Commercial HVAC Engineers
Reliable commercial HVAC system repairs to keep your business running smoothly
HVAC System Repair
Unexpected breakdowns can bring your business operations to a standstill. That’s why we offer fast-response HVAC system repair for all types of commercial systems, including rooftop units, packaged systems, VRF/VRV units, and split systems. Our experienced engineers are fully trained to diagnose and resolve issues quickly and safely, minimising disruption and keeping your premises comfortable year-round.
Whether it’s a fault with the controls, poor airflow, or system failure, our repair team gets your system back online - efficiently and affordably.
All our gas engineers are LCL Level 3 trained for fluorinated gases and ozone depleting substances (Category 1), ensuring full compliance with F-Gas government legislation. Our NICEIC approved electricians uphold the highest technical and safety standards, keeping your building safe and legally compliant. Businesses trust us across a range of industries, including schools, leisure centres, hotels, care homes, retail units, office buildings, warehouses, data centres, and commercial kitchens. With competitive rates, no call-out charges, and a reputation for excellence, we are the go to choice for reliable, cost-effective HVAC services.
Commercial HVAC Maintenance Experts
At John Murphy & Company, we specialise in providing reliable, cost-effective HVAC maintenance and repair services for commercial buildings of all sizes. From planned servicing to rapid callouts, our engineers ensure your heating and cooling systems are running efficiently - reducing downtime and extending the life of your investment.
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AC Repair
Is your air conditioning unit struggling to cool effectively, making strange noises, or tripping out? Our qualified team handles all types of AC repair, from refrigerant leaks to compressor faults and sensor errors.
We work with all leading manufacturers and carry a wide range of parts, meaning we can fix most air conditioning issues on the first visit. Let us take care of your commercial AC breakdowns - so you can get back to business without the headache.
AC Installation
Looking to replace an outdated system or install air conditioning in a new commercial space? We offer bespoke AC installation services tailored to your building’s layout, occupancy, and energy requirements.
From initial consultation and system design to expert installation and commissioning, we handle the full process in-house. We install high-performance, energy-efficient systems from trusted brands - keeping your building comfortable while controlling long-term energy costs.


Heating and Air Conditioning Maintenance
A well-maintained HVAC system is essential for comfort, efficiency, and compliance. Our scheduled heating and air conditioning maintenance contracts help reduce emergency callouts and extend equipment lifespan.
We check everything from filters, coils, fans, and ductwork to thermostats and control systems. Our maintenance schedules are tailored to your site and industry needs, with full digital service reports for your records.
Heating Repair
When your commercial heating system fails, you need a quick, reliable fix - especially during colder months. Our heating repair services cover all gas, electric, and air source systems, including boilers, heaters, and rooftop units.
Whether it’s a faulty thermostat, blocked flue, ignition failure or something more complex, our engineers will get to the root of the issue and resolve it fast - helping you maintain a safe and warm working environment.

Commercial HVAC FAQs
We provide a full range of HVAC services including system repairs, AC installation, planned maintenance contracts, heating repair, and emergency callouts, covering rooftop units, packaged systems, VRF/VRV units, split systems, boilers, and air source systems.
We work with a wide range of commercial clients including schools, leisure centres, hotels, care homes, retail units, offices, and warehouses across Slough and the surrounding areas.
Yes. All our HVAC engineers are LCL Level 3 trained for fluorinated gases and ozone depleting substances Category 1, ensuring full compliance with F-Gas government legislation.
Yes. We offer tailored maintenance schedules covering filters, coils, fans, ductwork, thermostats, and control systems. Regular servicing helps reduce emergency callouts, improve energy efficiency, and extend the lifespan of your equipment. Full service reports are provided after every visit.
Yes. Our engineers handle all types of AC repairs including refrigerant leaks, compressor faults, and sensor errors. We work with all leading manufacturers and carry a wide range of parts, meaning most issues can be resolved on the first visit.
Yes. We offer bespoke AC installation from initial consultation and system design through to installation and commissioning, all handled in-house. We install high performance, energy efficient systems from leading brands.
Yes. We offer fast response emergency HVAC repairs throughout Slough and the surrounding areas, helping you resolve breakdowns quickly and minimise disruption to your business.
Yes. All engineers hold an Enhanced DBS check and are fully trained in safeguarding protocols. We also use the DBS Update Service, enabling real-time checks of each engineer's DBS status for continuous monitoring.
Yes. We offer competitive rates with open book pricing and no callout charges, so you always know exactly what you're paying for.

Expert Commercial HVAC Services for Bucks & Berks
Addlestone, Ascot, Bagshot, Beaconsfield, Binfield, Bracknell, Bray, Braywick, Burnham, Chertsey, Colnbrook, Datchet, Egham, Englefield Green, Esher, Eton, Farnham Common, Gerrard's Cross, Hersham, Holyport, Iver, Maidenhead, Old Windsor, Reading, Shepperton, Slough, Staines, Stoke Poges, Sunbury-on-Thames, Sunningdale, Sunninghill, Taplow, Thorpe, Virginia Water, Walton-on- Thames, Warfield, Weybridge, White Waltham, Windlesham, Windsor, Winkfield Row, Winnersh, Wokingham
Why Choose John Murphy and Company for your HVAC Needs?
- Expert Engineers: Our NICEIC electricians and Gas Safe engineers bring years of experience to every project, adhering to the latest industry regulations for safe, legal, and efficient services.
- Competitive Rates: Cost effective HVAC solutions with open book pricing, ensuring you get value for money without compromising quality.
- Comprehensive HVAC Solutions: We offer a full range of HVAC services, including installation, maintenance, and repair.
- Enhanced DBS Checks:We take safeguarding seriously, ensuring that all our engineers undergo thorough background checks for your peace of mind.
- Emergency Call Outs: Rapid response to tackle emergencies and prevent downtime. Our team is committed to fast response times and minimal disruption.
- Health and Safety Commitment: Our engineers receive regular training in asbestos awareness, working at heights, and manual handling, with RAMS completed for every job.

State of the Art
Streamlined Job Management
To provide efficient, reliable service, we use a state of the art Job Management System where every job is logged and tracked electronically. Our engineers use mobile tablets for real time job allocation, complete with site specific Risk Assessments and Method Statements.
This digital job tracking system allows us to accurately monitor time and materials used, ensuring faster response times, improved efficiency, and quicker delivery of documentation - giving our clients a seamless and reliable service experience.

01753 316333
office@johnmurphyandco.co.uk