07868 255993gary@linehanelectrical.com Mon–Fri 8–6 · Sat 9–12:30 · Phone line 24 hours AboutServices Electrical - All Types of Electrical Work - Domestic Electrical Work - Commercial Electrical Work - LV Panel Board Installation Installations & Repairs - Consumer Unit (Fuseboard) Upgrades - Full and Partial Rewires - Lighting Installation - Outdoor Lighting - EV Charger Installation - Fault Finding and Electrical Repairs Testing - EICRs (Electrical Installation Condition Reports) Mechanical Air Con Service Areas HertfordshireAll of HertfordshirePopular areas include - Stevenage - Hitchin - Letchworth Garden City - Baldock - Knebworth - Welwyn Garden City - Hertford - St Albans - Royston BedfordshireAll of BedfordshirePopular areas include - Luton CambridgeshireAll of CambridgeshirePopular areas include - St Neots LondonAll London boroughs Not listed? We cover the whole of each county. Call 07868 255993. Our WorkReviewsContact07868 255993Free Quote - Home - Services - MechanicalMechanical & Plumbing # Mechanical, Plumbing& Associated Works in Stevenage Mechanical, plumbing and associated works delivered alongside your electrical project, with specialist gas and F-Gas elements handled by registered subcontractors, all coordinated through one point of contact. Get My Free Quote07868 255993 20 years in the trade · £10m public liability cover 20 years experience 4.95/5 TrustATrader rating £10m public liability cover £10m employers' liability cover The service ## Mechanical and plumbing works, alongside electrical Linehan Mechanical & Electrical Ltd is, as the name suggests, primarily an electrical contractor, but mechanical, plumbing and associated works are offered as a supporting service on projects that need them. Gary Linehan has run the business for 20 years, based in Stevenage and working across Hertfordshire, Bedfordshire, Cambridgeshire and London. This supporting offer exists so a project doesn't need multiple separate contractors coordinating around each other on site. Where a job includes elements that require F-Gas or Gas Safe registration, that work is carried out by registered subcontractors, not by Linehan directly, so you still get specialist, qualified hands on that part of the job, managed through the same point of contact as the electrical works. This is a supporting service to the electrical side of the business, not a standalone mechanical contracting arm. It's most relevant on larger domestic and commercial projects where mechanical and electrical works happen side by side: a renovation, a fit-out, or a bigger installation where coordinating trades matters. As with every job, a clear, free quote comes first, and the business carries £10m public liability and £10m employers' liability insurance across its work. ### Who this is for - Homeowners with a renovation involving both electrical and mechanical elements - Businesses running a fit-out needing coordinated trades - Developers needing mechanical and electrical works planned together - Property owners needing associated works alongside an electrical upgrade - Anyone already using Linehan for electrical work who needs related mechanical elements covered too Common problems ## Why coordinating mechanical and electrical work matters Mechanical and electrical works often sit close together on a project: in the same plant room, the same ceiling void, the same kitchen or bathroom. Poor coordination between separate trades causes delays and rework. ### Clashing trades on site Separate contractors working without coordination can duplicate access, damage each other's completed work, or hold each other up. ### Unclear scope boundaries Without one point of contact managing the whole job, it's easy for parts of a project to fall between two contractors. ### Unregistered work on gas or F-Gas elements Gas and F-Gas work must be carried out by properly registered engineers | this is non-negotiable, and it's why Linehan uses registered subcontractors for that specific work rather than doing it in-house. ### Delays from poor sequencing Mechanical and electrical works often need to happen in a particular order on site | getting that sequencing wrong adds time to a project. ### Inconsistent quality across trades Mixing contractors with different standards can leave one part of a job finished to a lower standard than another. ### Common mistakes we see - ×Booking mechanical and electrical trades separately without coordinating access or sequencing - ×Assuming any contractor can carry out gas or F-Gas work without the right registration - ×Not confirming who's responsible for which part of a mixed-scope job - ×Leaving mechanical elements until electrical work is already complete, causing avoidable rework - ×Skipping a site visit on larger mixed-scope jobs and relying on a rough estimate How we work ## How a mechanical and electrical project is coordinated - 01 ### Scope the job Describe the project and which elements are mechanical, plumbing or associated works alongside the electrical scope. Larger jobs get a free site visit. - 02 ### Plan the sequence Work is planned so mechanical, plumbing and electrical elements happen in the right order, minimising clashes and repeat visits. - 03 ### Bring in registered subcontractors where needed Any work requiring F-Gas or Gas Safe registration is carried out by registered subcontractors, coordinated as part of the overall project. - 04 ### Carry out and test the work Electrical elements are tested to BS 7671. Mechanical and plumbing elements are checked and signed off by the subcontractor responsible for that scope. - 05 ### Completion and guarantee The finished project is handed over with everything explained. Linehan's own workmanship is guaranteed for 12 months. Subcontracted elements carry their own terms. What you get ## Why coordinate mechanical works through Linehan ### One point of contact A single contact manages the mechanical, plumbing and electrical scope together instead of you juggling separate trades. ### Specialist work by registered trades F-Gas and Gas Safe elements go to registered subcontractors, so that part of the job is in the right hands. ### Less disruption on site Coordinated sequencing between trades reduces repeat visits and clashing access. ### Fair, upfront pricing A free quote covers the whole scope before any work starts. ### Consistent standards Electrical elements are tested to BS 7671 and carry the same 12-month guarantee as any other Linehan job. ### 20 years of project experience Two decades coordinating jobs of all sizes, from domestic renovations to larger commercial projects. In detail ## What mechanical and associated works cover Mechanical, plumbing and associated works are offered alongside electrical projects, not as a separate standalone service. Here's how that works in practice. ### Scope of the supporting offer This service covers mechanical, plumbing and associated works that sit alongside an electrical project: coordinating the wider job rather than running a separate mechanical contracting business. Specific mechanical scopes such as heating, ventilation and plant work in-house are still being confirmed, so if your project needs one of these, it's best discussed directly so the right arrangement, in-house or subcontracted, can be confirmed for your job. What is confirmed is that on larger projects, elements requiring F-Gas or Gas Safe registration are delivered by registered subcontractors, giving you access to specialist, properly qualified trades without managing them separately yourself. ### Methods and standards Electrical elements of any mixed-scope project are still carried out to BS 7671, the UK wiring regulations, with the same testing sequence as any standalone electrical job: continuity, insulation resistance, polarity, earth fault loop impedance and RCD operation. Mechanical, plumbing and F-Gas elements delivered by subcontractors are carried out and signed off against the standards relevant to that trade, by engineers holding the appropriate registration for that work. ### Typical situations This supporting service tends to come up on larger renovations or fit-outs, where mechanical and electrical works happen close together: for example a plant room, a kitchen extension, or a commercial unit being refitted. It's less relevant to small, electrical-only jobs, which are quoted and run as standard electrical work. On domestic jobs, this might mean coordinating a boiler or heating-adjacent task with new circuits. On commercial jobs, it might mean coordinating plant-related works with a wider electrical installation such as an LV panel board. ### Residential versus commercial On residential projects, mechanical and associated works are usually a smaller, defined part of a bigger electrical or renovation job. On commercial and industrial sites, mechanical works can be a larger and more technical part of the overall project, with more subcontractor coordination required and a site visit needed before anything is quoted. ### Related services - Electrical in Stevenage - Commercial Electrical Work in Stevenage - Air Con in Stevenage - All Types of Electrical Work in Stevenage - All electrical & mechanical services ### Areas we cover All of Hertfordshire, Bedfordshire, Cambridgeshire and London, including: - Electrician in Stevenage - Electrician in Hitchin - Electrician in Welwyn Garden City - Electrician in Hertford - Electrician in St Albans - Electrician in London - Linehan Electrical home Questions ## Frequently asked questions ### Do you carry out gas or F-Gas work yourselves? +No. Gas Safe and F-Gas registered work is carried out by registered subcontractors, not directly by Linehan. This is managed as part of the wider project. ### What mechanical work do you do in-house? +Mechanical, plumbing and associated works are offered as a supporting service alongside electrical projects. The exact in-house scope is best confirmed for your specific job when you call. ### How much does mechanical work cost? +There's no fixed 'from' price for mechanical works: every job is quoted individually based on scope, after a free site visit for larger projects. ### Do you offer free quotes for mixed-scope projects? +Yes, quotes are free. Larger mixed mechanical and electrical projects need a site visit to scope properly. ### How long does a mechanical and electrical project take? +This depends entirely on scope. It's assessed and agreed during the quote stage before work starts. ### Is the work guaranteed? +Linehan's own workmanship is guaranteed for 12 months. Subcontracted mechanical, plumbing or F-Gas work carries the terms of the subcontractor carrying it out. ### Can I call out of hours? +The phone line is answered 24 hours a day, so you can call any time to discuss a project. No specific attendance time is promised. ### Do you cover Stevenage and the wider Hertfordshire area? +Yes, projects are coordinated across Stevenage, Hertfordshire, Bedfordshire, Cambridgeshire and London. ### How do I pay? +Payment can be made by whatever method suits you, with terms of 14 days from completion. Larger jobs require a 10% deposit. ### Should I book mechanical and electrical work separately? +Not if the two are related on the same project: coordinating them together through one point of contact reduces clashes and repeat site visits. ## Get a free quote for your project Tell us about the mechanical, plumbing and electrical scope of your job and get a free, no-obligation quote. Call Gary any time on +44 7868 255993. Get My Free Quote07868 255993 - NICEIC Approved Contractor - 12-month workmanship guarantee - 4.95 on TrustATrader NICEIC Approved Contractor. £10m public and employers' liability insurance. Covering all of Hertfordshire, Bedfordshire, Cambridgeshire and London. ### Services - Electrical - Installations & Repairs - Testing - Mechanical - Air Con ### Hours - Monday – Friday: 8am – 6pm - Saturday: 9am – 12:30pm - Sunday: Closed - Phone line answered 24 hours ### Contact 07868 255993gary@linehanelectrical.comRegistered office: The Loft, Hill End Farm, Langley, Hertfordshire SG4 7PT Company no. 09344264 Facebook © 2026 Linehan Mechanical and Electrical Ltd · Privacy policy · Terms & conditions · Cookie policy Call GaryFree Quote