Senior Air Conditioning Technical Lead

Acorn Limited; Slough; On-site; GBP 42,000 - 60,000; Full time

Benefits offered by this job

Family Friendly Pay

Life Assurance

Death in Service Insurance

360 Wellbeing App

Fertility Treatment Support Leave

Paid Maternity Leave

Paid Paternity Leave

Gym membership discounts

Refer-a-Friend Bonus

Recognition Programme

Job summary

Acorn Limited is seeking an experienced Air Conditioning Supervisor to join our team in Slough and the South East. This hands‑on leadership role guides on‑site technicians, supports engineers, and drives technical excellence across a varied commercial portfolio.

You will provide expert fault diagnosis, oversee maintenance and repairs, ensure F‑Gas compliance, and mentor engineers. Regular travel to client sites is involved; salary is dependent on experience, with a 41.25‑hour week and a strong

Qualifications

• Proven experience as a senior Air Conditioning or HVAC Engineer.
• Strong fault-finding and diagnostic capabilities.
• Excellent technical knowledge across a range of AC systems.
• F‑Gas Category 1 Certification.
• Full UK Driving Licence.
• Strong communication and organisational skills.
• Ability to influence and support engineers across multiple sites.
• Experience supporting quotations, surveys, and remedial projects.
• Knowledge of CAFM systems and digital reporting tools.
• Experience within commercial environments.
• IOSH Working Safely or equivalent Health & Safety qualification.
• Additional manufacturer training and certifications.

Responsibilities

• Provide technical support and guidance for complex air conditioning faults and system issues.
• Carry out maintenance, servicing, repairs, and fault diagnosis across a range of AC equipment.
• Support engineers on‑site, ensuring work is completed safely and to a high standard.
• Ensure compliance with F‑Gas regulations and company procedures.
• Assist with technical surveys, remedial proposals, and system improvement recommendations.
• Mentor and develop engineers through coaching and sharing best practice.
• Maintain exceptional standards of quality, customer service, and technical compliance.

Skills

Fault finding

Technical knowledge

Communication

Organisational skills

Influence engineers

Education

F-Gas Category 1 Certification

Tools

CAFM systems

Job description

Acorn Limited is seeking an experienced Air Conditioning Supervisor to join our team in Slough and the South East. This hands‑on leadership role guides on‑site technicians, supports engineers, and drives technical excellence across a varied commercial portfolio.

You will provide expert fault diagnosis, oversee maintenance and repairs, ensure F‑Gas compliance, and mentor engineers. Regular travel to client sites is involved; salary is dependent on experience, with a 41.25‑hour week and a strong