here the tradition of innovation continues with advances in performance testing equipment to quickly and accurately measure air handler flows, register and ventilation system flows and airtightness levels in large commercial buildings.

Overview of the diagnostic tools available from The Energy Conservatory

TEC - Model Minneapolis DG-1000 - Duct Blaster System without Gauge - Brochure