Test Products International

Test Products International

Test Products International (TPI) is a US-based manufacturer of portable test and measurement instruments designed for HVAC technicians, industrial maintenance professionals, and field service engineers. TPI produces handheld and portable instruments covering gas analysis, vibration monitoring, temperature measurement, and environmental monitoring, with an emphasis on rugged, practical instruments suited to field conditions.

TPI instruments address the practical requirements of building services, plant maintenance, and industrial diagnostics, providing tradespeople and engineers with measurement capabilities needed for troubleshooting, commissioning, and preventive maintenance without the complexity of laboratory-grade instrumentation.

Key Product Lines

• Gas Analyzers and Detectors: Combustion analyzers for HVAC and boiler servicing, and gas leak detectors for industrial safety applications
• Vibration Meters and Analyzers: Portable vibration measurement instruments for bearing condition monitoring, mechanical fault diagnosis, and predictive maintenance programs
• Temperature Instruments: Handheld thermometers, thermocouple indicators, and temperature data loggers for industrial, HVAC, and food service applications

Industries Served

TPI instruments are used in HVAC/R installation and servicing, building facilities management, industrial plant maintenance, and environmental health and safety testing. The brand is particularly known among HVAC contractors and plant maintenance technicians seeking reliable, practical field instruments for everyday diagnostic and commissioning tasks.