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Mini Split BTU Chart

Use this mini split BTU chart as a rough planning reference before getting a load calculation.

Last updated: May 2026

Mini split BTU chart by room size Pinterest image for Mini Split BTU Chart

Chart values

Mini Split BTU Chart values
250 to 450 sq ft6k to 9k BTU
450 to 750 sq ft9k to 12k BTU
750 to 1,000 sq ft12k to 18k BTU
Poor insulationUse professional sizing

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Use the exact calculator

Home Air Mini Split Size Calculator Estimate mini split BTU size from room square footage, ceiling height, sun exposure, insulation, people, and kitchen or heat-load factors. Home Air Heat Pump Savings Calculator Estimate heat pump savings by comparing current heating cost, heat pump efficiency, usage, and expected percent of load shifted.

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Charts are quick references. The calculator lets you adjust inputs and get a more specific estimate.

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