Greentrol Automation

What Greentrol Automation does

GreenTrol Automation (legal name: Greentrol, Automation) is a privately held US corporation headquartered in Loris, South Carolina, that designs and sells precision airflow, temperature, and CO2 measurement devices for the light commercial HVAC market. The company's product portfolio is organized into several application-specific families: GS Series wall and duct CO2/RH/temperature sensors, OAC Series outdoor airflow controllers, GF Series airflow and temperature transmitters, IAT Series probes for rooftop, square-duct, and round-duct installations, the GC-N100 thermal-imaging occupancy counter, GA Series alarms and analog-to-network bridges, and a newer IAQ-PoE family with Power-over-Ethernet connectivity. Core technology rests on Non-Dispersive Infra-Red (NDIR) CO2 sensing paired with ABC Logic automatic baseline correction, marketed as delivering 15-year typical sensor stability without manual calibration, and on field-selectable BACnet MS/TP and Modbus RTU integration for interoperability with incumbent building automation systems.

Name

Greentrol Automation

Legal name

Greentrol, Automation

Website

https://greentrol.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

1–10 employees

Short description

GreenTrol Automation is a privately held, South Carolina-based manufacturer of precision airflow, temperature, and CO2 sensors and controllers for light commercial HVAC systems, sold via direct sales and OEM integration.

Ownership category

akta.pro rank

Product category

Commercial HVAC Measurement & Control Equipment

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls) (BPABAGAB)

akta.pro secondary industries

Heat Pump & Smart HVAC Controller Integration (HSAOANAD), Smart Climate & Air Quality (Thermostats, HVAC, Purifiers, IAQ Sensors) (HSAPAQAD)

Keywords

• Commercial HVAC sensors
• Airflow measurement devices
• Indoor air quality monitoring
• Demand-controlled ventilation
• BACnet building automation

Headquarters

HQ city

Loris

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Technology or R&D, Personnel, Marketing or Sales

Revenue model

1. HVAC Sensor Hardware Sales: Sale of precision airflow measurement devices, CO2 sensors, temperature probes, controllers, and alarms for commercial HVAC systems
2. Replacement Products: Replacement probes, controllers, alarms, and network bridges for existing system maintenance and expansion

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

GreenTrol Automation designs and manufactures precision, application-specific airflow measurement devices, CO2 sensors, temperature probes, and outdoor airflow controllers for light commercial HVAC systems. Products include wall and duct CO2 sensors, network and analog airflow/temperature transmitters, insertion probes for rooftop units and round/square ducts, occupancy counters, alarms, and analog-to-BACnet/Modbus bridges that integrate with building automation systems via BACnet MS/TP and Modbus RTU protocols.

Product overview

GreenTrol provides a comprehensive range of precision, application-specific airflow measurement devices, sensors, and controllers for commercial HVAC systems. The product portfolio includes the GS Series wall mount CO2/RH/temperature sensors (GS-N100-W, GS-N300-W, GS-N100-D), OAC Series outdoor airflow controllers (OAC-3000, OAC-3000S, OAC-4000, OAC-5000), GF Series transmitters and probes (GF-A2000, GF-N3000, GF-A1000-DI, GF-A1001-DI, GF-N1000-DI), IAT Series airflow/temperature probes (IAT-US, IAT-UI, IAT-DI), GC-N100 occupancy counter, GA Series alarms and network bridges (GA-100, GA-200), IAQ PoE series indoor air quality sensors with Power over Ethernet (IAQ-POE150-W, IAQ-POE350-W, IAQ-POE100-D, EM-POE100-W), and TD-POE2000 Ethernet transmitter with IAT2 probe variants. These products integrate via BACnet MS/TP and Modbus RTU protocols for building automation system connectivity.

Differentiator

Problem solved

Functional benefit

Brands

• GS Series: Wall mount CO2, RH and temperature sensors for indoor air quality monitoring
• GA Series
• OAC Series
• GF Series
• IAT Series

Products and services

• GS-N300-W High-performance wall-mounted CO2 sensor using NDIR technology with ABC Logic self-calibration, integrated relative humidity and temperature measurement, and BACnet MS/TP and Modbus RTU protocol support for building automation system integration.
• GS-N100-W Wall-mounted CO2 sensor with ABC Logic for long-term accuracy; designed as the preferred network wall-mounted CO2 sensor for GreenTrol outdoor air controllers and supports CO2-based and population-based demand-controlled ventilation (DCV) strategies.
• GS-N100-D Duct-mounted CO2 sensor for 4-16 inch ducts with 400 to 2,000 ppm range; connects to GreenTrol Controllers via BACnet or Modbus.
• OAC-3000 Outdoor Airflow Controller with BACnet MS/TP support and MP-Bus Control Signal/Scheduler functionality for outdoor airflow measurement and control.
• OAC-3000S Outdoor Airflow Controller with built-in real-time clock, BACnet MS/TP support, and MP-Bus Control Signal functionality.
• OAC-4000 Outdoor Airflow Controller supporting Analog Control Signal for thermostat-based systems.
• OAC-5000 Outdoor Airflow Controller for Thermostat-Based Systems providing outdoor airflow measurement and control.
• GF-A2000 Airflow and Temperature Transmitter with LCD display and pushbuttons; compatible with IAT-US, IAT-UI, and IAT-DI probes; features single analog output.
• GF-N3000 Network Airflow and Temperature Transmitter with RS-485 field-selectable BACnet MS/TP or Modbus RTU connectivity.
• GF-A1000-DI Airflow and Temperature Transmitter for round ducts (4-16 inch) with single analog output.
• GF-A1001-DI Airflow and Temperature Transmitter for round ducts (4-16 inch) with dual analog outputs.
• GF-N1000-DI Network Airflow and Temperature Transmitter for round ducts with BACnet MS/TP or Modbus RTU connectivity.
• IAT-US Airflow and Temperature Probe with Universal Standoff for rooftop OA hoods and intakes up to 8 sq ft opening; available in 6, 8, and 16 inch sizes.
• IAT-UI Airflow and Temperature Probe with Universal Insertion for square ducts up to 8 sq ft opening.
• IAT-DI Airflow and Temperature Probe with Duct Insertion for round ducts (4-16 inches).
• GC-N100 Occupancy counter using thermal imaging technology for interior door counting applications; supports non-isolated MS/TP BACnet master or Modbus RTU connection.
• GA-100 Comparison threshold alarm device that converts analog signals (0-10 VDC or 4-20 mA) into visible and contact closure alarms; no setup required.
• GA-200 Display, alarm, and analog-to-RS-485 BACnet/Modbus bridge that converts analog sensors to network sensors with 16-character LCD display and customizable units.
• IAQ-POE150-W Wall-mounted CO2 and Relative Humidity sensor with Power over Ethernet connectivity.
• IAQ-POE350-W Wall-mounted CO2, Relative Humidity, Temperature, and TVOCs sensor with Power over Ethernet connectivity.
• IAQ-POE100-D In-duct CO2 sensor for ventilation effectiveness measurement with Power over Ethernet connectivity.
• EM-POE100-W In-wall moisture sensor for building envelopes, basements, and roof enclosures with Power over Ethernet connectivity.
• TD-POE2000 Power over Ethernet transmitter supporting Vu-IQ Web and OA Hoods applications; designed to pair with IAT2 Series probes.
• IAT2-US Airflow and Temperature Probe for rooftop OA hoods with enhanced specifications; compatible with TD-POE2000 transmitter.
• IAT2-UI Airflow and Temperature Probe for square ducts with enhanced specifications; compatible with TD-POE2000 transmitter.
• IAT2-DI Airflow and Temperature Probe for round ducts with enhanced specifications; compatible with TD-POE2000 transmitter.

Quantifiable outcome

• 15 year typical sensor stability with ABC Logic enabled
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• OEM Partners (unspecified)coreOEM/ Whitelabel/ Licensing PartnerGreenTrol technology has been trusted by OEM partners for integration into their HVAC equipment. The company provides application-specific airflow measurement solutions designed for commercial HVAC system requirements.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Johnson Controls: Johnson Controls sells the Metasys BAS, VAV/ERV controllers, and a full commercial HVAC sensor portfolio — incumbent competition in the same contractors' and facility managers' RFP pools as GreenTrol.
• Trane Technologies: Trane's commercial HVAC and controls portfolio (Trane Symbio, Tracer) packages controllers and sensors with OEM RTU/ERV/HRV equipment — a strategic competitor as both a controls vendor and an OEM that could in-source measurement technology.
• Honeywell Building Technologies: Honeywell's BMS/Building Technologies division offers commercial HVAC controllers, IAQ sensors, and energy-management platforms at vastly greater scale — a broad incumbent against which GreenTrol's specialty controllers compete for spec.
• Siemens Smart Infrastructure: Siemens Desigo CC and APOGEE platforms include commercial HVAC sensors, controllers, and VAV/ERV integration — broad-incumbent competition in commercial building automation.

Direct peers

• BAPI (Building Automation Products Inc.): BAPI produces a broad line of BACnet and analog building-automation sensors (temperature, humidity, CO2, pressure, air quality) for commercial HVAC — overlapping with GreenTrol on CO2/RH/temperature wall and duct sensors.
• Setra Systems: Setra designs and manufactures precision environmental sensors (pressure, CO2, humidity, temperature) for HVAC, building automation, and cleanroom applications — a close sensor-technology peer to GreenTrol's airflow/IAQ line.
• Veris Industries: Veris manufactures HVAC sensors and monitors (current, voltage, airflow, gas, environmental) for energy and building-automation markets — a direct sensor-vendor peer to GreenTrol.
• KMC Controls: KMC Controls builds BACnet controllers, VAV/ERV controllers, and sensors for light-commercial and mid-market building automation — directly addressing GreenTrol's overlap zone of BACnet MS/TP controllers and IAQ sensors for packaged/RTU applications.
• Belimo: Belimo manufactures HVAC damper actuators and sensor products (airflow, CO2, temperature, humidity) used in commercial building automation — directly comparable to GreenTrol's measurement-and-control portfolio for commercial HVAC.
• ACI (Automation Components Inc.): ACI manufactures sensors and transmitters (temperature, humidity, pressure, CO2, airflow) for HVAC and BAS — a direct competitor in commercial airflow and IAQ measurement devices.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/greentrol-automation

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Greentrol Automation