Manual J Lite Load Calculator
Estimate room-by-room heating and cooling loads.
Result
Heating BTUh
246150
Cooling BTUh
155250
Recommended tonnage
12.94
About this tool
Run a residential Lite Manual J using sq ft, ceiling height, window area, climate zone, and insulation. The companion r/HVAC sanity check before quoting a full ACCA load.
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