BTU Calculator

Useful BTU Cooling Formulae:

  Equipment BTU = Total wattage for all equipment x 3.5
  Lighting BTU = Total wattage for all lighting x 4.25
  Total Occupant BTU = Number of occupants x 400
  Room Area BTU = Length (m) x Width (m) x 337
  Total Heat Load = Room Area BTU + Total Occupant BTU + Equipment BTU + Lighting BTU