HVAC Size Calculator – Estimate Room HVAC Capacity | CalHub

Advertisement

HVAC Size Calculator

Estimate the ideal HVAC capacity (BTU/h) for your room easily and accurately.

Results

Required HVAC Capacity: 0 BTU/h

Advertisement

About HVAC Size Calculator

The HVAC Size Calculator helps you estimate the appropriate air conditioning or heating capacity needed for your room. Correct sizing ensures comfort and energy efficiency, avoiding underpowered or oversized units.

How to Use?

  1. Measure your room's length, width, and height.
  2. Enter the number of people who occupy the room regularly.
  3. Select insulation quality of your room.
  4. Click "Calculate HVAC Size" to get the BTU/h requirement.

Frequently Asked Questions

Yes, it is completely free to use online.

Yes, you can select insulation quality to adjust the calculation.

It is designed mainly for residential rooms. Commercial rooms may need professional load calculation.

The result is displayed in BTU per hour (BTU/h).

It provides an average estimate; extreme climates may require additional adjustments.