Testo
15 products on Full Stack HVAC
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About Testo
Founded in 1957, this provider specializes in precision measurement and diagnostic tools for HVAC professionals. The product catalog features combustion analyzers, digital manifolds, CO detectors, and wireless smart probes to ensure system efficiency and safety.
Products from Testo
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Measurements
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Testo
Testo
German-engineered smart probes for HVAC professionals
Testo 115i Wireless Temperature Clamp Probe
Testo
Bluetooth pipe clamp temperature probe for refrigerant line measurements with Testo Smart App and MeasureQuick integration.
Testo 174H Mini Temperature & Humidity Data Logger
Testo
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
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
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
Fast-response refrigerant leak detector with self-monitoring sensor, flexible gooseneck probe, and visual/audible leak alerts.
Testo 317-3 Ambient CO Meter
Testo
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
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
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
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
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
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
4-way valve block with wireless Bluetooth vacuum probe and clamp thermometers included; IP54; guided measurement programs for superheat and subcooling.
Testo Smart
Testo
Testo Smart Probes (115i / 510i / 605i)
Testo
Modular Bluetooth probe family — connect up to 4 simultaneously to the 557s manifold or testo 300 analyzer for comprehensive wireless multi-point diagnostics.
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