EdgeSpace BTU Calculator

EdgeSpace BTU Calculator is an offline HVAC field tool for rule-of-thumb cooling load and sensible airflow. Quick load: enter room area, a BTU/sq ft factor, and an editable climate multiplier. Get BTU/h, tons (12,000 BTU/h), and a suggested equipment range. Labeled RULE OF THUMB — not ACCA Manual J. Airflow: CFM = BTU / (1.08 × ΔT °F), plus reverse solves. Sensible heat only. Units: BTU/h, kW, tons, CFM, L/s, °F/°C, sq ft/m². WHAT YOU GET • Rooms that add up • Climate multiplier you can edit • Live diagram • PDF job ticket, share, and copy • Local history and favorites Not ACCA Manual J. Confirm Manual J / Manual D. No refrigerant tables. No account. No ads. No internet required.