Heating & ventilation contractors in Wales

301 heating & ventilation contractors across Wales.

• F Floodlighting and Electrical Services Ltd Pontyclun · Electrical · 10-49 employees

  Floodlighting and Electrical Services Ltd: Established since 1979, we install and maintain permanent and temporary floodlighting and lighting solution

• F Flow N Flame Ltd Cwmbran · Plumbing

  Family-run plumbing and heating engineers covering Torfaen and South Wales. Gas Safe registered, same-day call-outs, 10-year boiler warranties.

• F FOX AIR CONDITIONING & RENEWABLES LTD Cardiff · Air conditioning

  Fox Air Conditioning & Renewables: Supply, install, and service premium air conditioning systems and renewable energy solutions for homes and business

• F Full Power Installations Ltd Swansea · Heating & ventilation

  Trusted experts in heating and renewables, specialising in the design and installation of heating and renewable energy systems for homes.

• F Futurite Ltd Newport · Design & build · 1-9 employees

  Futurite are a family-run business established in 2003, based in Newport, South Wales, providing nationwide coverage for shopfitting, refurbishments,

• G G Oakley Cowbridge · Main contractor · 10-49 employees

  G Oakley & Sons Ltd, established in 1954, offers comprehensive construction, M&E, and joinery services across the UK and Ireland, specializing in new

• G Garmik Gas Swansea · Heating & ventilation

  Garmik Gas Services is a local company offering bespoke gas, plumbing, and heating services. They pride themselves on being approachable and honest, p

• G Gas Gold Caerphilly · Plumbing

  Gas Gold provides 24/7 domestic and commercial heating and plumbing services in Caerphilly and South Wales. Established in 2008, they offer installati

• G Gas Services Wales Swansea · Heating & ventilation

  Gas Services Wales offers cost-effective, reliable heating and plumbing services for domestic customers. Specialising in boiler installation, servicin

• G Ggt. Thomas & Son Ltd Haverfordwest · Heating & ventilation · 10-49 employees

  GGT Thomas & Son Ltd offers commercial, industrial, and domestic central heating and plumbing services across West Wales, specialising in installation

• G Glowtech Heating & Plumbing Ltd Cardiff · Heating & ventilation

  Local heating, plumbing & renewables specialists in South Wales, specialising in Boiler Repair & Installation. Reliable, trustworthy, and affordable s

• G Grc Plumbing And Heating (Cardiff) Ltd Cardiff · Plumbing

  GRC Plumbing & Heating offers expert plumbing, heating, and boiler services for homes and businesses in Radyr and surrounding areas. Specialising in i

• G Green Dragon Heating Neath · Heating & ventilation

  Trusted heating engineers and plumbing services in South Wales. Specialising in boiler installations, servicing, repairs, and full bathroom projects f

• G Green Dragon Plumbing & Heating Llandudno · Plumbing · 1-9 employees

  Green Dragon Plumbing & Heating offers expert plumbing and heating services in Llandudno and surrounding areas. Specialising in maintenance and repair

• G Green Knight Caravan Services Mochdre · Heating & ventilation

  Green Knight Caravan Services specialises in eco-friendly antifreeze and water protection systems for caravans and lodges, saving park owners stress,

• G Green Scene Group Ltd Wrexham · Heating & ventilation · 1-9 employees

  MCS-certified air source heat pump installation in Wrexham & Surrounding Areas. Over 20 years of experience, 100+ satisfied clients. Get a free quote

• G Green Warmth Ltd Haverfordwest · Heating & ventilation

  Wales' longest-serving MCS accredited installer of renewable heating, heat pumps, solar PV, and battery storage solutions since 2007.

• G Greenlands Energy Tredegar · Heating & ventilation · 10-49 employees

  Greenlands Energy: Leading the way in sustainable energy solutions. Discover our innovative approaches to solar, wind, and geothermal energy that powe

• G Groves Gas Ltd Cwmbran · Heating & ventilation

  Groves Gas is a family-centred business founded in 2006, aiming to be the leading independent gas, plumbing, and heating business in Wales. We pride o

• G Gwresogi Ltd Pwllheli · Heating & ventilation

  Renewable Heating, Plumbing & Solar Done Right. Featured By MCS See how Gwresogi is helping drive Wales' green energy transition At Gwresogi, we speci

• G Gwynt360 Ltd Cardiff · M&E contracting

  Gwynt360 offers full-circle solutions for wind turbine performance, from blade repairs to advanced enhancements, increasing efficiency and protecting

• H H.D Heating Cardigan · Heating & ventilation

  HD Heating: trusted specialists in heating, renewable energy solutions, and plumbing services across Ceredigion, Pembrokeshire & Carmarthenshire.

• H H.Marshall Plumbing And Heating Services Ltd Barry · Plumbing

  H. Marshall Plumbing and Heating Services offers professional and reliable plumbing and heating services in Cardiff and the Vale of Glamorgan.

• H Hale Heating and Renewables Swansea · Heating & ventilation · 1-9 employees

  Hale Heating and Renewables offers expert plumbing, heating, and solar PV solutions for domestic and commercial clients across the UK.

• H Hale Heating And Renewables Ltd Swansea · Plumbing

  Hale Heating And Renewables Ltd is a plumbing company based in Swansea, registered at Companies House in 2025.

• H Harvey T Ross LTD Newport · Plumbing

  Expert plumbing, heating, and bathroom installation services in Newport. Gas Safe registered and 5-star rated for boiler repairs, heating, and luxury

• H Haus Garden Rooms Ltd Cardiff · Design & build

  HAUS Garden Rooms designs and builds custom, fully insulated garden rooms in South Wales, offering electrics, heating, and warranties up to 25 years.

• H Heat Pumps Scotland Cardiff · Heating & ventilation · 1-9 employees

  Heat Pumps Scotland provides information and connects users with professional installers for air, ground, and water source heat pump systems, promotin

• H Heat Pumps South Wales LTD Llanelli · Heating & ventilation

  Heat Pumps South Wales LTD offers expert heat pump installation, repair, and maintenance services in Cardiff and surrounding areas. Specialising in en

• H Heat Saving Specialists Llanelli · Heating & ventilation

  Reducing the cost of home energy bills by securing grants for central heating upgrades such as boilers, air source heating, radiators and extra home i

• H HeaterUp Swansea · Heating & ventilation

  Swansea Heating & Gas Specialists - Boiler Upgrades, Central Heating Systems and All Plumbing Services in South Wales. Slash bills with cost-efficient

• H HEATING AND BOILERS (DYFED) LIMITED Newcastle Emlyn · Heating & ventilation · 10-49 employees

  Gas Safe, OFTEC, MCS & HETAS registered heating engineers in Newcastle Emlyn. Boiler installation, servicing & repair across Ceredigion and Carmarthen

• H Heatshine Ltd Cardigan · Plumbing

  Professional, friendly Plumbers and Heating Engineers, specialising in Oil, Gas & Renewable Energy. Speak to one of our engineers for free, friendly a

• H Heatup Floor Ltd Newport · Plumbing · 1-9 employees

  Heatup Floor Ltd is a plumbing company based in Newport, registered at Companies House in 2018.

• H Heatwood Services Ltd Cwmbran · Plumbing

  Reliable Heating Engineer Cwmbran offering expert plumbing, gas, and carpentry services. Local, friendly, and available 24/7 for emergencies.

• H Helix Plumbing & Gas Swansea · Plumbing

  Helix Plumbing & Gas offers expert boiler installation, servicing, and repair in South Wales. Led by Josh Halls, we ensure your home's comfort and saf

• H Highadmit Projects Talbot Green · M&E contracting · 1-9 employees

  Highadmit Projects undertake large, medium and small contracts throughout the UK offering a complete design service in all aspects of Mechanical and E

• H Hybrid Heating & Gas Ltd Bridgend · Heating & ventilation

  Hybrid Heating & Gas Ltd offers expert plumbing, heating, gas, and oil solutions across South Wales and London. Licensed by Gas Safe and OFTEC, we pro

• I I.S.T.L. Engineering Ltd Bedwas · M&E contracting · 10-49 employees

  Established in 1995, ISTL is a full-service mechanical and electrical design and build contractor based in Cardiff.

• I Infinity Plumbing Wales Ltd Pontypridd · Plumbing · 1-9 employees

  Infinity Plumbing Wales Ltd are your trusted South Wales plumbing and heating experts, offering reliable services for homes and businesses. Available

• I INGENSTAT RENEWABLES LIMITED Newport · Solar PV

  Ingenstat Renewables specialises in transforming commercial energy consumption through cutting-edge solar and energy storage technology. We focus on d

• I Inspire Green Ltd Cardiff · Solar PV

  Cardiff-based MCS-certified installer of commercial solar PV, EV charging, battery storage & LED lighting across Wales & the South West. Free site sur

• I Intelligent Electrical NW Wrexham · Electrical · 1-9 employees

  Intelligent Electrical NW is your local Electrical, Smart home & security installers with a passion for technology & customer satisfaction

• I Interlec Systems (Newport) Ltd Newport · Electrical

  Interlec Systems are approved electrical installers for Industrial, Commercial & Domestic clients, providing a comprehensive service since 1995. Deliv

• I Ir Energy Ltd Pant Industrial Estate · Solar PV · 10-49 employees

  Save on bills with solar, heat pumps & EV chargers. IR Energy helps South Wales homes go greener with trusted renewable installations. Grant & finance

• I IVD HEATING Swansea · Heating & ventilation

  IVD Heating offers expert heating and plumbing services in Port Talbot, including boiler replacements, servicing, and repairs. Gas Safe registered wit

• I Ivor Cook Ltd Newport · Heating & ventilation

  Ivor Cook Ltd offers heating, plumbing, and electrical services, including compliance and renewable technologies. Gas Safe Registered and 18th Edition

• J J R Heating Services Ltd Barry · Heating & ventilation · 1-9 employees

  JR Heating Services Ltd is a family-run, Gas Safe registered business based in Barry, serving homeowners and landlords across South Wales. Specialisin

• J J S Bowsher Ltd Barry · Design & build

  J S Bowsher Ltd offers joinery, shopfitting, and building services across the UK, providing turnkey solutions from concept to completion with an empha

• J Jjl Energy Services Ltd Swansea · Heating & ventilation

  Gas Safe registered heating engineers with 30+ years experience. Underfloor heating, boiler installs, and energy solutions across South Wales.