BTO Aircon Sizing Singapore: Room-by-Room Buying Guide

Choosing air-conditioning for a new flat is not simply a matter of matching a bedroom to a familiar capacity label. Good BTO aircon sizing starts with the spaces you will actually cool, the heat those spaces receive, and the rooms that need cooling together. It also depends on whether the proposed indoor units, outdoor unit and installation routes suit your completed home. This room-by-room buying guide from BTO Group Buy Singapore helps you turn a floor plan into a purchase brief. The aim is not to calculate a supposedly exact capacity from incomplete information. It is to help you collect useful measurements, challenge unsuitable assumptions and compare written proposals before committing. Product capacities, installation clearances, electrical requirements and warranty terms must come from the relevant manufacturer’s documentation, not a generic sizing chart. 1. Start BTO Aircon Sizing with a Cooling Brief Before asking which aircon system to buy, decide what the system must do. A household that cools only bedrooms at night has a different brief from one that also uses an enclosed study throughout the afternoon. A living room used occasionally for guests should not automatically dictate the same purchase as a living room occupied daily. Write down your normal routine and your credible busiest routine. Normal use should guide everyday suitability; the busiest routine helps the supplier explain what happens when several rooms call for cooling together. Avoid designing around an imaginary event while overlooking how the flat will actually be used. Spaces: Identify every enclosed room or connected area you intend to cool. Hours: Record whether each space is used during the day, evening or overnight. Occupancy: Note usual occupants and whether visitors regularly change that pattern. Boundaries: State which doors and partitions will normally be closed. Overlap: List the rooms likely to operate simultaneously. Priorities: Distinguish essential sleeping comfort from occasional supplementary cooling. Keep preferences separate from technical requirements. Wanting a particular indoor-unit appearance is valid, but it does not establish the required cooling capacity. Likewise, wanting every room connected to one outdoor unit does not prove that a particular combination can meet your simultaneous-use brief. Ask each supplier to respond to the same written brief. If one assumes bedroom doors stay closed and another assumes they remain open, their recommendations are not directly comparable. Resolving that mismatch early is more useful than negotiating between two headline quotations with different underlying scopes. 2. Measure the Actual Cooling Zone, Not Just the Floor Plan A floor plan is a starting point, not a complete site survey. Measure the length and width of each intended cooling zone and record the ceiling height. For an irregular space, divide it into simple shapes and add their areas. Mark your dimensions clearly so a supplier can distinguish me…