Appliances & Utilities calculator
What Portable AC Size Do I Need?
Use room floor area, ceiling height, reference cooling capacity per area to find portable ac cooling capacity.
Enter your measurements
What Portable AC Size Do I Need uses room floor area, ceiling height, reference cooling capacity per area and the other configured measurements to return portable ac cooling capacity with a formula written specifically for this tool.
- Room floor area — Required
- Ceiling height — Required
- Reference cooling capacity per area — Required
- Sun exposure factor — Required
- Occupants above baseline — Optional
- Extra capacity per occupant — Optional
Portable AC cooling capacity
Enter the measurements above to calculate portable ac cooling capacity.
How the calculation works
V17 calculation: referenceHeight=2.44; baseCapacity=roomArea×baseCapacityPerArea×(ceilingHeight/referenceHeight)×sunFactor; occupantAdjustment=occupants×extraWattsPerOccupant; requiredCapacity=baseCapacity+occupantAdjustment. The result is reported as Portable AC cooling capacity.
Worked example
Example: Room floor area = 20 m²; Ceiling height = 240 cm; Reference cooling capacity per area = 50 W/m²; Sun exposure factor = 1; Occupants above baseline = 2; Extra capacity per occupant = 100 W. Result: Required Capacity = 1183.61 W; Base Capacity = 983.61 W; Occupant Adjustment = 200 W.
Before you decide
Measure the actual item, opening or body dimension involved. This page calculates the stated geometry or quantity only; product-specific construction or installation details can still affect the final choice. For what portable ac size do i need, the limiting result on this page is portable ac cooling capacity.
Direct measurement/geometry calculation. No external reference is required for the arithmetic itself; the result is derived only from the user-entered measurements and the formula stored in calculationLogicJson.
Frequently asked questions
What does the Portable AC Size calculator tell me?
It returns portable ac cooling capacity from the measurements entered on this page. The calculation is specific to portable ac size, so the result should be compared with the exact product or specification you are considering.
Which measurements should I take for portable ac size?
Measure room floor area, ceiling height, reference cooling capacity per area, sun exposure factor, occupants above baseline, extra capacity per occupant. Use clear, usable dimensions rather than nominal room or product labels.
Should I round the portable ac cooling capacity?
Keep the calculated value for comparison, then choose a real product that meets or stays within the returned portable ac cooling capacity while allowing for the clearances, tolerances or ratings shown by its manufacturer.