: This is the industry gold standard for commercial heat load estimation. Excel templates based on E20 calculate sensible and latent heat gains by factoring in building orientation, climate data, and material insulation properties.

Building Envelope DataThis section requires inputs for every surface that touches the outside air. You will enter the area (square footage) and the thermal properties of the materials. In 2021, there is a heavier emphasis on "continuous insulation" and airtightness, which significantly lowers the calculated heating load.

Should I help you the specific tabs or formulas for a 2021-standard load calculation sheet?

Here's a basic template you can use as a starting point:

Automated determination of the total required tonnage and CFM (Cubic Feet per Minute) needed for the space. Essential Formulas Often Integrated