Commercial Boiler Engineer - Acorn Engineering Ltd : Job Details

Commercial Boiler Engineer

Location: London and the M25 Corridor

Salary: Competitive – dependent on skills and experience

Hours: 41.25 hours per week, with opportunities for overtime

Company Overview

Acorn has been delivering market-leading engineering and compliance services for over 40 years, supporting hundreds of sites across London and the Southeast. We provide a full range of mechanical, electrical, and fabric services, along with in-house specialist water treatment, gas, air conditioning, and electrical solutions. Our success is built on technical expertise, strong client relationships, and a commitment to excellence.

Role Overview

We are seeking a skilled and experienced Commercial Boiler Engineer to carry out planned preventative maintenance, servicing, and repair works across various contracts. This mobile role requires a professional who can work independently, deliver high-quality workmanship, and communicate effectively with clients and colleagues.

Key Responsibilities

• Service, maintain, and repair commercial boilers, combustion systems, and associated equipment.
• Work on low pressure, high pressure, power, steam, and hot water heating systems.
• Replace defective valves, filters, or gauges as required.
• Monitor boiler operations to ensure safety and efficiency, including periodic cleaning.
• Identify and address faults, escalating issues to management when necessary.
• Attend planned maintenance visits and respond to reactive callouts, including participation in the out-of-hours rota.
• Liaise with clients, suppliers, sub-contractors, and internal teams to ensure smooth project delivery.
• Complete accurate and timely service reports and job documentation.

Essential Knowledge & Skills

• Strong understanding of combustion systems.
• Knowledge of HVAC plant, including A/C, boilers, controls, heating/cooling systems, and ventilation.
• Understanding of building services, Legionella awareness, and Health & Safety requirements.
• Proficiency in Microsoft Word, Excel, and Outlook.
• Strong organisational, communication, and time management skills.
• Ability to work independently and as part of a team.

Qualifications – Non-Negotiable

• CCN1
• CEN1 (E)
• CODNCO1
• OFTEC qualification
• TPCP1A
• TPCP1
• Valid UK driving licence

Personal Attributes

• Professional, well-presented, and punctual.
• Self-motivated with a proactive approach.
• Problem-solving skills with the ability to assess and resolve breakdowns efficiently.