HVAC Process Engineer

ALKU; Taylor (TX); On-site; USD 80,000 - 110,000; Full time

Job summary

A leading engineering firm in Texas is seeking an experienced HVAC Engineer with 5+ years in design and commissioning specific to cleanrooms and advanced manufacturing settings. The role involves developing HVAC systems that meet stringent environmental controls and involves extensive coordination with multidisciplinary teams. Ideal candidates should have a strong grasp of ASHRAE standards and advanced HVAC design practices.

Qualifications

• 5–10+ years HVAC design/commissioning experience.
• Strong understanding of ASHRAE, ISO 14644, and SEMI environmental guidance.
• Proficiency in load/psychrometric calculations and writing control sequences.

Responsibilities

• Own HVAC engineering for cleanroom and facility in major expansions.
• Develop/own load calculations and size HVAC components.
• Coordinate HVAC designs with other engineering disciplines.

Skills

HVAC design/commissioning for semiconductor or advanced manufacturing

ASHRAE standards knowledge

Revit/AutoCAD proficiency

BAS/BMS trend & alarm tuning experience

TAB/commissioning experience

Job description

Own end-to-end cleanroom and facility HVAC engineering for new fab builds and major expansions—delivering temperature, humidity, and pressure cascade control that supports ISO‑classified bays/corridors and sub‑fabs. Scope spans AHUs/MAUs/FFUs, VAV/pressurization schemes, return/exhaust strategies (acid/solvent/general), heat recovery/economizers, BAS/BMS integration, and commissioning/TAB from Basis of Design ? P&IDs/sequence ? construction ? turnover.

Day‑to‑Day

Develop/own load calcs & psychometrics; size coils/fans, outside air, and latent/sensible splits for cleanroom zones and support areas. Define pressure cascades (bay ? chase ? service), leakage allowances, and door/airlock strategies; manage differential pressure alarm setpoints and recovery sequences. Create PFDs/P&IDs, control narratives, and sequences of operation for AHUs/MAUs/FFUs/VAVs, reheat, humidification/dehumidification, and emergency modes (EPO, purge, smoke). Coordinate BIM/VDC (Revit/AutoCAD) with Arch/Civ/Str and MEP; resolve clash for duct mains, drops, and cleanroom ceiling plenums; set slab FF/FL interface requirements. Integrate HVAC with exhaust/abatement (acid/solvent/HEPA), bulk/specialty gas rooms (HPM), and tool heat loads via utility matrices; ensure AMC/VOC control and filtration strategy (HEPA/ULPA). Specify and review fans, coils, filters, humidifiers, VFDs, valves, sensors, and ECM FFUs; define N+1 and energy recovery strategies. Field execution: RFIs, submittals, TAB plans, airflow visualization/smoke studies, balancing, trend/alarm tuning in BAS/BMS, and turnover documentation (O&M, as‑builts). Support FAT/SAT, functional performance tests, and compliance sign‑off for ISO 14644 classes and owner environmental specs.

Must‑Have Skills

• 5–10+ years HVAC design/commissioning for semiconductor or advanced manufacturing.
• Strong with ASHRAE (incl. 170/90.1 concepts), ISO 14644, SMACNA, NFPA, IFC HPM awareness, and SEMI environmental guidance.
• Proficiency in load/psychrometric calculations, Revit/AutoCAD, and writing control sequences; hands‑on with BAS/BMS trend & alarm tuning.
• Practical TAB/commissioning experience: airflow balancing, DP cascades, humidity control, and start‑up troubleshooting.