HVAC Sizing Tool
A quick BTU and ton estimate for sizing conversations with HVAC contractors — not a substitute for a Manual J calculation.
Oversized AC short-cycles, fails to dehumidify, and wears out fast. Undersized AC runs constantly and never catches up. Sizing matters.
Related tools & guides
Rooms you can plan with this tool
Real-room inspiration that uses this tool's outputs.
kitchen
Industrial loft kitchen — concrete floor, blackened steel cabinets, oak island
industrial, modern
laundry
Modern laundry room — folding counter, drying rod, hidden hamper
modern, minimalist, scandinavian
bathroom
Coastal bathroom — board-and-batten, white tile, brushed brass done right
coastal, traditional