Below please find a calculator that should help you get started with a rough estimate for your HVAC system. will help give an estimate that is measured in – BTU (British Thermal Unit).

“The British Thermal Unit, or BTU, is an energy unit. It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. 1 BTU = 1,055 joules, 252 calories, 0.293 watt-hour or the energy released by burning one match. 1 watt is approximately 3.412 BTU per hour.” –

This Calculates a Combination Of:

  • Size

  • Room Ceiling Height

  • Number of Regular People Inside

  • Type of Room

  • Insulation Condition

  • Sun Exposure

  • Climate

  • Desired Temperature

  • Other Factors

For a more accurate estimate, please call us and set up an appointment to discuss your system needs: (503) 623 – 2341