What Clairglow Heating does

Clairglow Heating is a privately held, multi-trade building services contractor founded in 1976 and headquartered in Borough Green, Kent, serving South East England. The company delivers an integrated portfolio spanning domestic and commercial heating installation, electrical contracting, building refurbishment, and MCS-accredited renewable energy systems (Air Source Heat Pumps, Solar Thermal). Its service offering is unified under a single provider, reducing the coordination complexity typically required across mechanical, electrical, and construction trades, and is backed by an extensive accreditation portfolio including Gas Safe, OFTEC, NICEIC, MCS, CHAS, Construction Line, SafeContractor, ISO9001 and ISO14001. A distinguishing technical asset is its in-house designed mobile boiler plant room fleet, capable of delivering up to 600kW of temporary heating with 24-hour deployment for emergency breakdowns and planned refurbishments.

The company's go-to-market operates on two parallel tracks: an enterprise field-sales motion targeting local authorities, social landlords, and commercial institutions through competitive tendering and long-term servicing contracts, and a direct-to-consumer motion serving private homeowners via telephone and website enquiry. Recurring revenue derives from long-term servicing and breakdown contracts (notably with Maidstone Borough Council, PCHA, and BECHA following their 2023 merger), while project-based revenue comes from central heating installations, kitchen and bathroom refurbishments, electrical works with EICR certification, and mobile boiler hire. The firm maintains a 50-year operating history, an apprenticeship-driven talent pipeline, and a regional concentration in Kent with strategic positioning to serve London Boroughs and the wider South East. Revenue, headcount, and ownership structure are not publicly disclosed, and the company has no external institutional investors or M&A activity on record.

Name

Clairglow Heating

Legal name

Clairglow Heating

Website

https://clairglow.co.uk

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

11–50 employees

Short description

Clairglow Heating is a privately held, 50-year-old multi-trade building services contractor in Kent delivering heating, electrical, building, and renewable energy services to local authorities, housing associations, and private homeowners across South East England.

Ownership category

akta.pro rank

Product category

HVAC and Building Services

NAICS

Steam and Air-Conditioning Supply (221330)

SIC

Steam & Air-Conditioning Supply (4961), Electrical Work (1731)

akta.pro primary industry

Boiler & Hydronic Heating Repair & Service (HSAOAHAG)

akta.pro secondary industries

Hydronic/Baseboard Radiant Heating Service (HSAOACAE), Chillers, Boilers & Central Plant Operations (BPABACAG)

Keywords

• Heating services
• Building services
• Electrical installation
• Boiler hire
• Renewable energy

Headquarters

HQ city

Borough Green

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure, Technology or R&D

Revenue model

1. Servicing and Maintenance Contracts: Recurring revenue through long-term servicing and breakdown contracts with local authorities and housing associations, providing ongoing maintenance for housing stock portfolios.
2. Building and Refurbishment Projects: Project-based revenue from kitchen and bathroom installations, property refurbishments, and general building works for residential and commercial clients.
3. Mobile Boiler Hire: Temporary heating and hot water solutions rental for emergency breakdowns or planned plant room refurbishments, with delivery, installation, and engineering support.
4. Central Heating Installation: One-time installation revenue from new central heating systems, boiler replacements, and system upgrades across domestic, commercial, and public sector properties.
5. Electrical Installation Services: Electrical design, installation, maintenance, and compliance testing services including EICR certification for residential and commercial properties.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Clairglow Heating is a multi-trade building services contractor that installs, maintains, and repairs domestic and commercial heating systems, electrical installations, renewable energy solutions (heat pumps, solar PV), and provides mobile boiler hire alongside building and refurbishment services. The company primarily serves local authorities, housing associations, and private homeowners across Kent and the South East of England from its base in Borough Green.

Product overview

Clairglow Heating is a multi-disciplined building services company offering a unified portfolio of heating, electrical, and building services. The core product suite includes Domestic Central Heating (gas, oil, electric, and renewable systems), Commercial Heating for large-scale projects, Electrical Installation (NICEIC approved), Renewables (MCS-accredited Air Source Heat Pumps and Solar Thermal), Mobile Boiler Hire for temporary heating solutions, and Building & Refurbishment services. These offerings are delivered as integrated service lines by a single organisation, allowing customers to access mechanical, electrical, and building expertise from one provider.

Differentiator

Problem solved

Functional benefit

Products and services

• Domestic Central Heating Design, installation, servicing and repair of domestic central heating systems, boilers, and hot water solutions for private homeowners. Includes annual servicing, breakdown response, and full system upgrades.
• Commercial Heating Commercial heating system design, installation, maintenance, and refurbishment for local authorities, housing associations, schools, and other public/commercial premises. Includes plant room upgrades and communal heating schemes.
• Electrical Installation Full NICEIC-accredited electrical installation, maintenance, inspection, and testing services for domestic and commercial properties. Includes rewires, consumer unit upgrades, and EICR reports.
• Renewables Design, supply, and installation of renewable energy systems including air source heat pumps, solar PV, and solar thermal. MCS-accredited installations for residential and commercial clients.
• Mobile Boiler Hire Short- and long-term hire of mobile boiler plant rooms and temporary heating solutions for commercial and public sector clients, including housing associations and local authorities needing heating continuity during system upgrades or failures.
• Building and Refurbishment General building, refurbishment, and planned works services for housing associations, local authorities, and commercial clients. Includes property upgrades, adaptations, and construction works tied to heating/electrical projects.

Quantifiable outcome

• Emergency response within 24 hours for heating restoration
• +1 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Three partnerships are on record, tiered core.

• Penge Churches Housing Association (PCHA)coreStrategic or Co-development Partner · 1 October 2023Clairglow Heating provides Gas Servicing and Heating Installation contract services for PCHA's housing properties across the London Boroughs of Bromley and Bexley. Following PCHA's merger with BECHA, the partnership expanded to serve the combined housing portfolio, enhancing homes and services for residents.
• Bexley Community Housing Association (BECHA)coreStrategic or Co-development Partner · 1 October 2023Following BECHA's merger with PCHA in October 2023, Clairglow Heating continues to deliver heating services to the expanded housing portfolio spanning London Boroughs of Bromley and Bexley, providing Gas Servicing and Heating Installation contract services.
• Maidstone Borough CouncilcoreStrategic or Co-development Partner · 1 January 2023Clairglow Heating was awarded a Servicing and Breakdown Contract with Maidstone Borough Council in January 2023. The partnership involves maintaining and improving heating systems across the council's housing stock, providing mechanical advice for new housing purchases, and delivering ongoing servicing and breakdown provision. Clairglow's proximity to Maidstone positions them as a key local service partner.

Scale indicators9 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• British Gas: Nationwide energy services provider with a large heating installation, servicing, and breakdown division covering domestic and commercial customers. Comparable services but at much greater scale and broader scope than Clairglow.
• EDF Energy: UK energy supplier and heat pump installer (formerly assessing heat pump installations under its subsidiary brands). Comparable as a broad incumbent in residential heating and renewable energy solutions.
• E.ON UK: Major UK energy supplier with a home solutions division covering heating installation, heat pumps, solar, and boiler servicing. Overlapping capability in residential and small commercial heating with broader portfolio reach.
• Mitie: Large UK facilities management and building services group with an HVAC, heating, and building maintenance division serving public sector and commercial clients. Comparable in MEP/HVAC service delivery but at enterprise scale.
• Octopus Energy: Vertically integrated energy retailer building a significant heat pump installation arm (Octopus Heat Pumps) and home services offering. Comparable in renewable heating installation and energy transition positioning, with substantially greater capital and marketing reach.

Others

• Worcester Bosch: Leading UK boiler and heating manufacturer operating an accredited installer network that mirrors Clairglow's role as a certified installer. Related ecosystem participant rather than direct competitor.
• Baxi: UK boiler and commercial heating manufacturer with an installer partner programme. Indirectly comparable as a critical equipment supplier and brand competing for installer mind-share.

Emerging players

• Heat Geek: Fast-growing heat pump training and installer network focused on the UK domestic heat pump transition. Comparable as an emerging specialist channel targeting the same transition opportunity Clairglow is positioning for.

Direct peers

• Pimlico Plumbers: London-based heating, plumbing, and property maintenance contractor serving both private customers and enterprise clients. Directly comparable as a regional multi-trade heating services provider with a similar field-sales-led go-to-market.
• PH Jones: UK heating contractor with a long-standing social housing and local authority service book, including gas servicing, central heating installation, and renewable heating. Closely comparable contract profile and customer mix to Clairglow.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/clairglow

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Clairglow Heating