Thermal Mass Calculator

Calculate thermal mass effects and temperature swing reduction in buildings.

Thickness of thermal mass material.
inches
Enter 1 for concrete, 2 for brick, 3 for adobe.
type
Total area of thermal mass surface.
ft²
Daily temperature variation.
°F

Results

Thermal Capacity-BTU/°F
Thermal Time Lag-hours
Indoor Temp Swing Reduction-%
References: ASHRAE Handbook - Fundamentals, Chapter 18 (Thermal Mass); DOE Building Technology