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U.S.A. Made

Manufacturing Excellence Since 1931



Domestic Manufacturing
Dwyer is a proud U.S.A. manufacturer of instrumentation solutions for the HVAC and process automation markets. Since our founding in 1931, Dwyer manufacturing has expanded across several midwest states, including Indiana, Minnesota, and Missouri. For us, it’s not enough just to support U.S. based jobs. We focus on designing and assembling our products in the United States.


Product Innovation

Dwyer has a long history of innovation in designing and manufacturing our own measurement sensors that provide superior product performance. Our design facilities use advanced computer modeling software to simulate real world situations, resulting in more accurate measurement techniques in our products. We’ve also invested in state-of-the-art research and development, for best-in-class product testing and verification. Dwyer instrumentation has been recognized by industry experts for several years.

Commitment to Quality
We respect that our customers have a choice and we are honored that they choose the best products, manufactured by Dwyer, as a reflection of their own high standards in delivering the highest level of quality and reliability. Dwyer is ISO 9001:2015 certified. Additionally, our Engineering Laboratory has been accredited by the ANSI National Accreditation Board and meets the requirements of ISO/IEC 17025:2017 for calibration services (see our scope of accreditation for details). This continued excellence allows you to be confident in our products and calibration services, which are proudly “U.S.A. Made”.