Testo

Testo

Testo

5.7 - Good

German-engineered smart probes for HVAC professionals

Testo 115i Wireless Temperature Clamp Probe

Testo

7.0 - Excellent

Bluetooth pipe clamp temperature probe for refrigerant line measurements with Testo Smart App and MeasureQuick integration.

Testo 174H Mini Temperature & Humidity Data Logger

Testo

6.4 - Good

Compact 2-channel mini data logger storing 16,000 readings with USB-C download and professional analysis software for building climate monitoring.

Testo 300 Pro Combustion Analyzer

Testo

7.4 - Excellent

5" HD SmartTouch display, LongLife O2 and CO sensors, instant standby-mode startup, WiFi for on-site email reporting, and up to 5-year sensor warranty.

Testo 315-4 CO Warning Instrument

Testo

6.3 - Good

TUV-certified personal CO warning instrument with 50-hour battery life and printout capability for combustion appliance safety assessments.

Testo 316-4 Refrigerant Leak Detector

Testo

6.5 - Good

Fast-response refrigerant leak detector with self-monitoring sensor, flexible gooseneck probe, and visual/audible leak alerts.

Testo 317-3 Ambient CO Meter

Testo

6.1 - Good

Highly sensitive ambient CO detector with adjustable alarms and up to 1,999 ppm measurement range for HVAC gas leak detection and safety.

Testo 420 Air Flow Capture Hood

Testo

6.9 - Good

Lightweight balometer with patented flow straighteners for accurate readings at turbulent outlets, Bluetooth app streaming, and removable micromanometer.

Testo 440 Air Velocity & IAQ Measuring Instrument

Testo

7.1 - Excellent

Connects up to 3 probes simultaneously for airflow velocity, IAQ, CO2, and temperature in one platform with structured HVAC commissioning menus built-in.

Testo 549i Wireless Pressure Smart Probe

Testo

7.1 - Excellent

Compact wireless refrigeration pressure probe with 350-foot Bluetooth range, -15 to 870 PSI range, and hose-free Schrader connection.

Testo 550s Smart Digital Manifold

Testo

6.9 - Good

Entry-level Testo Smart Manifold with Bluetooth and 2-way valve block; more affordable path into the Testo Smart Probe ecosystem.

Testo 552i Wireless Vacuum Probe

Testo

7.0 - Excellent

App-controlled wireless vacuum probe with Bluetooth, 1-micron resolution, IP54 rating, and 39-hour battery life for evacuation monitoring.

Testo 557s Smart Digital Manifold

Testo

7.4 - Excellent

4-way valve block with wireless Bluetooth vacuum probe and clamp thermometers included; IP54; guided measurement programs for superheat and subcooling.

Testo Smart Probes (115i / 510i / 605i)

Testo

7.3 - Excellent

Modular Bluetooth probe family — connect up to 4 simultaneously to the 557s manifold or testo 300 analyzer for comprehensive wireless multi-point diagnostics.