Dwyer Instruments HVAC Sensors & Probes

Dwyer Instruments: Precision HVAC Sensors & Probes Built for Demanding Environments

When HVAC technicians and building automation engineers need sensors and probes they can stake a system's performance on, Dwyer Instruments is a name that consistently rises to the top. HVAC sensors and probes are the nervous system of any modern heating, ventilation, and air conditioning installation — and Dwyer has spent over nine decades perfecting them.

Founded in 1931, Dwyer Instruments has grown into a globally recognized authority in instrumentation. Dwyer is known for sensors, gauges, transmitters, meters, and control devices designed to provide accurate measurement of pressure, flow, temperature, level, and environmental conditions — all with the ruggedness demanded by real-world HVAC applications.

What Sets Dwyer Apart in HVAC Sensing

Dwyer's deep specialization in HVAC sensing shows up in the breadth and precision of their probe lineup. Their Series I2-1 Immersion Temperature Probes, for example, are engineered specifically for hot and chilled water line monitoring in building automation systems, offering multiple sensor output types that connect to virtually any digital building controller. Paired with the Series IW2 stainless steel thermowells, these probes can even be replaced without draining the water line — a practical advantage that saves significant time and labor in occupied commercial buildings.

Beyond temperature, Dwyer's HVAC sensor portfolio spans humidity and temperature transmitters (including the Series RHP), CO₂/RH/temperature combination sensors (such as the Series CDTR), air velocity transmitters, differential pressure sensors, and static pressure pickups — covering virtually every measurement point an HVAC or building automation system requires. Their probes are available in a range of insertion lengths and output configurations to suit diverse installation scenarios.

What underpins all of these products is Dwyer's engineering depth. The company holds over 650 technical patents, a number that continues to grow, and their product designs have been recognized repeatedly by industry experts for delivering superior measurement performance. Manufacturing takes place in the United States, and Dwyer's quality standards reflect decades of refinement driven by close collaboration with HVAC contractors and systems integrators worldwide.

Why HVAC Professionals Choose Dwyer Sensors & Probes

• Broad compatibility: Sensor outputs designed to interface with virtually any digital building controller or BAS platform.
• Application-specific designs: Dedicated probe series for immersion, duct, room, and outdoor sensing scenarios common in HVAC.
• Durable construction: Stainless steel housings, thermowells, and robust probe materials engineered for long service life.
• Comprehensive coverage: Temperature, humidity, CO₂, air quality, pressure, and air velocity — all from a single trusted manufacturer.
• U.S. manufacturing: Domestic production supports consistent quality and supply reliability.

Whether you're commissioning a new commercial HVAC system, retrofitting building automation sensors, or replacing a faulty temperature probe in a pressurized water line, Dwyer Instruments delivers the measurement accuracy and installation flexibility that professionals depend on. Explore the full selection of Dwyer Instruments HVAC Sensors & Probes to find the right solution for your application.