BTU Calculator

AC BTU Calculator
General Purpose BTU Calculator
Room Width Room Length Ceiling Height Sun Exposure Insulation People AC BTU Calculator
Enter room dimensions, occupancy, and environmental factors to calculate cooling requirements
Room Width Room Length Ceiling Height Temperature Change Insulation General Purpose BTU Calculator
Enter room dimensions, insulation, and desired temperature change for heating/cooling calculations

About BTU Calculator

Our BTU Calculator helps you estimate the heating and cooling requirements for your space. Whether you are selecting an air conditioner, heater, or planning HVAC installation, this tool provides accurate BTU calculations to ensure optimal comfort and energy efficiency.

What is a BTU?

BTU (British Thermal Unit) is a unit of energy used to measure the heating or cooling capacity of appliances. One BTU is the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit.

How to Use

  1. Select the calculator type based on your needs (AC or General Purpose)
  2. Enter the dimensions of your room or house
  3. Provide additional details like insulation, sun exposure, and climate
  4. Click Calculate to get the recommended BTU rating

Factors Affecting BTU Requirements

  • Room Size: Larger spaces require more BTUs
  • Ceiling Height: Higher ceilings increase the volume of air to be heated or cooled
  • Insulation: Better insulation reduces BTU requirements
  • Sun Exposure: Sunny rooms need more cooling capacity
  • Climate: Extreme climates require higher BTU ratings
  • Occupancy: More people generate additional heat
Disclaimer: The calculations provided by this tool are estimates only. Actual BTU requirements may vary based on specific conditions, appliance efficiency, and other factors. Always consult with a professional HVAC technician before making purchasing decisions.

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