Estimate an AC capacity range from room area, ceiling height, sun exposure and occupancy.
Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.
This tool uses a practical volume-based baseline with adjustments for sun and people. Professional sizing also considers insulation, glazing and local design temperatures.
Example: A 25 m² room with a 2.7 m ceiling and average sun exposure often falls roughly in the 12,000–18,000 BTU/h range, depending on details.
HVAC capacity depends on more than floor area. Volume, solar gain, insulation, glazing, occupants and equipment loads all matter; critical selections require a proper heat-load assessment.
No. Oversizing can cause short cycling, poor humidity control and comfort issues.
Walls, roof, windows and air leakage can significantly change heat gain.
How much electricity and money does an AC use per day or month?
→How many kW or tons of cooling is a BTU/h rating?
→How much airflow does a room need in m³/h?
→How much electricity does a heat pump use for a given heat load?
→Tell us if a calculation is unclear, incomplete or appears incorrect.