Testo 552 Bluetooth Digital Vacuum Gauge | Smart Probes App | 0560 5522

Testo 552 Bluetooth Digital Vacuum Gauge — testo Smart Probes App | SKU: 0560 5522

The Testo 552 is a high-precision digital vacuum gauge with Bluetooth connectivity, designed for HVAC/R technicians who need accurate vacuum measurement during refrigerant system and heat pump evacuation. It connects to the testo Smart Probes App on your smartphone or tablet, allowing you to monitor absolute pressure wirelessly, document results, and send measurement data by email — all from your mobile device.

In addition to vacuum measurement, the 552 automatically calculates the evaporation temperature of water (H₂O) at the measured pressure — useful for confirming that moisture has been adequately removed from the system. A visual alarm warns immediately when a threshold is exceeded.

Important: System evacuation and refrigerant handling requires appropriate trade qualifications. Confirm licensing and compliance requirements with the relevant authority in your state or territory before undertaking refrigerant work.

Confirm current testo Smart Probes App compatibility with your smartphone OS version before ordering. Confirm all specifications against the Testo 552 manufacturer’s current datasheet.

Key Features

• Measuring range: 0 to 25,000 microns
• Resolution: 1 micron
• Accuracy: 5% of reading ±5 microns
• Bluetooth connectivity — connects to testo Smart Probes App
• Wireless monitoring of absolute pressure during evacuation
• Automatic calculation of H₂O evaporation temperature at measured pressure
• Visual alarm — warns when threshold is exceeded
• Backlit display
• Connector: standard 1/4" male flare
• Battery: 2 x AA — up to 300-hour life
• Operating temperature: -12°C to 50°C
• Rugged, durable construction
• 12-month manufacturer’s warranty

What’s Included

• Testo 552 digital vacuum gauge with Bluetooth
• 2 x AA batteries

Testo 552 vs Testo 552i — Which Vacuum Probe?

• Testo 552 ($564.95): Standalone vacuum gauge with Bluetooth to testo Smart Probes App. Includes its own display. Suited to technicians who want a dedicated vacuum gauge with app connectivity.
• Testo 552i ($363.95): Wireless vacuum probe (no standalone display) that connects directly to the testo Smart Probes App and compatible Testo digital manifolds. Suited to technicians already using the Testo Smart Probes ecosystem.

Best For

• HVAC/R technicians evacuating refrigerant systems and heat pumps who want wireless vacuum monitoring
• Technicians who want automatic H₂O evaporation temperature calculation to confirm moisture removal
• Technicians using the testo Smart Probes App ecosystem for wireless measurement and reporting

Check Before Ordering

• Confirm testo Smart Probes App compatibility with your smartphone OS version before ordering
• Connector is standard 1/4" male flare — confirm compatibility with your vacuum pump and system service ports
• System evacuation requires appropriate trade qualifications — confirm licensing requirements in your state or territory
• Warranty: 12 months — confirm current terms at time of purchase

Frequently Asked Questions

What does the H₂O evaporation temperature calculation tell me?

At low absolute pressures, water evaporates at much lower temperatures than at atmospheric pressure. The 552 calculates the evaporation temperature of water at the measured vacuum level, helping you confirm that moisture has been adequately removed from the system before releasing for refrigerant charge.

What app does the Testo 552 use?

The testo Smart Probes App, available for iOS and Android. Confirm current compatibility with your device and OS version before ordering.

What is the warranty?

12-month manufacturer’s warranty. Confirm current terms with HVAC Trade Supply at time of purchase.

Browse our full vacuum gauge range or contact our team for advice.