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Our Story
Our main lines of business include: Access Control Systems, Mechanical Contractors.
GreenTech Energy Solutions has been listed in the Blue Book since 2023.
What We Do
Regions & Counties Serviced
- Washington D.C.
Maryland 1
- Baltimore
Our CSI Codes
01 21 43 - Time Allowances
08 01 74 - Operation and Maintenance of Access Control Hardware
08 74 19 - Biometric Identity Access Control Hardware
11 14 13.13 - Portable Posts and Railings
11 14 13.16 - Rotary Gates
11 14 13.19 - Turnstiles
23 01 20 - Operation and Maintenance of HVAC Piping and Pumps
23 01 80 - Operation and Maintenance of Decentralized HVAC Equipment
23 06 20 - Schedules for HVAC Piping and Pumps
23 06 50.13 - Heating Boiler Schedule
23 06 80.16 - Convection Heating and Cooling Unit Schedule
23 20 00.00.01 - HVAC Piping and Pumps
25 58 00.00.01 - Integrated Automation Control of Electronic Safety and Security Systems
25 98 00.00.01 - Integrated Automation Control Sequences for Electronic Safety and Security Systems
27 11 13 - Communications Entrance Protection
28 01 10 - Operation and Maintenance of Electronic Access Control and Intrusion Detection
28 01 10.51 - Maintenance and Administration of Electronic Access Control and Intrusion Detection
28 01 10.71 - Revisions and Upgrades of Electronic Access Control and Intrusion Detection
28 05 26 - Grounding and Bonding for Electronic Safety and Security
28 05 28 - Pathways for Electronic Safety and Security
28 06 10 - Schedules for Electronic Access Control and Intrusion Detection
28 10 00.00.01 - Electronic Access Control and Intrusion Detection
28 13 13 - Access Control Global Applications
28 13 16 - Access Control Systems and Database Management
28 13 19 - Access Control Systems Infrastructure
28 13 26 - Access Control Remote Devices
28 13 33 - Access Control Interfaces
28 13 33.16 - Access Control Interfaces to Access Control Hardware
28 13 33.26 - Access Control Interfaces to Intrusion Detection
28 13 33.36 - Access Control Interfaces to Fire Alarm
28 13 43 - Access Control Identification Management Systems
28 13 53 - Security Access Detection
28 13 53.29 - Security Access Sniffing Equipment
28 16 13 - Intrusion Detection Control, GUI, and Logic Systems
28 16 16 - Intrusion Detection Systems Infrastructure
28 16 19 - Intrusion Detection Remote Devices and Sensors
28 16 33.13 - Intrusion Detection Interfaces to Remote Monitoring
28 16 33.16 - Intrusion Detection Interfaces to Access Control Hardware
28 16 33.23 - Intrusion Detection Interfaces to Access Control System
28 26 13 - Electronic Personal Safety Detection Systems
28 31 33.16 - Fire Detection and Alarm Interfaces to Access Control Hardware
28 31 33.23 - Fire Detection and Alarm Interfaces to Access Control System
34 54 33 - Passenger Fare Gates
