Sensible vs Latent Heat Explained Simply

When this applies

Use this guide to separate temperature change from moisture removal when you need cleaner HVAC load reasoning in early design discussions.

Tool to use

Sensible heat rate from mass flow or dry-air volume flow, cp, and temperature difference.

Open Sensible Heat Calculator →

Steps

  1. 1Define whether the load you are screening changes temperature, moisture, or both.
  2. 2Compute the sensible portion with airflow or mass-flow assumptions and a clear delta T.
  3. 3Document what is intentionally excluded from the quick estimate.
  4. 4Compare the result with total-load thinking before drawing equipment conclusions.
  5. 5Escalate to full psychrometric or cooling-coil analysis when latent loads matter materially.

Examples

  • Explaining why a room can feel humid even when dry-bulb temperature drops.
  • Quickly separating airflow sizing logic from dehumidification logic.

What to avoid

  • Treating total HVAC load as if it were all sensible.
  • Using inconsistent airflow units across the same estimate.
  • Forgetting that moisture control can dominate comfort outcomes.

Related tools

On the blog

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FAQ

Does this include latent heat?

No. This calculator isolates sensible heat only.

Why is sensible heat still useful alone?

Because many early airflow and temperature conversations start with the sensible component before moisture is layered in.

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