Commercial HVAC and Gas Engineer

Alloy Enterprises; Milton Keynes; On-site; GBP 38,000 - 48,000; Full time

Benefits offered by this job

Competitive salary

Tools for success: service van, mobile

25 days holiday + bank holidays

Pension

Life assurance

EAP

Retail discounts

Cycle2Work

Discounts on Johnson Controls products

Job summary

Password Services Air Conditioning Ltd. part of Johnson Controls is seeking a Commercial HVAC & Gas Engineer. This mobile role covers the central region across client sites, ensuring HVAC and gas systems operate at peak performance.

You’ll be the primary technical contact for service issues—troubleshooting, repairing, and maintaining complex systems to deliver exceptional service. A full UK driving licence and willingness to travel are required.

Qualifications

• Proven HVAC service experience on air handling units and gas heaters.
• Strong knowledge of HVAC systems including cold rooms, chillers, display cabinets and ice machines.
• Excellent fault diagnosis and troubleshooting abilities.
• Able to work independently and as part of a team; full UK driving licence and willing to travel.

Responsibilities

• Carry out service, maintenance, and repairs on HVAC and refrigeration systems at client sites.
• Install, service and maintain gas and electric water heaters.
• Replace and commission heating systems and components.
• Diagnose faults and perform timely repairs to minimize downtime.
• Conduct Gas Safety checks on appliances and pipework installations.
• Maintain water systems and ensure safety and compliance with regulations.
• Complete accurate job sheets and compliance reports; participate in on-call rota.

Skills

HVAC service experience

Troubleshooting skills

Independent and team work

Full UK driving licence

Education

NVQ Level 2 in Air Conditioning & Refrigeration

F-Gas certification

Commercial Gas qualifications (CODNCO1, CIGA1, ICPN1)

Gas Safe Registered

Job description

Join Password Services Air Conditioning Ltd., part of Johnson Controls, as a Commercial HVAC & Gas Engineer. In this mobile role, you’ll work at blue-chip client sites across the central region (Birmingham to Watford), ensuring HVAC and gas systems operate at peak performance.

You’ll be the primary technical contact for service issues—troubleshooting, repairing, and maintaining complex systems to deliver exceptional service.

What You’ll Do

• Carry out service, maintenance, and repairs on HVAC & refrigeration systems at client sites.

• Install, service, and maintain gas and electric water heaters.

• Replace and commission new heating systems and components.

• Diagnose and resolve faults quickly and efficiently.

• Perform Gas Safety checks on appliances and pipework installations.

• Maintain internal and external water systems for optimal performance.

• Ensure compliance with Health & Safety regulations and industry standards.

• Complete accurate job sheets, service reports, and compliance documentation.

• Liaise with clients and participate in an on-call rota for emergency call-outs.

What We’re Looking For

• Proven HVAC service experience (e.g., AHUs, gas heaters).

• Strong knowledge of HVAC systems (cold rooms, display cabinets, chillers, cellar cooling, ice machines).

• Excellent troubleshooting skills.

• Ability to work independently and as part of a team.

• Qualifications:

  • NVQ Level 2 or equivalent in Air Conditioning & Refrigeration

  • F-Gas certification.

  • Commercial Gas qualifications (CODNCO1, CIGA1, ICPN1).

  • Gas Safe Registered.

• Full UK driving licence and willingness to travel.

What We Offer

• Competitive salary + premium overtime rates, standby allowance, and paid call-outs.

• Tools for success: Service van, mobile, tablet, PPE, and specialist tools.

• Generous leave: 25 days holiday + bank holidays.

• Benefits: Pension, life assurance, EAP, referral scheme, retail discounts, Cycle2Work, and discounts on Johnson Controls products.

• Safety-first culture: Zero Harm policy.

• Inclusive environment: Access to Johnson Controls business resource groups with training and development opportunities