
Rooftop AC Installation in London & the M25
If you need rooftop ac installation, our team provides commercial support across London and the M25, with engineers who work on rooftop and packaged AC units in busy, occupied premises.
Officially RegisteredA good installation starts with a survey of the space, loads, power supply and positions for equipment, followed by careful installation and commissioning. Sharing the make, model and a photo of the rating plate in advance helps the engineer arrive prepared.
This page explains what rooftop ac installation involves, the faults and checks we commonly deal with, how we work on commercial sites, and what you need to know about compliance before booking.
About Rooftop And Packaged AC Units
Rooftop packaged units combine all refrigeration components in one weatherproof cabinet, supplying conditioned air to retail sheds, warehouses, gyms and restaurants through ductwork.
Exposed to weather all year, they need regular coil cleaning, belt and fan checks and attention to panels, seals and drainage.
What Rooftop AC Installation Includes
Every visit is scoped to the equipment and the problem in front of us. For rooftop ac installation, the work typically includes the following, with any extra work explained and agreed before it goes ahead.
- Site survey and design advice
- Supply and installation
- Pressure testing and commissioning
- Handover documentation
Common Rooftop Air Conditioning Unit Problems We Deal With
Most call-outs for rooftop and packaged AC units come down to a handful of recurring issues. Recognising them early helps you report the fault accurately and reduces downtime.
- Compressor faults
- Water ingress
- Economiser faults
- Control errors
- Loss of cooling
- Fan or belt failure
Checks Our Engineers Carry Out
A proper visit goes beyond fixing the obvious symptom. Depending on the equipment and the agreed scope, the engineer will check:
- Controls and safety devices
- Coils and filters
- Fans, belts and bearings
- Compressor operation
- Panels, seals and drains
- Dampers and economisers
Businesses We Support
We work with gyms, restaurants, industrial units, retail parks and many other commercial premises across London and the M25. We understand that equipment often has to be worked on while you are trading, so we plan visits to minimise disruption and keep areas clean and safe.
Multi-site operators and facilities managers can group equipment into one maintenance schedule, with consistent records across sites.
Compliance, F-Gas and Record Keeping
Air conditioning systems using fluorinated refrigerants fall under the F-Gas Regulations, so refrigerant handling, leak checks, recovery and recharging must be carried out by suitably certified engineers and recorded. Larger systems with an effective rated output above 12kW also need a TM44 air conditioning energy inspection at least every five years, which building owners and managers are responsible for arranging.
After the visit you receive a record of the work carried out, readings taken where relevant and any recommendations, which you can keep with your maintenance and compliance documents.
How to Book Rooftop AC Installation
Booking is straightforward and we keep you informed at each stage.
- Survey: Site, loads and access are assessed.
- Install: Equipment is fitted, piped and wired.
- Commission: The system is tested and handed over.
Why Businesses Choose Us for Installation
Commercial customers need more than a quick fix. We explain what has failed and why, give you clear options before extra work goes ahead, and leave written records that help with audits, insurers and future maintenance planning.
We also provide commercial gas safety certificates, catering equipment servicing and air conditioning work, so sites with several types of plant can deal with one contractor for planned visits and compliance paperwork across London and the M25.
Planning Ahead: Repair, Maintain or Replace?
Not every fault justifies a repair. Where rooftop and packaged AC units are old, use a refrigerant that is being phased down, or keep failing, the engineer will tell you honestly whether a repair is good value or whether planning a replacement makes more sense. Age, energy use, parts availability and the cost of downtime all feed into that decision.
For equipment worth keeping, a planned maintenance schedule matched to how hard it works is usually the most cost-effective way to avoid emergency call-outs and keep running costs down.
Engineer Tip
Safe roof access and edge protection should be confirmed before attendance so work can go ahead on the day.
Keeping a simple log of temperatures, alarms and faults also makes diagnosis faster and helps spot patterns before equipment fails.
Related Services
Frequently Asked Questions
Do you cover rooftop ac installation across London and the M25?+
Yes. We support commercial premises throughout London and the surrounding M25 area. Tell us the site postcode and the equipment details and we will confirm availability.
How quickly can an engineer attend?+
Response depends on engineer availability and location. Urgent faults that put stock or operations at risk are prioritised, and we will give you a realistic attendance time when you call.
Will I get a quote before work starts?+
Yes. The engineer explains the findings and any recommended work. Additional repairs or parts are agreed with you before they go ahead.
Are your engineers F-Gas certified?+
Refrigerant work is carried out by engineers holding the appropriate F-Gas certification, and refrigerant quantities and leak checks are recorded as required.
Do you work on all makes of rooftop and packaged AC units?+
We work on most commercial makes and models. Share the make and model when you book so we can confirm and prepare for the visit.
Book Rooftop AC installation
Send the make, model and the problem so we can send the right engineer.