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Plumbing & Heating Companies in Portsmouth: 355 Active Firms (2026)
Plumbing and heating companies install, repair and maintain pipework, boilers and heating systems across Portsmouth and its wider metropolitan area.
Buying tends to sit with estates managers, landlords, managing agents and facilities teams rather than central procurement, with household work sitting alongside commercial maintenance contracts. Portsmouth-area contractors in this list skew towards small and mid-market operators with enough engineer capacity to handle recurring servicing, quoted works and reactive callouts. Engagements are usually local, operational and compliance-led: planned boiler servicing, heating controls work, pipework repairs and emergency response across mixed-property portfolios. The better-fit suppliers therefore need dispatch discipline, evidence capture, quote control and asset history, not just trade capacity.
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Portsmouth has 355 actively trading plumbing and heating companies in scope, making this a local contractor market rather than a national platform story. Reported employment across the cohort is 632 people, spread across firms with headcount disclosures. Scale is thin at the upper end: 6 companies report turnover above £5M, while 72 firms were incorporated since 2022. That mix points to a large service base of owner-managed and small employer businesses, with only a narrow layer of contractors likely to carry larger commercial maintenance programmes or multi-site property portfolios.
Work is shaped by competence, safety, insurance and record-keeping obligations, especially where contractors service boilers, heating controls and occupied properties. Domestic jobs bring consumer cancellation, quote and complaints exposure; commercial work adds site access, health-and-safety method statements and service-level expectations. The market structure is local and fragmented, with repeat maintenance relationships sitting beside reactive callout demand. For researchers, that means turnover size alone can miss operational maturity: engineer scheduling, certification trails and asset records often say more about a contractor’s ability to service recurring accounts.
Capacity appears likely to matter more than breadth of offer. The cohort is weighted towards local operators handling planned maintenance, quoted repairs and reactive work, so differentiation tends to come through engineer availability, compliance evidence and repeat-account discipline. Larger contractors may continue to absorb recurring portfolios where smaller firms cannot support callout coverage, but consolidation looks more incremental than sweeping. Software adoption is also likely to be practical rather than speculative: scheduling, asset history, engineer notes and quote control are nearer the buying trigger than new customer-acquisition tooling.
355
Active firms
2026
6
Above £5M
reported revenue
72
New since 2022
incorporated firms
Key facts
About 1% of the trading cohort reports turnover above £5M (6 of 355 firms) — the rest sits below that revenue band.
20% of the cohort was incorporated since 2022 (72 firms), so a sizeable share is in its first few filing cycles.
Plumbing and heating in Portsmouth sits within local property services, with demand tied to occupied buildings, maintenance cycles and urgent faults.
Service scope covers installation, repair and maintenance of pipework, boilers and heating systems across Portsmouth and its wider metropolitan area.
For suppliers and sales teams, segmentation is likely to rest on service coverage, labour capacity and repeat maintenance exposure rather than headcount alone.
Top Portsmouth Plumbing & Heating companies
Hampshire Plumbing & Heating Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating contracting services for residential, commercial and new-build projects. Offers mechanical and electrical design, installation and renovation, including underfloor…
Serves B2B property developers, contractors and facilities owners across private and social housing, offices, refurbishment, leisure, industrial, medical and retail premises, alongside domestic…
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 4y
Location
GEO M&E LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsInstalls, services and repairs heating, cooling and renewable energy systems for homes, including heat pumps, gas boilers, air conditioning, solar PV, solar thermal systems, MVHR ventilation, EV…
Serves residential homeowners in Portsmouth, Hampshire and the South Downs, including households looking to improve home comfort, energy efficiency and sustainability.
Financial Health
StableStable · 0% CAGR over 4y
Location
CRANESWATER MECHANICAL SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides gas engineering and plumbing services including installation, servicing and repair of gas boilers, central heating systems, water heaters and gas appliances. Also issues landlord gas safety…
Serves homeowners, landlords and older residents in Portsmouth and Hampshire needing domestic gas, heating and plumbing support.
Financial Health
StableStable · -1% CAGR over 4y
Location
Arcadia Heating & Plumbing Services Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides maintenance, servicing and repair of commercial heating systems, domestic hot water boilers, heating plant and plumbing equipment. Offers reactive and planned maintenance contracts and…
Serves commercial, industrial, healthcare, education and construction clients nationwide, including NHS hospitals, specialist residential schools, colleges, leisure centres, care homes and offices.
Financial Health
StableStable · 0% CAGR over 2y
Location
Simer Environmental Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides building services engineering including installation, maintenance and repair of HVAC systems, air conditioning and gas boilers. Also delivers electrical services, system testing, fault…
Serves industrial and commercial organisations, facilities managers, property groups and public sector bodies across the South of England, including sites needing building services support.
Financial Health
HealthyHealthy · 4% CAGR over 2y
Location
NEWWAY MECHANICAL LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing and gas engineering services for residential and commercial properties, including boiler installation, servicing and repair, central heating system installation, underfloor heating,…
Serves both homeowners and commercial property customers, selling plumbing, heating and gas services to domestic households and businesses needing boiler installation, servicing, repairs and wider…
Financial Health
StrongStrong · Hiring · 123% CAGR over 2y
Location
Sylvadale Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating services including general plumbing repairs, leak and pipe fixes, boiler installation, servicing and repairs, and LPG appliance work. Also designs and installs…
Serves domestic customers, landlords and property owners across Portsmouth and the South, including households with LPG appliances and people needing accessible bathroom adaptations.
Financial Health
StableStable · Hiring · 14% CAGR over 4y
Location
Environmental Projects Southern Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing and heating services for domestic and commercial properties, including boiler installation, servicing and repairs, central heating systems, bathroom installations, pipework,…
Serves homeowners plus commercial and industrial customers needing plumbing and heating work, including boiler servicing and installations. Targets domestic and business users across Southampton,…
Financial Health
HealthyHealthy · Hiring · 58% CAGR over 2y
Location
Jem Property Services Group Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides property maintenance and repair services for commercial and social housing sectors, including gas, plumbing, electrical and drainage work, locksmith services, uPVC window and door…
Serves commercial, public and third-sector property owners/operators in the South, including care homes, schools, housing associations, social housing landlords and facilities management teams.
Financial Health
DistressedDistressed · -4% CAGR over 2y
Location
AD Mechanical
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs mechanical building services for commercial and industrial projects, including chilled water systems, ventilation, gas installations, plant rooms, boilers, chillers and HVAC…
Serves industrial and commercial clients across the South of England, including main contractors, care homes, hotels, education providers, defence sites, student accommodation, residential…
Financial Health
WeakWeak · -2% CAGR over 4y
Location
CDM DECORATING & INTERIORS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building refurbishment and maintenance services including interior decoration, passive fire protection, electrical and fire alarm installation, insurance reinstatement works, and commercial…
Serves commercial, public-sector and institutional clients, including healthcare, leisure, residential property and insurance sectors, across Hampshire, Surrey, London, Sussex, Dorset and Berkshire.
Financial Health
StrongStrong · Hiring · 63% CAGR over 4y
Location
Gascore Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides plumbing and heating services including boiler installation, servicing and repairs, powerflushing, hot water cylinder installation, underfloor heating systems, bathroom plumbing, radiator…
Serves domestic and commercial customers in Surrey, Sussex and surrounding areas, including homeowners, property occupiers and businesses needing plumbing and heating support.
Financial Health
StrongStrong
Location
Hampshire-NRG Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · Hiring · 19% CAGR over 4y
Location
Camber Gas Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable
Location
Hodge Plumbing & Heating Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
S.R.Gas Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -7% CAGR over 4y
Location
Goldring Plumbing & Heating Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · Hiring · 22% CAGR over 2y
Location
Omni Heating Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
Prospect Plumbing & Heating Ltd
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
JPH PLUMBING AND HEATING LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong
Location
Boiler Heat and Plumbing Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
Apex Mechanical Projects Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
HealthyHealthy · 0% CAGR over 3y
Location
A&p Bul Ltd
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
True Blue Gas Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Southern Counties Heating & Plumbing Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides design and installation of plumbing, heating, gas and air source heat pump systems for new-build and renovation projects. Also installs air conditioning and ventilation and manages projects…
Sells mainly to property developers, building contractors and commercial clients needing plumbing, heating and gas installations for new-build and renovation projects. Also serves homeowners and…
Financial Health
DistressedDistressed · 0% CAGR over 5y
Location
Gavin Driver Plumbing & Heating Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
South Downs Mechanical Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · Hiring · 32% CAGR over 4y
Location
PPH South Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
INDUSTRIAL HEATERS (SOUTHERN) LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -60% CAGR over 5y
Location
Portsmouth Gas Heating Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
HealthyHealthy · Growing · 0% CAGR over 3y
Location
Fosters Gas & Heating Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
Celsius Heating. Plumbing Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Prospect Gas Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
D Taylor's Plumbing & Heating Ltd
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
R-gas Heating Ltd
Trajectory
2y · 2025–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StableStable · -25% CAGR over 1y
Location
SATURN GAS HEATING AND PLUMBING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
Paul Onions Plumbing Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
All About Gas, Heating And Plumbing Services Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides domestic and commercial boiler installation, repair and servicing, central heating and hot water system repairs, gas safety inspections, and power flushing. Also installs energy‑efficient…
Serves homeowners and commercial property customers across Portsmouth, Hampshire, West Sussex and Surrey, including businesses needing domestic, commercial or industrial heating support and gas…
Financial Health
WeakWeak · 0% CAGR over 3y
Location
THE HEATING STORE LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides plumbing and heating services including boiler installation, servicing and repairs, central and underfloor heating systems, power flushing, and drainage work. Also installs air source heat…
Serves domestic households and commercial property owners across Hampshire, particularly those arranging maintenance, repairs or installations for building services.
Financial Health
WeakWeak · 0% CAGR over 1y
Location
AES Environmental Systems Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides heating, ventilation and air conditioning (HVAC) and mechanical building services, including installation and servicing of air conditioning, ventilation, heating systems, commercial…
Serves B2B organisations across the South Coast in commercial, industrial, education, healthcare, defence, scientific and food sectors, targeting facilities and estates teams responsible for…
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
Pentland Plumbing Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic and commercial plumbing and heating services, including boiler servicing, repairs, system installations, heat pump installation, and maintenance. Also undertakes plumbing works and…
Serves homeowners, landlords, business owners and facilities management teams needing plumbing and heating support in Portchester, Fareham and surrounding Hampshire areas.
Financial Health
StrongStrong · Growing, Hiring · 29% CAGR over 4y
Location
Storm Air Conditioning Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides design, installation, commissioning, servicing and maintenance of air conditioning, heating, refrigeration and ventilation systems for domestic, commercial and industrial properties,…
Serves domestic, commercial and industrial customers throughout Hampshire, including homeowners, retailers, offices, hospitals, care homes, MOD sites and manufacturing facilities.
Financial Health
StrongStrong · Growing, Hiring · 59% CAGR over 3y
Location
EXCELSIOR HEATING SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsInstalls, services and repairs domestic and commercial heating and plumbing systems, including air and ground source heat pumps, gas, LPG and oil boilers, MVHR ventilation, underfloor heating and…
Serves homeowners, landlords and businesses with domestic and commercial properties, including flats, detached homes, new builds, listed farmhouses, leisure facilities and commercial premises across…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
Location
Portsdean Technical Supplies & Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and heating services including installation, servicing and repair of domestic gas boilers and heating systems. Offers system design and installation, maintenance plans, emergency…
Serves private householders, landlords, letting agents and boiler manufacturers across Fareham and an area spanning Bognor, Bournemouth and Guildford.
Financial Health
WeakWeak · Hiring · 3% CAGR over 5y
Location
Mkg Building Services Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical, electrical and HVAC engineering services including design, installation, repair and maintenance of air conditioning, heating, gas, plumbing, ducting and ventilation systems for…
Serves B2B commercial and industrial clients across the South of England, including facilities with catering or kitchen ventilation needs, alongside selected domestic and residential customers…
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 2y
Location
Limburn Boiler & Heating Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical engineering services including installation, refurbishment and maintenance of commercial and industrial boiler, heating and piped systems. Also carries out HVAC and air…
Serves commercial and industrial customers needing boiler, heating and piped-system support, including facilities managing plant and mechanical systems. Also works with insurance companies on…
Financial Health
StableStable · 2% CAGR over 4y
Location
ASTER BUILDING SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides installation, maintenance and repair of heating, ventilation and air conditioning (HVAC) systems for commercial buildings. Services include air conditioning, refrigeration, ventilation,…
Serves commercial property owners, facilities managers and organisations needing HVAC, refrigeration and M&E support, mainly across Surrey, Berkshire, Hampshire, West London and South London.
Financial Health
StableStable · Hiring · 15% CAGR over 2y
Location
Ampella Holdings Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides installation, servicing and repair of gas boilers and central heating systems for domestic and commercial customers. Also carries out heating system maintenance, powerflushing, radiator and…
Sells to domestic homeowners, landlords and commercial clients needing boiler, heating and plumbing support. Serves homes and businesses across Surrey, Hampshire and West Sussex, including buyers…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
E.C. Cole Limited
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing, heating and gas engineering services including boiler installation and repair, central heating systems, gas appliance fitting, bathroom installations, and solar panel installation.…
Serves domestic households and commercial enterprises in Hampshire, West Sussex and the wider South needing heating, plumbing, gas, bathroom and related property support.
Financial Health
WeakWeak · -7% CAGR over 5y
Location
R L Plumbing and Heating (South Coast) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic plumbing and heating services including gas boiler installation and servicing, heating system installation, power flushing, and underfloor heating. Also installs bathrooms,…
Serves homeowners across the South Coast/Southern region, alongside builders, schools and nursing homes needing plumbing and heating support.
Financial Health
StableStable · Hiring · 19% CAGR over 4y
Location
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How Portsmouth Plumbing & Heating companies work and how to sell to them
What they do
Most Portsmouth-area plumbing and heating contractors earn through a blend of quoted installation work, reactive callouts, planned servicing and ongoing maintenance accounts. Revenue is usually labour-led, with parts marked up or passed through, and pricing tends to move between fixed quotes, hourly or day rates, emergency premiums and contract schedules for recurring customers. The service shape is practical rather than platform-like: engineers, vehicles, tools, merchant relationships, safety paperwork and job records. Margin depends on utilisation, access to the property, first-time fix rates and whether variation work is captured before it turns into unpaid goodwill.
Who they sell to
Typical customers range from householders and private landlords to letting agents, housing providers, care settings, retailers, schools and small commercial landlords. The buyer is often an owner, property manager, estates manager, facilities lead or managing agent, with finance or procurement appearing mainly where a portfolio contract is at stake. Reactive jobs can be booked after one call or web enquiry, while planned maintenance contracts tend to require site visits, credential checks, insurance documents and agreed response terms. Most work is won through repeat relationships, local search, referrals and quote comparison; larger accounts may use approved-contractor lists or tender packs.
What they buy
Most plumbing and heating firms tend to spend on field-service scheduling, mobile job sheets, quote and invoice tools, accounting, payroll, payments, telephony and customer messaging. Contractors with recurring accounts also need asset registers, service reminders, evidence capture, document storage and reporting for landlords or facilities teams. Outside software, common spend areas include vans, fuel cards, insurance, training, recruitment, uniforms, tools, parts inventory, waste handling and local marketing. The most credible pitches usually connect to a live operational leak: fewer missed appointments, faster invoicing, clearer engineer notes, better stock control or less admin between the office and the van.
Why and how to sell to them
Plumbing and heating buyers tend to evaluate suppliers when workload outgrows the office routine: new maintenance accounts, extra engineers, rising callout volumes, missed service dates, margin pressure on quoted works or complaints about proof of attendance. Regulation and insurance can also trigger buying, particularly where records are scattered across email, paper job sheets and personal phones. Outbound works better when it is specific to the trade rather than generic productivity language. A useful angle is to show how the offer reduces non-billable coordination, protects service evidence and helps the owner or operations lead see job margin before the month-end accounts arrive.
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.
Also in Portsmouth
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Frequently asked questions
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