[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Johnson Controls International jobs](https://jobs.opennash.com/companies/johnson-controls-international/) · [Search jobs](/search/) Johnson Controls International · Multiple locations # Commercial HVAC and Gas Engineer Multiple locations Full-time Sales Listed on Johnson Controls International’s official careers site. Listed as of October 20, 2026. Check that it is still open and apply there. [Apply on Johnson Controls International’s careers site →](https://jci.wd5.myworkdayjobs.com/JCI/job/Didcot-Oxfordshire-United-Kingdom/Commercial-HVAC-and-Gas-Engineer_WD30255904) [OpenNash Jobs](https://jobs.opennash.com/) / [Johnson Controls International](https://jobs.opennash.com/companies/johnson-controls-international/) / Commercial HVAC and Gas Engineer ## Job description Join Password Services Air Conditioning Ltd., part of Johnson Controls, as a Commercial HVAC & Gas Engineer. In this mobile role, you’ll work at blue-chip client sites across the central region (Birmingham to Watford), ensuring HVAC and gas systems operate at peak performance. You’ll be the primary technical contact for service issues—troubleshooting, repairing, and maintaining complex systems to deliver exceptional service. ### What You’ll Do Carry out service, maintenance, and repairs on HVAC & refrigeration systems at client sites. Install, service, and maintain gas and electric water heaters. Replace and commission new heating systems and components. Diagnose and resolve faults quickly and efficiently. Perform Gas Safety checks on appliances and pipework installations. Maintain internal and external water systems for optimal performance. Ensure compliance with Health & Safety regulations and industry standards. Complete accurate job sheets, service reports, and compliance documentation. Liaise with clients and participate in an on-call rota for emergency call-outs. ### What We’re Looking For Proven HVAC service experience (e.g., AHUs, gas heaters). Strong knowledge of HVAC systems (cold rooms, display cabinets, chillers, cellar cooling, ice machines). Excellent troubleshooting skills. Ability to work independently and as part of a team. ### Qualifications NVQ Level 2 or equivalent in Air Conditioning & Refrigeration F-Gas certification. Commercial Gas qualifications (CODNCO1, CIGA1, ICPN1). Gas Safe Registered. Full UK driving licence and willingness to travel. ### What We Offer Competitive salary + premium overtime rates, standby allowance, and paid call-outs. ### Tools for success Service van, mobile, tablet, PPE, and specialist tools. ### Generous leave 25 days holiday + bank holidays. ### Benefits Pension, life assurance, EAP, referral scheme, retail discounts, Cycle2Work, and discounts on Johnson Controls products. ### Safety-first culture Zero Harm policy. ### Inclusive environment Access to Johnson Controls business resource groups with training and development opportunities Ready to thrive in a supportive, empowering culture where your work is valued? Apply now and take the next step in your HVAC career! #LI-DC1 #LI-remote ## At a glance - Posted by the employer: Not stated - First seen by OpenNash: Oct 13, 2026 - Last checked: Oct 20, 2026 - Listed for: 7 days - Location: Multiple locations - Employment type: Full-time[Apply on Johnson Controls International’s careers site →](https://jci.wd5.myworkdayjobs.com/JCI/job/Didcot-Oxfordshire-United-Kingdom/Commercial-HVAC-and-Gas-Engineer_WD30255904) ## More jobs at Johnson Controls International ### [Channnel Account Manager, HVAC Controls](https://jobs.opennash.com/companies/johnson-controls-international/jobs/c4693fb6988163a4c97e/) ### [Manager - Indirect Applied Channel Sales](https://jobs.opennash.com/companies/johnson-controls-international/jobs/d3ab7b45c86cfe957302/) ### [Account Manager (m/w/d) – Retail Solutions (Slowakeiweit))](https://jobs.opennash.com/companies/johnson-controls-international/jobs/8275ad7f5aa4e86c7c5d/) ### [Bauleitender Monteur (m/w/d)](https://jobs.opennash.com/companies/johnson-controls-international/jobs/087ae5033fb2e514271c/) ### [Controls Systems Technician](https://jobs.opennash.com/companies/johnson-controls-international/jobs/1509cba10a76697f4a0c/) ## Similar jobs at other companies ### [Commercial Officer - Gas Service](https://jobs.opennash.com/companies/siemens-energy/jobs/36f8c0e1f9aea85c43dc/) Siemens Energy ### [Mobile Gas Engineer](https://jobs.opennash.com/companies/jones-lang-lasalle/jobs/8911599417ea3cbd4110/) Jones Lang LaSalle · London, GBR ### [Project Engineer - Gas Testing & Instrumentation](https://jobs.opennash.com/companies/sgs/jobs/1362d938453b31eebbdd/) SGS · Wicklow, Ireland ### [Gas Turbine Digitalization Solutions Engineer](https://jobs.opennash.com/companies/siemens/jobs/184dd4224b4a925057d2/) Siemens ### [Gas Turbine Technical Solutions Engineer](https://jobs.opennash.com/companies/siemens/jobs/f40d7f0d921483aca31b/) Siemens OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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