Pros, Join Our TradeMaster Program!
The Testo AC & Refrigeration test and load kit includes two Testo 549i high-pressure measuring instruments, two Testo 605i thermohygrometers and two Testo 115i clamp thermometers for pressure, (air) temperature and humidity measurement. In conjunction with a smartphone or tablet, the kit is ideally suited to servicing and troubleshooting on air conditioning and refrigeration systems, as well as their installation. The Testo 549i and Testo 115i can be quickly and easily attached directly at the pressure connection or the temperature measuring point. They also make it considerably easier to work on measuring points that are a long distance apart, thanks to wireless connection to a smartphone or tablet.

The measuring values of both instruments are transmitted via Bluetooth to the Testo Smart Probes App installed on your terminal device enabling convenient and flexible readout there. In addition, the App enables automatic calculation of evaporation and condensation temperatures as well as of heating/cooling output. All measurement data are presented either as a diagram or a table. Finally, the measurement data report can be e-mailed directly as a pdf or Excel file.

  • Measure high-side & low-side refrigerant pressure & temperatures (simultaneously) of AC/refrigeration systems
  • Testo 549i now includes 45° angled hose connections
  • Testo 605i now includes 90° foldable probe
  • Calculate superheat and subcooling in the Smart Probe App
  • Measurement data is transmitted to the convenient and powerful testo Smart Probes App in your smart device
  • HVAC softcase holds the complete set of smart probes
  • 350 ft. Bluetooth Range

What's Included:
  • 2x 549i High-pressure Refrigeration Gauges
  • 2x 115i Pipe-clamp Thermometer
  • 2x 605i Thermohygrometer
  • HVAC softcase
  • batteries
  • calibration protocol
Hide Description
Manuals (4)
Product Type:



Refrigerant Pressure


Measurement Range:

-14 to 870 psi

-58.0 to 302.0 °F

0-100% RH

Operating Temp Range:

-4° to +122°F


2 Years


Product Reviews

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.