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HVAC Ductless Mini-Split BTU & Tonnage Room Sizing Calculator

Calculate correct heating and cooling BTU requirements and mini-split compressor tonnage based on square footage, ceiling height, and sun exposure.

Inputs used by this tool

Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.

Input type: number
Input type: number
Input type: select

Data handling varies by tool. Review its notes and the Privacy Policy before entering sensitive information.