How to use this tool
Enter your values, run the tool, then review the result cards. Most tools update automatically when inputs change, so you can test several scenarios quickly.
Example inputs
- Room area sq ft: 250
Results this page provides
- Estimated BTU
How it works
Uses a simple BTU-per-square-foot rule of thumb.
Best use cases
Choose a starting size for room cooling.
Limitations
Sun exposure, insulation, ceilings, and climate can change requirements.