Planning calculator
Room BTU Calculator
Multiply room area by a project-specific planning rate to create a transparent preliminary capacity value.
Calculate planning BTU/h
Set the rate from your own load study or project criteria.
Formula
Planning BTU/h = room area (ft²) × selected planning rate (BTU/h per ft²)
Variables
The rate is deliberately an input: it should come from project requirements or a documented load analysis, not an assumed universal value.
Example
500 ft² × 20 BTU/h per ft² = 10,000 BTU/h as a planning value.
FAQ
Can this replace Manual J?
No. DOE guidance recommends recognized load-calculation methods such as ACCA Manual J for proper equipment sizing.