Technical Surveyor

Technical Surveyor - HVAC Systems (AHU Upgrades & Optimisation)

Location:

Hybrid - Site / Mobile + Home / Office (Hampshire)

We are recruiting for a leading UK ventilation and air‑handling manufacturer based in Hampshire. They design, build and service high‑performance Air Handling Units (AHUs) and energy‑efficient HVAC solutions for commercial, industrial and public‑sector environments.

Our client is seeking a versatile Technical Engineer to support upgrades and optimisation across their HVAC systems portfolio. This includes hands‑on work upgrading Air Handling Units (AHUs) to Electronically Commutated (EC) fans, and improving Chilled Water (CHW), Low‑Pressure Hot Water (LPHW), Direct Expansion (DX) and run‑around coil systems.

You’ll take airflow and pressure measurements, troubleshoot issues on‑site, and convert solutions into clear CAD drawings and documentation for installation teams. The role combines practical engineering, system validation and energy‑efficiency improvements.

• Support AHU upgrades, including EC fan conversions
• Optimise CHW, LPHW, DX and run‑around coil systems
• Measure and analyse airflows and pressures to validate performance
• Produce accurate CAD drawings and technical documentation
• Troubleshoot HVAC issues and assist site teams
• Collaborate with internal engineers, operations and external contractors
• Contribute to energy‑efficient system improvements
• Carry out site surveys and compliance checks

• Strong HVAC technical understanding, especially around AHUs
• Experience measuring airflow/pressure data
• Ability to produce accurate CAD drawings
• Strong problem‑solving and communication skills
• Knowledge of energy‑efficient HVAC technologies
• Proactive and adaptable approach

• Competitive salary + overtime
• Training and progression opportunities
• Company commercial vehicle
• Work with a respected UK manufacturer focused on sustainability

For any support or assistance on your application, contact your local Gi Group office directly.

Job Title:

Technical Surveyor

Company:
Gi Group

Location:

Southampton, Hampshire

Closing Date:
Jan 12th 2026