HVAC Companies in Glasgow: 437 Active Firms (2026)
HVAC and refrigeration companies install, maintain and repair climate-control systems for commercial and industrial sites across Glasgow.
Buying decisions tend to sit with facilities teams, estates managers, property operators and main contractors rather than end users of the buildings themselves. Work is usually sold as planned service cover, reactive call-out capacity or project packages tied to refurbishments, plant replacement and compliance-led upgrades. The customer base is mostly business-to-business, spanning retail, hospitality, healthcare, education, logistics and manufacturing sites across the Glasgow metropolitan area. Engagements range from local maintenance contracts to larger building-services packages where ventilation, cooling, heating and controls work sit under the same contractor relationship.
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Glasgow has 437 actively trading HVAC and refrigeration firms in this list, making it a defined local contractor market rather than a loose national supplier category. Reported employment adds up to 1,348 people, reflecting the labour-intensive nature of installation, servicing and repair work. The market includes a small revenue-scaled tier, but many firms appear to remain owner-managed or project-led, with capacity shaped by engineer availability, van-based coverage and the ability to respond across commercial and industrial sites without carrying excessive idle labour.
Compliance tends to shape the buying conversation as much as price. Cooling, ventilation and heating work touches occupied buildings, plant rooms, food-storage environments and industrial processes, so customers usually expect evidence of qualified engineers, documented maintenance, safe access arrangements and clear fault records. Refrigeration work also sits within a market where refrigerant handling, leak prevention and end-of-life equipment decisions matter to landlords and operators. For researchers, the practical structure is therefore not just installation versus maintenance; it is planned compliance work versus urgent operational continuity, with the latter often carrying the higher switching friction.
The local market appears likely to remain fragmented, with a long tail of small contractors serving repeat commercial accounts and a thinner layer of mid-market firms able to cover larger estates. Demand tends to follow property use, equipment age and energy-efficiency pressure rather than discretionary technology spending. Newer entrants can win reactive and specialist work, but scale is constrained by recruitment, accreditation and service scheduling. Consolidation may continue where facilities-management buyers prefer fewer contractor relationships, although many customers still value local response times and engineer familiarity over a single national supplier model.
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
437
Active firms
2026
11
Above £5M
Reported revenue
123
Newer incorporations
Since 2022
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Key facts
About 2% of the trading cohort reports turnover above £5M (11 of 437 firms) — the rest sits below that revenue band.
28% of the cohort was incorporated since 2022 (123 firms), so a sizeable share is in its first few filing cycles.
Glasgow HVAC and refrigeration work spans installation, planned maintenance and repair for commercial and industrial sites.
System failures can affect energy use, compliance schedules and operational downtime, which gives maintenance cover a direct role in procurement decisions.
The contractor base appears fragmented, with local service coverage and maintenance capacity often mattering alongside scale.
Refrigeration specialists sit beside heating, ventilation and air-conditioning contractors, rather than forming a separate buyer market.
Top Glasgow HVAC companies
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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Computed from 5 filingsInstalls, maintains and repairs commercial and industrial air conditioning and refrigeration systems. Provides electrical and building climate control services, supplying cooling equipment and…
Serves domestic, commercial and industrial customers, including offices, small businesses, retailers, hospitality venues, local authorities, schools, logistics firms, hospitals and food sector…
Financial Health
StableStable · -70% CAGR over 4y
Location
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Computed from 3 filingsProvides commercial refrigeration and air conditioning services, including installation, maintenance and repair of AC systems, cold rooms, refrigeration equipment and walk‑in freezers for sectors…
Serves businesses and public-sector organisations across Scotland, including multisite retailers, hotels and hospitality venues, schools, healthcare providers, offices, food processors and industrial…
Financial Health
WeakWeak · Hiring · 10% CAGR over 2y
Location
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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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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 2 filingsProvides installation, servicing, maintenance and repair of commercial air conditioning and refrigeration systems. Supplies HVAC equipment from major manufacturers and installs renewable heating and…
Serves business and organisational clients in Scotland, particularly those with commercial premises requiring HVAC, refrigeration support, and decarbonisation or net zero programmes.
Financial Health
StrongStrong · Hiring · 80% CAGR over 1y
Location
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Computed from 5 filingsProvides commercial refrigeration services including equipment supply, system design, installation, servicing and preventative maintenance. Works with systems such as cold rooms, walk‑in freezers,…
Serves businesses across Glasgow and Central Scotland that require commercial refrigeration, including restaurants, retail outlets, industrial facilities and companies of varying sizes with cold…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Provides servicing, maintenance and repair of commercial air conditioning and HVAC systems, including VRV/VRF units, split systems, water chillers, heat pumps and air handling units. Also conducts…
Sells to businesses needing air conditioning, refrigeration and heat pump servicing and maintenance, plus other service providers and their end clients. Serves commercial customers across Scotland…
Financial Health
N/AN/A
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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Computed from 3 filingsProvides refrigeration and air conditioning services, including system design, installation, commissioning, maintenance and repair. Supplies and installs display cabinets and coldrooms, and delivers…
Serves B2B customers in the UK convenience retail sector, including well-known retail chains and independent retailers with store estates or shop premises.
Financial Health
HealthyHealthy · -1% CAGR over 2y
Location
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Computed from 4 filingsDesigns, installs and maintains air conditioning systems for commercial and residential premises. Provides repair, servicing and 24‑hour support, and works with brands such as Daikin and Mitsubishi.…
Serves businesses and homeowners across Central Scotland, including retail outlets, restaurants, offices and computer room operators.
Financial Health
HealthyHealthy
Location
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Computed from 5 filingsDesigns, installs and maintains air conditioning and climate control systems for commercial and domestic premises. Provides system design, equipment installation, planned maintenance contracts, and…
Serves commercial and domestic customers, primarily businesses across Glasgow, Edinburgh and Scotland, including small offices, retail units, hotels, leisure facilities, large commercial…
Financial Health
WeakWeak · -67% CAGR over 4y
Location
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Computed from 5 filingsSupplies, installs and commissions air conditioning systems for domestic, commercial and industrial properties. Provides maintenance and servicing for air conditioning and refrigeration equipment,…
Serves domestic customers and commercial and industrial organisations needing air conditioning equipment and maintenance, primarily across Glasgow, Edinburgh, central Scotland and wider Scotland.
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsDesigns, installs, services and repairs air conditioning and ventilation systems for commercial and domestic properties. Provides system maintenance, breakdown response, and certified ventilation…
Serves mainly commercial clients with sites across Scotland, including national companies and medical practices such as dentists, opticians and doctors, alongside domestic homeowners seeking…
Financial Health
DistressedDistressed · 0% CAGR over 5y
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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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.
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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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Computed from 5 filingsDesigns, installs and maintains refrigeration, air conditioning and HVAC systems for commercial and domestic buildings. Services include system design, installation, servicing and planned…
Serves commercial and industrial organisations, building owners and facilities teams, alongside domestic clients, across the UK.
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
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Computed from 5 filingsProvides energy efficiency services for commercial buildings, focusing on heating, ventilation and air conditioning systems. Conducts energy surveys, refurbishes and maintains ventilation plant, and…
Serves commercial and public-sector organisations, from SMEs to national organisations and government agencies, with facilities seeking lower energy use from HVAC, ventilation, heating and lighting…
Financial Health
StrongStrong · Growing, Hiring · 35% CAGR over 4y
Location
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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 5 filingsProvides ventilation and ductwork cleaning services, including kitchen extract and canopy cleaning, fire damper testing, microbiological sampling, and infection control cleaning. Also carries out…
Serves property managers, facilities teams and commercial kitchen operators across public and commercial sectors, including healthcare premises, offices and hospitality sites in the UK, with…
Financial Health
HealthyHealthy · -9% CAGR over 3y
Location
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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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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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Computed from 3 filingsProvides mechanical building services including design, installation and maintenance of heating, plumbing, gas systems, ventilation and air conditioning. Carries out boiler installation and…
Serves a mix of commercial and domestic customers across the UK and Ireland, including building owners, facilities managers, property managers, contractors and homeowners.
Financial Health
WeakWeak · Hiring · 5% CAGR over 2y
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 filingsManufactures, supplies and installs ventilation systems and ductwork. Provides thermal and acoustic insulation for pipework and ventilation, and carries out ventilation and kitchen extract duct…
Serves commercial kitchens and facilities teams in fast food outlets, hotels, restaurants, schools, hospitals, care homes and shopping centres, with supply-only customers across the UK.
Financial Health
WeakWeak · -5% CAGR over 2y
Location
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Computed from 3 filingsProvides electrical, mechanical, and fire and security services for domestic and commercial clients, including wiring and rewiring, lighting and power installations, alarms and access control,…
Serves a mix of UK homeowners and commercial clients, including retailers, architects, contractors, property managers and organisations requiring planned or emergency building services support.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
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Computed from 3 filingsDesigns, manufactures and installs ventilation and noise control systems. Provides end‑to‑end services including system design, fabrication, installation, testing and commissioning for industrial or…
Serves UK-based customers requiring ventilation and noise control systems, likely commercial or property-related buyers needing project support from design through commissioning.
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StableStable · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides commissioning management and testing for building services systems, including HVAC commissioning, clean air and cleanroom validation, water treatment checks, and fire damper testing. Also…
Serves public sector and commercial building clients, especially organisations operating clean air equipment, biological safety cabinets, clean room areas and sterile facilities.
Financial Health
StableStable · -1% CAGR over 2y
Location
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Computed from 3 filingsProvides electrical contracting services including installation, maintenance and periodic inspections for commercial, industrial and residential projects. Also installs HVAC and mechanical systems…
Serves commercial and industrial organisations, plus residential customers, with electrical, HVAC and mechanical requirements for projects, maintenance and inspections.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides HVAC commissioning and building services validation, including pre‑commissioning pipework cleaning, water hygiene and domestic water validation, RPZ testing, clean air and performance…
Serves commercial, industrial and residential clients, including universities, NHS/public-sector healthcare projects and district heating schemes, primarily in Scotland with coverage across the UK…
Financial Health
HealthyHealthy · 3% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
StableStable · -20% CAGR over 3y
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Computed from 5 filingsFinancial Health
WeakWeak
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Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 32% CAGR over 4y
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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
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Computed from 5 filingsProvides electrical contracting services including installation, maintenance and fault finding for residential and commercial properties. Also installs custom lighting, air conditioning systems, heat…
Serves residential homeowners and property owners, plus commercial and industrial clients needing electrical support for new builds, renovations, maintenance, heating, cooling, lighting, pools and EV…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
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Computed from 3 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 2y
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Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
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Computed from 5 filingsDesigns, manufactures and installs control panels and building energy management system (BEMS/BMS) controls. Provides commissioning, retrofits, energy monitoring and analytics, and environmental…
Serves businesses and organisations that own or manage buildings, targeting facilities, estates and energy teams responsible for building performance, energy use and internal environmental conditions.
Financial Health
StableStable · 0% CAGR over 4y
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Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
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Computed from 5 filingsFinancial Health
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Computed from 5 filingsProvides energy management services and designs and installs solar photovoltaic systems and ventilation solutions for residential and commercial buildings, supporting energy efficiency improvements…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
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Computed from 3 filingsProvides installation, servicing, maintenance and repair of commercial refrigeration and air conditioning systems. Supplies refrigeration equipment and installs cold rooms for sectors including…
Serves businesses and organisations needing commercial refrigeration and air conditioning, including supermarkets, pharmacies, fisheries, housing associations, food service providers, hotels,…
Financial Health
StrongStrong · Hiring · 12% CAGR over 2y
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Computed from 5 filingsProvides facilities management and building maintenance services including HVAC, plumbing, ventilation, electrical testing, and commercial gas systems. Also delivers mechanical and electrical…
Serves commercial property owners, facilities managers and multi-site businesses across Scotland, Northern England and the UK, including hospitality, financial services and trade/retail operators.
Financial Health
HealthyHealthy · Hiring · 25% CAGR over 4y
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Computed from 3 filingsProvides installation, maintenance and repair of commercial and industrial mechanical and electrical systems, including air conditioning, ventilation, heating, refrigeration, electrical installations…
Serves commercial and industrial businesses, especially facilities teams in factories and food production sites such as bakeries and fish processing plants.
Financial Health
StableStable · -88% CAGR over 2y
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Computed from 5 filingsDesigns, installs, services and repairs industrial and commercial refrigeration systems, including blast freezers, CO2 refrigeration, cold and chill stores, glycol chillers and ice machines. Also…
Serves businesses with industrial and commercial refrigeration needs, including operators of cold stores, chill stores, food processing or storage sites, and facilities using blast freezers, ice…
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StableStable · Hiring · 12% CAGR over 4y
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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.
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StrongStrong · Growing · 0% CAGR over 2y
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Computed from 5 filingsProvides design, installation and maintenance of air conditioning, refrigeration, process cooling and ventilation systems for commercial or industrial applications, including chillers, with a focus…
Serves commercial and industrial organisations with facilities requiring air conditioning, refrigeration, process cooling or ventilation systems.
Financial Health
StableStable · -3% CAGR over 4y
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Computed from 5 filingsDesigns, installs and maintains heating, ventilation and air conditioning (HVAC) systems for commercial and residential buildings. Provides air conditioning installation, ventilation systems, HVAC…
Serves commercial and residential building owners and tenants, including offices, retail stores, universities, bakeries and industrial facilities, as well as contractors across Scotland and the North…
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
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How Glasgow HVAC companies work and how to sell to them
What they do
Glasgow HVAC contractors usually earn revenue from a blend of planned service agreements, reactive repairs and fixed-price installation work. Retainers cover scheduled inspections, filter changes, fault finding and call-out priority; project work covers replacement plant, ventilation upgrades, controls changes and commissioning. Pricing is typically labour-plus-parts for smaller jobs, day-rate or schedule-of-rates for maintenance, and quoted packages for refurbishments or plant replacement. Gross margin depends less on licence-style scale and more on engineer utilisation, subcontracted specialist work, parts availability and the ability to keep service visits clustered by geography.
Who they sell to
Most sales conversations involve facilities managers, estates teams, property operators, technical managers and procurement staff, with main contractors acting as an additional route into refurbishment and building-services packages. Commercial customers tend to buy directly when the work is urgent or site-specific, while larger estate contracts often move through tendering, framework-style supplier lists or facilities-management partners. A typical deal is influenced by site access, asset age, uptime risk, engineer availability and evidence of prior compliance work. Sales cycles can be short for reactive faults, but planned maintenance and multi-site packages usually take longer because they require surveys, asset schedules and internal budget approval.
What they buy
Most HVAC firms tend to spend on tools that make field work easier to schedule, evidence and invoice. Relevant categories include service-management software, mobile engineer apps, quoting and job-costing systems, CRM, accounting, billing, fleet tracking, parts inventory and document storage for certificates, asset histories and risk assessments. Larger contractors may also buy HR systems, training support, health-and-safety advice, recruitment services, insurance, finance, marketing, cyber security and outsourced bookkeeping. Operational purchases still matter: vans, lifting equipment, test instruments, personal protective equipment, refrigerants, filters, controls components and access equipment sit close to revenue generation.
Why and how to sell to them
Buying intent often appears when HVAC contractors win a new service contract, add engineers, take on larger sites, replace manual scheduling, or start losing margin through repeat visits and delayed invoicing. Compliance paperwork, refrigeration record-keeping, call-out response times and poor visibility of engineer capacity are common pressure points. Outbound angles work better when they are tied to job throughput, first-time fix rates, faster quote-to-cash, safer documentation or lower administrative load, rather than generic efficiency claims. Contractors also tend to review suppliers after a service manager hire, a move into industrial or healthcare sites, or a period of missed calls and parts delays.
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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