Aircon Calculator

It is an estimate. Real load calculation accounts for wall material, glazing type, building orientation, floor finish, infiltration and how often the room is used, most of which cannot be measured from a form.

Yes, but only to the next standard size. Going up two or three steps is the most common and most expensive mistake we see, because an oversized unit short-cycles and consumes more power.

Yes. Office floors, clinics and retail spaces need a room-by-room heat gain calculation with distribution design, which is what a site survey gives you.

Size each room separately rather than treating the whole flat as one space. Different rooms have very different heat gain, and one large unit rarely beats two correctly sized ones.