Greystone Energy Systems

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Come meet our team and check out our new high-accuracy humidity/temperature transmitters for a chance to win a special prize.

New Products:

Come see our latest innovations, including gas detectors, room sensors, pressure wet gauges, high-accuracy humidity/temperature transmitters, IAQ multi-sense, water detectors, wireless sensors, and much more.

Description:

Greystone Energy Systems Inc. is internationally recognized as one of the largest ISO registered manufacturers of HVAC sensors and transmitters for Building Automation Management Systems.

Through leading-edge design technology, prompt technical support, a commitment to providing our customers the highest level of service, a responsibility to sustainability, and over 40 years of experience designing, manufacturing and supplying HVAC sensors and transmitters, we are proud to have established a worldwide reputation as an industry leader.

Proudly Canadian, Greystone is headquartered in Moncton, New Brunswick, Canada. Our global family consists of employees across 14 locations globally, including regional and satellite sales offices in Canada, United States, Dubai, India, Singapore, Malaysia and Australia.

From the beginning, Greystone has had a global growth mindset. The company expanded into the United States in 1987, followed by Southeast Asia in 1989, the Middle East in 1998 and Australia in 2025. Most recently our market expansion has focused on South and Central America, as we continue to expand within our current markets.

In 2021, Greystone became part of the Bemsiq Group; a group of innovative and fast-growing companies providing products in building automation and metering. The group is operating in Europe, North America, The Middle East, and Asia, with the ambition to build the most comprehensive portfolio of products within the smart buildings market. Bemsiq is a wholly-owned subsidiary of Investment AB Latour (publ).

In August of 2024, Quatrosense Environmental Ltd. (QEL) joined the Bemsiq Group as a subsidiary of Greystone Energy Systems Inc. QEL has built a very strong reputation in the gas detection line, offering a wide range of toxic, combustible, and refrigerant gas detection equipment for commercial and industrial applications, a very complimentary mix to the existing Greystone product line.

In December of 2024, Armstrong Monitoring Company joins the Bemsiq Group as a wholly owned subsidiary of Greystone. The addition of Armstrong strengthens the portfolio with a comprehensive gas detection offering across commercial and industrial sectors. Key application areas include parking garages, warehouses, service bays, and more.

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Certifications & Awards

Products are fully RoHS, REACH, and CE compliant, and most of the product lines are transitioning to be UL Listed. Products are manufactured in Canada under ISO 9001 Certified Quality Program and are backed by a 5-year Warranty.