Casto Technical Services, Inc. Tech Stack

HVAC and building automation systems integrator for mid-market facilities

Construction Charleston, WV 51–200 employees Founded 1965 Privately Held

Casto Technical Services operates a regional HVAC and building automation practice built on Siemens, Honeywell, and Schneider Electric control systems. The tech stack is purpose-built for mechanical systems integration—BACnet, Modbus, LonWorks, and Niagara platform dominance signal deep expertise in legacy and modern building control protocols rather than software-first operations. Active projects cluster around system retrofits, commissioning, and new construction, with stated pain points in energy efficiency and automation performance tuning.

Tech Stack 13 technologies

Core StackSiemens Honeywell Schneider Electric BACnet Modbus LonWorks Niagara AX/N4 Tridium Microsoft Office Excel Word Outlook Niagara

What Casto Technical Services, Inc. Is Building

◆Challenges

Energy efficiency
Building automation performance

▲Active Projects

System upgrades and retrofits
Control pm inspections
Retrofit projects
New construction projects
Commissioning of new bas installations

Hiring Activity

Minimal15 roles · 1 in 30d

Department

Engineering

Construction

Ops

Logistics

Sales

Seniority

Mid

Lead

Junior

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About Casto Technical Services, Inc.

Casto Technical Services is a privately held HVAC contractor and building systems integrator based in Charleston, West Virginia, operating since 1965. The company serves education, industrial, healthcare, government, financial, and professional services sectors across the region. Core services include HVAC sales, installation, service, building automation system (BAS) design and commissioning, retrofit engineering, 24/7 emergency repair, and indoor air quality testing. The 51–200 person organization is structured around engineering, construction, and operations teams, with a track record of repeat business and managed growth.

HeadquartersCharleston, WV

Company Size51–200 employees

Founded1965

Hiring MarketsUnited States

Frequently Asked Questions

What building automation platforms does Casto Technical Services use?

Siemens, Honeywell, Schneider Electric, and Tridium Niagara (AX/N4). BACnet, Modbus, and LonWorks protocols are core to their control system integration work.

What does Casto Technical Services specialize in?

HVAC installation and service, building automation system design and commissioning, retrofit engineering, energy management optimization, and emergency mechanical repair across industrial, healthcare, and government facilities.