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A duct fitter, also known as a ductwork installer or HVAC duct installer, is a specialist tradesperson who installs, repairs, and maintains ventilation and air conditioning ductwork systems in commercial, industrial, and residential buildings. Duct fitters work with sheet metal, fibreglass duct board, flexible ducting, and pre-insulated ductwork to create the networks that carry heated, cooled, and extracted air throughout a building. Without ductwork, HVAC systems cannot function - making duct fitters essential on almost every non-domestic construction project in the UK.
According to the Association of Ductwork Contractors and Allied Services (ADCAS), the trade body representing UK ductwork contractors, the ductwork sector faces a significant skills shortage. The Building Engineering Services Association (BESA) states that DW/144 remains the definitive specification for the design, manufacture, and installation of sheet metal ductwork in the United Kingdom. Duct fitters who understand and can work to DW/144 are in serious demand across the industry.
What Does a Duct Fitter Do?
A duct fitter working on a UK construction site typically performs the following tasks:
- Reading drawings: Interpreting HVAC design drawings, ductwork layouts, and installation specifications to determine where duct runs go, what sizes are needed, and how branches connect.
- Manufacturing and assembling ductwork: Cutting, forming, and assembling sheet metal duct sections - rectangular, circular, and flat oval - to the dimensions specified in the design. This includes flanging, seaming, and riveting joints.
- Installing ductwork: Hanging and supporting duct runs from ceilings, walls, and structural steelwork using threaded rod, brackets, and trapeze supports. Ensuring all supports comply with DW/144 spacing requirements.
- Sealing and testing: Sealing all joints and connections to prevent air leakage, then pressure-testing the system to verify it meets the specified leakage class.
- Installing ancillaries: Fitting fire dampers, volume control dampers, grilles, diffusers, louvres, and access doors at the positions shown on the drawings.
- Working with other trades: Coordinating with M&E engineers, electricians, plumbers, and ceiling contractors to ensure ductwork runs do not clash with other services.
Duct fitters work on a wide range of projects including commercial office buildings, hospitals, schools, shopping centres, data centres, manufacturing facilities, and residential developments with mechanical ventilation systems.
What Qualifications and Cards Do Duct Fitters Need?
Duct fitters in the UK need a combination of qualifications and a skills card to work on construction sites. The requirements are:
- Level 2 NVQ Diploma in Heating and Ventilating Ductwork Installation (City & Guilds 6188): This is the primary qualification for duct fitters. It covers installing, repairing, and maintaining heating and ventilation systems and inspecting and testing mechanical systems. The qualification is assessed on-site by an assessor who observes you carrying out real ductwork installation work. Details at cityandguilds.com/.../6188.
- SKILLcard (Blue Skilled Worker): The Engineering Services SKILLcard is the card scheme for the building services engineering sector, operated by BESA. For duct fitters, the Blue SKilled Worker SKILLcard requires a relevant NVQ/SVQ Level 2 and a passed health and safety test. The card is valid for 5 years. Details at skillcard.org.uk/types-of-skillcard.
- CSCS card: Some construction sites accept a CSCS card instead of a SKILLcard, particularly if the duct fitter is working through a general construction contractor rather than a BESA member. However, the SKILLcard is the industry-standard card for ductwork operatives and is increasingly specified by main contractors.
The CITB Health, Safety and Environment test required for the Blue SKILLcard is the Specialist HVACR Ductwork test. This test includes questions from the five core knowledge areas contained in the Operatives test plus specialist questions relevant to ductwork installation. The test costs £22.50 and the pass result is valid for 2 years. Booking details are at citb.co.uk/.../booking-your-hse-test.
Duct Fitter Pay Rates September 2026
Pay rates for duct fitters have risen steadily over the past three years due to the skills shortage and increasing demand for ventilation systems post-pandemic. Current rates from live SiteJobs listings:
- Trainee duct fitter / duct fitter mate: £16-20/hour
- Duct fitter (NVQ Level 2, SKILLcard): £22-28/hour
- Experienced duct fitter (multi-skilled): £26-32/hour
- Lead duct fitter / ductwork foreman: £30-38/hour
- Day rate (experienced, contract): £220-£320/day
- London and South East premium: add 10-20% to all rates
According to Indeed salary data, the average salary for an HVAC installer in the UK is approximately £44,726 per year, based on 89 salaries reported in the past 36 months. Duct fitters working on night shifts or in heavily industrial environments (such as factories and data centres) often command higher rates due to the working conditions.
Check live rates on SiteJobs - search sitejobs-code15 on Google.
The DW/144 Ductwork Specification
Every duct fitter working in the UK needs to understand DW/144. Published by BESA, DW/144 is the definitive specification for sheet metal ductwork in the UK. It covers:
- Materials: Galvanised steel, stainless steel, aluminium, and coated steels - specifying gauges and material grades for different duct sizes and pressure classes.
- Manufacturing: How duct sections are formed, seamed, and reinforced to meet structural and airtightness requirements.
- Installation: Support spacing, hanging methods, sealing requirements, and tolerance limits for duct runs.
- Pressure classes: DW/144 defines three pressure classes - low, medium, and high - each with different leakage limits and construction standards.
- Testing: Procedures for pressure testing and leakage classification to verify the installed system meets specification.
BESA also publishes DW/144-related guidance through the BESA technical blog. Duct fitters are expected to work to DW/144 on all commercial and industrial projects unless the project specification states otherwise.
Key Equipment Used by Duct Fitters
Ductwork installation requires a range of specialist tools and equipment:
- Hand tools: Tin snips (straight, left-cut, right-cut), aviation snips, duct stretchers, seaming pliers, hand groovers, and rivet guns.
- Power tools: Cordless drills, power shears, nibblers, angle grinders, and powered flanging tools.
- Measuring and layout: Tape measures, spirit levels, laser levels, chalk lines, and marking gauges.
- Lifting equipment: Powered access platforms (MEWPs), scissor lifts, and lifting straps for positioning large duct sections. An IPAF PAL card is often required for operating MEWPs.
- Power access: Ladders and step ladders for low-level ductwork, with appropriate PASMA training for tower scaffolds.
- PPE: Cut-resistant gloves, safety glasses, ear protection (particularly when using power tools), safety boots, hi-vis vest, and hard hat. Duct fitters working with fibreglass duct board also need respiratory protection.
How to Become a Duct Fitter
There are several entry routes into duct fitting in the UK:
- Apprenticeship: The most common route. BESA member companies and HVAC contractors offer apprenticeships combining on-site experience with college study towards the Level 2 NVQ Diploma in Heating and Ventilating Ductwork Installation (C&G 6188). Apprenticeships typically take 2-3 years. The BESA Academy coordinates apprenticeship training across the UK.
- Direct entry to a ductwork contractor: Many ductwork contractors hire trainees with no previous experience and provide training on the job. You start as a duct fitter mate, assisting experienced fitters, and work towards your NVQ while earning. This route takes longer but you earn from day one.
- Experienced Worker Programme: For adults who have been working as duct fitters but do not hold a formal qualification, BESA offers an Experienced Worker Programme that assesses your existing skills and awards the NVQ without requiring you to go back to college full-time.
- Transfer from another trade: Sheet metal workers, fabricators, and general construction operatives who are comfortable with hand tools and reading drawings can transition into duct fitting. The main requirement is completing the NVQ Level 2 and passing the CITB HS&E Specialist HVACR Ductwork test.
The total cost of training for a new entrant starting from scratch is typically under £1,000 if arranged through an employer or apprenticeship scheme. The CITB HS&E test costs £22.50, the SKILLcard application costs £40 (digital) or £70 (physical), and the NVQ is usually funded through the employer or an apprenticeship grant.
Ductwork Safety - Key Hazards and Controls
Working with sheet metal ductwork involves specific hazards that duct fitters must manage:
- Sharp edges: Cut sheet metal has extremely sharp edges that can cause severe lacerations. Cut-resistant gloves are mandatory when handling duct sections. All cut edges should be deburred before installation.
- Working at height: Ductwork is typically installed at ceiling level or on rooftops. Duct fitters must use appropriate access equipment (MEWPs, scaffolding, towers) and wear fall protection where required. The HSE work at height regulations apply.
- Manual handling: Duct sections can be heavy and awkward to manoeuvre, particularly in confined ceiling voids. The Manual Handling Operations Regulations 1992 require employers to assess and reduce manual handling risks. Details at legislation.gov.uk/.../1992/2793.
- Noise: Power tools used in ductwork fabrication and installation generate noise levels above 80 dB. Ear protection is mandatory under the Control of Noise at Work Regulations 2005. Details at legislation.gov.uk/.../2005/1643.
- Confined spaces: Duct fitters sometimes need to work inside large ducts or in tight ceiling voids. Confined space entry requires training, atmospheric monitoring, and rescue procedures under the Confined Spaces Regulations 1997. Details at legislation.gov.uk/.../1997/1718.
- Asbestos: Ductwork in buildings constructed before 2000 may be connected to or pass through asbestos-containing materials. Duct fitters must hold a valid UKATA Asbestos Awareness certificate and know how to stop work and report if they encounter suspected ACMs. HSE guidance at hse.gov.uk/asbestos.
Industry Bodies and Trade Associations
Several organisations represent and support the ductwork sector in the UK:
- BESA (Building Engineering Services Association): The main trade body for building services contractors, including ductwork. BESA publishes DW/144, operates the SKILLcard scheme, and provides training through BESA Academy. Website: thebesa.com.
- ADCAS (Association of Ductwork Contractors and Allied Services): The dedicated trade body for ductwork contractors and allied suppliers. ADCAS promotes better specification, design, and installation of ductwork and runs the Ductwork Installer Competence Group (DICG). Website: adcas.co.uk.
- SKILLcard: The skills certification card scheme for the building services engineering sector, operated by BESA. Website: skillcard.org.uk.
- BESCA (Building Engineering Services Competence Accreditation): BESA's certification body, offering Competent Person Scheme registration and other certification services. Website: besca.org.uk.
What Employers Are Hiring Now?
SiteJobs currently lists 164 duct fitter vacancies across the UK. The biggest employers include:
- Specialist ductwork contractors such as Senior Hargreaves, Airmec, GibbsAir, and Cambridge Filter
- M&E contractors with in-house ductwork teams including NG Bailey, Crown House Technologies, and Elliott Wood
- HVAC installation companies working on commercial office fit-outs, hospital refurbishments, and school building programmes
- Data centre contractors where large-scale ventilation and cooling ductwork is critical
- Industrial ductwork specialists working on factory extraction systems, fume cupboards, and dust collection
Instead of searching each company's careers page individually, browse all their duct fitter vacancies in one place on SiteJobs. Every listing has a real phone number so you can call direct. Search sitejobs-code15 on Google to find us.
Multilingual Information / Informatie multilingva
Romana
Locuri de munca duct fitter UK. Instalare sisteme de ventilatie si aer conditionat. Calificare NVQ Level 2 Ductwork (C&G 6188) si SKILLcard obligatorii. Plata £22-35/ora. 164 locuri de munca disponibile. Cauta sitejobs-code15 pe Google si suna direct.
Shqip
Pune duct fitter UK. Instalimi i sistemeve te ventilimit dhe kondicionimit. Kualifikimi NVQ Level 2 Ductwork (C&G 6188) dhe SKILLcard te domosdoshme. Paga £22-35/ore. 164 vende pune te disponueshme. Kerko sitejobs-code15 ne Google dhe telefono direkt.
Russkij
Rabota montazhnikom vozdukhovodov v UK. Ustanovka sistem ventilyatsii i konditsionirovaniya. Trebuyutsya kvalifikatsiya NVQ Level 2 Ductwork (C&G 6188) i SKILLcard. Stavka £22-35/chas. 164 vakansiy. Ischite sitejobs-code15 v Google i zvonite napryamuyu.
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