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NIST HVAC-Cx

by National Institute of Standards and Technology

Last updated Mar 29, 2026 · 1 revision

Free NIST semi-automated commissioning tool for HVAC fault detection using expert rules applied to BMS data for AHUs, chillers, and terminal units.

NIST HVAC-Cx - by National Institute of Standards and Technology - Commissioning & Diagnostics Software software - logo 5.3 Good See breakdown →

Highlights

29 Features6 Integrations

Capabilities

Free Free Tier
Buy from National Institute of Standards and Technology Visit website

Media

www.nist.gov
NIST HVAC-Cx - website image

About This Product

HVAC-Cx is a semi-automated commissioning software tool from NIST designed for HVAC performance analysis in commercial buildings. Analyzes large amounts of data from building energy management systems, applies fault detection expert rules for air handling units, chiller loops, and terminal units, and presents simplified diagnostic results in graphs and tables.

Capabilities

How this product is delivered and what's included out of the box.

Mobile app
Not available
Free trial
No
Free tier
Yes
Public API
No
Deployment
On Premise

FSH Score Breakdown

Ease of Use
5.0
Features
6.3
Support
5.0
Value
6.0
Integrations
4.5
AI Capabilities
1.5

Features

29 features confirmed across 10categories· Showing confirmed capabilities only

Equipment & Asset Management7features

Fault Code Detection And NotificationExpert Rule-Based Fault DetectionAir Handling Unit Performance AssessmentBACnet IntegrationBuilt-In Diagnostics and Fault ReportingProactive System Health Monitoring1 Minute Data Interval CollectionMinute-by-minute data analysisChiller EvaluationChiller loop performance assessment

Compliance & Safety4features

Building Systems AnalysisComprehensive Data AnalysisFunctional Performance Test Module (FPTM)Functional Performance Testing (FPT) and Ongoing MonitoringAutomated Commissioning ValidationManual Commissioning Reporting

Platform & Customization4features

Third-Party IntegrationBACnet IntegrationCustom Scripting SupportData ImportCSV Data ImportDocument ManagementAutomated documentation of test results

Reporting & Analytics3features

Dual Commissioning Report GenerationGraph and Table Data VisualizationPerformance Analysis for Mechanical Equipment

Technician Management3features

Automated Quality AssuranceActive testing using customizable test scriptsAC Fault SimulatorDiagnostic assistance with list of possible causes for each fault detectedTraining CoursesBACnet Integration

AI & Automation3features

Automation Rulescustom rule introductionAutomated Fault Diagnosis with GraphsAI SupportDiagnostic Assistance

Mobile & Field Tools2features

Image And Video Upload For TroubleshootingDiagnostic AssistanceAR VisualizationIntuitive Visualization

Scheduling & Dispatch1feature

Assign Users to Scheduling Rules PoliciesCustomizable Rules Framework

Estimating & Quoting1feature

Design VisualizationIntuitive Visualization

Training & Education1feature

Building Automation & ControlsReal-time interaction with BACnet systems

Integrations 6 across 3 categories

Industry-Specific 3
BACnet Native
Modbus Native
Niagara Framework Native
Productivity 2
Google Sheets CSV
Microsoft Excel CSV
Data & Automation 1
Microsoft Power BI API

Pricing

Model
Free
Starting at
Contact for pricing
Notes
HVAC-Cx is a free software tool developed by the National Institute of Standards and Technology (NIST). No commercial licensing or subscription fees.

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