Testing Large Buildings
For testing large buildings, Retrotec offers systems with a model 3000 high-power fan, including the QMG 3-fan system. By adding multiple high-power fans, building of any size can be tested either floor by floor, or as a complete envelope.

Controlling Air Leakage in Tall Buildings
Retrotec's President and CEO, Colin Genge,
has developed a new testing protocol for the U.S. Army Corps ofEngineers to meet their mandated 0.25cfm75/ft2 air tightness standard.
Read about this test method as it appeared in the April 2009 edition of ASHRAE Journal:

Air Leakage Testing of Multiunit Residential Buildings in Vancouver
Our president, Colin Genge, worked with Graham Finch of the University of Waterloo's Engineering Department to develop a procedure for testing multiunit residential buildings.
You can download Chapter Seven of their report to learn more about their research and the procedure.
Download Air Leakage Testing of Multiunit Residential Buildings in Vancouver
