Commercial HVAC Service Technician

Job Description Job Description

We are seeking an experienced Commercial HVAC Service Technician specializing in direct expansion (DX) equipment. This position is focused on troubleshooting, repairing, replacing, and commissioning rooftop units, split systems, package units, and other DX equipment. While this is not a chiller or boiler technician position, experience working around central plant equipment is a plus and occasional support of those projects may be required.

Responsibilities

• Troubleshoot, diagnose, repair, and replace commercial DX HVAC equipment.
• Install, start up, and commission rooftop units, split systems, package units, and related controls.
• Perform testing, balancing, and operational verification of new installations.
• Read plans, specifications, wiring diagrams, and sequence of operations.
• Coordinate work with project managers, customers, and other trades.
• Lead small crews and oversee field activities when required.
• Complete service documentation using mobile technology.
• Occasionally assist with commercial mechanical projects involving chillers, boilers, pumps, cooling towers, and hydronic piping systems.

Qualifications

• 4+ years of commercial HVAC experience preferred
• Strong diagnostic and troubleshooting skills on DX systems and rooftop equipment.
• Experience with commercial controls and electrical troubleshooting.
• Experience with chillers, boilers, pumps, cooling towers, or hydronic systems is beneficial but not required.
• Valid driver's license with a clean driving record.
• Leadership or foreman experience preferred.
• Strong communication and customer service skills.
• Self-motivated, dependable, and capable of working independently.
• Comfortable using smartphones and tablets for field reporting.
• Flexibility to meet customer schedules and project requirements.

Company Description

Columbia Contracting Corporation is a locally owned commercial mechanical contractor serving South Texas for over 35 years. With fewer than 50 employees, we specialize exclusively in commercial HVAC and mechanical construction, including rooftop unit replacements, DX systems, chiller plants, hydronic piping, central plant renovations, and design-build projects for schools, municipalities, industrial facilities, and commercial buildings. We are known for quality workmanship, safety, and building long-term relationships with our customers.

Company Description Columbia Contracting Corporation is a locally owned commercial mechanical contractor serving South Texas for over 35 years. With fewer than 50 employees, we specialize exclusively in commercial HVAC and mechanical construction, including rooftop unit replacements, DX systems, chiller plants, hydronic piping, central plant renovations, and design-build projects for schools, municipalities, industrial facilities, and commercial buildings. We are known for quality workmanship, safety, and building long-term relationships with our customers.