Table
Duct Heater kW, CFM, Temperature Rise Table
Duct Heater kW, CFM, Temperature Rise Table lookup table with assumptions and boundary notes.
Scope
Air-temperature estimate only. It does not replace equipment selection, airflow measurement, or safety controls.
Lookup table
Estimate air temperature rise from heater kW and airflow using common HVAC arithmetic.
Scroll sideways to keep row labels aligned with hidden columns.
| Heater kW | Airflow (cfm) | Approx. rise (F) | Approx. rise (C) |
|---|---|---|---|
| 5 | 500 | 31.6 | 17.6 |
| 5 | 1000 | 15.8 | 8.8 |
| 10 | 1000 | 31.6 | 17.6 |
| 15 | 1500 | 31.6 | 17.6 |
| 20 | 2000 | 31.6 | 17.6 |
| 30 | 3000 | 31.6 | 17.6 |
Notes
- Check table values for preliminary lookup and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.