
Exentec Hargreaves is the best kept secret in the UK defense sector’s supply chain. We have been the specialist HVAC contractor of choice for more than a decade. With a specially qualified team who hold all relevant security clearances, we work both confidentially and effectively to serve the defense sector from design to commissioning.
We have proven delivery experience in safety and critical environments. Trust Exentec Hargreaves to elevate your HVAC game from concept to commissioning. We’re a highly experienced QC1 Construction Engineering contractor specialising in HVAC for highly regulated facilities in the defense sector. We deliver the best possible outcomes in cost, quality, programmes and safety for all stakeholders.

Design and Engineering in Defense
Exentec Hargreaves works across the HVAC and project lifecycle to ensure the quality of product required in a defense facility:
- Design to QC1 quality standards
- Experienced in defense sector engineering for more than a decade
- Sophisticated digital design and BIM techniques

Manufacturing for the defense sector
The Exentec Hargreaves manufacturing facility is a bespoke and controlled environment. We work efficiently and in line with all MOD standards to produce the finest HVAC systems for safety critical facilities:
- High Integrity HVAC production
- Quality monitored production with the utmost safety
- Modular construction and off site manufacture

Installation and Commissioning on defense sites
All Exentec Hargreaves site teams have the appropriate security clearance and experience to operate safely on critical defense infrastructure:
- Installation to QC1 standards
- Full traceability of HVAC products and systems
- High Integrity ductwork for defense systems