Testo 440 Air Velocity & IAQ Measuring Instrument
by Testo
Connects up to 3 probes simultaneously for airflow velocity, IAQ, CO2, and temperature in one platform with structured HVAC commissioning menus built-in.
Highlights
Capabilities
Media
www.testo.com
About This Product
The testo 440 is the reference instrument for commercial HVAC commissioning and TAB work in North America and Europe. The probe-swap system is the key differentiator — same handle works with hot-wire, vane, CO2, humidity probes. California Energy Commission Title 24 approved probes available.
Capabilities
How this product is delivered and what's included out of the box.
- Mobile app
- Available
- Free trial
- No
- Free tier
- No
- Public API
- No
- Deployment
- On Premise
Tool Specifications
- Accuracy Class
- Field Grade
- Measurement Range
- Depends on probe: 0–20 m/s velocity; CO2 0–10,000 ppm (optional); RH 0–100%
- Ruggedness
- Field
- Battery
- 3x AA
- Warranty
- 2 years
- Ecosystem
- Testo Smart Probes
- Companion App
- testo Smart App
Data Logging Mobile App
FSH Score Breakdown
Ease of Use 7.0
Features 9.0
Support 5.0
Value 4.0
Integrations 5.5
AI Capabilities 1.5
Customer Reviews
Features
84 features confirmed across
9categories· Showing confirmed capabilities only
Hardware Features28features
Automatic Probe DetectionDual Backlit DisplayIntegrated Draft and Gas ZeroingIntegrated MagnetsIntegrated Differential Pressure SensorAdjustable Alarm Setpoints and LatchingAdjustable Probe LengthAuto Shutoff
Show 20 more
Automatic ZeroingContact Temperature MeasurementCustomizable Display and AlarmsDual Probe Support for Multi-Parameter MeasurementDual Type K Temperature PortsEarphone JackEarplug Connection for Loud EnvironmentsIntegrated Flow StraightenerIntegrated Magnets for Mounting on Equipment CabinetMulti-Unit MeasurementParallel Humidity and Temperature MeasurementRetrofit No Sensor CapabilitySupports Combination of Two Probes Within a Single TransmitterTiltable DisplayUSB Data TransferMagnetic MountingMagnetic mountingField Replaceable CO SensorQuick-Change ProbesRechargeable BatteryTouchscreen Display
Compliance & Safety19features
NIST Calibration TrackingNo calibration required for the meter unitTemperature Split CalculatorDeltaCool differential temperature measurementFlow Rate Calculatorvolume flow measurementPsychrometric CalculationsTimed and multi-point mean calculationSuperheat/Subcool CalcTimed and Multi-Point Mean CalculationTurbulence And Draft Risk CalculationA2L Refrigerant Compliance
Show 11 more
Airflow MeasurementDetermination of Overheating, Pressure Drop Testing, and EvacuationFlue and Ambient Temperature MeasurementHumidity Mode with Mould Risk AssessmentIndoor Air Quality Calculation Including Dew Point And Wet Bulb TemperatureRefrigerant CalculationsAutomatic calculation of evaporation and condensation temperaturesTurbulence MeasurementTurbulence measurement (EN ISO 7730 / ASHRAE 55)Airflow CalculationsPitot tube measurementAir BalancingPRO Air balancing measurement programmeHeating/Cooling Output CalculationStatic Pressure Measurement
Equipment & Asset Management11features
Remote MonitoringRemote control of instrumentsAir Quality Monitoringturbulence measurement (iso en 7730/ashrae 55)Long-Term Environmental Measurementlong-term measurement loggingBluetooth Connectivity To Control BoardsBurst Logging CapabilityRefrigerant Database With Over 100 EntriesSensor DiagnosticsSensor Replacement Tracking
Show 3 more
Modular Sensor IntegrationConnects to three probes simultaneously (Bluetooth, wired, Type K)AlertsAdjustable alarm thresholdSelf-Diagnostic Mode
Reporting & Analytics8features
ReportingPDF and CSV report generationEconomic AnalysisHeating/cooling output calculationPdf And Excel Report GenerationAutomatic Diagram Generation from Data SourcesGraph and Table Data VisualizationMap Based Data VisualizationAudit Report GenerationAutomated Data Logging
Mobile & Field Tools8features
Bluetooth Probe IntegrationDifferential pressure sensor support (testo 440 dP) for Pitot tube and filter measurementsDigital Documentation CreationDocumentation via Testo Smart AppGuided Measurement ProgramsMulti-Tool Simultaneous ConnectionAI Photo AnalysisAutomatic probe detectionBluetooth PrintingDigital Signatures
Platform & Customization6features
Data ImportAutomatic data synchronizationData ExportInternal memory storage for 7,500 measurement reportsApplication Engineering App IntegrationLive data feed integration with MeasureQuick AppCentralized Data StorageData Exchange with Testo DataControl PC SoftwareDocument ManagementEasy documentation
Technician Management2features
Electrical Measurement TrackingParallel measurementsAI LogbookData logging up to 7,500 protocols
Customer Communication1feature
Email IntegrationWiFi hotspot reporting
CRM & Sales1feature
Customer and Site Data Management
Pricing
- Model
- Quote Only
- Starting at
- Contact for pricing
- Notes
- Retail purchase. Base unit ~$400–500 USD; airflow kit with probes $700–1,100 USD.
