Paired with the testo Smart App, the testo 860i becomes a seamless extension of your HVAC/R toolkit. Easy to use with real-time display on your phone, effortless documentation, and on-site report sharing.

With its HVAC/R tailored measuring programs, it´s designed for intuitive, reliable, and fast inspections:

• Thermography: Quick spot checks with automatic hot- and cold-spot detection.

• DeltaHeat: Automatic calculation of the temperature difference between flow and return on radiators.

• Humidity Mode: Reliable detection of mould risk using the traffic-light principle.