CFM per Ton Calculator
Who it's for: HVAC installers, startup technicians, and estimators.
Calculator Inputs
Quick Summary
- Built for: HVAC installers, startup technicians, and estimators.
- Key outputs: Total CFM, Selected CFM per ton, and more.
- Use this page for early planning estimates before final code and manufacturer verification.
Inputs
- System tons
- Target CFM per ton
- Heating mode note toggle
Outputs
- Total CFM
- Selected CFM per ton
- Guidance note
How this calculator estimates results
- Multiplies entered system tons by the selected CFM-per-ton target.
- Reports total airflow as a first-pass planning value.
- Shows non-binding guidance text for interpretation.
Cross-check assumptions with AC Tonnage Calculator for a more complete planning workflow.
Common ranges and tips
- Use measured external static and blower data for final airflow verification.
- Humidity goals and coil performance often influence final CFM-per-ton targets.
- Cross-check branch velocities after setting total airflow.
Related Calculators
FAQ
No. It is a common baseline, but final targets depend on equipment, climate, and humidity goals.
Projects with different latent/sensible priorities may use lower or higher targets during design.
No. This is a planning calculation; final airflow should be measured and verified in the field.
In this MVP, heating mode only changes helper text; math remains system tons x CFM-per-ton.
Disclaimer: Use results for planning only. Final design and installation decisions must follow local code and manufacturer documentation.
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