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Imperial Manufacturing History

Imperial Manufacturing Group’s remarkable story began with an entrepreneur named
Normand Caissie and four workers in 1979 toiling in a 6,400-square-foot sheet metal
shop in the small Atlantic Canadian community of Richibucto, New Brunswick.

Today, the firm has become a world-class manufacturer of more than 7,000 heating, air conditioning, ventilation, and building products for residential and light commercial applications. It has over 1,000 employees working in 800,000 square feet of manufacturing and warehousing space spread in facilities across North America. It is an acknowledged innovator in the design and production of indoor air quality equipment for the North American heating, ventilation and air conditioning industry.

IMG is also named as one of Canada’s Best Managed Companies, a prestigious award sponsored by Deloitte, CIBC, National Post and Queen’s School of Business.

Throughout the years, IMG has acquired and absorbed 19 companies and now operates 10 diversified divisions. The company’s facilities are located in New Brunswick, Nova Scotia, Ontario, Quebec, and the United States.


Imperial’s Greentek brand of HRV’s and ERV’s represents a significant portion of their overall Indoor Air Quality business.  With both residential and light commercial HRV’s and ERV’s available, Greentek offers superior quality and full featured units from 30 – 1200 cfm.  Greentek units include these unique features:

  • DuoTrol balancing system: Silent and economical... By reducing motor speed to balance the unit, you avoid the noise that would be produced by balancing dampers. In addition, with this technology the unit will consume less energy
  • SPM attachment system: The entire line of Greentek HRV/ERV products is designed for installation by a single person. “Single Person Mounting” will enable you to save time and effort by offering you a variable attachment system.
  • ISF collar system: Quick and simple to install thanks to our revolutionary “Insert Slide and Fix” collar system. The “ISF” 6" (diam.) collar system enables you to manipulate duct within your reach and then insert by sliding it in place, for a better and quicker installation.

The EP Sales Commitment

EP Sales, Inc. is the Upper Midwest representative for Greentek HRV and ERV products. We currently stock all current Greentek residential and commercial models, accessories and replacement parts in our warehouse in Bloomington, MN. With over 75 years of combined experience in ventilation equipment, requirements, sizing and design, EP Sales provides distributors and contractors knowledgeable and reliable assistance and tech support for all types of residential and light commercial ventilation projects.  We also offer a number of complementary HVAC products that provide our customers with a complete package for their residential and light commercial jobs. 

EP Sales maintains a large inventory of Thermolec and Greentek products and parts to service the needs of our customers.