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HVAC Refrigeration Companies in Reading: 200+ Active Firms (2026)
HVAC refrigeration companies install, service and maintain heating, cooling and cold-chain systems for commercial sites across Reading.
Buying decisions tend to sit with facilities managers, estates teams, operations directors and property owners rather than central IT or procurement alone. Work is typically won through planned maintenance agreements, reactive call-outs and replacement projects where uptime, access windows and engineer availability matter more than pure equipment supply. The most relevant operators serve commercial and industrial sites around Reading, covering climate control, chilled storage and process cooling where failure can disrupt trading, production or tenant service levels. Engagements are local and service-led, with buyers favouring contractors that can support installed plant over time rather than complete a single installation and leave.
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Reading has 270 actively trading HVAC refrigeration firms, making this a local contractor market rather than a narrow specialist niche. The reported employment footprint is 486 staff, suggesting a long tail of small operators alongside a smaller group with enough field capacity to support scheduled maintenance and urgent repairs across commercial sites. That shape matters for buyers: many firms can quote for standard servicing, but fewer are likely to carry the management capacity, certification routines and engineer cover needed for multi-site facilities or industrial cooling work.
Only 4 Reading operators sit above £5M in turnover, so larger commercial buyers are likely to find a limited pool of local firms with the scale usually associated with formal account management and broader maintenance cover. Refrigeration and cooling work also tends to sit inside a compliance-led operating model: refrigerant handling, service logs, method statements, site induction and documentation discipline all affect whether a contractor can work in occupied commercial buildings or controlled industrial environments. Price matters, but procurement often turns on response times, continuity of engineers and evidence that maintenance routines are being followed.
Demand appears tied to the condition of installed building plant, the need to keep commercial sites operational and buyer pressure to reduce avoidable downtime. The cohort’s shape points to a service market where owner-managed contractors remain relevant, while larger facilities customers tend to prefer providers with scheduling depth and repeatable maintenance processes. Some consolidation may follow where succession issues, compliance workload or the cost of holding skilled engineers makes independence harder. Early-stage entrants can still find work through specialist niches, but scaling beyond local relationships usually requires dependable field management rather than sales reach alone.
270
Active firms
2026
4
Above £5M
revenue threshold
55
Recent incorporations
since 2022
Key facts
About 1% of the trading cohort reports turnover above £5M (4 of 270 firms) — the rest sits below that revenue band.
20% of the cohort was incorporated since 2022 (55 firms), so a sizeable share is in its first few filing cycles.
Demand in Reading tends to follow building occupancy, plant replacement cycles and the need to keep temperature-controlled commercial sites operating.
The local supplier base is weighted towards SME contractors handling installation, servicing and maintenance for commercial premises.
Cold-chain exposure gives refrigeration specialists a different sales pattern from general heating and cooling contractors.
Market coverage is relatively dispersed, so buyers and acquirers tend to segment firms by service radius, maintenance base and refrigeration capability.
Top Reading HVAC refrigeration companies
Delta Air Conditioning Services (Reading) Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns, installs and services air conditioning, heat pump and ventilation systems for commercial, industrial and domestic buildings. Supplies inverter heat pump equipment and provides maintenance…
Serves commercial, industrial and domestic customers across Reading, Berkshire and the Thames Valley, including corporate premises, public sector bodies, construction projects, building owners and…
Financial Health
StrongStrong · Hiring · 41% CAGR over 4y
Location
UKS Cooling Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides commercial heating, air conditioning and refrigeration services including installation, maintenance and repair. Also delivers boiler and plumbing servicing, BMS controls, water treatment,…
Serves commercial and industrial organisations across the UK, particularly facilities teams responsible for building heating, cooling, hot water, air conditioning and compliance needs.
Financial Health
StrongStrong
Location
WarmBox Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong
Location
Jit Plumbing Ltd
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Adam's Plumbing Service Limited
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Lj Renewable Heating Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
WeakWeak · 0% CAGR over 1y
Location
Small Job Plumbing Company Ltd
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
GASTECH READING LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong
Location
D Rock Plumbing And Heating Limited
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
SD Maintenance Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
WILTSHIRE PLUMBING & HEATING LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -10% CAGR over 4y
Location
I Basden Plumbing & Heating Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Ambassador F.C. Plumbing Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable
Location
MBO Plumbing Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 5y
Location
FIRST CALL HEATING & PLUMBING SOLUTIONS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · -29% CAGR over 2y
Location
INDUSTRIAL HEATING SOLUTIONS LTD
Trajectory
2y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
PROTOCOOL LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsInstalls, services and repairs air conditioning, heating and hot water systems for residential and commercial properties. Also provides commercial refrigeration systems, including cold rooms and ice…
Serves homeowners, families and businesses in Reading, Berkshire and surrounding areas, including commercial customers with air conditioning, heating, hot water, ventilation and refrigeration needs.
Financial Health
HealthyHealthy · Growing, Hiring · 11% CAGR over 5y
Location
Gelidus Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides air conditioning and ventilation services for commercial premises, including system design, installation, repair and planned maintenance. Also advises on environmental compliance for…
Serves B2B commercial clients from small businesses to multinational corporations, particularly in education, healthcare, hotels, leisure, offices, retail, scientific facilities and residential…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 2y
Location
UNIT 42 LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial property maintenance and engineering services, including commercial boiler servicing, HVAC installation and repair, building fabrication and manufacturing, and general facilities…
Serves B2B customers including commercial property owners, building managers and facilities teams with commercial buildings across Berkshire and West London.
Financial Health
DistressedDistressed · -68% CAGR over 4y
Location
TOTAL CLIMATE LTD
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides installation, maintenance and repair of air conditioning, refrigeration and ventilation systems for residential and commercial clients, including VRV systems, chillers, air source heat…
Serves homeowners and businesses across the South of England, including facilities managers, commercial kitchens, hospitality venues with cellars, server-room operators and mortuary facilities.
Financial Health
StrongStrong
Location
All Cool Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, installation, maintenance and repair of commercial air conditioning, HVAC and refrigeration systems, including VRF/VRV systems and cold rooms. Also hires portable air conditioners,…
Serves UK businesses across hospitality, food manufacturing, pharmaceuticals, offices, server rooms and data centres, plus event organisers needing marquee or outdoor event climate support.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Gardner Mechanical Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing and mechanical engineering services including heating system installation, commercial pipework, boiler replacement and repair, plant room and toilet refurbishments, air…
Serves commercial, industrial and domestic customers across Berkshire, North Hampshire, South Oxfordshire and West Surrey, including schools, facilities managers and property owners.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
Air Concept Refrigeration Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sales, installation, servicing, repair and maintenance of air conditioning and refrigeration systems. Offers reactive breakdown support and TM44 air conditioning inspections, working with…
Serves businesses and organisations of varying sizes, with emphasis on customers across the south of England and experience serving defence-sector clients requiring cleared engineers.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
Regale Refrigeration and Air Conditioning Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsInstalls, repairs and maintains commercial refrigeration and air conditioning systems, including cold rooms. Provides system design, planned preventative maintenance, emergency repairs, and energy…
Serves UK businesses and public-facing organisations needing commercial temperature control, including retail and wholesale distributors, hospitality venues, manufacturers, healthcare providers,…
Financial Health
StableStable · 2% CAGR over 4y
Location
Aztec Complete Services (Holdings) Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides commercial HVAC and refrigeration services including system design, installation, maintenance and servicing. Also undertakes mechanical and electrical installations, site surveys,…
Serves industrial, commercial and retail organisations, main contractors and domestic customers needing refrigeration, air conditioning, HVAC and mechanical services.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Technical Services Refrigeration & Air Conditioning Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns, installs and maintains commercial refrigeration, air conditioning and ventilation systems. Provides mechanical and electrical building services, system design, and planned preventative and…
Serves B2B customers in restaurant and leisure sectors, including commercial kitchens, cafés, private dining venues and hospitality operators needing facilities support.
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, installs, services and maintains air conditioning, heating and ventilation systems for commercial premises. Provides cooling solutions for offices, hotels, shops, factories, telecoms sites,…
Serves commercial clients, including offices, hotels and apartments, shops, factories, computer and server rooms, and telecoms sites, with emphasis on businesses in and around Woking, Thatcham and…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
Symtrex Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building and facilities maintenance services for commercial properties, including HVAC installation and servicing, air conditioning and refrigeration, electrical and lighting maintenance,…
Serves private organisations, commercial enterprises and estates across the South of England, especially facilities and property managers responsible for offices and other managed buildings.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
ARIA BUILDING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides installation, servicing and maintenance of air conditioning, ventilation and HVAC systems for commercial and residential buildings. Also carries out commissioning works, chiller repair and…
Serves a mix of commercial and residential customers, including office and property managers with single-site or multi-system estates, homeowners, and other contractors needing project specification…
Financial Health
StableStable · -70% CAGR over 4y
Location
EQUAZION LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides facilities management and building maintenance services, specialising in HVAC (heating, ventilation and air conditioning) systems. Delivers planned preventative maintenance, repairs,…
Serves businesses with offices, workplaces and commercial buildings, including major companies and smaller clients needing facilities management, HVAC maintenance and workplace EV charging support.
Financial Health
StableStable · -9% CAGR over 4y
Location
Ecotemp Environmental Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -27% CAGR over 4y
Location
Adaptive Cooling Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, installs, and maintains air conditioning systems for commercial and industrial buildings. Provides system design, on-site installation, servicing, and turnkey HVAC projects as a mechanical…
Serves businesses, contractors and property or facilities managers in the South East and South of England, across building projects of varying sizes.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
Location
Southern Maintenance Solutions (UK) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides installation, servicing and repair of commercial HVAC systems including heating, air conditioning and ventilation. Also delivers plumbing, drainage, water hygiene and treatment services,…
Serves commercial and public-sector facilities across the South of England, including schools, healthcare providers, hospitality venues, defence sites, retail, industrial and office premises.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
Location
BERKSHIRE MECHANICAL SERVICES LLP
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical engineering services for domestic and commercial properties, including installation, maintenance and repair of heating, plumbing, gas and air conditioning systems, ventilation and…
Serves homeowners, landlords and commercial clients with small and large premises within a 50-mile radius of Bracknell, including Berkshire, Buckinghamshire, London and Surrey.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
STRATFIELD MORTIMER RECRUITMENT LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical engineering services including pipe fitting and plumbing, and off‑site prefabrication of pipework modules, plant rooms, pump skids and riser modules. Installs and upgrades pipe…
Serves businesses, main contractors and construction/engineering teams delivering commercial and industrial building projects, including clients needing mechanical pipework, plumbing and…
Financial Health
DistressedDistressed · -29% CAGR over 2y
Location
Campbell West Electrical Ltd
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical building services including HVAC installation, electrical systems, plumbing and heating, and building management systems. Offers design, project management and…
Serves public-sector and commercial organisations, especially hospitals, healthcare estates, education providers and government sites, plus businesses with complex mechanical, electrical and HVAC…
Financial Health
StrongStrong · Hiring · 37% CAGR over 2y
Location
Argyle Electrical Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and mechanical (M&E) contracting services, including installation and fit‑out of wiring, lighting, HVAC plant, air handling units, boilers and electrical systems for commercial,…
Serves commercial, industrial and education-sector organisations, retailers, leisure venues and religious buildings, plus owners/developers of high-end homes, mainly in London, Berkshire, Surrey and…
Financial Health
HealthyHealthy · -5% CAGR over 5y
Location
HAINES TEMPERATURE SOLUTIONS LTD
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
WeakWeak · 0% CAGR over 3y
Location
Arc Control Systems Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, manufacture, installation and maintenance of HVAC and building management system (BMS) controls. Produces control panels, integrates equipment with building systems, and offers…
Serves commercial property owners, facilities managers, contractors and developers, including hotels, schools, offices, retail stores and industrial/manufacturing sites.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
Heron Mechanical Solutions Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, supply, installation, testing and commissioning of mechanical and electrical building services for commercial and industrial properties, including air conditioning, heating,…
Serves B2B customers managing commercial and industrial properties, including facilities managers, developers, contractors and site operators needing building services support.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
UK Aircon Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
B.Cool A/c Limited
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · Hiring · 26% CAGR over 3y
Location
GLOW PRO PLUMBING AND HEATING LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Enigma Environmental Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
SPLY LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy
Location
RH HEATING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
YATES AND SONS LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
ELITEFLOW SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial Health
Insufficient historyInsufficient history
Location
PRIMETECH ENGINEERS LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
NORTON AIR CONDITIONING LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
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How Reading HVAC refrigeration companies work and how to sell to them
What they do
Reading-area HVAC refrigeration contractors earn revenue from a mix of planned maintenance, installation work, reactive repairs and replacement of ageing plant. Recurring income usually comes from service agreements covering inspections, call-out priority, compliance paperwork and agreed response windows. Project work is more episodic, priced as quoted labour, equipment, materials and access costs, with margins affected by parts availability and engineer utilisation. Emergency repairs bring higher urgency but less predictable scheduling, especially where chilled storage, process cooling or tenant comfort is at risk. The core product is field engineering rather than equipment supply alone: buyers pay for diagnosis, safe handling, documentation and repeat service cover.
Who they sell to
Typical customers are commercial landlords, industrial occupiers, facilities management firms and property owners with buildings or processes that cannot tolerate long cooling or ventilation outages. Facilities managers and estates teams often shape the brief, while operations directors, finance leads and property owners tend to approve larger replacement or maintenance commitments. Smaller repairs are usually bought directly after a site visit or call-out, while planned maintenance and replacement projects may involve competitive quotes, approved-contractor lists or formal tendering. Sales cycles are short when a system has failed, but slower where work depends on budgets, shutdown windows, landlord approval or coordination with other building services trades.
What they buy
HVAC refrigeration firms tend to spend on anything that improves field utilisation, first-time fix rates and evidence of completed work. Relevant categories include job scheduling, mobile engineer apps, quoting, CRM, accounting, stock control, fleet management, asset registers, service documentation and customer portals for maintenance reports. Many also buy recruitment support, training administration, health and safety advice, insurance, finance, marketing services and outsourced bookkeeping. Contractors with larger commercial accounts often need better workflow between enquiry, survey, quote, purchase order, job sheet, invoice and renewal. Physical spend remains important too: vans, tools, diagnostic equipment, spare parts and controlled storage can shape whether service commitments are commercially viable.
Why and how to sell to them
HVAC refrigeration buyers tend to review suppliers when engineer diaries become difficult to manage, maintenance renewals slip, response-time promises are missed or margins are being lost between quoting and invoicing. Other triggers include a new facilities contract, expansion into industrial cooling work, a service manager hire, a backlog of replacement projects or higher compliance administration. Outbound messages usually land better when they connect to operational leakage rather than generic growth. Useful angles include fewer repeat visits, clearer proof of work, faster quote turnaround, better visibility of spare parts, simpler renewals and cleaner handover between office staff and field engineers.
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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