Lead Heat Pump Engineer / Heat Pump Manager

Infinity Energy Services Ltd; Southampton; On-site; GBP 40,000 - 60,000; Full time

Job summary

A renewable energy company in Southampton is seeking an experienced engineer to lead their new Air Source Heat Pump department. This role involves establishing workflows, managing installations, and providing technical guidance. Ideal candidates will possess strong skills in low-carbon heating systems, relevant plumbing qualifications, and previous leadership experience. The company offers a competitive salary, career progression opportunities, generous holiday allowance, and ongoing training within a supportive team culture.

Benefits

Competitive Salary & Annual Bonus

Career Progression

Generous Holiday Allowance

Private Medical Insurance

Wellbeing Perks

Team Culture

Ongoing Training

Supportive Environment

Qualifications

• Proven experience installing air source heat pumps or strong heating engineering background.
• Genuine passion for renewable technologies.
• Organised, proactive, and capable of building systems and processes.

Responsibilities

• Lead the setup of the ASHP department structure and workflows.
• Conduct installation commissioning and servicing of systems.
• Liaise directly with customers for exceptional service experience.

Skills

Experience installing air source heat pumps

Technical understanding of low-carbon heating systems

Plumbing/heating qualifications (NVQ Level 2/3, City & Guilds)

BPEC ASHP qualification

Unvented G3 certification

Leadership and mentoring experience

Organisational skills

Full UK driving licence

Job description

About the Role

Infinity Energy Services is expanding our renewable energy offering and launching a dedicated Air Source Heat Pump department. With the demand for low-carbon heating growing rapidly, we are looking for an experienced, forward-thinking engineer to lead this new division, shape best practices and deliver exceptional installations.

This is a unique opportunity for a skilled ASHP installer to step into a leadership and department-development role. You’ll be responsible not only carrying out high-quality domestic installs, but also play a key part in building, managing and growing the department from the ground up.

We already have a strong database of customers ready to go—this is a warm, supported opportunity to establish yourself in a growing field with a committed team behind you.

Job Opportunity

Department Setup & Leadership:

• Establish the ASHP department structure, workflows, and installation standards.
• Create and refine installation procedures, quality checklists, and compliance documentation.
• Assist with product selection, supplier partnerships, and inventory planning.
• Work with company leadership to develop the department’s strategy, targets, and growth roadmap.
• Train, mentor, and supervise engineers and apprentices as the team grows.
• Manage compliance with MCS to include the auditing processes and health & safety standards.

Installation & Technical Duties:

• Lead on the installation commissioning, servicing and handover of air-source heat pump systems.
• Conduct site surveys and complete system design and specification.
• Troubleshoot system issues and provide technical guidance .
• Liaise directly with customers to ensure exceptional service experience.
• Ensure all installations meet all technical, safety, and compliance requirements.

Essential Skills

• Proven experience installing air source heat pumps or a strong heating engineering background with genuine passion for renewable technologies
• Strong technical understanding of low-carbon heating systems
• Relevant plumbing/heating qualifications (NVQ Level 2/3, City & Guilds, or equivalent)
• BPEC ASHP qualification in design, installation and maintenance (preferred)
• Unvented G3 certification
• Experience leading teams or mentoring engineers (preferred)
• Organised, proactive, and capable of building systems and processes
• Full UK driving licence

Benefits

• Competitive Salary & Annual Bonus – Reflective of your skills and experience.
• Career Progression – Opportunities to grow as we grow, with clear development pathways.
• Generous Holiday Allowance – 25 days of annual leave plus bank holidays.
• Private Medical Insurance – Vitality cover and 24/7 GP access for peace of mind.
• Wellbeing Perks – Discounted gym memberships to help you stay active and healthy.
• Team Culture – Regular team-building events that make work enjoyable and collaborative.
• Ongoing Training – Continuous learning and professional development opportunities.
• Supportive Environment – A team-focused culture where your voice matters and your contributions are valued.