Mobile Air Conditioning Engineer
| Posting date: | 26 March 2026 |
|---|---|
| Salary: | £45,000 to £52,000 per year |
| Hours: | Full time |
| Closing date: | 25 April 2026 |
| Location: | South West London, London |
| Remote working: | On-site only |
| Company: | ISS Facilities Services |
| Job type: | Permanent |
| Job reference: | 153749 |
Summary
Mobile Air Conditioning Engineer
Contract: Key Account Network
Location: Kingston-upon-Thames + travel across SW London (Staines, Weybridge, Epsom, Brixton, Hammersmith, and in between)
Hours of work: 41.25 - 07:30 - 17:00 (includes travel time)
Contract Type: Permanent
We are seeking a skilled and proactive Mobile Air Conditioning Engineer to join our facilities team on a major government contract.
Working across multiple sites in South West London, you’ll deliver planned and reactive maintenance to ensure safe, compliant, and fully operational HVAC systems across a network of commercial buildings.
Job Description
This is a mobile role - all travel will be within the M25 – it’s ideal for someone with strong air conditioning and mechanical maintenance experience who enjoys variety, independence, and problem-solving.
You’ll carry out PPMs, reactive repairs, and system upgrades across a wide range of AC systems and associated plant – candidate must be multiskilled.
Key Responsibilities
Carry out scheduled PPMs and respond to reactive maintenance and breakdowns across a range of commercial sites.
Fault find, diagnose, and repair a variety of systems including Splits, VRFs, AHUs, DX systems, and some central plant.
Support system upgrades and retrofit installations where required.
Produce quotations for remedial works and system replacements following service visits.
Accurately complete electronic F-Gas paperwork and ensure SharePoint/job system updates are maintained.
Work both independently and collaboratively with other engineers and subcontractors.
Professional and Personal Competencies/Qualifications
Proven experience as a mobile air conditioning or HVAC engineer working in commercial environments.
F-Gas Certification (C&G 2079 – Category 1) – essential.
NVQ Level 2 in Air Conditioning & Refrigeration (minimum requirement) – Level 3 preferred
18th Edition would be highly desirable.
Full UK Driving Licence (no more than 6 points).
Experience with VRV/VRF systems and basic electrical fault finding.
Strong understanding of mechanical building services and general HVAC plant.
This is a varied and rewarding mobile role within a supportive FM team, offering stability, autonomy, and the opportunity to work across a wide range of commercial environments.
If you’re an experienced air conditioning engineer seeking a new challenge with great variety and responsibility, we’d love to hear from you.
The Company
ISS is a world-leading workplace and facility management company, connecting people and places to make the world work better. Working with customers day by day, side by side, we understand every aspect of the user experience.
Through a unique combination of intelligent solutions, high standards and people who care, to help our customers achieve their purpose, whether it’s hospitals healing patients, businesses producing the next great innovation, or airports bringing passengers home to their families. ISS is committed to doing business the right way, taking its corporate responsibility very seriously. Our passion is people.
We offer you a challenging and exciting career in an organisation with people at its heart. In ISS, everyone has the opportunity to develop, grow and make a difference. #Becomewhoyouwant, #Bepartofsomethingbigger,
#aplacetobeyou,
#facilitiesmanagement
ISS is proud to be a diverse and inclusive employer.
ISS welcomes all applicants regardless of age, disability, gender identity or gender reassignment, marital or civil partnership status, pregnancy or maternity, race (which includes race, colour, nationality, ethnic or national origin and caste), religion or belief, sex, sexual orientation or educational background.
We are proud to be a Gold Employer Recognition Scheme (ERS) award holder and a signatory of the Armed Forces Covenant, recognising our commitment to supporting veterans, reservists, and military families. Through our Joint Forces Programme, we provide mentoring and support to members of the Armed Forces community and their spouses as they transition into civilian careers.
We are a Disability Confident Committed (Level 2) employer, proudly supporting and promoting inclusive hiring practices in line with the UK government’s Disability Confident scheme.
Our passion for inclusivity and diversity makes ISS a more creative, productive and happy place to work.
If you have any further queries regarding this role, please contact the Resourcing Team by emailing resourcing.team@uk.issworld.com
Contract: Key Account Network
Location: Kingston-upon-Thames + travel across SW London (Staines, Weybridge, Epsom, Brixton, Hammersmith, and in between)
Hours of work: 41.25 - 07:30 - 17:00 (includes travel time)
Contract Type: Permanent
We are seeking a skilled and proactive Mobile Air Conditioning Engineer to join our facilities team on a major government contract.
Working across multiple sites in South West London, you’ll deliver planned and reactive maintenance to ensure safe, compliant, and fully operational HVAC systems across a network of commercial buildings.
Job Description
This is a mobile role - all travel will be within the M25 – it’s ideal for someone with strong air conditioning and mechanical maintenance experience who enjoys variety, independence, and problem-solving.
You’ll carry out PPMs, reactive repairs, and system upgrades across a wide range of AC systems and associated plant – candidate must be multiskilled.
Key Responsibilities
Carry out scheduled PPMs and respond to reactive maintenance and breakdowns across a range of commercial sites.
Fault find, diagnose, and repair a variety of systems including Splits, VRFs, AHUs, DX systems, and some central plant.
Support system upgrades and retrofit installations where required.
Produce quotations for remedial works and system replacements following service visits.
Accurately complete electronic F-Gas paperwork and ensure SharePoint/job system updates are maintained.
Work both independently and collaboratively with other engineers and subcontractors.
Professional and Personal Competencies/Qualifications
Proven experience as a mobile air conditioning or HVAC engineer working in commercial environments.
F-Gas Certification (C&G 2079 – Category 1) – essential.
NVQ Level 2 in Air Conditioning & Refrigeration (minimum requirement) – Level 3 preferred
18th Edition would be highly desirable.
Full UK Driving Licence (no more than 6 points).
Experience with VRV/VRF systems and basic electrical fault finding.
Strong understanding of mechanical building services and general HVAC plant.
This is a varied and rewarding mobile role within a supportive FM team, offering stability, autonomy, and the opportunity to work across a wide range of commercial environments.
If you’re an experienced air conditioning engineer seeking a new challenge with great variety and responsibility, we’d love to hear from you.
The Company
ISS is a world-leading workplace and facility management company, connecting people and places to make the world work better. Working with customers day by day, side by side, we understand every aspect of the user experience.
Through a unique combination of intelligent solutions, high standards and people who care, to help our customers achieve their purpose, whether it’s hospitals healing patients, businesses producing the next great innovation, or airports bringing passengers home to their families. ISS is committed to doing business the right way, taking its corporate responsibility very seriously. Our passion is people.
We offer you a challenging and exciting career in an organisation with people at its heart. In ISS, everyone has the opportunity to develop, grow and make a difference. #Becomewhoyouwant, #Bepartofsomethingbigger,
#aplacetobeyou,
#facilitiesmanagement
ISS is proud to be a diverse and inclusive employer.
ISS welcomes all applicants regardless of age, disability, gender identity or gender reassignment, marital or civil partnership status, pregnancy or maternity, race (which includes race, colour, nationality, ethnic or national origin and caste), religion or belief, sex, sexual orientation or educational background.
We are proud to be a Gold Employer Recognition Scheme (ERS) award holder and a signatory of the Armed Forces Covenant, recognising our commitment to supporting veterans, reservists, and military families. Through our Joint Forces Programme, we provide mentoring and support to members of the Armed Forces community and their spouses as they transition into civilian careers.
We are a Disability Confident Committed (Level 2) employer, proudly supporting and promoting inclusive hiring practices in line with the UK government’s Disability Confident scheme.
Our passion for inclusivity and diversity makes ISS a more creative, productive and happy place to work.
If you have any further queries regarding this role, please contact the Resourcing Team by emailing resourcing.team@uk.issworld.com
Proud member of the Disability Confident employer scheme
Disability Confident
About Disability Confident
A Disability Confident employer will generally offer an interview to any applicant that declares they have a disability and meets the minimum criteria for the job as defined by the employer. It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people. For more details please go to Disability Confident.