Plumbing & Heating Companies in Glasgow: 457 Active Firms (2026)
Plumbing and heating companies in Glasgow install, repair and maintain water, gas and heating systems across homes, sites and commercial premises.
Buying centres in Glasgow sit with facilities managers, housing providers, principal contractors and public-sector estates teams rather than purely domestic customers. The more relevant operators blend planned maintenance, emergency call-outs and project installation, so sales cycles often involve tendering, compliance checks and evidence of field capacity. Engagements tend to be large enough to require engineers, schedulers and contract managers, but still local enough for response times, fleet coverage and repeat site knowledge to matter. Recurring maintenance gives some revenue visibility; construction and retrofit packages add more lumpy project work.
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Glasgow has 457 actively trading plumbing and heating companies, a market that looks fragmented once sole-trader and small-contracting activity is separated from larger mechanical contractors. Reported employment across the cohort is 1,847 people, and every headcount-reporting firm records staff, with 118 of 118 reporting at least one employee. Only 12 sit above £5M turnover, so material operating scale is scarce relative to the overall count; 126 were incorporated since 2022, pointing to a continuing flow of newer contractors entering local building-services work.
Gas, boiler and ventilation work sits inside a permissioned contracting environment, so buyers tend to ask for evidence of competence, insurance, safe working practices and service history before awarding recurring work. Public-sector buildings and housing estates add procurement discipline: framework participation, response-time commitments, out-of-hours coverage and auditable maintenance records often matter as much as installation price. Market structure is therefore bifurcated. Small local operators can cover domestic repair and landlord work, while multi-site contracts usually favour contractors with scheduling capacity, documented compliance processes and enough engineers to keep routine servicing separate from reactive jobs.
Maintenance-led contractors appear better placed than pure project installers because boiler servicing, leaks, landlord work and public-estate maintenance create repeat demand even when construction work softens. The cohort still looks weighted towards smaller operators, which may keep acquisition interest focused on businesses with contract managers, engineer utilisation control and documented compliance routines. Larger buyers tend to prefer fewer suppliers, but emergency response remains local, so consolidation is likely to be patchy rather than uniform. Cost pressure around labour, vehicles and parts may also push more firms towards planned-service contracts where scheduling risk is easier to manage.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
457
Active firms
2026
12
Above £5M
Reported revenue
126
Newer incorporations
Since 2022
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Key facts
About 2% of the trading cohort reports turnover above £5M (12 of 457 firms) — the rest sits below that revenue band.
27% of the cohort was incorporated since 2022 (126 firms), so a sizeable share is in its first few filing cycles.
Glasgow plumbing and heating firms install, repair and maintain water, gas and heating systems across homes, building sites and commercial premises.
Demand is closely tied to property uptime, because leaks, boilers, pipework and heating failures create immediate operational issues for landlords, developers, facilities managers and householders.
Contract-led operators tend to serve sites and premises, while smaller repair-and-installation businesses focus on local customers.
The larger end of the market includes domestic service businesses, commercial maintenance contractors and site-based mechanical-services firms.
Top Glasgow Plumbing & Heating companies
Financial sub-scores
Computed from 2 filingsDesigns, installs and maintains building mechanical services including heating, air conditioning, ventilation and water systems. Provides boiler, heat pump and pipework installation, air handling and…
Serves businesses and public-sector organisations across Scotland, including healthcare, education, commercial offices, industrial plants and data centres, typically building owners, facilities…
Financial Health
StrongStrong
Location
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Financial sub-scores
Computed from 5 filingsProvides building services maintenance and repair for commercial and industrial facilities, including air conditioning, refrigeration, electrical, plumbing, ventilation and gas systems. Offers…
Serves commercial, industrial and retail organisations, public sector bodies such as NHS Scotland and the Ministry of Defence, and domestic customers across Scotland’s central belt.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides facilities maintenance services for commercial buildings, including mechanical and electrical maintenance, HVAC servicing, water hygiene monitoring, gas appliance maintenance, fire and…
Serves businesses and organisations across Scotland that manage commercial buildings and multiple sites, including facilities and property managers needing planned maintenance, reactive repair and…
Financial Health
WeakWeak · -17% CAGR over 4y
Location
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Computed from 4 filingsProvides building engineering services for commercial and industrial projects, including installation and maintenance of heating, ventilation and air conditioning (HVAC), plumbing and electrical…
Serves B2B customers responsible for commercial and industrial buildings or projects, including facilities/property managers and organisations needing premises maintenance, small works, upgrades or…
Financial Health
StableStable · 0% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsProvides design, installation and maintenance of heating and plumbing systems for commercial and residential properties. Services include gas boiler installation, ventilation and air conditioning…
Serves commercial and domestic clients, including social and private housing providers, across Scotland’s central belt and other stated areas from the Borders and Aberdeen to Newcastle.
Financial Health
StableStable
Location
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Provides mechanical and electrical engineering and construction services, acting as a principal contractor on refurbishment, conservation, and building upgrade projects. Delivers systems including…
Serves public and private sector organisations across Scotland, including universities, local-authority leisure facilities, hotels and heritage or estate owners with building projects.
Location
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Financial sub-scores
Computed from 5 filingsProvides housing maintenance and construction services for social and affordable housing providers, including planned and reactive repairs, property renovations, electrical and heating installation,…
Sells to affordable housing providers in Scotland, especially housing associations and social landlords. Serves organisations needing maintenance, compliance, repairs, renovations and home…
Financial Health
DistressedDistressed
Location
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Financial sub-scores
Computed from 3 filingsProvides mechanical building services engineering and contracting for construction projects. Delivers design-and-build and client-led installations, offering subcontract mechanical services and…
Serves public and private sector end-user clients, building owners, and main contractors in the construction industry, with project customers across Scotland and Northern England.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Financial sub-scores
Computed from 4 filingsProvides plumbing, gas and heating, electrical, and property maintenance services including repairs, installations, and inspections. Works on bathrooms, heating systems, and electrical installations,…
Serves property management companies, letting agents, housing associations, private landlords and homeowners across the Glasgow area, Central Belt and, through expansion, Scotland’s east coast.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 3y
Location
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Designs, supplies, installs and maintains commercial renewable heating systems, specialising in air‑to‑water heat pumps. Provides site assessment, system specification, commissioning, diagnostics and…
Serves businesses and public sector organisations across Scotland, including retail outlets, shopping centres, offices, hotels, hospitality venues, server rooms and data centres, as well as…
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 2 filingsProvides property repairs, maintenance and facilities services for social housing managed by Govan Housing Association. Carries out reactive and void property repairs, planned and cyclical…
Serves housing association tenants and customers, primarily through maintenance and repair services for social housing. Also sells facilities and planned maintenance support to Govan Housing…
Financial Health
StableStable · -11% CAGR over 1y
Location
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Financial sub-scores
Computed from 4 filingsDesigns, supplies and installs mechanical, electrical and plumbing systems for commercial, retail and industrial buildings. Provides renewable energy installations such as biomass, CHP and solar PV,…
Serves business clients in the commercial, retail and industrial sectors across the UK, particularly organisations commissioning large-scale M&E projects and related site works.
Financial Health
StableStable · -8% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides domestic and commercial plumbing, heating and electrical services, including boiler servicing and installation, central heating systems, bathroom fitting, underfloor heating, commercial…
Serves homeowners and commercial organisations across the UK, including businesses seeking domestic-style maintenance, commercial plant room projects, pipework, heating, ventilation and electrical…
Financial Health
StableStable
Location
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Financial sub-scores
Computed from 5 filingsProvides mechanical and electrical contracting services for building projects, including design, installation and project management of heating systems, mechanical ventilation and electrical…
Serves commercial property clients, main contractors and organisations commissioning complex projects, including hospitality venues, care homes, supported-living providers and renewable energy…
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
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Computed from 3 filingsDesigns and installs renewable heating systems for domestic and commercial buildings, including ground source and air source heat pumps, biomass systems and underfloor heating. Also provides system…
Serves domestic homeowners and commercial clients in Scotland with renewable heating requirements for residential and commercial properties.
Financial Health
WeakWeak · -11% CAGR over 2y
Location
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Computed from 5 filingsProvides building maintenance and refurbishment services for commercial, industrial and social housing properties. Delivers reactive and planned preventative maintenance and project works including…
Serves commercial and industrial property owners, facilities managers and social housing providers across Scotland, including businesses and organisations with managed property portfolios.
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsProvides plumbing and heating installation, maintenance and repair services for commercial and domestic properties, including gas boilers, central heating systems, oil burners, radiant tube and warm…
Serves commercial and domestic customers in Scotland’s Central Belt, Highlands and Islands, including homeowners, restaurants, hotels and mechanical services firms needing plumbing and heating…
Financial Health
StrongStrong · Hiring · 20% CAGR over 5y
Location
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Computed from 5 filingsProvides industrial engineering services including design, fabrication and installation of pipework and steam systems, along with maintenance and repair. Also offers temporary boiler hire and…
Serves B2B customers in commercial and industrial sectors, especially process industries such as food and drink, pharmaceuticals, chemicals and distilling that rely on steam, heating and pipework…
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 6y
Location
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Computed from 3 filingsDesigns, manufactures and maintains temperature control and ventilation systems, including air conditioning, heat recovery ventilation, fume and dust extraction, evaporative cooling equipment, and…
Financial Health
DistressedDistressed · -12% CAGR over 2y
Location
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Computed from 3 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides heating and plumbing services for domestic and commercial properties, including boiler installation and servicing, central heating systems, pipework and drainage, bathroom and shower…
Serves domestic homeowners and commercial organisations across Scotland’s central belt, including owners or managers of homes, business premises and other non-domestic properties.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
StableStable · -20% CAGR over 3y
Location
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Computed from 4 filingsProvides domestic and commercial plumbing services including installation, maintenance and repair of plumbing and heating systems, bathroom renovations, cast iron pipework for listed buildings, and…
Sells to both homeowners and business customers needing plumbing and heating services, including house renovators, commercial site operators, and clients managing listed buildings requiring cast iron…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 3y
Location
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Computed from 3 filingsProvides building refurbishment, minor works, fire protection installation, and maintenance services for commercial and public sector properties. Employs in‑house trades including carpentry,…
Serves business and public-sector property teams across the UK, including retail, healthcare, hospitality, transport, commercial, education and local government organisations.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
WeakWeak
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
StrongStrong
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Computed from 2 filingsFinancial Health
StableStable · 0% CAGR over 1y
Location
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Financial Health
N/AN/A
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Computed from 5 filingsFinancial Health
StableStable
Location
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Computed from 3 filingsProvides plumbing, heating and electrical services for domestic and commercial properties, including boiler installation and servicing, gas work, tiling, joinery, and general repairs and maintenance.
Serves domestic households and commercial organisations seeking plumbing, heating, electrical, gas, tiling, joinery and boiler support.
Financial Health
WeakWeak · Hiring · 27% CAGR over 2y
Location
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Computed from 4 filingsProvides plumbing, gas and heating services, including boiler installation and repair, heating system maintenance, bathroom installations, and general plumbing work. Serves residential and commercial…
Serves homeowners, residential landlords, letting agents and commercial property managers seeking plumbing, heating, boiler and bathroom support.
Financial Health
StableStable · Hiring · 5% CAGR over 3y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy
Location
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Computed from 3 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
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Computed from 3 filingsProvides plumbing, central heating, drainage and electrical services for domestic and commercial properties, including installation, maintenance, repairs and emergency call-outs. Also undertakes…
Serves homeowners, small to large commercial clients, housing associations, local authorities, blue chip companies and public sector organisations in Glasgow, Edinburgh and Scotland’s Central Belt.
Financial Health
StrongStrong · Growing, Hiring · 347% CAGR over 2y
Location
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Computed from 3 filingsProvides commercial plumbing and mechanical contracting services, including installation of heating, ventilation and air conditioning systems, above‑ground drainage, water services and sanitary ware…
Sells to businesses and organisations needing commercial plumbing and mechanical installations, especially in healthcare, education, hotels, student accommodation, retail, office developments and…
Financial Health
StableStable · 4% CAGR over 2y
Location
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Computed from 5 filingsProvides mechanical and electrical building services including design, installation and maintenance of plumbing, drainage, HVAC, gas and electrical systems. Works on commercial and institutional…
Serves commercial and institutional property clients, including retail sites, office buildings, leisure premises, schools, universities, hospitals and health centres, with some services also aimed at…
Financial Health
WeakWeak · -10% CAGR over 4y
Location
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Computed from 3 filingsProvides plumbing, heating, electrical and drainage services for domestic and commercial properties, including installation, maintenance and emergency repairs. Also undertakes bathroom installation,…
Serves homeowners, commercial clients of all sizes, housing associations, local authorities, blue-chip companies and public sector organisations in Glasgow, Edinburgh and Scotland’s Central Belt.
Financial Health
DistressedDistressed · -21% CAGR over 2y
Location
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Computed from 3 filingsProvides plumbing and heating services including installation, repair and maintenance of central heating systems, bathrooms and gas appliances. Also offers drainage clearance, electrical…
Serves homeowners, commercial organisations of all sizes, housing associations, local authorities and public sector bodies across Glasgow, Edinburgh and Scotland’s Central Belt.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides contract plumbing and heating services for construction projects, primarily delivering full plumbing and heating installation packages for new-build social housing developments, including…
Serves main contractors in the construction sector, primarily those delivering new-build social housing projects in central Scotland.
Financial Health
HealthyHealthy · -2% CAGR over 4y
Location
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Computed from 5 filingsProvides commercial heating and ventilation services including boiler installation and maintenance, heat pump installation, mechanical design, pump installation and repair, pipework fabrication, and…
Serves commercial clients, local authorities and private-sector property operators across Scotland and the North of England, with some residential customers for heat pump installations.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
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Computed from 3 filingsProvides facilities maintenance and building services including electrical installation, inspection and certification, gas installation and boiler servicing, plumbing works, landlord gas safety…
Serves homeowners, residents, landlords, social housing providers and commercial property owners across the west of Scotland with property maintenance and compliance needs.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides plumbing, heating, ventilation and air conditioning (HVAC) installation and building services for commercial properties, including water supply, drainage and pipework systems, and interior…
Serves commercial property owners, managers and contractors across the UK needing plumbing, heating, ventilation and air-conditioning support for building projects and property operations.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 5y
Location
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Computed from 5 filingsProvides domestic and commercial plumbing, heating and gas engineering services, including pipe repairs, leak fixes, boiler installation and maintenance, central heating work, and bathroom and…
Serves domestic homeowners, councils, police and fire services, and major construction and building contractors needing plumbing, heating and gas support for homes, commercial properties and…
Financial Health
WeakWeak · Hiring · 4% CAGR over 4y
Location
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Computed from 3 filingsProvides building services including plumbing, electrical installation, heating and ventilation (HVAC), renewable energy systems, and facilities management. Delivers installation, maintenance, and…
Serves commercial, industrial and domestic clients, with emphasis on care, hotel and leisure, education, shops and building project clients across Scotland and the wider UK.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
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How Glasgow Plumbing & Heating companies work and how to sell to them
What they do
Revenue usually comes from a mix of labour, parts, planned servicing and project installation. Glasgow plumbing and heating contractors tend to price reactive work through call-out charges, hourly rates and marked-up materials, while maintenance contracts use schedules of rates, fixed monthly fees or agreed service visits. Installation and retrofit work is more project-led, with quotes built around labour allocation, plant, subcontractors, materials and retention risk. The product is not software or hardware alone, but an operational service: qualified engineers, vans, stock, scheduling discipline and paperwork that proves the job was completed safely and on time.
Who they sell to
Typical buyers include facilities managers, property managers, housing providers, construction project teams, quantity surveyors and public-sector estates or procurement staff. Smaller jobs may be won through direct relationships and repeat landlord work; larger packages tend to move through approved supplier lists, framework agreements, tender portals or principal-contractor procurement. Emergency work can be decided quickly when a site is without heat or water, but planned maintenance and installation contracts usually involve site visits, insurance checks, competence evidence, references and price comparison. Decision-makers often care about response coverage, documentation and continuity as much as day rate.
What they buy
Most Glasgow plumbing and heating firms tend to spend on field-service management, job scheduling, mobile engineer workflows, estimating, invoicing, compliance records and customer communications. As operations mature, spend often extends into fleet management, van stock control, parts purchasing, health and safety support, training, recruitment, payroll, accounting and credit control. Contractors with public-sector or housing work may also need bid-writing support, document management, audit preparation and reporting tools that make servicing histories easier to evidence. Marketing spend is usually practical rather than brand-led: local search, referral management, case evidence and sector-specific tender visibility.
Why and how to sell to them
Buying intent tends to appear when a contractor wins a maintenance package, adds engineers, takes on out-of-hours cover, enters a framework, or starts losing margin through missed visits, rework and slow invoicing. Leadership change can also matter, especially when a new operations or finance lead wants better visibility over utilisation, work in progress and cash collection. Sales angles land better when they connect to measurable operating frictions: fewer abandoned appointments, faster proof of service, cleaner handover from scheduler to engineer, tighter van stock control, or less time spent assembling tender and compliance evidence.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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