Build the brief around a normal busy day
Start with who uses each space, when it is occupied and what activity or equipment adds heat. A meeting room may sit empty and then fill quickly; a shop may have frequent door opening; a salon, studio or server area may carry a very different load from the adjacent office.
Room dimensions matter, but so do glazing, orientation, lighting, computers, appliances, footfall and existing ventilation. A survey should combine those factors before capacity is proposed.
Divide the premises into useful zones
Treating every room identically can leave one area uncomfortable while another wastes energy. Separate indoor units or control zones can match spaces with different occupancy and hours, provided the equipment and controls are selected as one coordinated design.
The decision between independent systems and shared outdoor equipment is explored in the single-split versus multi-split guide.
Account for doors, ventilation and customer comfort
Air conditioning is not a substitute for required fresh-air ventilation. Open doors, extract systems and the movement of people can also change the load. Customer-facing areas need comfortable airflow without aiming a persistent draught at seating, desks or a till position.
Plan installation around the operating premises
Access, working at height, delivery routes, electrical isolation, noisy tasks and the protection of stock or furnishings should be discussed before work begins. Landlord, factor or building-management approval may be needed, particularly where equipment or routes affect shared or external areas.
Outdoor positions should allow airflow and maintenance while considering neighbours and appearance. Read where indoor and outdoor units can go before assuming the nearest external wall is the final answer.
Make controls easy for the people who will use them
Agree who can change set points, whether schedules are useful and how different zones should operate. A clear handover should explain normal settings, timers, basic filter care and who to contact when something changes.
Design for maintenance from day one
Indoor filters, outdoor equipment and any condensate components need safe access. Responsibility for routine checks and professional maintenance should be documented rather than left uncertain after the installation team leaves.
See the air-conditioning servicing guide and FLO’s commercial air-conditioning service for the next step.
Share a simple floor plan, opening hours, staff and customer numbers, equipment loads, problem zones, access restrictions and any landlord requirements. That is more useful than asking for a system based on floor area alone.