
Offices and meeting rooms
Ceiling cassettes or wall units zoned so the meeting room and the open-plan floor are set separately. Quiet enough that nobody notices it on a call.
From one cassette over a shop floor to a row of condensers on a factory roof: installed around your opening hours, maintained on a schedule, and with the F-Gas paperwork kept straight.
People, computers, machinery and glass all add heat. Commercial systems are sized from that load, not from the floor area, and placed where they can be maintained safely.

Ceiling cassettes or wall units zoned so the meeting room and the open-plan floor are set separately. Quiet enough that nobody notices it on a call.

Units rated to cool all year round, including January, and often fitted in pairs, each sized to cool the room on its own, so one can fail without the room overheating.

High roofs, big doors and machinery make their own weather. Cooling the areas where people work can make more sense than cooling the whole volume, and dust clogs filters fast, so workshop units usually need cleaning every 3 to 6 months. Plant goes where it's safe to reach, with the pipework protected from forklifts and weather.
A planned schedule spots worn fans, weak capacitors and slow leaks on a quiet Tuesday, not in the middle of a heatwave. Every visit leaves a record you can show an auditor, a landlord or an insurer.
Ask about a maintenance planEvery maintained site gets an asset register like this, updated at each visit. The rows below are a cut-down example, not a real customer - the full register also lists the make and model of every indoor and outdoor unit.
| System | Location | Type | Refrigerant | CO2e | Leak check | Next visit |
|---|---|---|---|---|---|---|
| SYS-01 | Ground floor office | Ceiling cassette 7.1 kW | R32, 2.1 kg | 1.4 t | Not required | March |
| SYS-02 | Meeting room | Wall split 2.5 kW | R32, 0.8 kg | 0.5 t | Not required | March |
| SYS-03 | Comms room | Wall split 3.5 kW (duty) | R32, 1.1 kg | 0.7 t | Not required | March |
| SYS-04 | Comms room | Wall split 3.5 kW (standby) | R32, 1.1 kg | 0.7 t | Not required | March |
| SYS-05 | Rear roof, first-floor offices | Multi-split 10 kW, three indoor units | R410A, 3.6 kg | 7.5 t | Every 12 months - last checked March, no leak found | March |
Example only. Each row is one refrigerant system - indoor and outdoor units and the pipework between them - so the charge is the whole system's. CO2 equivalent = refrigerant charge x its global warming potential (R32 675, R410A 2088). At over 12 kW in total, this example site would also need a TM44 inspection. For systems that need leak checks, the F-Gas rules require the records to be kept for at least five years.
If you operate air conditioning, the F-Gas rules make you responsible for it: leaks must be repaired, only a certified engineer may work on the refrigerant, and larger systems must be leak-checked at set intervals with records kept.
We'll tell you which of your systems the rules apply to, put the checks on the schedule, and keep the records ready if anyone asks for them.
Most commercial installs happen around people still working. This is how we keep it that way.
None of it is essential to get started - but the more of it you can send, the faster and firmer the price.
Not with R22. Using it to service a system has been banned in the UK since 2015, so a leaking R22 system can't legally be topped up. Some systems can be converted to a replacement refrigerant, but at that age a new system is usually the better option - we'll quote for one, and reuse pipe routes where it's safe to.
If the air conditioning units you control in a building add up to more than 12 kW of cooling, they need an energy inspection by an accredited assessor at least every five years. We'll tell you whether yours do.
Only for systems holding 5 tonnes CO2 equivalent or more - roughly 2.4 kg of R410A or 7.4 kg of R32. A small R32 wall unit is well under it, but a larger R410A cassette, multi-split or rooftop system often isn't. Our asset register works it out system by system.
We walk the site, list every unit, check where it stands on F-Gas, and price the work or a maintenance plan.