--- title: "Annual Boiler Health Check in Stockport & Greater Manchester | Swainson" description: "Annual boiler health check for warranty compliance, safety and efficiency. Gas Safe #9663, family-run since 1986. From £98 inc. 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Gas Safe #9663, family-run since 1986. From £98 inc. VAT.", "provider": { "@type": "LocalBusiness", "name": "Swainson Gas Services Ltd", "telephone": "07442 536165", "address": { "@type": "PostalAddress", "addressLocality": "Stockport", "addressCountry": "GB" } }, "areaServed": [ "Hazel Grove", "Stockport", "Bramhall", "Cheadle Hulme", "Poynton", "Marple", "High Lane" ], "url": "/services/annual-boiler-health-check" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What's the difference between a health check and a full service?", "acceptedAnswer": { "@type": "Answer", "text": "A health check verifies your boiler is safe, efficient and warranty-compliant. A full service adds a burner and heat exchanger strip-down and clean. Both are useful, which is right depends on the boiler's age and history." } }, { "@type": "Question", "name": "How much is a health check?", "acceptedAnswer": { "@type": "Answer", "text": "From £98 inc. VAT. Landlord CP12 combined on the same visit is priced honestly at the point of booking." } }, { "@type": "Question", "name": "How long does it take?", "acceptedAnswer": { "@type": "Answer", "text": "Typically 40 to 75 minutes for most domestic boilers, depending on the model and what needs doing." } }, { "@type": "Question", "name": "Will this satisfy my Worcester / Vaillant / Ideal warranty?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, a Gas Safe registered annual check with a written record is what all major manufacturers require. Combustion readings are documented on request." } }, { "@type": "Question", "name": "I've just moved in, should I book one?", "acceptedAnswer": { "@type": "Answer", "text": "Almost always yes, especially if the previous owner didn't leave service records. It gives you a clean baseline." } }, { "@type": "Question", "name": "Do you leave a certificate?", "acceptedAnswer": { "@type": "Answer", "text": "You'll get a written service record. A gas safety certificate (CP12) is a separate landlord document, but can be issued on the same visit if you're a landlord." } }, { "@type": "Question", "name": "How soon can you attend?", "acceptedAnswer": { "@type": "Answer", "text": "Same-week bookings are typical. Weekend slots are limited but available in busy months." } }, { "@type": "Question", "name": "What if you find a problem?", "acceptedAnswer": { "@type": "Answer", "text": "We stop, explain, and quote before doing any additional work. No mystery invoices." } } ] } ] --- Based in Stockport [info@swainsongas.co.uk](mailto:info@swainsongas.co.uk)Gas Safe registered #9663 Open 7am – 6pm, 7 days [](https://www.facebook.com/people/Swainson-Gas-Services/61563360904402/)[](https://www.instagram.com/swainsongas/)[](https://x.com/swainsongas) [![Swainson Gas Services](/__l5e/assets-v1/2f3afd23-ed83-4d5d-a90b-6d75c9544dc3/swainson-logo.png)](/) [Home](/) [About](/about) [Services](/services) Our services - [Boiler Servicing & Maintenance](/services/boiler-servicing) - [Boiler Repairs & Breakdowns](/services/boiler-repairs) - [Gas Safety Checks](/services/landlord-gas-safety-check) - [Heating Controls & Radiators](/services/thermostat-heating-controls) - [Other Gas Services](/services/gas-fire-servicing) [Areas](/areas) Areas we cover [Hazel Grove](/areas/hazel-grove)[Stockport](/areas/stockport)[Poynton](/areas/poynton)[Bramhall](/areas/bramhall)[Cheadle Hulme](/areas/cheadle-hulme)[Marple](/areas/marple)[High Lane](/areas/high-lane)[Sale](/areas/sale)[Didsbury](/areas/didsbury)[Offerton](/areas/offerton)[Woodley](/areas/woodley)[Bredbury](/areas/bredbury)[Romiley](/areas/romiley)[Davenport](/areas/davenport)[Heaviley](/areas/heaviley)[Gatley](/areas/gatley)[Cheadle](/areas/cheadle)[Disley](/areas/disley)[Handforth](/areas/handforth)[The Heatons](/areas/the-heatons) [Reviews](/reviews) [Contact](/contact) [Call the engineer 07442 536165 ](tel:+447442536165)[Book in now](/contact) ![Boiler burner assembly cleaned during an annual health check by Swainson Gas Services](/__l5e/assets-v1/cb8bdefe-e670-4bdc-8d1d-acb106e3e60a/swainson-gas-services-boiler-servicing-burner-assembly-after-01.jpg) [Home](/)[Services](/services)Annual Boiler Health Checks Annual Boiler Health Check # Annual Boiler Health Checks in Stockport & Greater Manchester Warranty-Safe. Homeowner-Simple. A yearly health check that satisfies your manufacturer's warranty, confirms your boiler is safe to run, and tells you, in plain English, what condition it's actually in. [Book a service or repair](/contact) [Call 07442 536165](tel:+447442536165) **5.0** Google (36) Gas Safe #9663 Written report · Warranty-compliant · Same-week bookings From £98 inc. VAT Manufacturer-compliant Gas Safe registered #9663 Family-run since 1986 12-month workmanship guarantee What we do ## Annual Boiler Health Checks, done properly. An annual boiler health check is what most manufacturers actually require to keep a warranty valid, and it's what most homeowners genuinely need to know their boiler isn't quietly dying behind the casing. It's less involved than a full strip-down service but more thorough than a five-minute glance, and it's the minimum John recommends for any gas boiler in a domestic property. What it is A health check includes visual inspection of the boiler and flue, gas tightness test at the meter, combustion analysis using a calibrated flue gas analyser, verification of gas pressure and flow, operation of controls and safety devices, and a written record of findings. Who it's for Homeowners keeping a manufacturer warranty valid, anyone selling or buying a property who wants a clean bill of health on the boiler, and every landlord (in which case it's usually paired with a landlord gas safety check). When you need it Annually, on the anniversary of installation, the previous service, or the boiler's manufacturer schedule. Late summer to early autumn is quieter and cheaper than mid-winter. Why it matters It's the cheapest form of insurance against a voided warranty and a January breakdown. Missing a health check is what turns a free-under-warranty repair into a £600 out-of-pocket one. Book a service or repair ### Speak directly to the engineer. from £98 inc. VAT Recent work ## Real jobs, real results. Photographs from recent annual boiler health checks work carried out by John across Stockport and the surrounding areas. ![Boiler heat exchanger heavily sooted before a full service by Swainson Gas Services](/__l5e/assets-v1/fa25bcfa-960f-4fe5-9109-3777dcd2321d/swainson-gas-services-boiler-servicing-heat-exchanger-before-01.jpg) ![Same heat exchanger cleaned and combustion-tested after a full service in Stockport](/__l5e/assets-v1/a0d9a125-d950-4f9c-9d51-2d3f16654c7b/swainson-gas-services-boiler-servicing-heat-exchanger-after-01.jpg) ![Burner assembly fouled with combustion debris before annual service](/__l5e/assets-v1/344d7897-b45d-48a8-bed3-b644422ff42a/swainson-gas-services-boiler-servicing-burner-assembly-before-01.jpg) ![Burner assembly stripped and cleaned by John Swainson after service](/__l5e/assets-v1/cb8bdefe-e670-4bdc-8d1d-acb106e3e60a/swainson-gas-services-boiler-servicing-burner-assembly-after-01.jpg) What happens if it's ignored ## The cost of putting it off. Skipping an annual health check has real, measurable consequences. This is what typically happens. ### Warranty voided Manufacturers ask for annual service records at claim time. No record equals no claim, and boiler electronics aren't cheap. ### Undetected combustion issues A slightly rich burn can produce carbon monoxide and elevated flue gases, invisible without a flue gas analyser. ### Escalating repair costs A £30 part replaced at service is often a £300 part replaced later, because untreated problems damage adjacent components. ### Home sale friction Buyers and surveyors flag boilers with no service history. It slows sales and gives buyers leverage on price. Common mistakes we see - Assuming 'health check' and 'service' are the same job, they aren't; always confirm what's included. - Booking any check that doesn't include a flue gas analyser reading. - Only booking when there's already a problem, that's a repair, not a health check. Our process ## A clear five-step system. No guessing, no meter-running. Every job follows the same repeatable process, that's how the result stays consistent. 1. 01 ### Visual inspection Boiler, flue, condensate route, controls and clearances all inspected against manufacturer requirements. 2. 02 ### Gas tightness test Full tightness test at the meter to confirm no gas leaks anywhere on the supply. 3. 03 ### Combustion analysis Flue gas readings at low and high fire, the definitive test for combustion safety and efficiency. 4. 04 ### Controls & safety Thermostat, timer, safety devices, expansion vessel pre-charge and pressure all verified. 5. 05 ### Written report Signed record for your warranty and records, with a plain-English summary and any recommendations. Why it's worth doing ## What you actually get. ### Warranty compliance Meets nearly every manufacturer's annual service requirement. ### Real evidence, not guesswork Combustion analyser readings are objective, they either meet manufacturer spec or they don't. ### Peace of mind Written confirmation your boiler is safe, efficient, and ready for winter. ### Selling made easier Handing over a written service history makes a boiler a non-issue in a sale. ### Early warning Small issues flagged before they escalate into breakdowns. ### Affordable protection Cheaper than a single call-out, and it might prevent several. In depth ## The detail that matters. A health check is deliberately more efficient than a full strip-down service, designed for well-maintained boilers that need annual verification rather than a full clean. ### Health check vs full service A health check covers all safety- and warranty-critical items but doesn't include a burner strip-down and deep clean. For boilers over five years old or with no recent service history, we recommend upgrading to a full service instead. ### Landlord health checks Landlord gas safety checks (CP12) can be combined with a health check on the same visit, saving both a call-out fee and time. ### Ownership handover Just moved in? A health check inside the first month gives you a clean baseline and a written record for future warranty or sale purposes. ### Documentation Every health check leaves you with a physical or emailed record showing what was checked, the readings, and any recommendations. This is the document manufacturers ask for at warranty claim time. FAQs ## Questions we hear every week. If you have a question that isn't answered here, ring John directly on 07442 536165. ### What's the difference between a health check and a full service? ### How much is a health check? ### How long does it take? ### Will this satisfy my Worcester / Vaillant / Ideal warranty? ### I've just moved in, should I book one? ### Do you leave a certificate? ### How soon can you attend? ### What if you find a problem? Related services ## Often booked together. [All services](/services) [ Boiler Servicing & Maintenance Boiler Servicing Learn more → ](/services/boiler-servicing)[ Boiler Servicing & Maintenance Combi Boiler Servicing Learn more → ](/services/combi-boiler-servicing)[ Gas Safety Checks Landlord Gas Safety Checks (CP12) Learn more → ](/services/landlord-gas-safety-check)[ Gas Safety Checks Homeowner Gas Safety Checks Learn more → ](/services/homeowner-gas-safety-check) ![Swainson Gas Services vehicles ready for calls across Stockport and Hazel Grove](/__l5e/assets-v1/160943dc-12df-4f98-9e74-b100ef4b83cc/swainson-gas-services-service-vehicles-fleet.jpg) Ready when you are ## Warranty due, or just want to know it's safe? Book a health check. Written record, warranty-compliant, and carried out personally by John Swainson. [Book a service or repair](/contact) [07442 536165](tel:+447442536165) Gas Safe #9663 · 12-month workmanship guarantee · Card on the job ![Swainson Gas Services](/__l5e/assets-v1/2f3afd23-ed83-4d5d-a90b-6d75c9544dc3/swainson-logo.png) Swainson Gas Services Family run · Est. 1986 Stockport's trusted boiler repair, servicing and gas safety specialists. Nearly 40 years on the tools, one engineer, one standard. Gas Safe Registered Registration No. 9663 Services - [Boiler Repairs](/services/boiler-repairs) - [Boiler Servicing](/services/boiler-servicing) - [Landlord Gas Safety Check](/services/landlord-gas-safety-check) - [Emergency Boiler Callouts](/services/emergency-boiler-callouts) - [Central Heating Maintenance](/services/central-heating-maintenance-contract) Areas covered - [Hazel Grove](/areas/hazel-grove) - [Stockport](/areas/stockport) - [Poynton](/areas/poynton) - [Bramhall](/areas/bramhall) - [Cheadle Hulme](/areas/cheadle-hulme) - [Marple](/areas/marple) - [High Lane](/areas/high-lane) - [Sale](/areas/sale) - [Didsbury](/areas/didsbury) - [Offerton](/areas/offerton) - [Woodley](/areas/woodley) - [Bredbury](/areas/bredbury) - [Romiley](/areas/romiley) - [Davenport](/areas/davenport) - [Heaviley](/areas/heaviley) - [Gatley](/areas/gatley) - [Cheadle](/areas/cheadle) - [Disley](/areas/disley) - [Handforth](/areas/handforth) - [The Heatons](/areas/the-heatons) [See all areas & services →](/areas-we-cover) Contact - [07442 536165](tel:+447442536165) - [info@swainsongas.co.uk](mailto:info@swainsongas.co.uk) - Based in Stockport - 7 days a week, 7 AM – 6 PM [](https://www.facebook.com/people/Swainson-Gas-Services/61563360904402/)[](https://www.instagram.com/swainsongas/)[](https://x.com/swainsongas) © 2026 Swainson Gas Services Ltd. 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