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, 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.
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.
In August of 2024, Quatrosense Environmental Lt. (QEL) joined the Bemsiq Group as a subsidiary of Greystone Energy Systems Inc. QEL has built a very strong reputation in the gas detection market, 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 strenghtens the portfolio with a comprehensive gas detection offering across commercial and industrial sectors. Key application areas include parking garages, warehouses, service bays, and more.
Why Greystone
Greystone Energy Systems Inc. is internationally recognized as one of the largest ISO registered manufacturers of HVAC sensors and transducers for Building Automation Management Systems. We have conscientiously established a worldwide reputation as an industry leader by maintaining leading-edge design technology, prompt technical support, and a commitment to on-time deliveries.
MARKET FOCUS
With over 300 combined years of experience and technical backgrounds, our sales representatives across 9 global locations have the knowledge and background to serve your regional needs.
QUALITY ASSURED
Greystone has been part of the ISO 9001 Certified Assurance program for over 20 years. We strive for zero percent failure rates, and with 100% in-house product testing, you’ll have peace of mind knowing our products meet or exceed all industry standards
INNOVATION
We continually strive to provide you with better solutions to your HVAC challenges. Using the latest design tools, internal collaboration and customer input, all Greystone products are designed & tested in-house to provide market focused products.
LEAN MANUFACTURING
We have a keen focus on establishing lean practices to serve you better. Through modernization, improved work environments and continually striving to improve our processes, we deliver on-time and competitively priced products with confidence.
CUSTOMER FOCUSED
Our customer support representatives take pride in our customers’ satisfaction. With in-house technical support, customization, a state of the art buy site, and a free online library of product resources, we strive to provide customers with exactly what they need.
WARRANTY BACKED
All our products are designed and tested to bring our customers the most advanced and accurate sensors and transducers in the market place. Customers can have peace of mind knowing all our products come backed with a 60 month (5 year) warranty.