HVAC Electrical Programmer Engineer

Custom Air Products & Services; Houston (TX); On-site; USD 90,000 - 140,000; Full time

Job summary

Custom Air Products & Services, Inc. (CAPS) is a Houston-based HVAC integrator seeking a Programmer Engineer to design, develop, and implement PLC-based control systems for custom HVAC equipment and field projects.

The role partners with engineering, fabrication, and field teams to ensure proper design, programming, testing, and commissioning. The candidate will create electrical designs, control sequences, and software, performing FAT/SAT support and on-site start-up.

Qualifications

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, or related field (or equivalent experience)
• 8–10 years of experience in HVAC, manufacturing, or industrial controls environment
• Strong PLC programming experience with Siemens and/or Allen-Bradley
• Experience with HVAC controls, sequences of operation, and system integration
• Proficiency in AutoCAD Electrical
• Knowledge of electrical power and control circuits (AC/DC)
• Familiarity with ASHRAE guidelines and NEC requirements
• Experience with hazardous location requirements; IEC/ATEX knowledge preferred
• Ability to read and interpret customer drawings, specifications, and system schematics
• Strong troubleshooting and problem-solving skills
• Ability to manage multiple projects and meet deadlines
• Effective communication and collaboration skills

Responsibilities

• Develop, program, and test PLC-based control systems for custom HVAC equipment design
• Create PLC programs from initial concept through final commissioning
• Support FAT and SAT, including system start-up and troubleshooting
• Debug, troubleshoot, and modify PLC programs for existing systems
• Design and document HVAC sequences of operation
• Develop electrical wiring diagrams, control schematics, and panel layouts using AutoCAD Electrical
• Perform electrical calculations, including MCA and MOCP, SCCR and wire sizes
• Select control components and define electrical interconnections
• Prepare and maintain BOMs for controls and electrical systems
• Review and incorporate redlines and as-built documentation
• Collaborate with engineering, fabrication, and field personnel to resolve technical issues
• Communicate control system functionality and design intent to internal stakeholders and installation teams
• Maintain organized electronic files for programs, drawings, and project documentation

Skills

PLC programming

Siemens/AB PLCs

AutoCAD Electrical

HVAC controls

Problem solving

Communication

Travel for site work

Education

Bachelor’s degree in Electrical/Mechanical Engineering

Tools

AutoCAD Electrical

PLC programming tools

Job description

Job Description

Custom Air Products & Services, Inc. (CAPS)is a Houston-based, full-service HVAC company specializing in the design, fabrication, installation, and servicing of industrial and commercial air conditioning and heating systems. Since 1996, CAPS has built a reputation for delivering high-quality, custom-engineered solutions to customers across a wide range of industries.

With a team of skilled professionals and multiple Texas-based facilities, CAPS provides end-to-end capabilities including HVAC manufacturing, mechanical field services, and parts distribution. As part of AirX Climate Solutions, we are committed to safety, quality, and customer satisfaction—creating a team-oriented environment where employees can grow, contribute, and support essential operations across the industries we serve.

We are currently seeking a Programmer Engineerto add to our growing team.

Location: 35 Southbelt Industrial Drive, Houston, TX 77047

Position Summary & Objective

The Programmer Engineer is responsible for the design, development, and implementation of PLC-based control systems for custom HVAC equipment and field-installed projects. This role supports the creation of electrical designs, control sequences, and programming required to meet project specifications and operational requirements. The position works cross-functionally with engineering, fabrication, and field teams to ensure systems are properly designed, programmed, tested, and commissioned.

Key Responsibilities

• Develop, program, and test PLC-based control systems for custom HVAC equipment design
• Create PLC programs from initial concept through final commissioning
• Support Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT), including system start-up and troubleshooting
• Debug, troubleshoot, and modify PLC programs for existing systems
• Design and document HVAC sequences of operation
• Develop electrical wiring diagrams, control schematics, and panel layouts using AutoCAD Electrical
• Perform electrical calculations, including MCA and MOCP, SCCR and wire sizes
• Select control components and define electrical interconnections
• Prepare and maintain Bills of Materials (BOMs) for controls and electrical systems
• Review and incorporate redlines and as-built documentation
• Collaborate with engineering, fabrication, and field personnel to resolve technical issues
• Communicate control system functionality and design intent to internal stakeholders and installation teams
• Maintain organized electronic files for programs, drawings, and project documentation

Qualifications & Skills

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, or related field (or equivalent experience)
• Minimum 8–10 years of experience in HVAC, manufacturing, or industrial controls environment
• Strong PLC programming experience required (Siemens and/or Allen-Bradley preferred)
• Experience with HVAC controls, sequences of operation, and system integration
• Proficiency in AutoCAD Electrical
• Strong understanding of electrical power and control circuits (AC/DC)
• Knowledge of HVAC systems and components (fans, compressors, coils, heaters, controls)
• Familiarity with ASHRAE guidelines and NEC requirements
• Familiarity with ASHRAE guidelines and NEC requirements
• Experience with hazardous location requirements; IEC/ATEX knowledge preferred
• Ability to read and interpret customer drawings, specifications, and system schematics
• Strong troubleshooting and problem-solving skills
• Ability to manage multiple projects and meet deadlines
• Effective communication and collaboration skills

Physical Requirements & Work Environment

• Office-based with frequent interaction in a manufacturing and production environment
• Regular computer-based programming and design work
• Ability to access production areas and support equipment testing
• Travel required for on-site commissioning, troubleshooting, and start-up activities
• May require extended hours during project commissioning phases

To learn more about us, please visit us on ourwebsite.

At Custom Air Products & Services, we are an equal opportunity employer and are committed to creating an inclusive environment for all employees. All employment decisions are made without regard to protected status and are based on qualifications, merit, and business needs.

Employment is contingent upon the successful completion of a pre-employment background check and drug screening, conducted in accordance with applicable laws.