Heating Engineer CV Examples & Writing Guide
A heating engineer CV gets a call when a service manager sees the systems you can actually fix (gas and oil boilers, wet central heating, heat pumps), your call volume and first-time fix rate, your Gas Safe registration with ACS categories and any OFTEC registration, and a clean driving licence. Below is a full example plus apprentice and commercial versions.
Heating engineer CV example (domestic and light commercial central heating)
A fictional engineer, written the way a service manager reads. The systems come before the duties, the call numbers are in the bullets, and the registrations sit in their own block because the office cannot send you out without them.
Ryan Kowalczyk
Lead Heating Engineer (Gas and Oil Boilers)
Leeds · 07700 900173 | r.kowalczyk.heat@email.com | Full clean UK driving licence, on-call rota available
Summary
Heating engineer with 11 years on gas and oil boilers, warm air units and wet central heating systems. Runs 9 to 12 service calls a day through the heating season with an 88% first-time fix rate and a 4% 30-day recall rate. Carries out flue gas analysis and CO checks on every gas appliance touched. Gas Safe registered (ACS domestic core and appliances) and OFTEC registered for oil.
Experience
Lead Heating Engineer · Northbridge Heating Services (domestic and light commercial, 14 vans)
Sep 2021 – Present
- Diagnose and repair gas and oil-fired boilers, condensing combi and system boilers, warm air units and wet central heating systems across roughly 1,900 service calls a year, peaking at 12 no-heat calls in a single January day.
- Hold an 88% first-time fix rate and a 4% recall rate inside 30 days, tracked in Commusoft against a 10% company target.
- Run flue gas analysis on every gas appliance serviced: check CO and the CO/CO2 ratio against the manufacturer's figures, test flue integrity, and record the readings on the service record so the customer has a copy.
- Completed 46 boiler replacements in three heating seasons, including system powerflushing, magnetic filters, expansion vessel sizing, controls upgrades and Benchmark commissioning.
- Mentor two apprentices, sign off their portfolio evidence, and rebuilt the van stock list, which cut second trips for parts by about 30%.
- Carry the on-call phone one week in four through the October to March heating season.
Heating Service Engineer · Cedarcrest Heating Services (domestic servicing and boiler cover plans)
Apr 2018 – Aug 2021
- Worked a mixed breakdown and servicing route: about 8 calls a day in season, 6 annual services a day in the shoulder months.
- Completed roughly 420 annual boiler services a year: burner and heat exchanger clean and check, ignition and flame sensing electrodes, gas rate and burner pressure, safety devices, condensate trap and flue checks.
- Found 31 cracked or failing heat exchangers over three years using inspection cameras and flue gas readings, each documented with photos before the appliance was isolated and labelled under the Unsafe Situations Procedure.
- Converted 22 oil systems to natural gas alongside the install team, including flueing, gas pipework and tightness testing.
- Averaged £250 in parts, accessory and boiler cover plan revenue per call without a single upselling complaint on the review site.
Heating Installer and Apprentice Engineer · Halloran Plumbing & Heating
Jun 2015 – Mar 2018
- Installed around 80 boilers a year as the second engineer: fitted boilers, ran system pipework, installed flues, and tightness tested gas pipework.
- Soldered and pressed copper up to 54 mm, ran PEX underfloor heating loops, and fitted zone valves, pumps and manifolds.
- Completed a Level 3 plumbing and domestic heating apprenticeship (NVQ Level 3) with college day release, then passed the initial ACS gas assessment.
Education
Level 2 Diploma in Plumbing Studies
Further education college, Leeds, 2015
Level 3 apprenticeship, plumbing and domestic heating (NVQ Level 3)
Further education college, Leeds (day release), 2018
Certifications
- Gas Safe registered: ACS CCN1, CENWAT, CKR1, HTR1, reassessed 2023
- OFTEC registered technician, oil servicing and commissioning (OFT101)
- Unvented hot water (G3) and Water Regulations (WRAS)
- Manufacturer training: Worcester Bosch, Vaillant and Viessmann condensing boilers
- Asbestos awareness (UKATA), renewed 2026
- Emergency First Aid at Work, renewed 2025
Skills
What a service manager checks in the first minute
The person reading is usually a service manager who needs a van filled before the heating season starts. They are checking whether they can send you out unsupervised, and how soon.
- Which systems you can actually work on. Gas boilers, oil boilers, LPG, combi, system and regular boilers, warm air, heat pumps, underfloor. A CV that says "heating systems" tells a boiler firm nothing. List the fuel types and the system types.
- Whether you can be sent alone. First-time fix rate, recall rate, calls per day, and whether you have carried an on-call phone. These say more about employability than any adjective.
- Registration and ACS categories. Gas Safe registration with the right categories, OFTEC for oil, G3 for unvented cylinders. Sending you out is a legal question before it is a skills question, because gas work must be done by a Gas Safe registered engineer.
- Driving licence and availability. A clean licence, comfort with an on-call rota and willingness to work the October to March crunch matter more in this trade than in almost any other.
“Tell me what you can commission on your own and how often you go back a second time. If a CV gives me the boiler brands and a recall percentage, I book the interview before I finish the page.”
Heating engineer personal statement examples
Three or four lines. Years, systems, one performance number, and your top registration. Put the fuel type in the first sentence, because that is the filter.
Heating engineer with 11 years on gas and oil boilers, warm air units and wet central heating systems. Runs 9 to 12 calls a day in season at an 88% first-time fix rate and a 4% recall rate. Carries out flue gas analysis and CO checks on every gas appliance. Gas Safe registered (ACS domestic core and appliances) and OFTEC registered.
Commercial heating engineer working on LTHW boiler plant in schools, blocks of flats and light industry. Maintains 38 boilers from 120 kW to 900 kW, keeps the plant's service and gas safety records up to date, and holds commercial ACS categories (COCN1 and appliances).
Heating installer of eight years, around 80 boiler changes a year. Strong on system pipework, flue installation, controls and gas tightness testing, with 22 oil-to-gas conversions completed. Wants to move from installation into servicing and diagnostics.
Plumbing and heating college leaver with 640 workshop hours and one heating season as an engineer's mate on a service van. Comfortable with meter work, flame sensing and ignition electrodes, condensate traps and stripping down a burner. Working towards ACS through a managed learning programme, asbestos awareness complete, full clean driving licence.
Heating technician with nine years on residential and light commercial gas systems in the US, formerly EPA 608 and NATE certified. Boiler and furnace service, hydronic systems, controls and full heating installs. Now UK-based and working towards ACS assessment and Gas Safe registration.
Service bullets that show you can diagnose, not just swap parts
Anyone can replace a part the last engineer already identified. The bullets that get you hired show a fault you found, the test you used to find it, and what happened after.
| Typical bullet | Bullet that shows the skill |
|---|---|
| Repaired boilers. | Diagnosed and repaired gas and oil boilers, condensing boilers and warm air units on about 1,900 calls a year, including no-heat breakdowns at 12 calls a day in January. |
| Carried out boiler servicing. | Completed roughly 420 annual boiler services a year: burner and heat exchanger clean and check, flame sensing, gas rate and burner pressure, and safety device tests, recorded on a written service record per appliance. |
| Tested appliances for safe operation. | Ran flue gas analysis on every gas appliance serviced, checked CO and the CO/CO2 ratio against manufacturer figures, tested flue integrity, and recorded the readings on the customer's service record. |
| Installed new heating systems. | Completed 46 boiler replacements in three heating seasons, including powerflushing, magnetic filters, expansion vessel sizing, controls upgrades and Benchmark commissioning. |
| Identified safety issues. | Found 31 cracked or failing heat exchangers over three years using an inspection camera and flue gas readings, each documented with photos before the appliance was isolated and labelled under the Unsafe Situations Procedure. |
| Worked in customers' homes. | Held a 4.9 average review score over 300-plus reviews with zero upselling complaints, while averaging £250 in parts, accessory and boiler cover plan revenue per call. |
| Trained junior staff. | Mentored two apprentices, signed off their portfolio evidence, and rebuilt the van stock list, cutting second trips for parts by about 30%. |
| Responded to emergency calls. | Carried the on-call phone one week in four from October to March, with a two-hour response commitment on no-heat calls. |
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Gas Safe, ACS categories, OFTEC and manufacturer training
This is the block a service manager reads first, so put it near the top if your registrations are strong. Use the exact names.
- Gas Safe Register: by law, gas work in the UK must be done by a Gas Safe registered engineer. List your registration and the ACS categories on your ID card (for example CCN1, CENWAT, CKR1, HTR1), not just "Gas Safe registered".
- ACS reassessment: categories run for five years. Give the reassessment date so the reader knows they are current, and say whether you hold domestic or commercial categories.
- OFTEC registration for oil, and HETAS for solid fuel where it is relevant. Name the OFTEC courses you hold rather than just "OFTEC trained".
- Unvented hot water (G3) and Water Regulations (WRAS) certificates: needed for cylinder work and widely asked for on combined plumbing and heating jobs.
- Heat pump and low-carbon qualifications: a Level 3 heat pump award, F-Gas certification if you work on refrigerant circuits, and experience on MCS-certified installations. The shift towards low-carbon heating is pushing more firms to ask for them.
- Manufacturer training: Worcester Bosch, Vaillant, Baxi, Ideal, Viessmann, Glow-worm. Naming the brands you are trained on is one of the strongest signals on this CV, because firms carry specific lines.
- Gas licences from other countries do not transfer to the Gas Safe Register. If you trained abroad, list that as past experience and add the UK assessments you have passed or are working towards.
Add your driving licence status and whether it is clean. Almost every advert in this trade asks, and candidates who leave it out get asked in the screening call anyway.
The equipment list that does the real work on this CV
Service managers hire for the systems on their patch. A short, specific equipment block often beats the whole skills section. Group it so a reader can scan it in five seconds.
- Heat sources: combi, system and regular gas boilers, oil-fired boilers, condensing and modulating boilers, LPG boilers, warm air units, air source heat pumps, water heaters, unit heaters.
- Distribution: radiators and TRVs, two-pipe and microbore systems, underfloor heating with PEX manifolds, zone valves and wiring centres, circulating pumps, expansion vessels, open vented and sealed systems.
- Controls and safeties: programmers, room and cylinder thermostats, weather compensation, pressure relief valves, flame supervision devices, ignition and PCB diagnosis, low pressure switches.
- Test instruments: flue gas analyser, digital manometer, multimeter, clamp meter, inspection camera, CO detector, smoke pump for oil, draught gauge.
- Fabrication: copper soldering and press fittings, steel gas pipe, PEX and multilayer pipe, threading, CSST where the installation allows it.
If your work is mostly oil, say so in the headline. Oil-fired heating is concentrated in homes off the gas grid, and firms with oil customers on the books will call a candidate who names it.
Apprentice, engineer's mate or college leaver
With no heating seasons behind you, the CV has to prove three things: you are on the qualification route, you can hold a meter, and you will turn up at 7am in February.
- 1Get asbestos awareness and, if you can, your Level 2 plumbing qualification before you apply. They are early filters, and having them already puts you above most other entry applicants.
- 2Count your college hours: "640 workshop hours on gas, electrics and plumbing" is real training, so write it as a number instead of naming the course only.
- 3List everything you have physically done, even as a mate: stripped a burner, replaced an ignition electrode, changed a pump, ran PEX, cleared a condensate trap, carried boilers up loft ladders.
- 4Put reliability facts on the page: clean driving licence, no restrictions, comfortable on call, able to carry heavy appliances safely, own hand tools.
- 5Add any adjacent work that transfers. Plumber's mate, appliance repair, vehicle mechanic and electrician's mate all read well, because they show meter work, fault finding and customer contact.
Format, length and advert keywords
One page. Reverse chronological. No photo and no date of birth. Trade employers scan for registration names and equipment, so keep those in plain text rather than in a graphic or a sidebar column.
- Mirror the advert language: boiler, central heating, combi, condensing, flue gas analysis, gas pipework, tightness testing, Gas Safe, ACS, OFTEC, unvented, service call, first-time fix, recall rate, planned maintenance, on-call, breakdown.
- Larger contractors, housing associations and energy companies use applicant tracking systems, so use one column, standard headings, and a PDF named FirstName-LastName-Heating-Engineer.pdf.
- Put registrations and qualifications above education. Your Gas Safe registration is the reason you can be sent out; your college certificate is background.
- Give van-level facts: area covered, calls per day, whether you had your own van, and the software you invoiced in (Commusoft, Joblogic, BigChange).
- If your work is seasonal, group the summers rather than leaving gaps. Many heating engineers do bathroom installs or new-build work in summer, which is normal and worth naming.
Frequently asked questions
What does a heating engineer do, and what should the CV emphasise?
Installs, services and repairs heating systems: gas and oil boilers, heat pumps, central heating pipework, controls and safety devices. The CV should emphasise which fuel types and system types you handle, your diagnostic work (flue gas analysis, meter testing, safety checks), and how many calls you complete without a return visit.
Is a heating engineer CV different from a US heating technician resume?
The content overlaps almost entirely; the conventions differ. A UK CV leaves out photo, date of birth and marital status, and uses UK registrations such as Gas Safe, ACS categories and OFTEC rather than US credentials such as EPA 608 and NATE. If you trained in the US, mention those as a one-line note about where you trained.
Do I need F-Gas if I only work on boilers?
Not for the boiler work itself, since F-Gas certification covers refrigerant handling. It becomes relevant if you move into heat pump or air conditioning work that involves the refrigerant circuit, and some employers ask for it for that reason. Check what the job involves before booking the course.
What skills should I put on a heating engineer CV?
Flue gas analysis and CO testing, gas and oil burner set-up, boiler fault diagnosis, central heating pipework and balancing, gas pipe sizing and tightness testing, controls and wiring, soldering and press fitting, plus the job management software you use. Then name the boiler brands you are manufacturer trained on.
How do I write a heating engineer CV with no experience?
Lead with your college qualification, your workshop hours as a number, any ACS route you are on, and the specific tasks you have done as a mate. Add reliability facts most employers ask about anyway: clean driving licence, ability to work on call, comfort with loft and under-floor work, own hand tools.
Should I list first-time fix rate and recall rate?
Yes, if your firm tracked them and you can quote the target you were measured against. An 88% first-time fix rate against a company target, or a 4% recall rate, is the fastest way to show you can be sent out alone. If nobody tracked it, use calls per day and on-call weeks instead.
How long should a heating engineer CV be?
One page for almost everyone in this trade. Two pages only if you also carry commercial plant responsibility, project management or a supervisory role. Keep older mate and install roles to two or three lines each.
Should I combine plumbing and heating on one CV?
Combine them if you are applying to a plumbing and heating firm, which is common across the UK, and lead with whichever the advert names first. If the employer is a pure heating or boiler service company, keep plumbing to one line under skills so it does not dilute the heating story.
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How this page was made: a first draft was written with AI assistance from cvplex's example library, then edited and fact-checked by the cvplex Careers Team. Examples are fictional composites; numbers are illustrative. Report an error via the editorial policy page.