Manual J Cooling Load (Simplified)

Formula and source

Sensible cooling load = U×A×ΔT + solar gain + internal gain + infiltration. Latent load = 0.69 × CFM_inf × Δgr (grains/lb). Simplified estimator only; ACCA Manual J 8th ed. is the code-compliant method.

ACCA Manual J, 8th edition. NOAA NCEI cooling design temperatures by location (public domain).

Audience

This tile is built for hvac and the adjacent professions in the HVAC group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.

Related tools

• Manual J Heating Load (Simplified)
• Duct Sizing
• Sensible Heat Ratio
• CFM per Ton

Posture

Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.