Heating & ventilation subcontractors in the UK

7637 UK subcontractors offering heating & ventilation work.

• O On Demand Plumbing & Heating Ltd Watford · Plumbing

  24/7 plumbing, heating & boiler specialists across Hertfordshire and all London boroughs. Transparent pricing, certified engineers.

• O ON HOME LTD Swineshead · Electrical

  On home ltd, Boston. All your electrical and heating/plumbing needs in one place. All aspects of install, services & repairs.

• O ON POINT PLUMBING London · Plumbing

  Trusted local plumbing and heating experts in Ealing and West London. Qualified, experienced, and insured for all your plumbing and heating needs, inc

• O On Tap Heating Ltd Derby · Plumbing

  Experienced plumbing, heating & electrical services in Derby. We handle everything from small projects to larger ones, offering quality and affordable

• O On Tap Helmdon Ltd Kettering · Plumbing

  On Tap Helmdon Ltd offers expert plumbing and heating services in Northamptonshire, specialising in LPG and oil systems. With over 20 years of experie

• O On Tap Solutions Ltd High Wycombe · Plumbing

  On Tap Solutions are qualified plumbers and gas engineers covering Islington, North London, West London and Buckinghamshire. Specialists in plumbing,

• O ON THE GAS BOILERCARE LIMITED Rochester · Heating & ventilation

  Trusted local heating experts in Medway providing honest and reliable service. Fast boiler repairs, servicing, and new installations to keep your heat

• O ON TIME HEATING SERVICES LTD Birmingham · Heating & ventilation

  ON TIME HEATING SERVICES LTD: Experts in boiler repairs, servicing, and installs in Birmingham and surrounding areas. Gas Safe certified for all gas a

• O Oncore Specialist Heating Ltd Bowness On Windermere · Heating & ventilation

  Oncore Specialist Heating is a heating industry professional specialising in the repair, maintenance and installation of heating systems for domestic

• O ONE | Plumbing & Heating Tranent · Plumbing

  ONE | Plumbing & Heating is a family-run business offering trusted, high-quality plumbing and heating services. With over 23 years of experience, we p

• O ONE CALL GAS SERVICES LIMITED Sandwich · Heating & ventilation

  One Call Gas Services offers expert heating and plumbing services in Kent, including boiler repairs, installations, and Gas Safe certificates. Call 01

• O ONE CALL HVAC LTD London · Heating & ventilation

  Trusted local HVAC installation, repair, and maintenance services across all 32 London boroughs. Licensed, insured engineers with upfront pricing and

• O One Click Centre Limited London · Bathroom fitting · 1-9 employees

  Expert bathroom fitters offering seamless renovation services including showers, plumbing, electricity, underfloor heating, wallpapering, painting, an

• O One Electrical Services (N.I.) Ltd Belfast · Electrical

  One Electrical Services is a Belfast-based company providing a first-class electrical, plumbing, and heating service for homes and businesses across N

• O One Environmental Ltd Witham · M&E contracting · 10-49 employees

  ONE Environmental Ltd provides compliance and mechanical services including PPM, reactive, and project works across various market sectors. They focus

• O One Mep Ltd Bedford · M&E contracting · 10-49 employees

  ONE MEP is a professional and reliable MEP contractor offering value, quality, and practical solutions for improving the built environment. Vision to

• O One Stop Electrical Gas Solutions Ltd Coventry · Electrical

  Need an Electrician or Gas Engineer in Coventry? One Stop Electrical Gas Solutions Ltd offers boiler repairs, EICRs, rewires, fault finding, and EV ch

• O Onecall Solutions Ltd Surrey · Kitchen fitting

  Friendly home improvement company in Surrey & London. Services include kitchens, bathrooms, plumbing, electrical, carpentry, tiling, flooring, and dec

• O Oneheat Ltd Barnsley · Heating & ventilation

  South Yorkshire's trusted heating, boiler & air conditioning specialists. Gas Safe-registered engineers delivering boiler installations, servicing, ra

• O OneProtect London · Heating & ventilation

  OneProtect offers boiler, central heating, and plumbing cover plans for homeowners and landlords, providing 24/7 support and specialist engineers for

• O OneServ Ltd Goole · Plumbing

  Need a reliable local Plumbing, Heating & Boiler company in Yorkshire? OneServ is a one-stop shop for all your Plumbing, Heating & Boiler needs.

• O Onflo Plumbing & Heating Services Spennymoor · Plumbing

  Onflo is a family-run plumbing and heating company offering boiler installations, servicing, repairs, and full bathroom renovations across County Durh

• O Onkar Builders Slough · Main contractor

  Onkar Builders Ltd offers quality building, renovation, electrical, and heating/AC services across London and surrounding counties. Satisfaction guara

• O Only Living Ltd St. Leonards-On-Sea · Plumbing

  Friendly, local, and trusted plumbing and heating experts offering bathroom upgrades, boiler servicing, emergency repairs, and general plumbing servic

• O ONLYHEATING.COM Altens · Heating & ventilation · 10-49 employees

  ONLYHEATING.COM Ltd offers central heating, gas services & plumbing in Aberdeen, Inverurie & Stonehaven. Authorised & regulated by the FCA.

• O Ontime Contractors Ltd Nottingham · Main contractor · 1-9 employees

  Ontime Contractors Limited is a construction company operating across the UK, offering a wide range of services from new builds to renovations. They f

• O ONTIME ECO ENERGY SOLUTIONS LTD Manchester · Heating & ventilation

  Ontime energy solutions is a reputable engineering company providing comprehensive services to residential clients. With expertise in heating, cooling

• O Ontime Heating And Plumbing Ltd Birmingham · Plumbing · 1-9 employees

  Ontime Heating and Plumbing Ltd offers expert plumbing and heating services across Birmingham and the West Midlands. We handle everything from boiler

• O OnTime Plumbers Hainault · Plumbing

  OnTime Plumbers is a trusted London-based plumbing company offering 24/7 emergency services. Established in 2012, we provide fast, reliable, and affor

• O Ontop Electrical Ltd Nottingham · Electrical

  Ontop Electrical provides high-end bespoke electrical solutions for private, commercial and industrial clients across Nottinghamshire, Derbyshire and

• O Onyx Plumbing Brentwood · Plumbing

  Onyx Plumbing Ltd offers Gas Safe registered plumbing, boiler, and heating services in South Essex. Established in 2009, they focus on quality workman

• O Onyx Solutions Ipswich · M&E contracting

  Onyx Solutions Ltd is a trusted provider of building and facilities services, delivering high-quality solutions across the region. Part of the EPPH Gr

• O Opal Access Group Newcastle Upon Tyne · Rail infrastructure · 1-9 employees

  Opal Access Limited delivers facilities management, maintenance, rope access, commercial cleaning, security, workwear, rail and renewables services ac

• O Opal Energy Ltd Oldham · Insulation

  Opal Energy provides government-funded energy-efficient home improvements, making homes warmer and greener. Specialising in insulation and heating con

• O Opalux Group Ltd Gloucester · Electrical

  Opalux Group provides expert electrical, mechanical and construction services across Gloucestershire and The Cotswolds.

• O OPTAMA LTD Glasgow · Solar PV · 10-49 employees

  Optama Renewables is a leading renewable energy company in Scotland, specialising in sustainable heating and energy solutions like solar PV, heat pump

• O Optimal Cooling Manchester · Air conditioning

  Expert air conditioning installation and repair services for homes and businesses across Greater Manchester. We offer efficient, bespoke cooling and h

• O Optimal Energy Solutions Ltd Grays · Solar PV

  Optimal Energy Solutions specialises in designing and installing solar PV systems, solar battery storage, air source heat pumps, and EV charging solut

• O Optimal Heating & Cooling London · Heating & ventilation · 1-9 employees

  Gas, heating & air conditioning engineers for homes and businesses across the West Midlands & nationwide. Installations, servicing, repairs.

• O Optimal Interiors Maidstone · Refurbishment

  Optimal Interiors Limited offers professional home refurbishment services including kitchens, bathrooms, tiling, plastering, and underfloor heating ac

• O Optimal Mechanics Solutions Ltd Esher · Plumbing

  Professional plumbing and air conditioning services with over 15 years of commercial construction experience. Quality installations and health standar

• O Optimal Property Maintenance London · Refurbishment · 1-9 employees

  Optimal Property Maintenance offers a comprehensive range of property maintenance services, including refurbishment, painting, roofing, electrical, an

• O OPTIMAL RENEWABLES LIMITED Stirling · Heating & ventilation

  Expert heat pump installers in Central Scotland, specialising in air source and ground source heat pumps for homes and businesses. MCS-certified profe

• O Optimum Hvac Ltd St. Leonards-On-Sea · Heating & ventilation

  Plumbing, Heating & Cooling in East Sussex, from Optimum HVAC, backed by 120+ Google Reviews. Booked properly. Turned up on time.

• O Optimum Plumbing & Heating Ltd Peterborough · Plumbing

  Optimum Plumbing and Heating Ltd is a family-run business in Peterborough with over 20 years of experience, offering value for money services.

• O Optimus Facilities Ltd Liverpool · M&E contracting

  Optimus Facilities: Your Building Services & Engineering Partner. Specialising in mechanical & electrical systems design and installation across the N

• O Opus Building Services Ltd Boldon · M&E contracting · 50-249 employees

  OPUS Building Services Ltd is a leading contractor of mechanical, electrical and building services across a wide range of sectors throughout the UK. F

• O Opus Plumbing And Heating Ltd Chesterfield · Plumbing

  OPUS Plumbing & Heating offers the highest quality plumbing and heating services through our specialist, reliable tradespeople and staff.

• O ORB MECHANICAL & ELECTRICAL LTD Bristol · M&E contracting

  Leading M&E contractors in Bristol. NICEIC accredited electrical installations, mechanical services, and M&E design for commercial and residential pro

• O Orbel Services Ltd Basingstoke · Heating & ventilation

  Orbel Services Ltd offers reliable and efficient heating and plumbing services in Basingstoke and Four Marks. Established in 1986, we pride ourselves