Aircon BTU calculation for Singapore homes

Many people size by room area alone. That misses heat from sun exposure, glass, cooking, and how often the room is occupied.

When capacity is too low, the unit can run hard and still feel weak. When capacity is mismatched for the actual use pattern, comfort and bill complaints start early.

Start with the room use. A bedroom, living room, and study can have very different cooling demand even if the floor area looks similar.

Then note sun direction, window area, ceiling height, and whether doors stay open. These details matter more than a quick guess from a brochure table.

Capacity should match the room load, but system design still matters. Airflow throw, indoor unit placement, and multi split planning can change the result.

This is why two quotes with similar capacity numbers can perform differently in the same home. Ask how the contractor matched capacity to your actual room pattern.

A common mistake is copying a friend setup without matching room use. Another is choosing a larger system only because it sounds safer, without checking placement and usage pattern.

The better move is to compare how each quote explains the load assumptions. Clear assumptions make later cooling disputes easier to resolve.

Prepare room details before asking for recommendations. A clear brief helps you get a cleaner sizing answer and a better comparison across quotes.

If the room already struggles to reach set temperature, share that symptom pattern too so sizing is not blamed for an unrelated fault.