HVAC Load

HVAC Load sizes heating and cooling for US houses from floor area, ZIP code and year built, giving BTU/h, tons, room-by-room airflow and duct sizes. It checks whether a chosen AC, furnace or heat pump fits the load and shows the balance point and backup heat for heat pumps. You can export a two page PDF report with your logo. The web app is free, needs no account and works offline after the first visit. Results are estimates in the style of ACCA Manual J and the tool is not affiliated with ACCA.