Winner — Wales Energy Efficiency Awards 2026Boiler Installer & Heating Contractor of the Year
See Our Wales Award
Special Commendation — UK National Energy Efficiency Awards 2026Boiler Installer & Heating Contractor of the Year
View certificate (opens in a new tab)See Our National RecognitionBoiler brands we install
Explore the ranges. We recommend the right boiler for your home following an assessment.
Boiler services for homes in Llantwit Major
Our team combines technical checks with a conversation about comfort, running priorities and future plans. The result is a heating recommendation tailored to the property rather than the postcode alone.
Boiler installation Llantwit Major
Boiler replacement and wider heating upgrades considered together where the existing system needs more than one change.
Boiler repair Llantwit Major
Boiler Diagnostic & Repair£85inc. VAT
Evidence-led repair recommendations for Llantwit Major households, with no unnecessary work added to the scope.
Boiler servicing Llantwit Major
Boiler Servicing£85inc. VAT
Annual boiler care covering safety, condition and performance, with the service outcome recorded for the homeowner.
SwiftHeat UK Group Ltd · Whole-home thinking
Heating, solar & whole-home energy in Llantwit Major.
One improvement or a longer-term plan: our expertise brings heating, electricity generation, storage and hot water into the same conversation. We assess your existing system, comfort, energy use and budget before recommending the next step.
Care for what you have
Gas, oil & LPG heating
Installation, servicing, fault diagnosis and system upgrades across gas, oil and LPG. We assess the appliance, fuel supply, pipework and controls together, with the appropriate specialists identified for the work.
Explore a different heat source
Heat pumps & hybrid heating
Air source heat-pump planning considers room heat loss, radiators, hot water and outdoor space. Where suitable, we can compare a hybrid arrangement combining a heat pump with a compatible boiler and coordinated controls.
Generate, store and use
Solar PV & battery storage
Explore rooftop solar, solar with storage, adding a compatible battery, and maintenance of existing systems. Roof condition, shading, seasonal generation, electricity use and tariffs shape the proposal.
Compare suitable electric heating
Electric boilers
Electric combi, system and suitable heat-only arrangements assessed around the heating circuit, hot-water demand, electrical capacity and running costs. We compare the complete proposal with other suitable heating options.
Match supply to daily life
Cylinders & electric hot water
Hot-water cylinder assessment and replacement, direct electric unvented storage and compact electric heaters. We consider capacity, recovery, mains supply, available space and the requirements of the chosen installation.
Make the system work together
Controls, radiators & underfloor heating
Smart thermostats, TRVs, zoning, radiator upgrades and underfloor heating, with balancing and system cleaning where needed. We check compatibility and heat delivery so improvements suit the way you use your home.
One home. A connected energy plan.SwiftHeat UK Group Ltd · Assess first. Recommend second.
Whole Home Energy Solutions in Llantwit Major.
Bring heating, hot water, solar generation, battery storage and smart controls into one considered plan. We assess how suitable technologies can work together around your property, energy use and budget.
For enquiries around CF61, tell us your full postcode, existing fuel and equipment, and what you want to improve. We can consider suitable combinations or phase the work around your priorities. Availability, responsible installers, relevant certification and aftercare are confirmed in your proposal.
Solar output varies through the year. Batteries have limited capacity, and most homes retain a grid connection. Equipment compatibility, electrical capacity and expected running costs are checked before a combined system is recommended.
Llantwit Major homeowner heating guide
Practical heating guidance for Llantwit Major
Llantwit Major includes stone-built homes, established estates and properties exposed to coastal weather. Solid walls and later extensions can create noticeably different heating needs from room to room.
We compare emitter output with the likely heat loss, inspect external condensate routes and explain where insulation or control changes could improve the final result.
Heating-system assessments and upgrades · Radiator improvements · Heating controls
That local property context is considered alongside the boiler, controls, radiator circuit and hot-water pattern, so the advice for a Llantwit Major home is grounded in evidence rather than a standard package.
Verified SwiftHeat work and customer evidence
These approved photographs show genuine SwiftHeat UK diagnostics and installations. They are representative workmanship examples and are not presented as projects completed in Llantwit Major unless a separate case study below names the town and postcode district.
Approved customer feedback
Experience behind the local service.
These are genuine SwiftHeat UK customer reviews. No location is attributed where the approved source does not provide one.
I had my boiler serviced as well as a gas safety inspection and I was delighted with the service.
Read more
Tristan was excellent at informing me in jargon free language the work that was carried out as well as advice for boiler management going forward. I would highly recommend SwiftHeat.
Tristan successfully completed some works at my son's house so I then requested a new HIVE thermostat quote as our outdated thermostat was faulty.
Read more
Tristan was very polite and extremely efficient with his communications throughout and when then installing a new one for us!
I therefore have no hesitation in recommending him.
Thank you Tristan
Our Work • Installation examples
Explore our completed heating projects
Considering a boiler installation in Llantwit Major? These projects elsewhere in Cardiff & the Vale show examples of our work. Their actual locations are listed below.
A Navien combi upgrade with wireless controls.
A new NCB300 28kW combi with magnetic filtration, a shock arrestor, complimentary thermostat and five-year manufacturer’s warranty.
View the Penarth, South Wales case study →
A considered Baxi combi installation.
A Baxi 800 30kW combi with MagnaClean protection, complimentary wireless controls, ten-year manufacturer’s warranty and twelve-month installation guarantee.
View the Cardiff, South Wales case study →Planning a heating visit in Llantwit Major
Send the full postcode, property type and any parking or access restrictions. The CF61 districts are a guide; we confirm the actual address and appointment availability.
Share the make, model and visible fault code if known, or a photograph taken safely without removing covers. Tell us whether you need servicing, fault diagnosis or an installation survey.
Tell us your current fuel, insulation, hot-water needs, available outdoor space and whether a hot-water cylinder is fitted. We assess room-by-room heat loss, radiator suitability and outdoor-unit siting before recommending a suitable system.
Read the heat-pump assessment guideFull information, one authoritative source
Essential SwiftHeat UK guides for Llantwit Major
These concise summaries point to the central pages where current terms, qualifications and full service details are maintained.
0% options for eligible installations
Eligible boiler installations from SwiftHeat UK Group Ltd may have repayment options of 3 months, 6 months, 9 months or 12 months through Humm Group Limited. 0% finance is subject to eligibility, approval and provider terms. Any applicable deposit, fees, repayment conditions and total payable are explained during your enquiry/application. Review the terms supplied before applying.
Lower-carbon comfort starts with the right design.
A heat pump performs best when the building, heat loss, emitters and hot-water arrangement are considered together. We can discuss the practical checks for properties in Llantwit Major before a proposal is developed with our MCS-certified installation partner. Current Boiler Upgrade Scheme support is subject to the property, technology, MCS and scheme eligibility rules.
The Boiler Upgrade Scheme offers £7,500 towards an eligible air-to-water heat pump in England or Wales. Qualifying homes currently heated by oil or LPG, with no mains-gas connection, may receive an additional £1,500 (£9,000 in total) until March 2027. An MCS-certified installer must confirm eligibility and apply on your behalf; approval is not guaranteed.
Running costs and any savings depend on the property, system design, controls and energy tariff.
Wales’ 2026 heating-contractor winner
SwiftHeat UK won Wales’ Boiler Installer & Heating Contractor of the Year 2026, alongside Highly Commended and Commended honours, and received a Special Commendation in the national Boiler & Heating Installer and Contractor of the Year category.
Cardiff City benefits and Disability Confident
SwiftHeat UK Group Ltd is Disability Confident Committed. Eligible Cardiff City season-ticket holders can also receive 15% off qualifying new boiler installations and boiler servicing under the current published offer terms.
Local heating questions
Boiler and heating FAQs for Llantwit Major
Are homes near St Athan covered by the Llantwit Major heating team?
This page is centred on CF61, with nearby coverage around St Athan, Rhoose, Cowbridge and Barry. Send the full postcode and the service required so SwiftHeat UK can confirm travel and appointment availability before a visit is arranged.
Could controls and radiators matter as much as the boiler in Llantwit Major?
Llantwit Major includes stone-built homes, established estates and properties exposed to coastal weather. Solid walls and later extensions can create noticeably different heating needs from room to room. We compare emitter output with the likely heat loss, inspect external condensate routes and explain where insulation or control changes could improve the final result. Exposed condensate pipework should be correctly sized, insulated and routed to reduce freezing risk during colder weather.
Does a Llantwit Major boiler quotation follow an assessment?
SwiftHeat UK first confirms whether the address is in Llantwit Major or a nearby community such as Barry, then agrees the visit purpose. Repairs begin with structured fault finding, while replacement enquiries move through a property survey so the appliance, controls and supporting work can be specified clearly.
Should I book servicing, diagnostics or an installation survey in Llantwit Major?
Use the service links on this page rather than searching for separate Llantwit Major-only service pages. They lead to SwiftHeat UK's authoritative installation, servicing and repair information, while the enquiry form records the local postcode and property details.
Local service coverage
Serving Llantwit Major and nearby communities
Our Llantwit Major service area is centred on CF61 and includes homes throughout Vale of Glamorgan, with nearby coverage around St Athan, Rhoose, Cowbridge, Barry. If your location is not listed, contact us—SwiftHeat UK works across Wales and throughout the UK.
Browse all Areas We Cover →
Gas Safe registered business978273
- Wales’ Boiler Installer & Heating Contractor of the Year 2026
- Gas, Oil and LPG boiler expertise
- Air source heat-pump assessment and installation
- Domestic & Commercial Heating • Plumbing • Engineering
- Manufacturer warranties from 5–12 years on eligible boilers
- 0% finance options, subject to eligibility and terms
Assess first. Recommend second.
One home.Practical answers without the pressure.
Tell us what is happening at your Llantwit Major property and what outcome you want. Mention the boiler, controls or rooms affected; our team will review the detail and contact you with a sensible next step for your home in Vale of Glamorgan.
- 1Send a few details about your boiler, heating system or project.
- 2A member of the SwiftHeat UK team will contact you using your preferred method.
- 3Receive considered advice and a clear quotation for your Llantwit Major property.