Air Conditioning Engineer / HVAC Engineer – Mobile – Commercial PPM & Reactive – London & South East

We're expanding our specialist Service & Maintenance team and urgently seeking experienced Air Conditioning Engineers, HVAC Engineers, AC Service Engineers, Mobile AC Engineers, and Commercial Refrigeration Engineers who specialise in planned preventative maintenance (PPM), reactive breakdowns, emergency call-outs, and fault-finding on commercial systems.

If you're a hands-on engineer who enjoys variety, thrives on quick diagnostics and urgent fixes, and wants to deliver 24/7 reliability to high-profile commercial clients across London, Surrey, and the South East, this mobile role is perfect for you!

Key Responsibilities:

• Perform planned preventative maintenance (PPM), service visits, compliance checks, and system health reports on commercial air conditioning and HVAC equipment.
• Respond rapidly to reactive breakdowns, emergency call-outs (including out-of-hours rota), and urgent client requests to minimise downtime.
• Diagnose faults, repair, recharge, commission, and test systems including VRV/VRF, splits, fan coils, comfort cooling, chilled water, and associated controls.
• Accurately complete F-Gas paperwork, maintain site logbooks, and ensure full regulatory compliance.
• Carry out minor installations, modifications, upgrades, and remedial works as required.
• Collaborate with the office team to log jobs, update clients, and achieve fast resolutions.

Essential Requirements:

• Proven experience as an Air Conditioning Engineer, HVAC Engineer, AC Service Engineer, or similar in commercial building services environments.
• Strong practical knowledge of commercial air conditioning systems (VRV/VRF, splits, fan coils, chilled water systems, etc.).
• Valid F-Gas Category I certification (essential).
• Excellent fault-finding, repair, and customer service skills.
• Full clean UK driving licence (company van provided).
• Willingness to participate in the out-of-hours call-out rota.

Desirable:

• Hands-on experience with reactive and emergency works in commercial settings.
• Knowledge of BMS/controls, ventilation, or related mechanical systems.
• City & Guilds / NVQ Level 2/3 in Refrigeration & Air Conditioning (or equivalent).

What We Offer:

• Competitive salary with excellent earning potential through call-out payments, standby allowances, and overtime opportunities.
• Fully equipped company van + fuel card for business and home-to-site travel.
• Comprehensive benefits package: pension scheme, holiday entitlement, ongoing training & development.
• Varied, interesting work on prestigious commercial contracts with long-term clients.
• Supportive team environment in a stable, growing specialist business.

If you're a reliable, skilled Air Conditioning Engineer or HVAC Engineer passionate about reactive/call-out work and providing top-class service, apply today with your CV!

We are an equal opportunities employer committed to diversity and inclusion.

Apply now – highlight your relevant commercial PPM/reactive experience and F-Gas status for quick review.

Job Type: Full-time

Pay: £50,000.00-£55,000.00 per year

Benefits:

• Company car
• Company pension
• Free parking

Experience:

• HVAC Maintenance: 3 years (required)

Work Location: Hybrid remote in London