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Roof Heat Gain Calculator
Calculate cooling load from roof heat gain using CLTD method.
Roof Area
?
Total roof area.
sq ft
Roof U-Value
?
Overall heat transfer coefficient.
BTU/hr·ft²·°F
CLTD (Corrected)
?
Corrected Cooling Load Temperature Difference (40-80°F typical).
°F
Latitude-Month Correction
?
Correction for latitude and month.
°F
Calculate
Results
Roof Heat Gain
-
BTU/hr
Roof Load
-
tons
References:
ASHRAE Handbook—Fundamentals Ch. 18; CLTD/CLF Method; ASHRAE GRP 158