Pros, Join Our TradeMaster Program!
testo 552 is a digital vacuum gauge for the evacuation of refrigeration systems and heat pumps. It measures even the smallest absolute pressures, and delivers highly accurate information about a system's status of dehumidification (removal of foreign matter, incl. oils, foreign gases, etc.).

Via a Bluetooth interface, the testo 552 connects with the testo Smart Probes App on your smartphone or tablet. This allows you to monitor the absolute pressure reached during the evacuation conveniently and wirelessly. In addition to this, the measurement results can be quickly documented in the App and sent by e-mail.
Its robust construction makes it ideal for everyday use, protected against dirt and water

  • Highly accurate and reliable measurement results
  • Measurement data monitoring via testo Smart Probes App
  • Measurement data dispatch via testo Smart Probes App
  • Measurement of the evaporation temperature of H2O
  • Optical alarm when a limit value is exceeded
  • Extremely robust and water/dirt resistant (IP 42)
Read more
Product Type:
Vacuum Gauge
Measurement Range:
1100 to 0 mBar
Battery Life:
50 hours (without Bluetooth/backlighting)
Battery Type:
2 "AA" Alkaline Batteries
Measurement Rate:
1 time per 0.5 Second
2 Years
Speak with a real person who will go out of their way to help!
Closed Now: Phone Hours
Monday – Thursday
8am–7:45pm ET
9am–7:45pm ET

2 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.