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Job Details

Mobile Mechanical/HIU Engineer


My client is a well-established (30 years +) and growing organisation within the HVAC industry. We have a prestigious variety of contracts covering London and the Home Counties. Our head office is based near Stansted Airport, Essex, however the majority of our customer base and work is located within the M25 and Central London.


Salary:                                  Up to £41,000 (plus estimated £5k in overtime)

Hours:                                  8am – 5pm

Job Type:                             Permanent

Location of work:            99% inside of M25
Head Office:                       Essex
Call out Rota:                    Approximately 1 week in 7

Overtime rate:                  Time and a half or double time plus standby allowance of £150



  • Competitive salary
  • Holiday entitlement: 25 days plus Bank Holidays
  • Bonus incentive schemes
  • Fully equipped van less than 3 years old (Transit or similar)
  • Uniform, phone, tablet, fuel card, parking credit card
  • Child care voucher scheme
  • Auto enrolment pension
  • Training and development
  • Sickness insurance scheme
  • Tech desk support

Experience/knowledge of:
  • Hydraulic systems for heating/hot/cold and boosted, to include knowledge and understanding of measuring/achieving flow rates and all ancillary components.
  • Pumping systems and invertor driven pumps maintenance and set up.
  • Pipework systems to include balancing, commissioning, flow control and general valves
  • Pressure vessels and pressurisation units installation and maintenance
  • HIU systems and distribution to include HIU service and maintenance
  • Pressure testing
  • Primary, secondary, tertiary fault finding of issues and provision of accurate reporting and recommendations
  • Understanding heat losses methods to improve with accurate reporting and recommendations
  • Ability to undertake system drain downs and refills effectively (whole building)
  • Ability to change pumps, valves, valve components (directional and modulating), plates exchangers to include servicing and inspection.
  • Working within Energy Centres, Large centralised plant rooms, building distribution systems.

Understanding or familiar with:
  • Gas boilers and safety
  • Electrical systems and safety
  • Plant controls and safety
  • Safety and working safely

To Apply:
  • You must be living and authorised to work in the UK to apply for this position.
  • You will also need to be living within commutable distance to Central London.
  • A full UK driving licence is essential plus clear DBS check.
  • At least 3 years mobile HVAC experience.