Testo HVAC/R testing tools for connected system diagnostics.
Texas Reps represents Testo with connected HVAC/R measurement tools for refrigeration, air conditioning, heat pumps, airflow, combustion, electrical testing and system troubleshooting. Explore digital manifolds, Smart Probes, vacuum equipment, refrigerant charging tools, thermal imaging and diagnostic instruments built around accurate measurement and connected workflows.
One measurement platform across more of the HVAC/R workflow.
Testo combines portable measurement instruments, wireless probes and connected diagnostics across refrigeration, air conditioning, heat pumps, ventilation, combustion and electrical service. Compatible tools can work together through the testo Smart App to simplify live measurement, calculations, documentation and system analysis.
Pressure, temperature, humidity, vacuum, airflow, combustion and electrical measurements can be captured with instruments selected around the actual service or commissioning task.
Bluetooth-enabled Testo tools can transmit measurement data to compatible Testo instruments or the testo Smart App, reducing the need to remain directly beside each measurement point.
Depending on the connected instrument, the platform supports live visualization, system calculations, measurement trends and digital documentation without separating every task into an isolated tool workflow.
Find the Testo instrument around the measurement task.
Select a category and then choose an instrument to compare its measurement role, key characteristics and application without opening a separate product page.
Smart Digital Manifold
Advanced digital manifold built around an intuitive touchscreen, four-way valve block and connected measurement workflow for refrigeration and air-conditioning system analysis.
Smart Digital Manifold
Compact digital manifold for routine refrigeration and air-conditioning measurements with wireless integration into the broader Testo measurement platform.
App-Controlled Digital Manifold
Compact wireless manifold designed around app-controlled operation where portability and equipment access are important.
Digital Refrigerant Scale
Connected refrigerant scale designed for precise charging and integration with compatible Testo manifolds and the testo Smart App.
AC & Refrigeration Test + Load Kit
Wireless measurement kit that brings pressure, pipe temperature and humidity readings into one connected HVAC/R measurement workflow.
Wireless Pipe-Clamp Thermometer
Wireless clamp thermometer for pipe-temperature measurement on refrigeration, air-conditioning and heating systems.
Smart Vacuum Pump
Connected vacuum pump designed to support automated evacuation workflows when paired with compatible Testo vacuum measurement equipment.
Wireless Vacuum Probe
Compact wireless vacuum probe for direct service-port measurement during system evacuation and vacuum verification.
Wireless Differential Pressure Manometer
Pocket-sized wireless instrument for differential-pressure measurements and connected HVAC system analysis.
Wireless Thermohygrometer
Compact wireless thermohygrometer with a bendable probe head for measurements in rooms and duct systems.
Wireless Thermal Imager
Compact wireless thermal imager designed for smartphone-based inspection and HVAC/R troubleshooting.
Refrigerant Leak Detector
Portable refrigerant leak detector built for identifying small refrigerant leaks during HVAC/R system service and troubleshooting.
Smart-Touch Combustion Analyzer
Smart-touch combustion analyzer for connected flue-gas measurements, draft testing and digital measurement documentation.
SMART Combustion Analyzer
Compact connected combustion analyzer designed for routine heating-system testing with digital documentation through the testo Smart App.
Bluetooth Clamp Meter
Connected clamp meter designed for electrical measurements where access around tightly packed conductors and reliable current measurement are important.
TRMS Digital Multimeter
Digital multimeter with automatic measurement-parameter detection for HVAC electrical diagnostics.
Build the Testo measurement setup around the work.
Testo instruments can be combined around the actual measurement sequence rather than treated as isolated tools. Start with charging, evacuation, system diagnosis, combustion or electrical testing, then match the instruments needed for that workflow.
Charge, commission and troubleshoot refrigerant systems.
Build a connected charging setup around digital pressure measurement, pipe temperature and refrigerant weight. The workflow can support superheat and subcooling analysis while reducing the need to move repeatedly between measurement points.
Measure and monitor the evacuation process.
Use wireless vacuum measurement to follow evacuation progress at the system instead of relying only on pump-side readings. Pair the vacuum probe with compatible Testo equipment for connected monitoring and documentation.
Measure system conditions from multiple points.
Combine differential pressure, temperature, humidity and thermal inspection measurements when diagnosing airflow, comfort or equipment-performance concerns. Wireless probes help keep readings visible while moving through the system.
Diagnose heating performance and electrical conditions.
Combine combustion measurements with electrical diagnostics when evaluating heating equipment. Testo combustion analyzers support flue-gas and draft measurements, while clamp meters and multimeters cover electrical troubleshooting.
Product literature and technical documents in one place.
Use the resource groups below to access Testo data sheets, brochures, operating information and product guides for the HVAC/R instruments featured on this page. Documents open directly so the technical information stays easy to reach.
Select a product family.
01 Refrigeration + Charging Digital manifolds • pressure • pipe temperature • refrigerant charging
02 Vacuum + Smart Probes Automated evacuation • vacuum measurement • humidity • pressure
03 Inspection + Leak Detection Thermal imaging • refrigerant leak detection • system inspection
04 Combustion + Electrical Combustion analysis • clamp meter • multimeter
Frequently Asked Questions
The three manifolds support connected refrigeration and air-conditioning measurement, but each is designed around a different working style.
- testo 550s uses a two-way valve block for routine refrigeration and air-conditioning system checks.
- testo 558s uses a four-way valve block and adds touchscreen operation and expanded graphical measurement functions.
- testo 550i is a compact, app-controlled manifold designed around a highly portable wireless workflow.
A connected charging setup can combine a Testo digital manifold, pressure and pipe-temperature measurements and the testo 560i digital refrigerant scale.
Depending on the selected configuration, the measurements can support superheat and subcooling calculations while the scale provides refrigerant weight information.
The testo 565i is the vacuum pump used to evacuate a refrigeration or air-conditioning system. The testo 552i is the wireless vacuum probe used to measure the system vacuum.
In compatible configurations, the two instruments can work together as part of a connected evacuation and measurement workflow.
Many Bluetooth-enabled Testo HVAC/R instruments and Smart Probes connect with the testo Smart App, including selected manifolds, pressure probes, temperature probes, humidity instruments, vacuum tools and refrigerant charging equipment.
Available functions depend on the instrument and may include live measurements, calculations, graphical displays, trends and digital documentation.
The testo 510i is used for differential-pressure measurement tasks including static pressure, pressure differential and compatible pitot-tube airflow measurements.
Its Bluetooth connection allows measurements to be viewed remotely through compatible Testo devices or the testo Smart App.
The testo 860i provides thermal imaging that helps visualize surface-temperature differences during HVAC/R inspection and troubleshooting.
Thermal patterns can support evaluation of heating and cooling performance, temperature distribution and mechanical-system conditions that may not be obvious from a single point measurement.
The featured combustion lineup includes the testo 300 and testo 310 II for applicable heating-system measurements.
Electrical diagnostic options featured on this page include the testo 770-3 clamp meter and testo 760-3 digital multimeter.
The Testo Technical Resource Center directly above this FAQ organizes direct product literature for refrigeration and charging, vacuum and Smart Probes, inspection and leak detection, and combustion and electrical measurement.
Review the current document for the selected instrument before confirming measurement range, compatibility, accessories or other technical requirements.
Texas Reps represents Testo in Texas, Oklahoma, Arkansas and Louisiana and can assist with represented Testo HVAC/R product selection, application questions and pricing.
Use the Texas Reps contact page or email sales@texasreps.com .