Colin Genge and Brendan Reid founded Retrotec in 1980. The company began as a blower door manufacturer in Ottawa, Canada. But, by 1984, they grew to include offices in the US. Retrotec soon expanded their services to include instruction for home performance and whole house diagnostics professionals. Since that time Retrotec has evolved into the world’s leading manufacturer of building diagnostic tools, software and manufacturer’s certification.    Retrotec blower doors and duct testers were specifically geared towards for-profit contractors. The target was professionals that build and retrofit high performance houses that don’t qualify for government subsidies. The not-for-profit sector developed overtime into a driving force for technological innovation and grew the expertise of its workforce. Now, Retrotec designs and delivers equipment and applications for testers and researchers in both sectors.     Retrotec worked closely with HVAC, window, and insulation contractors for decades to pioneer a wide range of profitable applications. This collaboration advanced the “sales-diagnostic” procedure with great success. That success eventually led to the creation of the Comfort Institute (CI), which became a separate company in 1999.     Retrotec has become known for its total dedication to innovation and improvement. Its equipment and applications have been re-engineered gradually to maintain professional appearance and performance standards. But, with the aid of an all injection molded product and manufacturing efficiencies, they still compete with less advanced products on the market.     Retrotec now has over two dozen employees in the US and exports to over 50 countries making it the largest blower door/duct tester manufacturer in the world by a factor of two.