Supply Air Temperature Calculator — HVAC SAT

Solve For

Room Temperature (°F)

Airflow (CFM)

Sensible Load (BTU/hr)

Elevation (ft) — for altitude correction

Supply Air Temp

—

°F

ΔT (Room − SAT)

—

°F

Sens. Factor (1.08 adj)

—

altitude-corrected

Formula

Q = 1.08 × CFM × ΔT (sea level)

Where:
· Q = sensible heat (BTU/hr)
· 1.08 = 0.244 BTU/lb·°F × 0.075 lb/ft³ × 60 min/hr
· CFM = supply airflow
· ΔT = Room Temp − Supply Air Temp (°F)

At elevation, 1.08 is reduced proportionally to air density. At 5,000 ft ≈ 0.90.

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